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iren [92.7K]
3 years ago
15

Hello, happy Friday, I am just here with some geometry questions.

Mathematics
1 answer:
irga5000 [103]3 years ago
3 0

Answer:

VW = 43.2

Step-by-step explanation:

First, we can see that VZ = 88 - 55 = 33.

Then by the Triangle Proportionality Theorem, we can write that:

\displaystyle \frac{55}{33}=\frac{72}{VW}

Simplify:

\displaystyle \frac{5}{3}=\frac{72}{VW}

Cross-multiply:

216=5VW

So:

\displaystyle V=\frac{216}{5}=43.2

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3 years ago
if a sample size 40 is drawn from the population that has mean 276 and a variance of 81, what is the probability that the mean o
lapo4ka [179]

Answer:

The probability is 0.017429

Step-by-step explanation:

We start by calculating the z-score

Mathematically;

z-score = (x-mean)/SD/√n

In this case;

x = 273

mean = 276

SD = √(variance) = √81 = 9

n = 40

Substituting these values into the z-score formula, we have that;

z = (273-276)/9/√40

z = -2.11

So we proceed to get the probability

the probability in this case is;

P( z < -2.11)

We can use the normal distribution table for this

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3 years ago
What the area of this shape is. Please help need to be down by tomorrow!!
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7 0
2 years ago
Read 2 more answers
A large explosion causes wood and metal debris to rise vertically into the air with an initial velocity of 96 feet per second. T
Vladimir [108]

Answer:

the height after 2 seconds will be 128 feet

Step-by-step explanation:

Data provided in the question:

Initial velocity = 96 feet per second

The function of height of falling debris above the ground is given as:

h(t) = 96t - 16t²

A) To find height after time t = 2 seconds

substituting the value of time in the above function, we get

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or

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3 years ago
What is the value of x in the equation 2(5x + 4) = 17?
andrew11 [14]

Answer:

\frac{9}{10}

Step-by-step explanation:

2(5x+4)=17,\\10x+8=17,\\10x=9,\\x=\frac{9}{10}

Analysis:

2(5x+4)=17

  • Distribute

10x+8=17,

  • Subtract 8 from both sides to isolate x

10x=9

  • Divide both sides by 10 to isolate x

x=9/10 (ans)

6 0
3 years ago
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