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hjlf
2 years ago
7

X - (-7) = -10 Write the subtraction equation as an addition equation

Mathematics
2 answers:
Delvig [45]2 years ago
7 0

Answer:

-17

Step-by-step explanation:

x+7=-10

x=-10-7

x=-17

butalik [34]2 years ago
5 0

Answer:

-10+x= -7

Step-by-step explanation:

Are you on k12?

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Please help! Best answer will get brainliest!
marysya [2.9K]
The answer is -110.
8 0
3 years ago
Approximate the change in the volume of a sphere when its radius changes from r= 5ft to r= 5.1ft (v(r)= 3/4 pi r^3)?
leva [86]

Answer:

18.03 cubic feet

Step-by-step explanation:

Hello,

Step 1

find the volume of the sphere when radius= 5 ft

v(r)= \frac{3}{4} \pi r^3\\v(5)= \frac{3}{4}\pi (5\ ft)^3\\v(5)= \frac{3}{4}\pi *125\ ft^{3} \\v(5)=294.52\ cubic\ feet\\

Step 2

find the volume of the sphere when radius= 5.1 ft

v(r)= \frac{3}{4}\pi r^3\\v(5.1)= \frac{3}{4} \pi (5.1\ ft)^3\\v(5.1)= \frac{3}{4}\pi *132.651\ ft^{3} \\v(5.1)=312.551\ cubic\ feet\\\\

Step 3

Compare the Volumes to find the change

\frac{v(r_{2})}{v(r_{1})} =\frac{312.551}{294.52} =1.06

the volumen of the sphere with radius = 5.1 is 1.06 times bigger than the first one(r=5)

Now, find the change

change= {v(r_{2})-{v(r_{1})}} \\change=312.551\ cubic\ feet\ -294.52 cubic feet \\ change=18.031\ cubic\ feet

change=18.03 cubic feet

Have a great day.

4 0
3 years ago
Just need help with one more question. Three times a number divided by two is the number divided by 4. Find the number.
Andrei [34K]

3n ¥ 2 = n ¥ 4

If 3n is cubed

9n you divide 9 by 2 then divide that answer by 4

4 0
3 years ago
True or false: Two lines with undefined slopes are parallel to each other and parallel to the y axis
BlackZzzverrR [31]
Correct! lines that have undefined slopes are always parallel to the y-axis as the change in x is 0. A gradient is calculated by  the change in y divided by the change in x and anything divided by 0 is referred to as undefined.
 
\frac{y_{1}- y_{2}  }{x_{1}- x_{2} }

(calculation for a gradient)


Hope that helps sorry if its a bit confusing :)
5 0
3 years ago
Dan pays £714.73 a year in his car insurance. The insurance company reduces the price by 4.1%. How much does the insurance cost
FrozenT [24]

Answer:

£682.57

Step-by-step explanation:

Dan pays £714.73 a year in his car insurance.

The price was reduced by 4.1%

To find the new cost of the insurance, we simply need to find 4.15% of £714.73 and then subtract that from the initial price of the insurance (£714.73)

4.5% of 714.73 is:

\frac{4.5}{100} * 714.73 = £32.16

Then, the cost of the insurance now is:

£714.73 - £32.16 = £682.57

The insurance now costs £682.57

4 0
3 years ago
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