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
rodikova [14]
2 years ago
6

1) Simplify: -7(2m - 8) + 6m 2) Expand: -10(1 - 6r)

Mathematics
1 answer:
ankoles [38]2 years ago
4 0

Answer:

1)\: -7(2m - 8) + 6m

Use distributive property:

-14m+56+6m

-8m+56

____________

2)\: -10(1 - 6r)

Use distributive property:

-10+60r

You might be interested in
Proszę o pomoc!! Daje naj.
Karo-lina-s [1.5K]

Answer:

a is 60 b is 48

Step-by-step explanation:and i will get the rest to you when i am done

5 0
3 years ago
What is the solution set of the following equation? 1/5x^2=x-4/5
9966 [12]
I think the answer might be x=4/8
3 0
3 years ago
Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby. Thi
Dovator [93]

Complete question:

Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby this mention is designed to increase the likelihood that each baby will be a girl, but assume that the method has no effect so the probability of a girl is 0.5. Assume that the group consists of 36 couples.

A) Find the mean and standard deviation for the number of girls in groups of 36 births.

B) Use the range rule of thumb to find the values separating results that are significantly low and significantly high.

C) Is the result of 33 girls significantly high? A result of 33 girls would suggest the method is effective or is not effective?

Answer:

a) mean = 18

Standard deviation =3

b) low range = 12

High range = 24

c) The result of 33 girls is significantly high. Yes, the method is effective.

Step-by-step explanation:

Given:

p = 0.5

n = 36

a) The mean is the product of n and p

Mean u = np

u = 36 * 0.5 = 18

The standard deviation is the square root of the product of n and p&q.

S.d ó = \sqrt{npq}

= \sqrt{np(1-p)}

= \sqrt{36(0.5)(1-0.5)} = \sqrt{9} = 3

b) To find the range rule of thumb:

• For low range

Low range = u - 2ó

= 18 - (2 * 3)

= 12

• High range

= u + 2ó

= 18 + (2*3)

= 24

c) The result is significantly high, because 33 is greater than 24 girls.

A result of 33 girls would prove the method as effective.

8 0
3 years ago
I need help on this:(
Alex Ar [27]

Answer:

Not to sure if this is correct but I think it is 6: 1 : 18

pls msg me if you need explanation

3 0
3 years ago
Find the work done when a crane lifts a ​-pound boulder through a vertical distance of feet. Round to the nearest​ foot-pound.
goldenfox [79]

Answer:

72000ft-1b

hope it helps

please mark brainliest

8 0
3 years ago
Other questions:
  • The three angles of a triangle are represented by the expressions
    5·1 answer
  • Y=(x-4)(x+20) find vertex
    12·1 answer
  • Four numbers from the set 0 to 9, including 0 and 9, are used to create a personal identification number. Once a number is used,
    9·1 answer
  • Write the equation of the line that is parallel to the x-axis and goes through the point (1, 4).
    8·2 answers
  • A plane is flying from Albuquerque new Mexico to Austin Texas so far it has flown 161 miles or 23% of the total distance of the
    7·1 answer
  • What is the correct symbol to replace the box and compare the expression?
    12·1 answer
  • PLEASE HELP ME I WILL GIVE BRAINLIEST
    15·2 answers
  • Please help will mark brainliest if correct
    13·1 answer
  • PLZZZZZZZZ help me not desperate but gotta get done by today its asking this- Brian tossed a paper cup a total of 25 times and r
    9·1 answer
  • Solve for x, 2^2=128
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!