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Salsk061 [2.6K]

3 years ago

11

Alex usually runs for 21 hours a week, training for a marathon. if he is unable to run for 3 days, describe how to find out how

many hours of training time he loses, and write the appropriate integer to describe how it affects his time.

1 answer:

Molodets [167]3 years ago

6 0

Divide the number of hours he has to run that week by the number of days he needs to run it in

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Solve 2 more please?

murzikaleks [220]

11.

(87+91+86+x)/4=90.

x=96.

13.

50×y > 130.

the lowest number could be 3, because 50×2=120, which is less than 130.

8 0

3 years ago

Read 2 more answers

What is the greatest common factor of 39, 42, and 33

castortr0y [4]

Answer:

The greatest common factor of 39, 42, and 33 is 3

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

snow_tiger [21]

Positive if I looked at graph correctly

8 0

3 years ago

Solve the following system of equations. What is one x-value of a solution?

gulaghasi [49]

Answer:

There is some mistake in the question, because the solutions are x = -1.445 and x = -34.555

Step-by-step explanation:

Given the functions:

f(x) = x² + 4x + 10

g(x) = -32x - 40

we want to find the points at which f(x) = g(x).

x² + 4x + 10 = -32x - 40

x² + 4x + 10 + 32x + 40 = 0

x² + 36x + 50 = 0

Using quadratic formula:

$x = \frac{-b \pm \sqrt{b^2-4(a)(c)}}{2(a)}$

$x = \frac{-36 \pm \sqrt{36^2-4(1)(50)}}{2(1)}$

$x = \frac{-36 \pm 33.11}{2}$

$x_1 = \frac{-36 + 33.11}{2}$

$x_1 = -1.445$

$x_2 = \frac{-36 - 33.11}{2}$

$x_2 = -34.555$

5 0

3 years ago

-30=5(x+1)−30=5(x+1) proszę szybką odpowiedź :)

den301095 [7]

Answer:

x = -7

Step-by-step explanation:

The given equation is :

-30=5(x+1)

We need to solve the equation.

Use associative property on RHS.

-30 = 5x+5

Subtract 5 from both the sides.

-30-5 = 5x+5-5

-35 = 5x

x = -7

Hence, the value of x is -7.

7 0

3 years ago