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3 years ago

B = 22, mZZ = 30°; Find a.

Mathematics

1 answer:

mamaluj [8]3 years ago

6 0

Answer:

There is no a to find in your problem

Step-by-step explanation:

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The graph shows the relationship between the number of hours that Michelle has been driving and the distance that she has left t

nikitadnepr [17]

Answer:

(b) For each hour that Michelle drove, she traveled an additional 50 miles.

Step-by-step explanation:

Given

$(x_1,y_1) = (0,350)$ ---- start

$(x_2,y_2) = (7,0)$ --- end

Required

Which is true

(a): Journey = 6 hours

This is false, because:

$x = x_2 - x_1$

$x = 7-0$

$x = 7$ ---- 7 hours

(b): The average rate is 50 miles per hour

To do this, we calculate the slope (m) using:

$m = \frac{y_2 -y_1}{x_2- x_1}$

$m = \frac{0 - 350}{7-0}$

$m = -\frac{350}{7}$

$m = -50$

This means that the rate is 50 miles driven in 1 hour.

(b) is correct

Others are incorrect

7 0

3 years ago

If a person bikes 5 miles in 1.5 hours, how far can he bike in 13.5 hours

faltersainse [42]

Using proportions is the easiest way to solve these type of questions. Proceed as such:

 5 miles = 'x' miles 
 1.5 hours 13.5 hours

 'x' miles = (5 miles / 1.5 hours) * (13.5 hours)

 'x' miles = 45 miles

3 0

3 years ago

The function below crosses the x-axis once. y=3x^2-8x+8

Mekhanik [1.2K]

I believe it is false because it only passes through the y-axis not the x-axis.

6 0

3 years ago

How many ounces are in 14 grams

Liula [17]

Answer:

.493835 to be exact or .5 if your round

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

The length of overline CD is 12 units. C^ prime D^ prime is the image of overline CD under a dilation with a scale factor of n.

Rufina [12.5K]

Answer:

A, D , and E

Step-by-step explanation:

We have that:

$\overline{CD} = 12 \: units$

$\overline{C'D'}$

is the image of CD after a dilation of scale factor n.

We use the relation between the image length and object length:

$\overline{C'D'} = n \times \overline{CD}$

Option A

If n=3/2, then

$\overline{C'D'} = \frac{3}{2} \times 12 = 3 \times 6 = 18 \: units$

This is true.

Option B

If n=4, then

$\overline{C'D'} = 4 \times 12 = 36 \: units$

This is false.

Option C

If n=8, then

$\overline{C'D'} = 8 \times 12 = 96 \: units$

This too is false.

Option D

If n=2, then

$\overline{C'D'} = 2 \times 12 = 24 \: units$

This is true

Option E

If n=3/4, then

$\overline{C'D'} = \frac{3}{4} \times 12$

$\overline{C'D'} = 3 \times 3 = 9 \: units$

This is also true.

4 0

3 years ago