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3 years ago

Semeet uses 0.4 gallon of gasoline each hour moving lawns. how much gas does she use in 4.2 hours

Mathematics

2 answers:

DochEvi [55]3 years ago

7 0

Answer:

1.68 gallons of gas

Step-by-step explanation:

0.4*4.2=1.68

Vlad1618 [11]3 years ago

6 0

Answer:

1.68 gallons of gasoline

Step-by-step explanation:

0.4*4.2=1.68

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The equati...

marin [14]

Answer:

x = 7.5

Step-by-step explanation:

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3 years ago

Read 2 more answers

A regular heptagon has a side length of 13.9 and an apothem of 14.4. Find the area of the regular heptagon.

aev [14]

Answer: 700.56

Step-by-step explanation:

A heptagon has 7 sides, therfore a regular heptagon will have 7 equal sides

n = 7 (number of sides)

s = 13.9 (length of each sides of the heptagon)

r = 14.4 (The apothem)

The area of the regular heptagon can be calculated by:

Area = ½ n × s × r

Area = ½ × 7 × 13.9 × 14.4

Area = 700.56 square units

8 0

3 years ago

What is 20% of 40, work it out

Darina [25.2K]

Hey there

Answer:

20% of 40 is 8 .

Step-by-step explanation:

In this question we are given a number that is 40 . And we have asked to find 20% of it .

Solution : -

$\longmapsto \qquad \: \: 20\% \times 40$

We know that ,

Percent ( % ) represent 1/100

So ,

 $\longmapsto \qquad \: \: ( 20 \times \dfrac{1}{100}) \times 40$ 

or ,

 $\longmapsto \qquad \: \: \dfrac{20}{100} \times 40$ 

Now cancelling zero :

$\longmapsto \qquad \: \: \dfrac{2 \cancel{0}}{1 \cancel{0} \cancel{0}} \times 4 \cancel{0}$

We get ,

$\longmapsto \qquad \: \: 2 \times 4$

$\longmapsto \qquad \: \: \blue{\underline{\boxed{\frak{8}}}} \quad \bigstar$

Therefore , 20% of 40 is 8 .

<h2>#Keep Learning</h2>

6 0

2 years ago

1/7 of all students achieved great success in the written exercise in mathematics. 3/7 very good success. 2/7 good success, whil

laila [671]

Answer:

x = 28

Step-by-step explanation:

Let the total number of students = x

x/7 + 3x/7 + 2x/7 + 4 = x If that is all there is. If it isn't the problem can't be done. Combine like terms.

x(1 + 3 + 2)/7 + 4 = x

x (6/7) + 4 = x Subtract 6x/7 from both sides

4 = x - 6x/7

4 = 7x/7 - 6x/7 Combine

4 = 1/7x Multiply both sides by 7

4*7 = 7x / 7

x = 28

6 0

2 years ago

Evaluate the polynomial when (a) x = 0 and (b) x=2

Lostsunrise [7]

Step-by-step explanation:

hjadbs bdsahdgoa

7 0

3 years ago