MATHEMATICS HIGH SCHOOL

If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?A. 2 hours and 24 minutes
B. 3 hours and 12 minutes
C. 3 hours and 44 minutes
D. 4 hours and 10 minutes
E. 4 hours and 33 minutes

Answers

Answer 1
Answer:

Answer:No A

Step-by-step explanation:

2hours 24 minutes

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Megan has 25 phone numbers stored in her cell phone. Abby has some phone numbers stored in her cell phone. Together they have a total of 61 phone numbers stored. If n = the number of phone numbers Abby has stored in her cell phone, write a mathematical sentence to express the information above.

Answers

Answer:

25+n =61

Step-by-step explanation:

Given that Megan has 25 phone numbers stored in her cell phone. Abby has some phone numbers stored in her cell phone. Together they have a total of 61 phone numbers stored.

If n= the number of phone numbers Abby has stored in her cell phone

then we have sum of phone numbers both have

25+n =61

n=61-25=36
25 + n = 61
-------------------

Long division 150 divided by 12

Answers

150÷12 = 
CORRECT SOLUTION:
15 goes into 12 once so 150÷12 = 1
The remainder is 3 because 15-12 =3
30÷12 = 2
The remainder is 6 because 30-24=6
ad a decimal point and a 0                                                                         60÷12=5
CORRECT ANSWER: 12.5
150 ÷ 12

12 I 150

there is no twelve in one, so it is just zero
       0
12 I 150

In 15, there is 1 twelve, because 12 × 1 = 12
       01
12 I 150
      -12
       030

There are 2 twelves in 30, because 2 × 12 = 24
       012
12 I 150
      -12
       030
        -24
         06

Put a decimal point after the quotient and 150 to continue from the remainder
       012.
12 I 150.
      -12
       030
       -24
        060

There are exactly 5 twelves in 60, 5 × 12 = 60
       012.5
12 I 150.0
      -12
       030
        -24
          060
           -60
            00     no remainder

150 ÷ 12 = 12.5

What is the sum of two numbers is 30. The sum of the greater number and three times lesser number is 53

Answers

x+y=30....1
x+3y=53.......2
from equ 1
x=30-y......3
sub in equ 2
30-y+3y=53
30+2y=53
2y=53-30
2y=23
y=23/2 =11.5
sub in equ 3
x=30-11.5
x=18.5

What is the volume of a rectangular prism that is 35 meters by 15 meters by 22 meters?

Answers


A "rectangular prism" is a shape like a brick or a shoebox.

The volume of any rectangular prism is

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The question gives you all the numbers.
All you have to do is multiply um.

What dose 91x17 equal

Answers

If you put 91 times 17 in a calculator, you get 1547. 1547 is your answer.
91*17=1547
This is because you multiply 91*10 and then multiply 91*7 and add the products together.

What does the law of cosines reduce to when dealing with a right triangle? A. The Pythagorean theorem B. The formula for a triangle's area C. The law of sines D. The formula for a triangle's area

Answers

Cosine law formula is:

a^(2) = b^(2) + c^(2) - 2*b*c*cos(A)

where A is an angle opposite from side a.
If angle a is 90 degrees that means that cos(90) is 0 which leaves us with
a^(2) = b^(2) + c^(2)

This is Pythagoras theorem where a is the hypothesis and b and c are smaller sides of triangle

Answer is A)
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