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2 years ago

Use Pythagorean Theorem to solve for D. Round your answer to the nearest tenth

Mathematics

2 answers:

creativ13 [48]2 years ago

4 0

Answer:

18.9

Step-by-step explanation:

hope this helps

Aneli [31]2 years ago

3 0

The answer is B. 18.9

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What is the value of k ? 1/2 k+6=4k-8 -4 -3 3 4

nasty-shy [4]

The value of k in 

1/2 k+6=4k-8

is 4

7 0

3 years ago

1.) Multiply. (x – 7)(2x – 7)

drek231 [11]

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3 years ago

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9 Find the values of r and y. с A 95° B 4x ro D E

Inga [223]

Answer:

x = 18°, y = 167°

Step-by-step explanation:

In right triangle sum of two angles is 90°

4x + x = 90°
5x = 90°
x = 90°/5
x = 18°

Angle y is exterior angle and equals non-adjacent interior angles

y = 4x + 95° =
4*18° + 95° =
72° + 95° =
167°

4 0

2 years ago

Problem PageQuestion Calcium levels in people are normally distributed with a mean of mg/dL and a standard deviation of mg/dL. I

SIZIF [17.4K]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The calcium level that is the borderline between low calcium levels and those not considered low is $c = 8.68$

Step-by-step explanation:

From the question we are told that

The mean is $\mu = 9.5\ mg/dL$

The standard deviation $\sigma = 0.5 \ mg/dL$

The proportion of the population with low calcium level is $p =$ 5% = 0.05

Let X be a X random calcium level

Now the P(X < c) = 0.05

Here P denotes probability

c is population with calcium level at the borderline

Since the calcium level is normally distributed the z-value is evaluated as

$P(Z < \frac{c - \mu}{\sigma } ) = 0.05$

The critical value for 0.05 from the standard normal distribution table is

$t_{0.05} = -1.645$

=> $\frac{c - \mu}{\sigma } = -1.645$

substituting values

$\frac{c - 9.5}{0.5 } = -1.645$

=> $c - 9.5 = -0.8225$

=> $c = 8.68$

6 0

3 years ago

PLS HELP WILL MARK BRAINLIEST

gavmur [86]

Answer:

1. Rolling a number less than 5

The numbers on a standard dice are 1, 2, 3, 4, 5, and 6. Therefore it is possible to roll a 6, but it is much more likely to be 1-5, simply because there are more of them.

2. Rolling a 2

Again, it is more likely that the result will be one of the other 5 numbers. But obviously a 2 is still an option, so it's not impossible.

3. Rolling a number less than 10

Every option is less than 10 so it is certain.

4 0

3 years ago