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Luda [366]
3 years ago
14

4 bags of cement do 18 m² how many m^2 can be done with seven bags

Mathematics
1 answer:
lisov135 [29]3 years ago
7 0

Answer:

31.5 m^2

Step-by-step explanation:

To find the amount for 7 bags, create a proportion.

\frac{4}{18} =\frac{7}{y}

To solve for y, cross multiply numerator to denominator of each fraction.

4(y) = 18(7)

4y= 126

y= 31.5

7 bags will do 31.5 m^2

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Answer:

D.

Step-by-step explanation:

Complementary angles are two angles whose measures add to 90°.

A.

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Sum = 80°

No

B.

m<AFB = 40°

m<DFE = m<EFD = 30°

Sum = 70°

No

C.

m<AFC = 100°

Sum > 100°

No

D.

m<BFC = 100° - 40° = 60°

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Answer: D.

8 0
2 years ago
(hg^(-3))/(w^(-4) k^0 )
Svetlanka [38]
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4 0
3 years ago
Select all expressions that represent a correct solution to the equation 6(x+4)=20
Sergeeva-Olga [200]

Answer:

D. 20 ÷ 6 − 4

E. 1/6(20 − 24)

F. (20−24) ÷ 6

Step-by-step explanation:

6(x + 4) = 20

6(x) + 6(4) = 20

6x + 24 = 20

     - 24  - 24

6x = -4

/6    /6

x = -4/6 or x = -2/3

D. 20 ÷ 6 − 4

20/6 - 4

20/6 - 24/6

-4/6 = -2/3

E. 1/6(20 − 24)

1/6(-4)

-4/6 = -2/3

F. (20 − 24) ÷ 6

- 4 / 6

-4/6 = -2/3

Hope this helps!

3 0
2 years ago
Find a formula for the nth term of the arithmetic sequence a1=-17 a2=-12 a3=-7 a4=-2
MAVERICK [17]

Answer:

Step-by-step explanation:

Recursive formula

a1 = -17

a^n = a^n-1 + 5

Explicit formula:

a^n = -17 + (n-1) * 5

3 0
3 years ago
How does a digit in the ten thousand place compere to a digit in the thousand place
Mademuasel [1]
Ten thousand - 10,000

thousand literally just haves 1,000


if the twenty is before the three zeros, it would be 20,000 which is twenty thousand. its the same with other numbers. its super simple!
7 0
3 years ago
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