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4 years ago

The difference between a number and 12 is 20.

2 answers:

5 0

The answer could be 32 or -8. You have to add 20 to 12 and subtract 20 from 12 to find both numbers that have a difference of 20.

alekssr [168]4 years ago

3 0

Shouldn't the answer be 32 because difference means subtraction and 12 + 20 is the way to find it?

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Find the mean, median, and range of the following set of numbers: 23,25,27,21,24,27

Natali5045456 [20]

Answer:

Mean = 24.5

Median = 24.5

Mode = 27

Step-by-step explanation:

8 0

3 years ago

A trapezoid has an area of 42 square miles. One base is 4 miles long. The height measures 6 miles. What is the length of the oth

loris [4]

The length of other base of trapezoid is 10 miles

Step-by-step explanation:

The formula for area of trapezoid is:

$A=\frac{h}{2}(b_1+b_2)$

We know that

A = 42 square miles

b_1 = 4 miles

h = 6 miles

Putting the values

$42=\frac{6}{2}(4+b_2)\\42=3(4+b_2)\\42=12+3b_2\\Subtracting\ 12\ from\ both\ sides\\42-12=12+3b_2-12\\3b_2=30\\Dividing\ both\ sides\ by\ 3\\\frac{3b_2}{3}=\frac{30}{3}\\b_2=10\ miles$

The length of other base of trapezoid is 10 miles

Keywords: Area of trapezoid

Learn more about area at:

#LearnwithBrainly

7 0

4 years ago

How do I expand the brackets for the equation 5x(6x+1)?

Wewaii [24]

Step-by-step explanation:

30x+5×=35×

35x is your answer

8 0

3 years ago

20. A chef prepared five chocolate tortes for a dinner party. The guests consumed 2 5⁄16 tortes. How many tortes are left?

borishaifa [10]

4 16/16 This is the same as 5.
-2 5/16
------------------
2 11/16

6 0

4 years ago

How do you substitute 5x+4y=0 , x-y=9

-BARSIC- [3]

Steps:
1.Change x-y=9 into slope-intercept form.
Subtract x on both sides
-y=-x + 9
Divide everything by -1
Y= x-9
2. Now substitute the y in 5x + 4y=0 for x-9
5x + 4(x-9)= 0
5x + 4x-36=0
3. Now combine like terms
9x-36=0
4. Add 36 on both sides
9x= 36
5. Divide each side by 9
6. X= 4
7. Now substitute the x in x-y=9 for 4
4-y=9
8. Subtract 4 on both sides
-y= 5
9. Divide everything by -1
10. Y= -5
11. Your answer is x= 4 and Y= -5 or (4,-5)

5 0

4 years ago