Solve this inequality

Answer:

8.4

Step-by-step explanation:

the equation 4x+8y -40 can be written as 4x-8y-40=0, this represents a line in a space of two dimensions.

solving for x when y=0.8 we have the equation below>

[tex]4x+8*0,8-40=0[/tex]

Which gives that x=42/5, or in more simpler terms, 8.4

Using the Pythagorean theorem:

a = √(c^2 - b^2)

a = √(8^2 - 5^2)

a = √(64 - 25)

a = √39 ( Exact answer )

Or √39 =  6.244997 as a decimal and you round the decimal answer as needed.

Answer:

.01 lbs

Step-by-step explanation:

If the weight of 1000 things are 1 pound that means 1 thing has a weight of 1/1000 lbs. So ten things have a weight of 10/1000 lbs or 1/100 lbs or .01 lbs.

Answer:

12 Containers

Step-by-step explanation:

given it takes 1/2 a pound to make one container, we can deduce:

1 pound makes 2 containers

2 pounds makes 4 containers

thus the amount of containers is equal to 2x (x being pounds of apples picked)

so

2(6)=12

Elise can make 12 containers of applesauce. Here's how to calculate it:
Step 1: Determine the total amount of apples Elise has:
Elise has picked 6 pounds of apples.
Step 2: Identify how many pounds of apples are needed for one container of applesauce:
According to the information provided, 1/2 pound of apples is needed to make 1 container of applesauce.
Step 3: Calculate how many containers Elise can make:
To find out how many containers of applesauce Elise can make, divide the total pounds of apples by the pounds of apples per container.
The calculation is as follows:
6 pounds of apples ÷ (1/2) pound per container = 12 containers
Therefore, with 6 pounds of apples, Elise can make 12 containers of applesauce.

Answer:

4(x - 5)^2 - 18.

Step-by-step explanation:

For a move 5 to the right f(x) ----> f(x - 5).

For a move of 2 down  f(x - 5) ----> f(x - 5) - 2.

For this case we have that by definition of function transformation is fulfilled:

Let h> 0:

To graph [tex]y = f (x-h)[/tex], the graph moves h units to the right.

To graph[tex]y = f (x + h),[/tex] the graph moves h units to the left.

Let k> 0:

To graph [tex]y = f (x) + k[/tex], the graph k units is moved up.

To graph [tex]y = f (x) -k[/tex], the graph moves k units down.

So, we have the following function:

[tex]h (x) = 4x ^ 2-16[/tex]

5 units on the right:

[tex]h (x) = 4 (x-5) ^ 2-16[/tex]

2 units down

[tex]h (x) = 4 (x-5) ^ 2-16-2\\h (x) = 4 (x-5) ^ 2-18[/tex]

Answer:

[tex]h (x) = 4 (x-5) ^ 2-18[/tex]

Answer:

12

Step-by-step explanation:

First put the set in order from least to greatest:

4, 5, 6, 9, 10, 11, 12, 15, 16

To find the range you subtract the largest number by the smallest number.

4, 5, 6, 9, 10, 11, 12, 15, 16

So 16 - 4 = 12

So the range is 12.

Answer:

12

Step-by-step explanation:

The greatest value in the data is 16.

The lowest value in the data is 4.

The range is the difference between the highest and the lowest values.

range = 16 - 4 = 12

Without a specific equation or context, we can't find a specific value for x. If the equation were a+c=x, with a=13 and c=47, then x would equal 60.

This question appears to be missing some information to find a specific value for x. If this were an algebraic equation such as a+c=x where a and c are declared as 13 and 47 respectively, you would simply add these two numbers together. So if a=13 and c=47, then x (your answer in this case) would be 60. However, without a given equation or context, it's impossible to determine the exact value for x.

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Answer:

c) 5,160

Step-by-step explanation:

If from a jar of pennies, 1290 are drawn, marked, and returned to the jar and after mixing,  a sample of 200 pennies is drawn and it was noticed that 50 were marked. Based on the given information there are  5,160 pennies in the jar.

1290 pennies are drawn and returned to the jar.

200 pennies were drawn.

50 pennies were marked.

1,490 is not enough.

258,000 is way too much.

5,160 makes sense.

Final answer:

Using the proportion of marked to sampled pennies, the total number of pennies in the jar is estimated to be 5160.

Explanation:

The task is to use the information given about the marked and sampled pennies to estimate the total number of pennies in the jar.

This is a classic example of using proportions in mathematics. If out of 200 sampled pennies, 50 are marked, this represents 25% of the sample.

Since 1290 pennies were marked to begin with, we assume that the sampled 25% represents a similar proportion of the total jar.

Thus, the equation to solve is 1290 / total number of pennies = 50 / 200. Simplifying the right side of the equation gives 1290 / total number of pennies = 1 / 4.

By cross-multiplication, the total number of pennies is 4 × 1290, which equals 5160.

Answer:

I only used two steps: 3) then 6) then 1).

Step-by-step explanation:

Ok, if x-5 is a factor of p(x), then p(5)=0 by factor theorem.

This also goes the other way around:

If p(5)=0 then x-5 is a factor of p(x) by factor theorem.

Let's check. I'm going to evaluate p(x) for x=5.

[tex]p(5)=5^3-5(5)^2-5+5[/tex]

[tex]p(5)=125-5(25)-5+5[/tex]

[tex]p(5)=125-125-5+5[/tex]

[tex]p(5)=0+0[/tex]

[tex]p(5)=0[/tex]

This implies x-5 is a factor since we have p(5)=0.

The first step I did was 3) evaluate p(x) for x=5.

The second step I did 6) simplify and find the remainder. I did this when I was evaluating p(5); that was a lot of simplification and then I found the remainder to be 0 after that simplification. The last step was 1) apply the factor theorem, the remainder is 0 so x-5 is a factor of p(x).

To determine if x-5 is a factor of the polynomial, evaluate p(x) when x=5. If the result is 0, then the Factor Theorem implies that x-5 is a factor. If not, x-5 is not a factor.

To determine if x-5 is a factor of p(x)=x^3-5x^2-x+5, you can follow these steps:

When you evaluate p(x) for x=5, if you get 0, it demonstrates, according to the factor theorem, that x-5 is a factor of p(x) because it results in the polynomial function equaling zero. If you don't get zero, then it's not a factor.

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We are given the following information:

each person uses 3/8 a box

there are 6 boxes

Because each box is [tex]\frac{8}{8}[/tex], and there are 6 boxes, we know that 1 person is [tex]\frac{3}{8*6}[/tex], or [tex]\frac{3}{48}[/tex].

In order to find how many people can use the 6 boxes, we can divide it by 3 (for each use):

48 / 3 = 16

Therefore, 16 people can share the worms.

Hope this helps! :)

Here,

(s-3)²=0

→s-3=0

→s=3

Substituting s=3 in,

(s+3)(s+5)

=(3+3)(3+5)

=(6)(8)

=48

The solution to the equation (s-3)²=0 is s=3. Subsequently, the value of (s+3)(s+5) can be calculated by substituting s with 3, giving us the answer 48.

To solve the given equation, (s-3)²=0, we need to find the value of s. This equation means that the value inside the parenthesis, s - 3, when squared equals zero. The only way for a real number squared to equal zero is for that number itself to be zero. Therefore, s - 3 must equal zero. Solving for s, we find that:

s - 3 = 0
s = 3

Now that we know s is 3, we can find the value of (s + 3)(s + 5) by substituting the value of s:

(3 + 3)(3 + 5) = 6 x 8 = 48

Therefore, the value of (s + 3)(s + 5) when (s - 3)² = 0 is 48.

Answer:

-7/2 ±1/2sqrt(13) = x

Step-by-step explanation:

f(x) =x^2 + 7x + 9

To find the zeros, set this equal to zero

0 = x^2 + 7x + 9

I will complete the square

Subtract 9 from each side

0-9 = x^2 + 7x + 9-9

-9 =x^2 + 7x

Take the coefficient of the x term, 7

divide by 2, 7/2

Then square it, (7/2)^2 = 49/4

Add this to both sides

-9 +49/4=x^2 + 7x + 49/4

-36/4 +49/4 = (x+7/2)^2

13/4 =  (x+7/2)^2

Take the square root of each side

±sqrt(13/4) = sqrt( (x+7/2)^2)

± sqrt(13) /sqrt(4)= (x+7/2)

± 1/2 sqrt(13) = (x+7/2)

Subtract 7/2 from each side

-7/2 ±1/2sqrt(13) = x+7/2-7/2

-7/2 ±1/2sqrt(13) = x

The function f(x) = x^2 + 7x + 9 has no real-number zeros as the discriminant is negative, indicating that the quadratic formula solution involves an imaginary number.

The student is asking to find the zeros of the quadratic function f(x) = x^2 + 7x + 9. To solve for the zeros, we need to find the values of x that make the function equal to zero. We can use the quadratic formula, which is [tex]x = \frac{{-b \pm \sqrt{{b^2 - 4ac}}}}{{2a}}[/tex], where a, b, and c are the coefficients of the quadratic equation ax^2 + bx + c = 0.

In this case, our equation is already in the correct form with a = 1, b = 7, and c = 9. Plugging these into the quadratic formula, we get:

[tex]x = \frac{{-7 \pm \sqrt{{7^2 - 4(1)(9)}}}}{{2 \cdot 1}}[/tex]

Upon further calculation, we find that the equation has no real-number solutions as the discriminant (b^2 - 4ac) is negative (49 - 36 = 13), leading to an imaginary number in the square root. Therefore, we conclude that the function does not cross the x-axis and has no zeros on the real number line.

Answer:

-4<x<-1

Step-by-step explanation:

To solve the problem, we divide the whole expression by 2:

2x^2 + 10x < –8 → x^2 + 5x < –4

→  x^2 + 5x + 4 < 0

Factorizing

→ (x+4)(x+1) < 0

The expression is ONLY negative when:

x>-4 and x<-1

Therefore, the solution is:

-4<x<-1

The inequality 2x2 + 10x < -8 should be rearranged to 2x2 + 10x + 8 < 0. It can't be factored so we must use the quadratic formula to solve it. The solution involves finding the values of x that make the function positive or negative.

To solve the inequality 2x2 + 10x < -8, we first need to arrange the terms. To do so, we can subtract 8 from each side of the inequality obtaining 2x2 + 10x + 8 < 0.

However, this is a quadratic inequality that is best solved by factoring, if possible. Let's try to factor our quadratic expression, but keep in mind that not all quadratic expressions can be factored. In this case, it is not factorable. Therefore, it must be solved by using the quadratic formula, which is x = [-b ± sqrt(b2-4ac)]/2a.

Take note the a, b, and c values from our inequality (a=2, b=10, c=8), and substitute these values into the quadratic formula. However, this approach will solve for 'x' in an equation, not an inequality.

To solve for 'x' in the inequality, we have to find the values of 'x' that make the function positive or negative, depending on the type of the inequality. We determine those values by solving the equation f(x) = 0, where f(x) is the left side of our inequality.

It is a complex process that requires understanding of both quadratic functions and inequalities. Following these steps and calculating correctly should lead you to the solution.

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[tex]\dfrac{7}{8}=\dfrac{875}{1000}=0.875[/tex]

Answer:

[tex]\large\boxed{\dfrac{7}{8}=0.875}[/tex]

Step-by-step explanation:

[tex]\bold{METHOD\ 1:}\\\\\dfrac{7}{8}=\dfrac{7\cdot125}{8\cdot125}=\dfrac{875}{1,000}=0.875\\\\\bold{METHOD\ 2:}\\\\\dfrac{7}{8}=7:8\qquad\text{divide 7 by 8 (look at the picture)}\\\\7:8=0.875[/tex]

Answer:

Option A) Bethany is correct because consecutive odd integers will each have a difference of two

Step-by-step explanation:

The sum of 3 consecutive odd integers is 91. Let the first odd integer is x. The next odd integer will be obtained by adding 2 in x i.e. (x + 2). The third odd integer will be obtained by adding 2 in the second odd integer i.e. (x + 2) + 2 = x + 4

So, the 3 odd integers will be:

x  , (x+2) and (x+4)

Their sum is given to be 91. So we can write:

x + (x+2) + (x+4) = 91

Hence, we can conclude that: Bethany is correct because consecutive odd integers will each have a difference of two.

Other options are not correct because consecutive odd integers always increase by 2. For example, the next odd integer after 1 is 3, which is obtained by adding two, similarly the next odd will be 5 and so on.

Answer:

a

Step-by-step explanation:

Answer:

g(x)=5x+7

Step-by-step explanation:

f(x)+g(x)=9x+4

We are given f(x)=4x-3.

So we insert 4x-3 for f:

4x-3+g(x)=9x+4

Subtract 4x on both sides:

  -3+g(x)=5x+4

Add 3 on both sides:

       g(x)=5x+7

Check:

  f(x)+g(x)

=(4x-3)+(5x+7)

=(4x+5x)+(-3+7)

=(9x)     +(4)

=9x+4

Bingo. We did it! :)

The function g(x) can be found by rearranging the equation f(X) + g(X) = 9x + 4 and substituting f(x) = 4x - 3 into it. This leads to g(x) = 5x + 7.

The given combined function is f(X) + g(X) = 9x + 4 and we know that f(x) = 4x - 3. To find g(x), we need to rearrange the combined function to make g(x) the subject. So step 1: subtract f(x) from both sides of the equation, giving: g(x) = 9x + 4 - f(x).

Then, we substitute f(x) into the equation, resulting in: g(x) = 9x + 4 - (4x - 3). Simplifying this gives us g(x) = 9x + 4 - 4x + 3, which further simplifies to g(x) = 5x + 7. This is the function g(x).

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Answer:

1350

Step-by-step explanation:

If a culture started with 1000 bacteria and after 6 hours it few to 1300 bacteria, there would be 1350 present after 10 hours.

1000 to 1100 is an increase of 100 bacteria per 6 hours.

1100+250= 1350

Answer:

1500

Step-by-step explanation:if it grows 300 in 6 hours you can assume that  each hour would increase the pop by 50 so 10 hours times 50 it will become 1500.

Answer:

The measure of the arc x is 130°

Step-by-step explanation:

we know that

The semi-inscribed angle is half that of the arc it comprises

so

65°=(1/2)[arc x]

solve for x

arc x=(2)(65°)=130°

Answer:

(-0.75, 0.5)

or in fractions:

(-3/4, 1/2)

Step-by-step explanation:

Answer:

3x^2 - 8x + 4.

Step-by-step explanation:

Dividing each term by 9x we get:

3x^2 - 8x + 4.

As per cubic equation, the result is [tex](3x^{2}-8x+4)[/tex].

A cubic equation is an equation where the highest power of the variable is 3.

The given linear equation is:

[tex]\frac{27x^{3}- 72x^{2}+ 36x}{9x} \\= \frac{27x^{3}}{9x} -\frac{72x^{2}}{9x}+\frac{36x}{9x}\\ = 3x^{2}-8x+4[/tex]

The result is [tex](3x^{2}-8x+4)[/tex].

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Answer:

Step-by-step explanation:

[tex]f(x)=ln(x)\\f(3)=ln(3) = 1.099[/tex]

Answer:

153 units squared

Step-by-step explanation:

To solve, multiply your length by your width.

[tex]A=lw\\A=9(17)\\A=153[/tex]

Answer:

A=153

Step-by-step explanation:

The area of a rectangle with a length of 9 and a width of 17 is 153.

Formula: A=wl

A=wl=17·9=153

The equation of the volume of the sphere is 4/3 × 27π

The volume of a cylinder is expressed as

V = πr²h

Since the cylinder has thesame height and radius, therefore, the volume of the cylinder will now be

V = πr² × r

V = πr³

The volume of a sphere is expressed as

V = 4/3(πr³)

Therefore we can say

the volume of sphere = 4/3 × volume of the cylinder

Volume of cylinder = 27π

volume of sphere = 4/3 × 27π

= 4 × 9

= 36πft³

Answer:

The answer is 52

Step-by-step explanation:

We need figure out the dilated by doing OB’/OB. 5+15= OB’. OB’ = 20. We already know that OB is 5. We used the substitution property. 20/5 = 4. Now, we got 4 as dilation. 13 cm x 4 = 52 cm. Therefore, our answer is 52

Perimeter of ΔA'B'C' is 52 cm.

The perimeter of ΔABC is =13 cm

Length of OB = 5 cm

Length of OB' = 15 + 5 = 20 cm

The Dilation factor can be found out b

ΔOCB and ΔOC'B' are similar as BC|| B'C'

From triangles ΔOCB & ΔOC'B' the dilation factor can be found out

by the formula below

[tex]\frac{BC}{B'C'} = \frac{5}{20}[/tex]

B'C'= 4[tex]\times[/tex]BC

so the dilation factor = 4

hence the new perimeter of the triangle = 13 [tex]\times[/tex] 4 = 52 cm

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To minimize the cost of the diet while meeting the vitamin requirements, we can use a system of linear equations to solve a linear programming problem. The optimal solution will provide the pounds of each type of food to be purchased.

To solve this problem, we can use a system of linear equations. Let's assume that we buy x pounds of type X food and y pounds of type Y food. The requirements for Vitamin A and Vitamin B can be expressed as the following inequalities: 10x + 30y ≥ 140 (for Vitamin A) and 20x + 15y ≥ 145 (for Vitamin B). We also need to minimize the cost, which can be expressed as the objective function: Cost = 12x + 8y. So, we have a linear programming problem.

To find the minimum cost, we can graph the feasible region defined by the inequalities and find the corner point with the lowest cost. Alternatively, we can use a method like the Simplex algorithm to solve the system of equations and find the optimal solution. The solution will give us the values of x and y that satisfy the requirements and minimize the cost.

Once we find the optimal solution, we can round the values of x and y to the nearest hundredths and provide the student with the pounds of each type of food to be purchased.

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According to the question the values of a and b are 17 and 6 respectively

A kite is a quadrilateral that has 2 pairs of equal-length sides and these sides are adjacent to each other.

According to the Definition:

Sides FJ = HJ ( from the diagram)

Hence (3b + 6) = 24cm

            3b = 24 - 6

            3b = 18

             b = 6

Sides FG = GH (from the diagram)

         (2a - 4) = 30

          2a = 30 + 4

           a = 34/2

           a = 17

Hence the value of a and b are 17 and 6 respectively.

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Answer: C

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Factor the numerator, that is

x² + 6x + 8 = (x + 4)(x + 2), now

f(x) = [tex]\frac{(x+4)(x+2)}{x+4}[/tex]

Cancel the factor (x + 4) on the numerator/ denominator, leaving

f(x) = x + 2 ← simplified version

Cancelling the factor x + 4 leaves a discontinuity ( a hole ) at

x + 4 = 0 ⇒ x = - 4 and f(- 4) = x + 2 = - 4 + 2 = - 2

There is a discontinuity at (- 4, - 2 )

To find the zero let f(x) = 0, that is

x + 2 = 0 ⇒ x = - 2

The zero is (- 2, 0 )

Answer:

X=5

Step-by-step explanation:

i hope this helps

Answer:

equation has no solutions

Step-by-step explanation:

3|–3x + 9| = –18   (divide both sides by 3)

|–3x + 9| = –6

because by definition, for any value a, |a| must be non-negative

hence |–3x + 9| must give a value that is greater or equal zero

because the right side of the equation is a negative integer, hence the equation has no solutions.

Answer:

The correct ans would be B, 25%+10%+10%+10%+10%

Step-by-step explanation:

When percentages are found, the best way to calculate them is to break them down to the simplest percentage form, and 10% is the simplest percentage that a person can calculate of whatever digit. So if someone wishes to find out the friendly percents, then the easiest would be to calculate the 10% of the figure, add them four times, then add them 2 times plus the half of 10%, which will become 25%, and then add them all to get the 65% of that figure.

Answer:

B.

Step-by-step explanation:

i took the test

Answer:

The correct option is (a+b)+c

Step-by-step explanation:

The correct option is (a+b)+c

According to the Associative property for Addition:

a+(b+c)=(a+b)+c

The associative property states that you can add or multiply regardless of how the numbers are grouped.

.If you are adding or multiplying it does not matter where you put parenthesis.

Thus the correct option is A....

[tex]\huge{\boxed{(a+b)+c}}[/tex]

For example, [tex]2+(3+4)=2+7=9[/tex].

If we group the terms differently, it doesn't matter. [tex](2+3)+4=5+4=9[/tex]

This is called the associative property of addition. As long as you still have all of the terms, and there are no other operations (subtraction, multiplication, etc.), the final answer will remain the same no matter how the terms are grouped.