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3 years ago

The product of a 7 and a number.

Mathematics

1 answer:

Virty [35]3 years ago

8 0

it would look like this: x times 7 -> 7x

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Drag steps of the solution into order to solve for x in the equation 5(x – 7) = 50.

ch4aika [34]

Answer:

x=17

Step-by-step explanation:

5x-35=50

+35 +35

_________

5x=85

÷5 ÷5

__________-

x=17

Hope this helps :D

And if u could pls give me brainly tysm if u do!!

8 0

3 years ago

Find the missing length

natka813 [3]

Answer:

x = 45

Step-by-step explanation:

Corresponding sides of similar triangles will be in same ratio.

$\dfrac{x}{x+18}=\dfrac{20}{28}$

Cross multiply

x*28 = 20*(x+18) {Use distributive method}

28x = 20x + 360

28x - 20x = 360

8x = 360

x = 360/8

x = 45

3 0

2 years ago

Kelly uses cruise control to drive at a constant speed. She travels first 192 miles in 3 hours. At the rate, how long will it ta

ioda

Answer:

Step-by-step explanation:

rate = d / t

rate = 192 / 3

rate = 64 miles / hour

Now you want to know how long it can take to get 448 miles

d = r * t

t = d / r

t = 448/64

t = 7 hours.

You could actually do it using proportions.

192/3 = 448/x Cross multiply

192*x = 448*3

192*x = 1344 Divide by 192

x = 1344/192

x = 7

Do this the way you feel is the best way.

5 0

2 years ago

Read 2 more answers

PLEASE HELP ME as soon as possible!!

Alenkasestr [34]

Answer:

1/3 is answer.

I hope you got it. I had added solved answer too.

plz mark brainliest

8 0

3 years ago

On a standardized exam, the scores are normally distributed with a mean of 165 and astandard deviation of 40. Find the z-score o

vladimir1956 [14]

The Z-score is calculated by the formula below

$\begin{gathered} z-score=\frac{(x-\mu)}{\sigma}_{} \\ \mu=\operatorname{mean} \\ \sigma=s\tan dard\text{ deviation} \\ x=\text{score} \end{gathered}$

Step 2: Substitute the given parameters in the formula

$\begin{gathered} z-\text{score}=\frac{145-165}{40} \\ Z=-\frac{20}{40} \\ Z=-\frac{1}{2} \\ Z=-0.5 \end{gathered}$

Hence, the z-score of a person who scored 145 on the exam is -0.5

8 0

1 year ago