(a +3)/7 = 3
..........

Answer: -15

Step-by-step explanation:

The average rate of change for the interval from x = 7 to x = 8 is -15. The correct option is B.

A quadratic polynomial in mathematics is a polynomial of degree two in one or more variables. The polynomial function defined by a quadratic polynomial is known as a quadratic function.

Since the quadratic function has a vertex at (0,3), the equation for the function can be written in vertex form as:

y = a(x - 0)^2 + 3

Where "a" is a constant that determines the shape of the parabola. To find the value of "a", we can use one of the other points on the parabola. Let's use the point (1, 2):

2 = a(1 - 0)^2 + 3

Simplifying this equation, we get:

a = -1

So the equation for the quadratic function is:

y = -x^2 + 3

Now we can use this equation to find the average rate of change between x = 7 and x = 8. The value of the function at x = 7 is:

y = -7^2 + 3 = -46

The value of the function at x = 8 is:

y = -8^2 + 3 = -61

The average rate of change between x = 7 and x = 8 is:

(y2 - y1) / (x2 - x1) = (-61 - (-46)) / (8 - 7) = -15

Therefore, the average rate of change for the interval from x = 7 to x = 8 is -15.

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Answer:

The discount is $20 off or 50% off.

Step-by-step explanation:

It is easy math.

Answer:

2.89

Step-by-step explanation:

Answer:

2.89

Step-by-step explanation:

cuz other answer said this lol

Answer:

9.7

Step-by-step explanation:

First convert the numbers into whole numbers by multiplying both numbers by 100. Then divide the numbers by using long division.

Answer:

-3/10

Step-by-step explanation:

Answer:

Range is 8

Step-by-step explanation:

To find range you need to subtract the largest number with the smallest. The largest is 28 and the smallest is 20.

28-20=8

Answer:

2.9

Step-by-step explanation:

2 9/10 as an improper fraction is 29/10

29/10 as a decimal is 2.9

Answer:

2.9

Step-by-step explanation:

Math. Pls give brainliest:)!

Answer:

D

Step-by-step explanation:

He goes 66 MPH because 66 times 10= 660 MPH

Hopefully this helps!

Answer:

[tex] \boxed{x = 4.0497}[/tex]

Step-by-step explanation:

[tex] \boxed{question \: \underline{4}.} \\ 5 {x}^{2} - 7(9.5 + 3) = - 5.5 \\ 5 {x}^{2} - 66.5 - 21 = - 5.5 \\ 5 {x}^{2} = - 5.5 + 87.5 \\ 5 {x}^{2} = 82 \\ {x}^{2} = \frac{82}{5} \\ {x}^{2} = 16.4 \\ x = \sqrt{16.4} \\ \boxed{ x = 4.0496913463}[/tex]

♨Rage♨........if you still need my help with the rest....then post each question seperatly.♨

Answer:

A. (-3,0)

Step-by-step explanation: you have to set the equation y to zero and than calculate the x

--> (x + 2)(x2 + 4x+3) = 0

--> (x+2) = 0 and (x2 +4x + 3) =0

--> X = -2 and        D= (4² - 4*2*3) = 4

                                      X = (-4 + [tex]\sqrt{4}[/tex]) / 2 of  X = (-4 + [tex]\sqrt{4}[/tex]) / 2

                                       x= -1                         x=-3

Answer:

The answer is (-3,0)

Answer:

reproductive

Step-by-step explanation:

Given:

The point is T(-3,7).

To find:

The image T' after [tex]R_{y-axis}\circ R_{x-axis}[/tex].

Solution:

[tex]R_{y-axis}\circ R_{x-axis}[/tex], it means reflection across x-axis is followed by reflection across y-axis.

If a point is reflected across the x-axis, then

[tex](x,y)\to (x,-y)[/tex]

[tex]T(-3,7)\to T_1(-3,-7)[/tex]

Then point is reflected across the y-axis. So,

[tex](x,y)\to (-x,y)[/tex]

[tex]T_1(-3,-7)\to T'(3,-7)[/tex]

Therefore, the coordinates of point T' are (3,-7).

Answer:

Step-by-step explanation:

1 quart = 32 ounces

therefore  32 ounces is sold for $2.24  

Therefore, the cost of one ounce is given bybcost 1 ounce + 2.24/32= $0.07

The store also sells a 59 ounce bottle for $3.54

cost 1 ounce = 3.54/59=$0.06

which is the better buy ? on comparing the cost of both bottles , we find the unit cost of 59 oz bottle is lower for $3.54.

Answer:

C is correct

Step-by-step explanation:

-3(2b+9) + 5 (-5b+ 6)

-6b-27 -25b +30

-31b+3

Answer:

the answer is no

January 19 would fall on a Tuesday

Answer:

5 twenty's 1 five

Step-by-step explanation:

20 x 5 = 100

100 = 5 = 105

Answer:

25%

Step-by-step explanation:

15 times 6 is 90

90 is 25% of 360

Answer:3/12 1/4

Step-by-step explanation:hope it helps

Answer:

The base is 24 cm long.

Step-by-step explanation:

Equations

Let's call

b= base of the triangle

h=height of the triangle

The base is 9 cm longer than the height, thus:

b = h + 9

The area of the triangle is:

[tex]\displaystyle A=\frac{bh}{2}[/tex]

[tex]\displaystyle A=\frac{(h+9)h}{2}[/tex]

And its value is 180:

[tex]\displaystyle \frac{(h+9)h}{2}=180[/tex]

Multiplying by 2:

[tex](h+9)h=360[/tex]

Operating:

[tex]h^2+9h-360=0[/tex]

Factoring:

[tex](h-15)(h+24)=0[/tex]

The only valid positive solution is:

h = 15 cm

And b = h + 9 = 24

b = 24 cm

The base is 24 cm long.

Answer:

D, or [tex]\frac{-1}{16}[/tex]

Step-by-step explanation:

To add (or subtract) fractions, you need to have a common denominator.

You might notice that the 16 on the bottom is a multiple of 8.

8*2 as a matter of fact

If we multiply [tex]\frac{1}{8\\}[/tex] by 1, it doesn't do anything, it stays as 1/8

1 is the same thing as [tex]\frac{1}{1}[/tex] and is also the same as [tex]\frac{2}{2}[/tex]

If we multiply [tex]\frac{1}{8}[/tex] by [tex]\frac{2}{2}[/tex], we get a bigger fraction, which is [tex]\frac{2}{16}[/tex]

So, our problem can be re-written as [tex]\frac{2}{16}+(-\frac{3}{16} )[/tex]

To add (or subtract) fractions with common denominators, you keep the common denominator and add (or subtract) the numerator.

[tex]\frac{2}{16}+(-\frac{3}{16})=\frac{2-3}{16}=\frac{-1}{16}[/tex]

The last step is to see if our answer can be reduced.

A fraction can't be reduced if there is a prime number in either the numerator or the denominator.

There is a -1 in the numerator, which is prime, and therefore, the fraction can't be reduced.

Answer:

X ≥ 96 and x ≤  110

96 ≤  x ≤  110

Step-by-step explanation:

at least usually means greater than or equal to

at most usually means less than or equal to

Conjuction inquality are conjoined with and, so th inequality will be written like # ≤ x ≤ #

#=number

The speed Category 2 hurricane will be greater than equal to 96 and less than equal to 110( 110 ≤ S ≤ 96 ).

A difference between two values indicates whether one is smaller, larger, or basically not similar to the other.

A mathematical phrase in which the sides are not equal is referred to as being unequal. In essence, a comparison of any two values reveals whether one is less than, larger than, or equal to the value on the opposite side of the equation.

In other words, inequality is just the opposite of equality for example 2 =2 then it is equal but if I say 3 =6 then it is wrong the correct expression is 3 < 6.

Let's say the speed of a Category 2 hurricane is S

Given that,

Category 2 hurricane has wind speeds of at least 96 miles per hour

So,

S ≥ 96 miles.

And,

at the most 110 miles per hour

So,

S ≤ 110 miles.

Combinedly 96 miles ≤ S ≤ 110 miles.

Hence "The speed Category 2 hurricane will be greater than equal to 96 and less than equal to 110( 110 ≤ S ≤ 96 )".

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Answer:

1 - D

2 - D

3 - B

Answer:

D. Quadrant 4

D. 1,2

B. A and B

Step-by-step explanation:

brainlest pls

Answer:

404.8

Step-by-step explanation:

100%=460

12%=x

x=(12*460)/100

x=55.2

Answer=460-x

Answer:

44°

Step-by-step explanation:

In the first triangle, the third angle is 180-95-39=46.

It has a congruent angle in the second triangle.

So the second triangle is 180-90-46=44°

a=44°

Answer:

415.47

Step-by-step explanation:

37.392/0.09 which is 415.47( rounded)

Hope this helps hit the crown :D

Answer: 43!

Step-by-step explanation:

Answer:

Step-by-step explanation:

What is the value of this expression if h = 8,7 = -1, and k = -12? 13 20​

Answer:

a

Step-by-step explanation: