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
Lynna [10]
2 years ago
7

Use the distributive property to write an expression that is equivalent to the expression below. 8(-x-1/2)

Mathematics
1 answer:
Harlamova29_29 [7]2 years ago
7 0

Answer:

I think is -8x-4 let me know if im right

Step-by-step explanation:

You might be interested in
This is an angle whose measure is exactly 90°
Radda [10]

Answer:

A right angle

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What is the area of a rectangular driveway measuring 20 feet long and 15 feet wide?<br>​
alukav5142 [94]

Answer:

300 square feet

Step-by-step explanation:

Area is found by multiplying the length and width of a surface

5 0
3 years ago
Given that the universe set U = {baseball, basketball, football, tennis ball, soccer ball, volleyball} and that the set A is the
DedPeter [7]
2 because it is a baseball card
3 0
2 years ago
Let the abbreviation PSLT stand for the percent of the gross family income that goes into paying state and local taxes. Suppose
gavmur [86]

Answer:

Number of families that should be surveyed if one wants to be 90% sure of being able to estimate the true mean PSLT within 0.5 is at least 43.

Step-by-step explanation:

We are given that one wants to estimate the mean PSLT for the population of all families in New York City with gross incomes in the range $35.000 to $40.000.

If sigma equals 2.0, we have to find that how many families should be surveyed if one wants to be 90% sure of being able to estimate the true mean PSLT within 0.5.

Here, we will use the concept of Margin of error as the statement "true mean PSLT within 0.5" represents the margin of error we want.

<u></u>

<u>SO, Margin of error formula is given by;</u>

       Margin of error =  Z_(_\frac{\alpha}{2}_ ) \times \frac{\sigma}{\sqrt{n} }

where, \alpha = significance level = 10%

            \sigma = standard deviation = 2.0

            n = number of families

Now, in the z table the critical value of x at 5% ( \frac{0.10}{2} = 0.05 ) level of significance is 1.645.

SO,        Margin of error =  Z_(_\frac{\alpha}{2}_ ) \times \frac{\sigma}{\sqrt{n} }

                          0.5   =  1.645 \times \frac{2}{\sqrt{n} }

                         \sqrt{n} =\frac{2\times 1.645 }{0.5}

                         \sqrt{n} =6.58

                           n  =  6.58^{2}

                               = 43.3 ≈ 43

Therefore, number of families that should be surveyed if one wants to be 90% sure of being able to estimate the true mean PSLT within 0.5 is at least 43.

4 0
3 years ago
Five more than the product of two and a number, decreased by seven;
PIT_PIT [208]

Answer:

First, write the expression

✔ 5 + 2a – 7

.

Second,

✔ substitute

8 in for the variable, a.

Third,

✔ simplify

by using

✔ order of operations

The answer is

✔ 14

5 0
3 years ago
Read 2 more answers
Other questions:
  • A line is drawn so that it passes through the points (4,0) and (2,3)
    9·1 answer
  • The measure of an angle is 140°. What is the measure of its supplementary angle
    7·2 answers
  • Last year, the textbook for a statistics class was $144. This year the textbook for the same class is $168. Determine the increa
    13·1 answer
  • What are these fractions in simplest form: 14/19, 4/32, 2/9, 23/31
    9·1 answer
  • At the grocery store checkout, you watch the register as it rings up your purchases and coupons. The prices are as follows: $2.9
    6·2 answers
  • Am independent variable is a variable (often demoted by y) whose variation depends on that if another. True or false
    13·2 answers
  • What is the value of x
    8·1 answer
  • If Dante spins the spinner below 75 times, how many times should he expect it to land on "U"?​
    8·1 answer
  • I need help guys now na po ​
    8·1 answer
  • Determine the slope of a line that contains the points (6,7) and (5,1)​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!