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3 years ago

7. Use the figure to find the approximate perimeter

Mathematics

1 answer:

zheka24 [161]3 years ago

3 0

Answer:

the answer is 62in.

( that is the formula of a parallelogram which is 2(a+b))

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Which equation represents the solution of x3 = 72?

Effectus [21]

3x = 72 /3
X = 24

X^3 = 72
X = (72)^(1/3)
X= 4.160167646

4 0

3 years ago

1.) How is the graph of y equals negative 2 x squared minus 5 different from the graph of y equals negative 2 x squared?

romanna [79]

-2x^2 - 5 is same shape as -2x^2 except that the whole graph is translated verticall downwards 5 units

5 0

3 years ago

The proportion of traffic fatalities resulting from drivers with high alcohol blood levels in 1982 was approximately normally di

SSSSS [86.1K]

Answer:

a) The proportion of states would you expect to have more than 65% of their traffic fatalities from drunk driving is 0.59518.

b) The 25th percentile of this distribution is a 0.5231 proportion of deaths due to drunk driving.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by

$Z = \frac{X - \mu}{\sigma}$

After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the percentile of this measure.

In this problem, we have that:

Mean 0.569 and standard deviation 0.068. So $\mu = 0.569, \sigma = 0.068$

a. What proportion of states would you expect to have more than 65% of their traffic fatali- ties from drunk driving?

This is the value of X when Z has a pvalue of 0.65.

Z has a pvalue of 0.65 between $Z = 0.38$ and $Z = 0.39$ . So, we use $Z = 0.385$

$Z = \frac{X - \mu}{\sigma}$

$0.385 = \frac{X - 0.569}{0.068}$

$X - 0.569 = 0.068*0.385$

$X = 0.59518$

The proportion of states would you expect to have more than 65% of their traffic fatalities from drunk driving is 0.59518.

b. What proportion of deaths due to drunk driving would you expect to be at the 25th percentile of this distribution?

This is the value of X when Z has a pvalue of 0.25.

Z has a pvalue of 0.65 between $Z = -0.67$ and $Z = -0.68$ . So, we use $Z = -0.675$

$Z = \frac{X - \mu}{\sigma}$

$-0.675 = \frac{X - 0.569}{0.068}$

$X - 0.569 = 0.068*(-0.675)$

$X = 0.5231$

The 25th percentile of this distribution is a 0.5231 proportion of deaths due to drunk driving.

3 0

3 years ago

( Q * 5 ) + 20 = WHEN Q = 10

Oliga [24]

Just subsitute 10 for Q
pemdas
(Q*5)=(10 times 5)=50
(50)+20=70
the answer is 70

4 0

4 years ago

Read 2 more answers

A club has 15 girls and 20 boys as members. The president wants to break the club into groups, with each group containing the sa

Alenkasestr [34]

Answer:

you can make 8 groups with 2 girls and 1 boy in each group or you can make 4 groups with 4 girls and 2 boys in each group

Step-by-step explanation:

6 0

4 years ago