1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Veseljchak [2.6K]
3 years ago
10

Simplify the expression and explain each step 8+(7+x)

Mathematics
2 answers:
Darina [25.2K]3 years ago
6 0

Answer:

15 + x (Guess)

Step-by-step explanation:

Simply ignore the x, and do 8 + 5.

Then, do 15 + x.


galben [10]3 years ago
5 0

Answer:

<u>15+x is the answer!!!</u>

Step-by-step explanation:

You might be interested in
PLEASE HELP ME!!!
Llana [10]

Answer:

Rent

Step-by-step explanation:

Yes

3 0
3 years ago
Read 2 more answers
IQ scores on the WAIS test approximate a normal curve with a mean of 100 and a standard deviation of 15. What IQ score is identi
riadik2000 [5.3K]

Answer:

IQ scores of at least 130.81 are identified with the upper 2%.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the z-score 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 is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Mean of 100 and a standard deviation of 15.

This means that \mu = 100, \sigma = 15

What IQ score is identified with the upper 2%?

IQ scores of at least the 100 - 2 = 98th percentile, which is X when Z has a p-value of 0.98, so X when Z = 2.054.

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

2.054 = \frac{X - 100}{15}

X - 100 = 15*2.054

X = 130.81

IQ scores of at least 130.81 are identified with the upper 2%.

7 0
3 years ago
Rick drove for 45 minutes on Wednesday for a distance of 34.5 miles. On Thursday, he increased his speed by 3 miles per hour, an
riadik2000 [5.3K]

Answer:

is d and a

Step-by-step explanation:

7 0
2 years ago
F(x)=7x^1/2, find f(x)
FrozenT [24]

Answer:

x=2y/7

Step-by-step explanation:

y=7x^1/2

7/2x=y

7/2x/7/2=y/7/2

4 0
2 years ago
some of the steps in the derivation of the quadratic formula are shown. step 3: –c b^2/4a=a(x^2 b/ax b^2/4a62) step 4a: –c b^2/4
wel
-converting to a common denominator

The terms -c of the left side was converted to -4ac/4a to have the same denominator of b^2/4a.
3 0
3 years ago
Read 2 more answers
Other questions:
  • How do I find 37/50 as a mixed number or percentage
    12·1 answer
  • A physical fitness association is including the mile run in its secondary-school fitness test. The time for thisevent for boys i
    7·1 answer
  • Which polynomial is a difference of two squares? x2 − 16 x2 + 16 x2 − 8 x2 + 8
    5·1 answer
  • If two lines are parallel to each other. Does that mean they are equal to each other as well?
    7·1 answer
  • What percent of 8 is 0.5?
    10·1 answer
  • Ava's aquarium is 10 inches tall 15 inches long and 8 inches wide. the aquarium is 95% filled with water. how many cubic inches
    7·1 answer
  • Annie tried to solve an equation step by step. Find Annie's mistake. *
    6·1 answer
  • Given that h(x) = 5-2x, find the value(s) of x when h(x) =3​
    9·2 answers
  • The volume of a gas in cubic centimeters, V, varies inversely with the
    11·1 answer
  • Help pls!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!