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3 years ago

10

What is the value of x? Enter your answer in the box. x =

1 answer:

tresset_1 [31]3 years ago

5 0

These are vertical angles, meaning they are congruent by definition. Thus, you can set the angles' expressions equal to each other and solve for x this way:

3x + 50 = 6x - 10
3x + 60 = 6x
60 = 3x
20 = x

Answer:
x = 20

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Which expression correctly represents the perimeter of a rectangle that is 12 centimeters long and 7 centimeters wide?

iren2701 [21]

D.
That is what i do 12 x 2 will equal 24 since the are 2 parallel sides like in a rectangle. and it will be the same concept on the other side 7 x 2 = 14 and 24 + 14 will equal 38
hope this helped and is how you are supposed to work it

3 0

3 years ago

Read 2 more answers

How would you write 0.5 Repeating as a fraction

PilotLPTM [1.2K]

Let <em>x</em> = 0.555…

Then 10<em>x</em> = 5.555…

Subtract one from the other to get

10<em>x</em> - <em>x</em> = 5.555… - 0.555…

Notice how the fractional parts on the right cancel. This leaves you with

9<em>x</em> = 5

and so

<em>x</em> = 5/9

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3 years ago

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There are 20 cars competing in a race. In how many ways can the cars be awarded first, second, and third place?

valentinak56 [21]

Answer

im pretty sure its 1140

Step-by-step explanation:

7 0

3 years ago

GIVING BRAINLEST, hi, I need an answer that is 100% correct because this test determines if I'm passing or not, thank you.

zubka84 [21]

Circumference of circle = π x d
diameter = 3x2= 6m
3.14 x 6 = 18.84m (circumference)

Area of a circle = π x r x r
=3.14 x 3 x 3
=28.26m2 (area)

3 0

3 years ago

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Scott is on his school's academic team. On average, it takes Scott 4 minutes, with a standard deviation of 0.25 minutes, to solv

uysha [10]

Answer:

15.87% is the chance that Scott takes more than 4.25 minutes to solve a problem at an academic bowl.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 4 minutes

Standard Deviation, σ = 0.25 minutes

We standardize the given data.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(more than 4.25 minutes to solve a problem)

$P( x > 4.25) = P( z > \displaystyle\frac{4.25 - 4}{0.25}) = P(z > 1)$

$= 1 - P(z \leq 1)$

Calculation the value from standard normal z table, we have,

$P(x > 4.25) = 1 - 0.8413 = 0.1587 = 15.87\%$

Thus,15.87% is the chance that Scott takes more than 4.25 minutes to solve a problem at an academic bowl.

8 0

3 years ago