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Elena L [17]
3 years ago
9

Two times the sum of a number and twelve is 40. What is the number?

Mathematics
2 answers:
ch4aika [34]3 years ago
7 0

Answer:

the number is 8

Step-by-step explanation:

2(12 + n) = 40

24 + 2n = 40

2n = 16

n = 8

stich3 [128]3 years ago
5 0

Answer:

8

Step-by-step explanation:

n= that number

2(n+12)=40

2n+24=40

    -24  -24

2n=16

2n/2=16/2

n=8

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Martina runs 4 miles in 30 minutes. At the same rate, how many minutes would she take to run 10 miles?
mezya [45]

Answer:

75 minutes or 1 hour an 15 minutes

Step-by-step explanation:

It takes Martina to run 7.5 minutes for a mile.

Multiply 7.5 by 10 = The minutes for 10 miles

7 0
3 years ago
Read 2 more answers
A granola recipe calls for 2 1/3 (mixed number 2 and 1/3) cups of almonds. A bag of almonds contains 2 cups. To make 2 1/2 (mixe
marta [7]

Answer:

4 1/6 cups of almonds left

Step-by-step explanation:

Granola recipe = 2 1/3 cups of almonds

2 1/2 batches of granola = 2 1/3 cups of almonds × 2 1/2

= 2 1/3 × 2 1/2

= 7/3 × 5/2

= (7*5)/(3*2)

= 35/6

= 5 5/6 cups of almonds

A bag of almonds = 2 cups

5 bags of almonds = 10 cups

Cups of almonds left = 10 cups - 35/6 cups

= 60-35/6

= 25/6

= 4 1/6 cups

3 0
3 years ago
How many books would need to be purchased from each club for the club's to cost the same
juin [17]
First club 
y= 40 + 10x              y= 40 + 10(8)                =120

Second club 
y= 15x                      y= 15(8)                         =120

now plug a number of the answer choices in each equation until you get the same result for both

The answer is C
4 0
3 years ago
Find the absolute mean deviation of this data set:<br> 8, 8, 4, 12
nasty-shy [4]

Answer:

2 is the absolute mean deviation

Step-by-step explanation:

absolute mean deviation is

the average of the differences of the data from the average

8, 8, 4, 12

1. take the average

8+8+4+12=32 -> 32/4 = 8

2. subtract each number from this average

8 - 8 = 0

8 - 8 = 0

4 - 8 = 4 (there are no negative answers)

12 - 8 = 4

3. take the average of these subtractions

0+0+4+4=8 -> 8/4 = 2

4. answer: 2 is the absolute mean deviation

8 0
2 years ago
What is the volume of this sphere?
Nina [5.8K]

Answer:

Step-by-step explanation:

volume of the sphere=4/3 π (4)³=256 /3 π=256/3 ×3.14≈267.95 m³

7 0
3 years ago
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