7. What is the value of x in the equation 2x + 4 =-42?
A. -19
... -7
B. -23
D. Not Here

Answers

Answer 1

Answer:

B. -23

Step-by-step explanation:

2x + 4 = -42         subtract 4 from both sides

2x + 4 - 4 = -42 - 4

2x = -46         divide both sides by 2

2x/2 = -46/2

x = -23

Answer 2

Steps To Solve:

2x + 4 = -42.

2x + 4 - 4 = -42 - 4

2x = -46

2x/2 = -46/2

x = -23 (Answer)

______

Best Regards,

Wolfyy :)


Related Questions

. The circumference of a circle is 55/7
. What is the diameter of the circle. ​

Answers

Answer: 55/7π

Step-by-step explanation:

circumference = 2πr

2πr = 55/7

r = 55/14π

d = 2r

d = 55/7π

Adam has 16.45 kg of flour, he uses 6.4 kg to make hot cross buns. The remaining flour is exactly enough to make 15 batches of scones. How much flour in kg will be in each batch of scones?​

Answers

Answer:

Each batch of scones needed 0.67 kg of flour

Step-by-step explanation:

16.45 - 6.4 = 10.05kg (remaining)

15 batches = 10.05kg

1 batch = 0.67kg

Jadon rode in the car 42 miles. This represents 70% of his entire trip. What is the total number of miles in jadons trip?

Answers

There are 60 miles in Jadon's trip.

Step-by-step explanation:

Distance covered by Jadon = 42 miles

This is 70% of his entire trip.

Let,

x be the total number of miles in Jadon's trip.

We know that,

70% of x = 42 miles

[tex]\frac{70}{100}*x=42\\0.7x=42[/tex]

Dividing both sides by 0.07;

[tex]\frac{0.7x}{0.7}=\frac{42}{0.7}\\x=60\ miles[/tex]

There are 60 miles in Jadon's trip.

Keywords: distance, percentage

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Solve each equation using the quadratic formula x = =
a. x2 + 3x + 2 = 0
c. 2x2 + 5x = 1
b. 4x2 + 8x - 24 = 0
d. x2 + 14x + 33 = 0​

Answers

Answer:

a: x=-2, x=-1

c:x=-2.68, x=0.186

b:x=-3.6, x=1.6

d:x=-11, x=-3

Solve this equation for x. Round your answer to the nearest hundredth. 1 = In(x + 4)

Answers

Answer:

-1.28

Step-by-step explanation:

1=ln(x+4)

ln(x+4)=1

e^ln(x+4)=e^1

x+4=e

x=e-4=-1.28

A coffee company surveyed 40 potential customers to see where they would
like the company's new organic coffee sold. Respondents were given the
following four locations and asked to choose as many as they liked: grocery
stores, drugstores, health food stores, and big box stores. The results are
summarized in the bar graph below, with the number of times each location
was chosen noted above the corresponding bar.
Where should we sell our organic coffee?
20
16
14
10
Grocery
Stores
Drugstores Health
Food Stores
Stores
What was the average number of locations chosen per potential customer?

Answers

Answer:

1.5

Step-by-step explanation:

Final answer:

The average number of locations chosen per potential customer in the coffee company's survey was 1.5.

Explanation:

To calculate the average number of locations chosen per potential customer, we need to know the total number of preferences selected by all 40 potential customers. The numbers given for each location are: 20 for grocery stores, 16 for drugstores, 14 for health food stores, and 10 for big box stores.

Adding these together gives a total of 60 preferences for the four locations (20+16+14+10). This total is then divided by the 40 potential customers to produce the average. Therefore, the average number of locations chosen per potential customer is 1.5 (60 ÷ 40 = 1.5).

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2. The registration at a preschool is $125. Then,
parents must also pay $475 per month for
tuition. Write an equation to represent the
total cost after each month. Identify your
variables. a) What is the rate of change?
b) What is the initial value?
c) What is the Independent variable?
d) What is the dependent variable?

Answers

The equation of the total cost is y = 475 x + 125, where y is the total cost for x months

a) The rate of change is $475 per month

b) The initial value is $125

c) The independent variable is the number of months (x)

d) The dependent variable is the total cost after each month (y)

Step-by-step explanation:

The given is:

The registration at a preschool is $125The parents must also pay $475 per month for  tuition

Assume that the total cost is y for x months

∵ The registration fee = $125 ⇒ paid once

∵  The parents pay $475 per month for  tuition

∵ The number of months is x

∴ The total cost y = 475 x + 125

The equation of the total cost is y = 475 x + 125, where y is the total cost for x months

∵ y = 475 x + 125 is in the form of the linear equation y = m x + b,

  m is the slope of the line and b is the y-intercept

∵ The slope of the line m is the rate of change y with respect to x

∴ m = 475

∴ The rate of change is $475 per month

a) The rate of change is $475 per month

∵ b is the initial value of y at x = 0

∴ b = 125

∴ The initial value is $125

b) The initial value is $125

∵ The independent variable is x

∴ The independent variable is the number of months (x)

c) The independent variable is the number of months (x)

∵ The dependent variable is y

∴ The dependent variable is the total cost after each month (y)

d) The dependent variable is the total cost after each month (y)

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Simplify (-36x)(-1/3)(2/9)(-4y)

Answers

Answer:

[tex]\frac{32xy}{3}[/tex]

Step-by-step explanation:

Subtract 11b2 - 4b +7 from b2 + 8b -9

Answers

Answer:

2(4b-1)

Step-by-step explanation:

I don't really understand :/
Remove all perfect squares from inside the square root.
√180

Answers

Answer:

6[tex]\sqrt{5}[/tex]

Step-by-step explanation:

We can factorize 180 to get 2^2*3^2*5.

We know that 2^2 and 3^2 are squares so we can remove them from under the radical.

So, the simplified square root would be 6[tex]\sqrt{5}[/tex]

Final answer:

To remove perfect squares inside a square root, we simplify the number using prime factorisation. In this case, √180 simplifies to 6√5.

Explanation:

The given value is √180. To simplify it or remove perfect squares, we have to find the prime factors of the number under the square root. We can write 180 as 2 * 2 * 3 * 3 * 5. In square root simplifications, we usually group the factors into pairs, because a pair of same factors gives one factor outside the square root. Here, 2 * 2 becomes 2 and 3 * 3 becomes 3. There is an extra 5 inside the square root that cannot come out because it doesn't have a pair. Hence, √180 simplifies to 6√5.

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A 2-column table has 5 rows. The first column is labeled x with entries negative 2, negative 1, 0, 1, 2. The second column is labeled f (x) with entries 12.5, 2.5, 0.5, 0.1, 0.02. Which exponential function is represented by the table?

Answers

Answer:

[tex]f(x)=0.5(0.2)^x[/tex]

Step-by-step explanation:

Exponential function can be in this form : [tex]f(x)=ab^x[/tex]

To find a and b we can use any two pairs from the table.

We can use (0, 0.5) and (1,0.1)

[tex]0.5=a*b^0\\a=0.5[/tex]

let's find b

[tex]0.1=0.5b^1\\b=0.2[/tex]

The exponential function represented by the table is [tex]\( f(x) = 3.125 \times (0.5)^x \)[/tex], where x can take values -2, -1, 0, 1, or 2, and f(x) corresponds to the values given in the table.

1. Examine the given table with two columns: x and f(x), where x takes values -2, -1, 0, 1, and 2, and f(x) takes corresponding values 12.5, 2.5, 0.5, 0.1, and 0.02.

2. Notice that as x increases by 1, f(x) decreases by a factor of 5 (12.5 / 2.5 = 5, 2.5 / 0.5 = 5, etc.), indicating an exponential decay pattern.

3. Write the general form of an exponential decay function:

 [tex]\[ f(x) = a \times b^x \][/tex]

  where a is the initial value and b is the decay factor.

4. Use the first row of the table (x = -2, f(x) = 12.5) to find the initial value, a:

  [tex]\[ 12.5 = a \times (0.5)^{-2} \] \[ 12.5 = a \times 4 \] \[ a = \frac{12.5}{4} = 3.125 \][/tex]

5. Substitute the initial value, a, into the exponential function:

  [tex]\[ f(x) = 3.125 \times (0.5)^x \][/tex]

Therefore, the exponential function represented by the table is [tex]\( f(x) = 3.125 \times (0.5)^x \)[/tex], where x can take values -2, -1, 0, 1, or 2, and f(x) corresponds to the values given in the table.



A survey on healthy choices was given to gym members at Work It Out. The results

showed that 90% of its members drank protein shakes. Of the members who drank

protein shakes, 30% took weight-loss medication whereas only 10% of members

who did not drink protein shakes took weight-loss medication. What is the

probability that a gym member does not take weight-loss medication?

1) 0.28

2) 0.66

3) 0.63

4) 0.72

Answers

Answer:

The correct option is 4) 0.72.

Step-by-step explanation:

Consider the provided information.

Let us consider that there are 100 members.

(Note: you can take any number the answer will remain the same.)

90% of its members drank protein shakes and of the members who drank  protein shakes.

90% of 100 is 90.

Thus, 90 members drank protein shake.

Of the members who drank   protein shakes, 30% took weight-loss medication.

30% of 90 is 27.

That means 27 out of 90 took weight loss medication.

Out of 100 members 90 drank protein shakes that means 10 members does not take protein shakes.

Only 10% of members  who did not drink protein shakes took weight-loss medication.

10% of 10 is 1, that means 1 member out of 10 took weight loss medication.

Thus the required table is:

                                        Medication   Not Medication      Total

Drank shakes                       27                   63                      90

Doesn't Drank shakes          1                      9                        10

Total                                      28                   72                     100

Now we need to find the probability that a gym member does not take weight-loss medication.

72 out of 100 members does not take weight-loss medication.

Therefore, the required probability is: [tex]\frac{72}{100}=0.72[/tex]

Hence, the correct option is 4) 0.72.

The percents of students who travel to school by car, bus, and bicycle are shown for a school of 825 students. 20% by car 48% by bus and 8% by bike. What would be the other method present of going to school?

Plz give clear answer

Answers

Answer:

24% could be going to school by walking

Step-by-step explanation:

Final answer:

By adding the given percentages of students traveling by car, bus, and bike, and subtracting from 100%, we find that 24% of students use other methods to travel to school.

Explanation:

To find the other method of traveling to school not mentioned among car, bus, and bicycle, we first need to add up the provided percentages for these modes of transportation: 20% (car) + 48% (bus) + 8% (bike) = 76%. Since all the percentages must add up to 100%, we subtract the sum of these percentages from 100% to determine the remaining percentage. Therefore, 100% - 76% = 24%. So, 24% of students travel to school by other methods that are not specified (walking, skateboarding, etc.).

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Calibrating a scale:

Making sure that the scales used by businesses in the United States are accurate is the responsibility of the National Institute for Standards and Technology (NIST) in Washington, D.C. Suppose that NIST technicians are testing a scale by using a weight known to weigh exactly 1000 grams. The standard deviation for scale reading is known to be o 2.8. They weigh this weight on the scale 50 times and read the result each time. The 50 scale readings have a sample mean of x = 1001.1 grams. The calibration point is set too high if the mean scale reading is more than 1000 grams. The technicians want to perform a hypothesis test to determine whether the calibration point is set too high.

Use a = 0.01 level of significance and the critical value method.


(a) State the appropriate null and alternate hypotheses.

H0:

H1:

This hypothesis test is a left, right, or two tailed?

Answers

Answer:

We conclude that the calibration point is set too high.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ =  1000 grams

Sample mean, [tex]\bar{x}[/tex] =  1001.1 grams

Sample size, n = 50

Alpha, α = 0.05

Population standard deviation, σ = 2.8 grams

First, we design the null and the alternate hypothesis

[tex]H_{0}: \mu = 1000\text{ grams}\\H_A: \mu > 1000\text{ grams}[/tex]

We use One-tailed(right) z test to perform this hypothesis.

Formula:

[tex]z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }[/tex]

Putting all the values, we have

[tex]z_{stat} = \displaystyle\frac{ 1001.1 - 1000}{\frac{2.8}{\sqrt{50}} } = 2.778[/tex]

Now, [tex]z_{critical} \text{ at 0.01 level of significance } = 2.326[/tex]

Since,  

[tex]z_{stat} > z_{critical}[/tex]

We reject the null hypothesis and accept the alternate hypothesis. We accept the alternate hypothesis. We conclude that the calibration point is set too high.

Final answer:

The null hypothesis is that the calibration point is set correctly and the alternate hypothesis is that the calibration point is set too high.

Explanation:

The appropriate null and alternate hypotheses for this hypothesis test are:

H0: The calibration point is set correctly (mean scale reading = 1000 grams)

H1: The calibration point is set too high (mean scale reading > 1000 grams)

This hypothesis test is a right-tailed test because the alternate hypothesis is testing for a value greater than the null hypothesis.

Ajay sells two cycles at 2500$ each. If he makes a profit of 25% on one and incurs a loss of 25% on the other, find his net profit or loss percent.

Answers

Answer:

The total loss percentage is 6.25%.

Step-by-step explanation:

Let the cost price of the first cycle is $x.

So, for the first cycle, 25% profit is there for selling the cycle at $2500.

Then, [tex]x(1 + \frac{25}{100}) = 2500[/tex]

⇒ 1.25x = 2500

x = $2000

Again, let us assume that the cost price of the second cycle is $y.

So, by selling the cycle at $2500 there is a loss of 25%.

Therefore, [tex]y(1 - \frac{25}{100} ) = 0.75y = 2500[/tex]

y = $3333.33

Therefore, the total cost price of two cycles = $(2000 + 3333.33) = $5333.33 and total selling price is $(2500 + 2500) = $5000.

Therefore, the total loss percentage is [tex]\frac{5333.33 - 5000}{5333.33} \times 100 = 6.25[/tex] % (Answer)

If two lines are parallel, which statement must be true?
) A. The two lines have zero slopes.
B. The two lines have undefined slopes.
C. The two lines have the same slope.
D. The two lines have opposite slopes.

Answers

Answer:

c

Step-by-step explanation:

8 copies of the same CD cost $120.What is the cost of one CD?

Answers

Answer:

$15

Step-by-step explanation:

120/8=15

Answer:

Step-by-step explanation:

Total Cost of 8 copies of same CD =$120

Because the copies of the CD is same, the cost of each one should be same

Cost of one CD should be $120/8=$15

what does 2+2 equal to

Answers

Answer:

Step-by-step explanation:

1

2+2=4 because you add it ok well bye :)

Lola charges $7 for 1/2 dozen cupcakes. What is the price per dozen?

Answers

Half dozen is a half of a dozen. So if she charges 7 dollars for half the whole will cost 14 dollars.

Answer: $14

Step-by-step explanation: To find out the price per dozen, we first need to understand that the word "dozen" means a grouping of 12. This means that 1/2 a dozen would be half of 12 which is 6.

If we double 6 to 12, we multiply by 2. We will also multiply by 2 for the price so we have 7 × 2 which simplifies to 14.

Therefore, Lola will charge $14 for her cupcakes.

I also provided an image to show the 1/2 dozen and dozen cupcakes.

The table shows the distance a runner covers during a race:

Time, x

(minutes)


Distance, y

(miles)
5 0.5
10 1
15 1.5
20 2
25 2.5
Which equation represents the relationship between x and y?

a. y = 0.5x
b. y = 10x
c. y = x + 10
d. y = 110x

win brainliest

Answers

Answer:

b. y=10x

Step-by-step explanation:

here, x represents time(minutes) : 0.5

                                                             1

                                                            1.5

                                                             2

                                                            2.5

y represents distance (miles): 5

                                                 10

                                                 15

                                                 20

                                                 25

to write any equation(linear) basically we need 2 points lying on it

let the 2 points be:  (1,10) and (2,20) [from the given information]

now, let (A,B) and (C,D) are two points on a line

then the equation of it can be given as :

[tex]y-B=(\frac{D-B}{C-A} )*(x-A)[/tex]

so, here the required equation will be,

[tex]y-10=(\frac{20-10}{2-1} )*(x-1)\\[/tex]

this is also equal to, [tex]y-10=10*(x-1)\\y-10=10x-10\\y     =10x-10+10\\y=10x[/tex]

therefore, option c represents the relationship between x and y.[trick: when you have options, you can directly substitute x and respective y values and check if the equation satisfies it. the equation which satisfies all the x and respective y values will be the correct equation.]

HELP!

Use the distributive property to match equivalent expressions.

Answers

Answer:

Step-by-step explanation:

1d

2a

3b

4c

Final answer:

The distributive property states that performing an operation on a sum or difference (either multiplication or division) is equivalent to performing that operation on each addend separately and then summing or subtracting the results. As an example, the statement 2*(3 + 4) can be rewritten as (2*3) + (2*4) to demonstrate the application of the distributive property.

Explanation:

The distributive property in mathematics states that the multiplication of a number by a sum is equivalent to the sum after each addend has been multiplied by that number individually. For example, if we had the expression 2*(3 + 4), using the distributive property, we could rewrite it as (2*3) + (2*4) which is 6 + 8, and both expressions equal to 14 (because 2*(3 + 4)=2*7=14).

So to match equivalent expressions using the distributive property, you would have to identify expressions that follow this rule. For example:

3*(x + 5) is equivalent to 3*x + 3*57*(y - 2) is equivalent to 7*y - 7*2

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What is the sum of the polynomials?(8x^2-9x^2-4x)+(x^2-3y^2-7x)

Answers

Answer:

-11x-3y^2

Step-by-step explanation:

(8x^2-9x^2-4x)+(x^2-3y^2-7x)

-x^2-4x+x^2-3y^2-7x

-4x-7x-3y^2

-11x-3y^2

Answer:

-3y² - 11x

Step-by-step explanation:

[tex](8x^2-9x^2-4x)+(x^2-3y^2-7x)\\\\=8x^2-9x^2-4x+x^2-3y^2-7x\qquad\text{combine like terms}\\\\=(8x^2-9x^2+x^2)-3y^2+(-4x-7x)\\\\=-3y^2-11x[/tex]

Solve for n: 5/6n+17=72

Answers

Answer:

n=66

Step-by-step explanation:

5/6n=72-17

5/6n=55

n=55/(5/6)

n=(55/1)(6/5)

n=(11*6)/1

n=66/1

n=66

Answer:

66

Step-by-step explanation:

The angle of elevation of a ladder is 19∘ and the ladder is 12 feet from the wall. What is the height of the ladder in feet?

Answers

Answer:

(24x)(19x2) 12/2 19

Step-by-step explanation:

(24x)(19x2) 12/2 19

Answer:

12.7 ft

Step-by-step explanation:

You're going to need to use acos

so

12 = acos (19) = 12.69

Then round up to 12.7

If the graph is reflected over the x-axis, what is the domain of
the function?

Answers

Final answer:

The domain of a function is the set of all possible input values for the function. Reflecting a graph over the x-axis does not change the domain of the function.

Explanation:

The domain of a function is the set of all possible input values for the function. When a graph is reflected over the x-axis, the y-values are negated. In this case, since the graph is a horizontal line, the y-values remain the same after reflection. Therefore, reflecting the graph over the x-axis does not change the domain of the function. The domain will still be the same set of real numbers that satisfy the given condition, which is 0 ≤ x ≤ 20.

When a function is reflected over the x-axis, the domain remains the same and the sign of each value in the range is negated.

When a function f(x) is reflected over the x-axis to form -f(x), it affects both the domain and the range. Let's break it down step by step:

Original Function: f(x)

Domain: The set of all possible input values for x in the function f(x).

Range: The set of all possible output values for f(x).

Reflected Function: -f(x)

Reflected Domain: The domain remains the same because reflecting over the x-axis does not change the x-coordinates. So, the reflected domain is the same as the original domain.

Reflected Range: The range is affected by the reflection. All the positive values in the original range become negative, and all the negative values become positive. If the original function had points (a, b), the reflected function will have points (a, -b). This essentially flips the original range values.

In summary:

Reflected Domain: Same as the original domain.

Reflected Range: The sign of each value in the original range is negated. For example, if the original function had a point (2, 3), the reflected function would have a point (2, -3).

The complete question is :

how does the reflection over the x-axis (-f(x)) affect the domain and range

Need help with this math problem

Answers

The value of b is: 4

Step-by-step explanation:

The given polygon is a convex polygon with three sides. A polygon with three sides is called triangle. The sum of interior angles of a triangle is 180°

So,

[tex]Sum\ of\ Angles = 180\\(b+41)+(101)+(b+30) = 180\\b+41+101+b+30 = 180\\2b+172 = 180\\2b = 180-172\\2b = 8[/tex]

Dividing both sides by 2

[tex]\frac{2b}{2} = \frac{8}{2}\\b = 4[/tex]

Hence,

The value of b is: 4

Keywords: Polygons, Triangles

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you jus drove your car 450 miles and used 50 gallons of gas. you know that the gas tank on your car holds 15 1/2 gallons of gas. what is the most number of miles you can drive on one tank of gas?​

Answers

Final answer:

To find the most number of miles you can drive on one tank of gas, divide the total miles driven by the total gallons used to calculate the miles per gallon (MPG). Then, multiply the MPG by the number of gallons in the gas tank to find the maximum number of miles that can be driven on one tank.

Explanation:

To find the most number of miles you can drive on one tank of gas, you can use the given information. You know that you just drove your car 450 miles and used 50 gallons of gas. Therefore, to find the miles per gallon (MPG), divide the total miles driven by the total gallons used. In this case, 450 miles divided by 50 gallons gives you an MPG of 9. This means that for every gallon of gas, your car can travel 9 miles.

Now, you know that the gas tank on your car holds 15 1/2 (or 15.5) gallons of gas. To find the maximum number of miles you can drive on one tank of gas, multiply the MPG by the number of gallons in the tank. So, 9 MPG multiplied by 15.5 gallons equals 139.5 miles. Therefore, the most number of miles you can drive on one tank of gas is 139.5 miles.

The most number of miles you can drive on one tank of gas is 139.5 miles.

To determine the most number of miles you can drive on one tank of gas, follow these steps:

Calculate the car's average miles per gallon (mpg):

You drove 450 miles using 50 gallons of gas.

The average mpg is calculated by dividing the total miles driven by the total gallons of gas used: [tex]\frac{450 \text{ miles}}{50 \text{ gallons}} = 9 \text{ mpg}.[/tex]

Determine the capacity of one full tank of gas in your car:

The gas tank holds 15 1/2 gallons of gas. Convert 15 1/2 to a decimal: [tex]15 \frac{1}{2} = 15.5 \text{ gallons}.[/tex]

Calculate the most number of miles you can drive on one full tank of gas:

Multiply the car's average mpg by the gas tank's capacity: [tex]9 \text{ mpg} \times 15.5 \text{ gallons} = 139.5 \text{ miles}.[/tex]

Please help me answer this.

Answers

Answer:

See explanation

Step-by-step explanation:

        Statements                         Reasons

1. [tex]\overline{AD}\parallel \overline{BC}[/tex]                                        Given

2. [tex]\angle ADB\cong \angle CBD[/tex]      As alternate interior angles when parallel lines AD and BC intersect by ltransversal BD

3. [tex]\overline{AD}\cong \overline{BC}[/tex]                                     Given

4. [tex]\overline{BD}\cong \overline{DB}[/tex]                     Reflexive property

5. [tex]\triangle ADB\cong \triangle CBD[/tex]                  SAS postulate

6.  [tex]\angle ABD\cong \angle CDB[/tex]              Corresponding parts of congruent triangles are congruent

7. [tex]\overline{AB}\parallel \overline{CD}[/tex]            Inverse alternate interior angles theorem

If y=3x^2 - 2x +5


What is the average slope for this function between the points at:


i. x= -3 and x= -1


ii. x=-3 and x=0


iii. x= 1-h and x= 1+h


USE DIFFERENCE QUOTIENT FORMULA.

Answers

Answer:

Part i) -14

Part ii) 11

Part iii) 4

Step-by-step explanation:

we know that

The average rate of change or slope using the difference quotient formula is equal to

[tex]\frac{f(b)-f(a)}{b-a}[/tex]

Part i) x= -3 and x= -1

In this problem we have

[tex]a=--3[/tex]

[tex]b=-1[/tex]

[tex]f(a)=f(-3)=3(-3)^{2} -2(-3)+5=38[/tex]  

[tex]f(b)=f(-1)=3(-1)^{2} -2(-1)+5=10[/tex]

Substitute

[tex]\frac{10-38}{-1+3}[/tex]

[tex]\frac{-28}{2}[/tex]

[tex]-14[/tex]

Part ii) x= -3 and x= 0

In this problem we have

[tex]a=--3[/tex]

[tex]b=0[/tex]

[tex]f(a)=f(-3)=3(-3)^{2} -2(-3)+5=38[/tex]  

[tex]f(b)=f(0)=3(0)^{2} -2(0)+5=5[/tex]

Substitute

[tex]\frac{5-38}{0+3}[/tex]

[tex]\frac{-33}{3}[/tex]

[tex]-11[/tex]

Part iii) x= (1-h) and x=(1+h)

In this problem we have

[tex]a=-(1-h)[/tex]

[tex]b=(1+h)[/tex]

[tex]f(a)=f(1-h)=3(1-h)^{2} -2(1-h)+5=3(1-2h+h^2)-2+2h+5=3-6h+3h^2+2h+3=3h^2-4h+6[/tex]  

[tex]f(b)=f(1+h)=3(1+h)^{2} -2(1+h)+5=3(1+2h+h^2)-2-2h+5=3+6h+3h^2-2h+3=3h^2+4h+6[/tex]  

Substitute

[tex]\frac{(3h^2+4h+6)-(3h^2-4h+6)}{1+h-(1-h)}[/tex]

[tex]\frac{8h}{2h}[/tex]

[tex]4[/tex]

8 - (4/5)x - 14 - 2x

Answers

For this case we must simplify the following expression:

[tex]8- \frac {4} {5} x-14-2x =[/tex]

We add similar terms:

[tex]8-14- \frac {4} {5} x-2x =[/tex]

We take into account that:

Equal signs are added and the same sign is placed.

Different signs are subtracted and the major sign is placed.

[tex]-6+ (\frac {-4-10} {5} x) =\\-6+ (\frac {-14} {5} x) =\\-6- \frac {14} {5} x[/tex]

Finally, the simplified expression is:

[tex]-6- \frac {14} {5} x[/tex]

ANswer:

[tex]-6- \frac {14} {5} x[/tex]

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