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Rzqust [24]
3 years ago
6

It takes 90 minutes to vacuum 30 vehicles. At this rate, how many minutes does it take to vacuum 7 vehicles?

Mathematics
2 answers:
Ksju [112]3 years ago
5 0
Yep 21 is correct good luck
DIA [1.3K]3 years ago
3 0

Answer: 21.

Step-by-step explanation: If you do '90 x 7' you get 630. With this, you will want to divide 630 by 30. So to simplify this, '(90 x 7) ÷ 30 = 21'

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Four less than a half of a number is 5 find the number
maw [93]
1/2n - 4 = 5
1/2n = 5 + 4
1/2n = 9
n = 9 * 2
n = 18 <==
4 0
3 years ago
Which value of x is in the solution set of the following inequality? -3+5&gt;17
Tju [1.3M]

Answer:

x = - 5

Step-by-step explanation:

Given

- 3x + 5 > 17 ( subtract 5 from both sides )

- 3x > 12 ( divide both sides by - 3 )

Remembering to reverse the inequality symbol when dividing/ multiplying by a negative quantity.

x < - 4 ← symbol reversed

The value of x that is in the solution set is x = - 5

8 0
3 years ago
Which graph represents the solution set for –4(1 – x) ≤ –12 + 2x? A. B. C. D.
melamori03 [73]

Answer:

In the attachment

Step-by-step explanation:

-4(1-x)\leq-12+2x\qquad\text{use distributive property}\\\\(-4)(1)+(-4)(-x)\leq-12+2x\\\\-4+4x\leq-12+2x\qquad\text{add 4 to both sides}\\\\4x\leq-8+2x\qquad\text{subtract 2x from both sides}\\\\2x\leq-8\qquad\text{divide both sides by 2}\\\\x\leq-4

<, > - open circle

≤, ≥ - closed circle

<, ≤ - draw the line to the left

>, ≥ - draw the line to the right

6 0
3 years ago
700 is 10 times as much as blank
creativ13 [48]

700 is 10 times as much as 70 since 70 times 10 equals 700.

70 is the answer

Hope this helps!

8 0
3 years ago
Read 2 more answers
Solve the equation for x: X^2=169
Lina20 [59]

Answer:

13

Step-by-step explanation:

Since x is squared, the inverse operation would be square root. So, the square root of 169 is 13.

5 0
3 years ago
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