3 years ago

Write two expressions where the solution is 30

Mathematics

2 answers:

mel-nik [20]3 years ago

7 0

Answer:

(15+0)2

Step-by-step explanation:

Elena-2011 [213]3 years ago

7 0

(60/4)*2
Answer : 30

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How can you use mental math to determine that 2800 divide equals 400

AURORKA [14]

2800 ÷ 400

Cross out 2 zeros from both numbers, then you have 28 ÷ 4 = 7

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2 years ago

If the volume of a prism is 30 ft3, what is the volume of a pyramid with the same base area and height?

-BARSIC- [3]

Answer:

10 ft cubed

Step-by-step explanation:

The volume of a pyramid is 1/3 the volume of a prism with the same base area & height.

30/3=10

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2 years ago

A bag contains 5 2/5kg of sand. The bag has a hole in it. Every 10 minutes, 1 2/3kg of sand escapes from the bag. After 20 minut

fenix001 [56]

Quantify of sand in a bag =

$= \: 5 \frac{2}{5} \ \:$

$= \frac{(5 \times 5 +2) }{5}$

$= \frac{27}{5} \: kg$

Quantity of sand that escapes in every 10 minutes :-

$= 1 \frac{2}{3} kg$

Quantity of sand that will escape in 20 minutes :-

$= 1 \frac{2}{3} \times 2$

$= \frac{(3 \times 1 + 2)}{3} \times 2$

$= \frac{5}{3} \times 2$

$= \frac{10}{3}$

Quantity of sand that will remain in the sand bag :-

$= \frac{27}{5} - \frac{10}{3}$

$= \frac{(27 \times 3)}{15} - \frac{(10 \times 5)}{15}$

$= \frac{81}{15} - \frac{50}{15}$

$= \frac{31}{15}$

$= 2 \frac{1}{5} \: kg$

$therefore \: , \: 2 \frac{1}{5} \: kg \: sand \: is \: left \: in \: the \: bag \: .$

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2 years ago

Lionel created a picture to hang on his wall. The drawing is below. Each circle has a radius of 8cm. The circles touch each othe

Vikki [24]

Answer:

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Step-by-step explanation:

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7 0

1 year ago

Read 2 more answers

If f(x)= 3x + 10x and g(x)=5x - 3 find (f+g)(x)

Illusion [34]

Answer:

18x-3

Step-by-step explanation:

f(x)= 3x + 10x

g(x)=5x - 3

f(x)+g(x) = 3x + 10x + 5x - 3

Combine like terms

= 18x -3

6 0

2 years ago