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Anastaziya [24]
3 years ago
8

Brian runs 4 miles in 34 minutes. How many minutes per mile does Brian run?

Mathematics
2 answers:
Kipish [7]3 years ago
7 0

Answer:

8.5

Step-by-step explanation:

Alexeev081 [22]3 years ago
7 0

Hello!

We can find the answer to this question by dividing the amount of time that Brian ran by the amount of miles he ran:

34/4 = 8.5

Brian runs 8.5 minutes per mile.

I hope this helps you! Have a lovely day!

- Mal

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which of the following numbers is lowest or furthest to the left on the number line 48, 95, 21, 64, 53
Tamiku [17]

Answer: I am not to sure but I believe that the correct answer is 21


Step-by-step explanation: I believe this is the  correct answer because on the number line the numbers generally follow a sequenced order beginning with the lowest number and increasing towards larger numbers. The lowest number in this question is 21 and in the American systems we read left to right causing the number line to begin with the lowest number from the left and going to the right. The order would be 21, 48, 53, 64, 95.


3 0
3 years ago
Read 2 more answers
10) -15xy + 25x ????????????????????
Ierofanga [76]

Factor (−15x)(y)+25x

−15xy+25x

=5x(−3y+5)

Answer:

5x(−3y+5)

6 0
3 years ago
Find the product of all real values of r for which 1/2x=r-x/7
Dahasolnce [82]

Answer:

r = \±\sqrt{14

Product = -14

Step-by-step explanation:

Given

\frac{1}{2x} = \frac{r - x}{7}

Required

Find all product of real values that satisfy the equation

\frac{1}{2x} = \frac{r - x}{7}

Cross multiply:

2x(r - x) = 7 * 1

2xr - 2x^2 = 7

Subtract 7 from both sides

2xr - 2x^2 -7= 7 -7

2xr - 2x^2 -7= 0

Reorder

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

Multiply through by -1

2x^2 - 2xr +7= 0

The above represents a quadratic equation and as such could take either of the following conditions.

(1) No real roots:

This possibility does not apply in this case as such, would not be considered.

(2) One real root

This is true if

b^2 - 4ac = 0

For a quadratic equation

ax^2 + bx + c = 0

By comparison with 2x^2 - 2xr +7= 0

a = 2

b = -2r

c =7

Substitute these values in b^2 - 4ac = 0

(-2r)^2 - 4 * 2 * 7 = 0

4r^2 - 56 = 0

Add 56 to both sides

4r^2 - 56 + 56= 0 + 56

4r^2 = 56

Divide through by 4

r^2 = 14

Take square roots

\sqrt{r^2} = \±\sqrt{14

r = \±\sqrt{14

Hence, the possible values of r are:

\sqrt{14 or -\sqrt{14

and the product is:

Product = \sqrt{14} * -\sqrt{14}

Product = -14

8 0
3 years ago
What is a similar rectangle?
amid [387]
<h3>What are similar shapes?</h3>

When applying a scale factor, similar shapes are enlarged versions of one another. All of the matching angles and lengths in related shapes are equal and in the same ratio.

Rectangle is also a kind of shape. So, defining similar rectangle two rectangles must have proportional sides in order for them to be identical (form equal ratios) i.e., ratio of the two longer sides should equal the ratio of the two shorter sides.

Steps to find similar rectangle in math:

  1. Choose the pairs of corresponding sides on each side.
  2. Determine the sides' ratios.
  3. Verify that the ratios are identical.

To know more about similar rectangles, follow link:

brainly.com/question/17905285

#SPJ4

3 0
11 months ago
Which table does not represent a proportional relationship?
bogdanovich [222]

Answer:

A does not have any proportional relationship.

Step-by-step explanation:

All of the other tables have obvious relationships, leaving A to be the answer.

3 0
3 years ago
Read 2 more answers
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