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Bad White [126]
3 years ago
14

Find the value of x.

Mathematics
1 answer:
In-s [12.5K]3 years ago
5 0

Answer:

x = 19 cm

Step-by-step explanation:

3+3+2+5+6 = 19

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Jamie is trying to work out the surface area of the cuboid below. Spot any mistakes and write the correct answer.
umka21 [38]

Step-by-step explanation:

The dimensions of the cuboid are 5 cm, 7 cm and 9 cm.

The formula for the surface area of the cuboid is as follows :

A=2(lb+bh+hl)

We have,

b = 9 cm, l = 7 cm and h = 5 cm

So,

A=2(9\times 7+9\times 5+7\times 5)\\\\A=2\times 143\\\\A=286\ cm^2

Jamie forgets to multiply 143 by 2 as the formula for surface area contains 2 as well.

7 0
3 years ago
Find the GCF of 39 and 52.
natka813 [3]

First factor each number

39=3*13

52=4*13

Now find the greatest common factor, which in our case is 13.

Answer: 13

4 0
3 years ago
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Ludmilka [50]

Answer:

13 is the answer.

Step-by-step explanation:

7 0
3 years ago
Write an algebraic expression for the phrase : Seven less than three times a number
Natali [406]

Answer:

I'm not completely sure but try either 3x - 7

or 3 - 7x

Step-by-step explanation:

Hope one of them helps!

3 0
3 years ago
PLEASE HELP ME I NEED THIS ANSWER ASAP!!! What is the area of this figure?
AnnZ [28]
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