3 years ago

Suppose the mean value of a population is 51, and many samples are taken

Mathematics

1 answer:

zaharov [31]3 years ago

8 0

I think you’re answer should be c

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Julie spent 2/3 of an hour running and 5/6 of an hour swimming. How much longer did she swim than run?

aniked [119]

Running = 2/3

Swimming = 5/6

5/6 - 2/3 = 5/6 - 4/6 = 1/6

Answer : She spent 1/6 hour longer swimming than running.

4 0

3 years ago

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In the figure below, angle y and angle x form vertical angles. Angle y forms a straight line with the 60° angle and the 70° angl

Dmitry_Shevchenko [17]

Answer:

The value of x is 50°.

Step-by-step explanation:

We know that:

x = y
2(70 + 60) + x + y = 360

Work:

2(130) + x + x = 360
=> 260 + 2x = 360
=> 2x = 360 - 260
=> 2x = 100
=> x = 50

Hence, the value of x is 50°.

Hoped this helped.

$BrainiacUser1357$

7 0

2 years ago

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I’m confused on this

dexar [7]

$\huge\boxed{x=25}$

The mistake is in Step 1. The solver should have also squared $9$ when squaring the other side of the equation.

<h3>Correctly solving</h3>

$\begin{aligned}\sqrt{3x+6}&=9\\(\sqrt{3x+6})^2&=9^2\\3x+6&=81\\3x+6-6&=81-6\\3x&=75\\\frac{3x}{3}&=\frac{75}{3}\\x&=25\end{aligned}$

4 0

2 years ago

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Solve x: 60 pts if u can figure it out and the first one gets brainiest answer

jenyasd209 [6]

Answer:

11.65

Step-by-step explanation:

3x+99x=102x

1188/102=11.65

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2 years ago

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If the two triangles shown below are congruent, select the corresponding 1 point

nadya68 [22]

Answer:

SSS

Step-by-step explanation:

The two triangles both share a side (the middle line), and it is shown that the other lines are congruent to each other. So all 3 sides are congruent, meaning SSS is the postulate that proves this.

4 0

3 years ago