Which expression is equivalent to 2(7b + 5)?

Mathematics

1 answer:

DENIUS [597]2 years ago

4 0

2(7b + 5) will equal to 14b+10

Explanation:

2 times 7b= 14b

2 times 5= 10

You might be interested in

Problem Page Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $16

lozanna [386]

If their call lasts 11 minutes the cost will be the same

7 0

2 years ago

A ladder leaning against a building makes an angle of 65 degrees with the ground and reaches a point on the building 20 feet abo

lesya692 [45]

22 feet. Using the sine rule theory: 20/sin(65)=x/sin(90). You know that it's 90 degrees because you assume the ground and the building make a 90 degree angle. So, you cross multiply and get 20sin(90)/xsin(65) and solve for x.

5 0

3 years ago

Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those scores are normally distribute

balu736 [363]

Answer:

The area of the shaded region is 0.9082.

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:

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

The Z-score measures how many standard deviations the measure is from the mean. 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, which is the area of the shaded region, is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 100, \sigma = 15, X = 120$