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Talja [164]
3 years ago
7

Mary can run 5 kilometers in 18.75 minutes.

Mathematics
1 answer:
trasher [3.6K]3 years ago
8 0

Answer:

30 minutes

Step-by-step explanation:

Find the unit rate (time per SINGLE kilometer).

5/5=1 18.75/5=3.75

Multiply 3.75 (unit rate) by 8.

3.75 x 8=30

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Consider the equation and its solution.
madreJ [45]
30 Me mark as brainlist
6 0
2 years ago
Need help sovling this for class
Reil [10]

By the knowledge and application of <em>algebraic</em> definitions and theorems, we find that the expression - 10 · x + 1 + 7 · x = 37 has a solution of x = 12. (Correct choice: C)

<h3>How to solve an algebraic equation</h3>

In this question we have an equation that can be solved by <em>algebraic</em> definitions and theorems, whose objective consists in clearing the variable x. Now we proceed to solve the equation for x:

  1. - 10 · x + 1 + 7 · x = 37     Given
  2. (- 10 · x + 7 · x) + 1 = 37   Associative property
  3. -3 · x + 1 = 37     Distributive property/Definition of subtraction
  4. - 3 · x = 36     Compatibility with addition/Definition of subtraction
  5. x = 12     Compatibility with multiplication/a/(-b) = -a/b/Definition of division/Result

By the knowledge and application of <em>algebraic</em> definitions and theorems, we find that the expression - 10 · x + 1 + 7 · x = 37 has a solution of x = 12. (Correct choice: C)

To learn more on linear equations: brainly.com/question/2263981

#SPJ1

4 0
2 years ago
If the population has gone up 20,000 in 6yr what percent is that
Sedaia [141]
I think it is 3333% #I guessed
6 0
3 years ago
13.
Solnce55 [7]

Answer:

answer would be E. 16,000,000

Step-by-step explanation:

if you put 8,180 x 2,099 in the calculator you get 17,169,820

just round that number and you get 16,000,000

hope this helped!!

4 0
2 years ago
In circle O, AP = √10, PB = x and BC = 3. Find the value of x.
Artyom0805 [142]

Answer:

The value of x is 2\ units

Step-by-step explanation:

we know that

Applying the  tangent-secant theorem

AP^{2}=PB*PC

substitute the values and solve for x

\sqrt{10}^{2}=x*(x+3)

10=x^{2}+3x

x^{2}+3x-10=0

using a graphing tool

to solve the quadratic equation

The solution is x=2\ units

see the attached figure

7 0
3 years ago
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