Let g be the function given by g(x)=-3x^2-2x+3 evaluate g(-2)

Answer:

Since discriminant is positive, therefore, the given quadratic equation has two real solutions. Correct answer is the last option.

Step-by-step explanation:

We have been given a quadratic equation and we need to figure out the number of real solutions of the equation.

[tex]2x^{2}+7x-15=0[/tex]

We know that discriminant of a general quadratic equation [tex]ax^{2}+bx+c=0[/tex] is given by [tex]D=b^{2}-4ac[/tex]

For the given quadratic equation [tex]2x^{2}+7x-15=0[/tex], we have [tex]a=2,b=7,c=-15[/tex]. Upon substituting these values in the formula for discriminant, we get:

[tex]D=7^{2}-4(2)(-15)[/tex]

[tex]D=49+120[/tex]

[tex]D=169[/tex]

Since discriminant is a positive number, therefore, the given quadratic equation has two real solutions. Hence, the last option is the correct answer.

Answer:

two real solutions

Step-by-step explanation:

Area is a squared number.  We know that from the label we use when we solve problems involving area.  Perimeter is a single unit label.  This single unit label can also be used to find scale factor, since single unit labels are one-to-one.  If the area of polygon F is 36, that means that the single unit measure was a number that was squared to get to the area.  Same goes for polygon G.  That means that in order to find the single unit measure of each of those we have to take the square root of the area.  The square root of 36 is 6, and the square root of 4 is 2.  6:2 is the scale factor, but that can be reduced to 3:1, larger to smaller.

Answer:

1/3

Step-by-step explanation:

khan academy answer

If you mean standard form its

.000000059

Answer:

y = 0.15x+77 is the equation linear connecting total cost y and miles driven x

Step-by-step explanation:

Given that the leasing company charged a flat rental fee for the week, plus a charge for each mile driven.

Let flat rental fee be c and cost per mile driven = m and miles driven = x

Total cost =y

Then y = mx+C is the linear equation.

to find m and c, we use the fact that y =110.30 when x = 222

i.e. 110.30 = c+222x

and similarly 99.05 = c+147x

Subtract to eliminate c

11.25 = 75 x

0.15 =x

Substitute in I equation

110.30 = c+222(0.15)

c = 77

Hence y = 0.15x+77 is the equation linear connecting total cost y and miles driven x

Answer:

y = 0.15x+77

Step-by-step explanation:

i did it

x-intercept: (4,0)

y-intercept: (0,2)

the answer is b. to calculate 5% interest you multiply whatever by 0.05, this immediately eliminates any other answer

ANSWER TO QUESTION 1.

We plot the points:

[tex]P(8,0)[/tex]

[tex]Q(6,2)[/tex]

and

[tex]R(-2,-4)[/tex]

We plot the image triangle also with the points,

[tex]P'(4,0)[/tex]

[tex]Q'(3,1)[/tex]

and

[tex]R(-1,-2)[/tex]

See graph in attachment.

ANSWER TO QUESTION 2.

The scale factor is the ratio of the image length to the object length.

[tex]Scale\: factor=\frac{|P'Q'|}{|PQ|}[/tex].

We need to use the distance formula to determine the two lengths.

[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

[tex]|P'Q'|=\sqrt{(3-4)^2+(1-0)^2}[/tex]

[tex]|P'Q'|=\sqrt{(-1)^2+(1)^2}[/tex]

[tex]|P'Q'|=\sqrt{1+1}[/tex]

[tex]|P'Q'|=\sqrt{2}[/tex]

[tex]|PQ|=\sqrt{(6-8)^2+(2-0)^2}[/tex]

[tex]|PQ|=\sqrt{(-2)^2+(2)^2}[/tex]

[tex]|PQ|=\sqrt{4+4}[/tex]

[tex]|PQ|=\sqrt{8}[/tex]

[tex]|PQ|=2\sqrt{2}[/tex]

Therefore the scale factor of the dilation is

[tex]Scale\: factor=\frac{\sqrt{2}}{2\sqrt{2}}[/tex].

[tex]Scale\: factor=\frac{1}{2}[/tex].

ANSWER TO QUESTION 3

For a reflection in the y-axis we negate the x-coordinates. That means we are using the y-axis as our mirror line. The mapping is given as follows:

[tex]P'(4,0)\rightarrow P''(-4,0)[/tex]

[tex]Q'(3,1)\rightarrow Q''(-3,1)[/tex]

and

[tex]R(-1,-2)\rightarrow R''(1,-2)[/tex]

ANSWER TO QUESTION 4

We can see from the diagram that, PQR is bigger than P"Q"R".

The reason is that PQR was reduced by scale factor of half and then reflected in the y-axis to obtain P"Q"R".

Since dilation is not a rigid motion, the two triangles PQR and P''Q''R" are not equal in all respect, therefore they are not congruent.

Answer:

XY=8

Step-by-step explanation:

In △XYZ, XY=XZ

It is isosceles triangle whose equal sides are XY=XZ

We are given,  

XY=2a

YZ=3a+1

XZ=5a-12

XY=XZ

So, 2a=5a-12

Solve for a,  

2a-5a=-12

-3a=-12

a=4

Now we put a=4 into XY=2a  

So, XY=2(4)=8

Answer:

1.In △XYZ, XY=XZ.

We have to Find the length of XY of △XYZ if XY=2a, YZ=3a+1, and XZ=5a−12.

Now, X Y=X Z  [given]

→2 a= 5 a-12

Bringing like terms on same side

→2 a-5 a=-12

→-3 a=-12

→a=(-12)÷(-3)

a=4 is correct answer among all the options.

2.In △ABC, m∠A=(4x+7)° and m∠B=(5x−3)°.

What is m∠B?

Ans: as ∠ C not given we can't find ∠B.

co= same         planar = plane

coplanar means "same plane"

Answer: D

y = k / x² ( y varies inversely as the square of x )

y = 1/8 when x = 1:

1/8 = k / 1²

8 k = 1

k = 1/8

For x = 5:

y = 1/8  / 5² = 1/8 : 25 = 1/8 · 1/25 = 1/200

Answer: A ) 1/200

Hope This Helps!!!

Solution is given in image attached.

There is 1 serving of lemon juice to 3 cups water. Hence why it's 1:3 ratio.

Since it's 1:3, then 2 servings to 6 cups of water, so on and so forth.

Multiply your lemon juice servings by 3 to find out how many cups of water for the table.

To find how much lemon juice for 36 cups of water, just divide 36 by 3 to get 12. 12 servings of lemon juice is just right for your 36 cups of water.

Answer: There is 12 servings of lemon juice needed for 36 cups of water.

Step-by-step explanation:

Since we have given that

Number of cups of water to make lemonade = 36

Ratio of lemon juice to water = 1 : 3

So, number of lemon juice cups be x

number of cups of water be 3x.

According to question, it becomes,

[tex]3x=36\\\\x=\dfrac{36}{3}\\\\x=12[/tex]

Hence, there is 12 servings of lemon juice needed for 36 cups of water.

To find the constant 'a' in the function g(x) = 5x + a, you can substitute the known values into the function. Here, it leads us to the equation 5*4 + a = 31. Solving this equation gives 'a' = 11.

The question gives us the value of g(4) and asks us to find the constant 'a' in the function g(x) = 5x + a.

To solve for 'a', we can substitute the known values into the equation. We know that g(4) = 31, and the function g(x) is defined as 5x + a. Therefore, we replace 'x' with 4 in the function. This gives us 5*4 + a = 31.

Solving this equation, we find that 20 + a = 31. By subtracting 20 from both sides of the equation, we can solve for 'a', giving us 'a' = 31 - 20 = 11.

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Answer:

75,575 - ten-thousands place; this 7 is worth 70,000

75,575 - thousands place; this 5 is worth 5,000

75,575 - hundreds place; this 5 is worth 500

75,575 - tens place; this 7 is worth 70

75,575 - ones place; this 5 is worth 5

It is known that 60 minutes equals 1 hour.

Therefore, the first thing we do to solve the problem is to calculate how many hours are equivalent to 96 minutes.

For that we calculate:

[tex]96 minutes * \frac{1 hour}{60minutes}=\frac{96}{60}=1.6hours\\[/tex]

Thus:

96 minutes = 1.6 hours.

1.9 ounces of water are lost every 1.6 hours.

Therefore, in 8 hours the amount of water lost  is:

[tex]\frac{8hours}{1.6hours}*1.9 = 9.5\\[/tex] ounces of water

After 8 hours, 9.5 ounces of water are lost

Therefore, the amount of water left in the tank after 8 hours is:

[tex]80 000-9.5=79990.5[/tex] ounces

For this case, we have:

The generic definition of the distributive property is:

[tex]a (b + c) = ab + ac\\[/tex]

Therefore, the option that fits the definition is given by:

[tex]9 (t + 5) = 9t + 45[/tex]

where the property is verified.

Thus, the correct option is A.

Answer:

Option A

Answer: 747

Step-by-step explanation:

16x9+67x9

First multiply 16 and 9 which is equal to 144

144+67x9

now multiply 67 and 9 which is equal to 603

144+603

Now add 144 and 603 which is equal to 747

So the answer to 16x9+67x9 is 747

use PEMDAS

16 * 9 + 67 * 9 =

144 + 603 =

747

First, let's convert the radical terms to exponents. Remember the following:

[tex]\sqrt[n]{x^m} = x^\frac{m}{n}[/tex]

[tex]\sqrt{x^5} = x^{\frac{5}{2}}[/tex]

[tex]\sqrt[4]{x^9} = x^{\frac{9}{4}}[/tex]

[tex]\sqrt[6]{x^5} = x^{\frac{5}{6}}[/tex]

After substituting in the values we just found, our expression looks like:

[tex]\dfrac{(x^{\frac{5}{2}})(x^{\frac{9}{4}})}{x^{\frac{5}{6}}}[/tex]

Now, remember that we can add the exponents of terms that have the same base and are being multiplied by each other. Also, remember that we can subtract the exponents of terms with the same base that are being divided by each other. This is represented as:

[tex]x^a \cdot x^b = x^{(a + b)}[/tex]

[tex]\dfrac{x^c}{x^d} = x^{(c - d)}[/tex]

Thus, we can simplify our expression even more:

[tex]\dfrac{(x^{\frac{5}{2}})(x^{\frac{9}{4}})}{x^{\frac{5}{6}}}[/tex]

[tex]\dfrac{x^{\frac{19}{4}}}{x^{\frac{5}{6}}}[/tex]

[tex]x^{\frac{47}{12}}[/tex]

Our answer is [tex]\boxed{m = \dfrac{47}{12}}[/tex].

If I understand what you're saying. It would be the absolute value of -37, which is 37. Also, the absolute value of 37 is 37.

The absolue valor of 37 is 37

2w + 2l = 25

2 * 2 + 2l = 25

Simplfiy.

4 + 2l = 25

Subtract 4 from both sides.

2l = 21

Divide both sides by 2.

l = 10.5

Now that we have the value of l, we can find the area.

A = lw

A = 10.5 * 2

A = 21.

The length is 10.5cm.

The area of the rectangle is 21cm^2

1/2(4x-5) + 5/2 = 10

Use the distributive property:

2x - 5/2 + 5/2 = 10

Use addition property:

2x = 10

Divide both sides by 2:

x = 10/2

x = 5

The equation representing a linear function with a slope of 4 / 5 and a y-intercept of -6 is y = 4 / 5 x - 6.

The equation of a linear function can be written in the form:

y = 4 / 5 x + b

where "m" represents the slope of the line, and "b" represents the y-intercept (the value of y when x is 0).

Given that the slope is 4/5 and the y-intercept is -6, the equation would be:

y = 4 / 5 x - 6

So, the equation representing a linear function with a slope of 4.5 and a y-intercept of -6 is y = 4.5x - 6.

To know more about slope click here :

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Complete question is :

Which equation represents a linear function that has a slope of 4/5 and a y-intercept of –6?

Part a)

we know that

to find the equation of the line, I will use the two points that are closest to the line

Let

A(1,14)

B(7,7)

Part b)

Find the slope

we know that

the formula to find the slope between two points is equal to

[tex]m=(y2-y1)/(x2-x1)[/tex]

substitute

[tex]m=(7-14)/(7-1)[/tex]

[tex]m=(-7)/(6)[/tex]

[tex]m=-7/6=-1.167[/tex]

the answer part b) is

the slope is [tex]m=-7/6=-1.167[/tex]

Part c)

we know that

the equation of the line in point slope form is equal to

[tex]y-y1=m(x-x1)[/tex]

use the point B (7,7)

[tex]y-7=(-7/6)*(x-7)[/tex]

therefore

the answer part c) is

[tex]y-7=(-7/6)*(x-7)[/tex]

Part d)

we know that

the equation of the line in slope-intercept for is equal to

[tex]y=mx+b[/tex]

we have

[tex]y-7=(-7/6)*(x-7)[/tex]

[tex]y=(-7/6)x+(49/6)+7[/tex]

[tex]y=(-7/6)x+(91/6)[/tex]

therefore

the answer Part d) is

[tex]y=(-7/6)x+(91/6)[/tex] or [tex]y=-1.167x+15.167[/tex]

Answer:

67.23

Step-by-step explanation:

Please refer to the attachment photo for explanation

Final answer:

The vertical distance between the bird and the fish is 67 2/9 feet.

Explanation:

To calculate the vertical distance between the bird and the fish, we need to add the distance the bird is flying above the sea to the distance the fish is swimming below the sea.

The bird is flying at a height of 43 5/9 feet above the sea, which can be converted to an improper fraction for easier calculation:

43 5/9 = (43×9 + 5)/9 = 392/9 feet

The fish is swimming at 23 2/3 feet below the surface of the sea, which also can be converted to an improper fraction:

23 2/3 = (23×3 + 2)/3 = 71/3 feet

To find the total distance, we add these two fractions:

To add these fractions, we need a common denominator. The lowest common denominator for 9 and 3 is 9.

When we convert the improper fraction back to a mixed number, we get:

So, the vertical distance between the bird and the fish is 67 2/9 feet.

100 can go into 750  7.5 times :)

750 divided by 100 is 7.5 so 100 goes into 750 7.5 times

Question 1:

Shop A trainers normal price= £85

[tex]\frac{1}{3}[/tex] is off so it becomes [tex]\frac{1}{3}\times85=28.33[/tex]

So price becomes: [tex]85-28.33=56.67[/tex]

Shop B trainers normal price= £80

30% is off so it becomes: [tex]\frac{30}{100}\times80=24[/tex]

So price becomes: [tex]80-24=56[/tex]

So, Shop B has cheaper trainers.

Question 2:

In a sale all items are reduced by = 30%

On the final day the sale price are reduced by = 20%

On the day before the last day of the sale, the price of the sofa was [tex]0.7\times290=203[/tex]

As given, on the last day of the sale, the price was again reduced to 80% of the price the day before, so price becomes: [tex]0.8\times203=162.40[/tex]

Hence the price was £162.40

There were 375 adult tickets sold.

This question involves a concept in basic algebra. Let's denote the number of adult tickets as A and the number student tickets as S. From the problem, we know that the total number of tickets sold is 676, so A+S=676. The problem also tells us that there were 74 fewer student tickets sold than adult tickets, so we know that S=A-74.

We can substitute the value of S from the second equation into the first equation which gives us A+(A-74)=676. By solving this equation we find that A=375, so there were 375 adult tickets sold.

Let's denote the number of adult tickets sold as x. Since there were 74 fewer student tickets sold, the number of student tickets sold is x - 74. The total number of tickets sold is the sum of the adult and student tickets, which is 676.

Therefore, we can write the equation:

x + (x - 74) = 676

Simplifying the equation:

2x - 74 = 676

Adding 74 to both sides:

2x = 750

Dividing by 2:

x = 375

So, 375 adult tickets were sold.

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