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3 years ago

Can someone please answer this question please answer it correctly and please show work please help me please help

Mathematics

1 answer:

yKpoI14uk [10]3 years ago

3 0

Answer:

4. A.

14. A. 38.4 mph

(I estimated the line to be 1.5 inches. Measure the line IRL so I can adjust the answer)

15. D.

16. B.

17. A.

Step-by-step explanation:

4. Rearrange the numbers; 44, 45, 45, 47, 49, 50, 50, 51, 55, 55, 55, 56

Minimum = 44

First Quartile = 46

Median = 50

Third Quartile = 55

Maximum = 56

14. 12 × 8 = 96. 96 × 1.5 = 144

144/1 ÷ 15/4 = 144/1 × 4/15 = 576/15 = 38.4

15. 35(2) + [ -1/2(15) ] = 35(2) - 1/2(15)

16. The new numbers for 540 students are

8/60 = 72/540 Walked: 72

7/60 = 63/540 Car: 63

3/60 = 27/540 Bicycle: 3

42/60 = 378/540 Bus: 378

17. 280 × 9 = 2,520

Increase by 25% = 125% of the total

2,520 × 1.25 = 3,150

3,114 - 3,150 = -36

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3 years ago

jenny wants to buy a winter coat for $200. the store advertises that customers can take 25% off the original price and then take

777dan777 [17]

Hello!

Let's check:

200 * 25% = 50

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150 * 10% = 15

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3 years ago

Nine less than a number is 9. Find the number.

astraxan [27]

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3 years ago

Read 2 more answers

A right rectangular prism has a volume of 470.40 cm³. The length of the solid is 6.4 cm and the width is 9.8 cm. What is the hei

andrezito [222]

If a rectangular prism has a volume of 470.40 cm³, and the length and width is equal to 6.4 and 9.8, we will find the height by using some inverse operations. We will use the variable h to represent height

Length x Width x Height = Volume
6.4 cm • 9.8 cm `• h = 470.40

470.40 ÷ (9.8 x 6.4)
 = 470.40 ÷ 62.72
 = 7.5

Check Answer:
Length x Width x Height = Volume
6.4 cm • 9.8 cm `• 7.5 = 470.40

Answer: 7.5 cm

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3 years ago

Which statements about the function are true? Select two

iogann1982 [59]

Answer:

The vertex of the function is at (1,-25)

Step-by-step explanation:

I think your question missed key information, allow me to add in and hope it will fit the orginal one.

Part of the graph of the function f(x) = (x + 4)(x-6) is shown below.

Which statements about the function are true? Select two

options.

The vertex of the function is at (1,-25).

The vertex of the function is at (1,-24).

The graph is increasing only on the interval -4< x < 6.

The graph is positive only on one interval, where x <-4.

The graph is negative on the entire interval

My answer:

Given the factored form of the function:

f(x) = (x + 4)(x-6)

<=> f(x) = $x^{2} - 2x -24$

We will convert to vertex form

<=> f(x) = ( $x^{2} - 2x +1$ ) - 25

<=> f(x) = $(x-1)^{2} -25$

=> the vertex of the function is: (1,-25)

We choose: a. The vertex of the function is at (1,-25)

Let analyse other possible answers:

c. The graph is increasing only on the interval -4< x < 6.

Because the parameter a =1 so the graph open up all over its domain and the vertex is the lowest point.

So the graph is increasing in the domain (1, +∞)

=> C is wrong

d. The graph is positive only on one interval, where x <-4

Wrong, The graph is positive only on one interval, where x > 6

e. The graph is negative on the entire interval

Wrong, The graph is negative only on one interval, where -4< x < 6.

7 0

3 years ago