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3 years ago

3/7×=33 what is the answer to this math problem

Mathematics

1 answer:

valkas [14]3 years ago

8 0

Answer:

Step-by-step explanation:

3/7x=33

multiply each side by 3/7

x=99/7

x=14.142

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Divide 7/9 by -11/7 then simplify

gayaneshka [121]

Invert the divisor and then multiply 7/9 by your result:

7 -7 -49
--- * ------ = ---------
9 11 99

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3 years ago

HELP PLS ILL ADD BRAINLIEST

Korvikt [17]

Answer:

Step-by-step explanation:

cause i wrote it on paper tho

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3 years ago

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4 What is the length of a rectangle if its width is 7 feet and its area is 84 square feet?

statuscvo [17]

Answer:

The length of the rectangle would be 12.

Step-by-step explanation:

Since area= length times width, to find the length just divide the total by the width. 84 divided by 7 is 12

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3 years ago

Rylee shopped at a clothing store, where she spent $36.50 plus 8% tax. Then, she spent $25 to refuel her car at the gas station.

Alexxx [7]

Answer:

The total charge to her account balance is $83.22

Step-by-step explanation:

We are told that she initially spends $36.50 at the clothing store plus 8% tax.

8% of $36.50 is:

8 / 100 * 36.50 = $2.92

Her total spending at the clothes store is therefore

$36.50 + $2.92 = $39.42

She then spend $25 to refuel her car.

She then bought groceries worth $23.50 and handed over a coupon for a 20% discount on her purchase.

20% discount means 20% of her cost was deducted from what she was supposed to pay and she only paid 80% of the amount she was supposed to pay.

80% of $23.50 is:

80 / 100 * 23.50 = $18.80

Therefore, her total cost (change in her account balance) is:

$39.42 + $25 + $18.80 = $83.22

The total charge to her account balance is $83.22.

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3 years ago

For which intervals below is the average rate of change less than or equal to zero?

77julia77 [94]

Answer:

Intervals A and C only

Step-by-step explanation:

we know that

The graph show a vertical parabola open upward

The vertex represent a minimum

The vertex is the point (-6,-9)

Remember that the vertex is a turning point

That means

In the interval (-∞,-6) the function is decreasing (rate of change is negative)

In the interval (-6,∞) the function is increasing (rate of change is positive)

therefore

<u><em>Verify each case</em></u>

Interval A) A -13 ≤ x ≤ -10

Belong to the decreasing interval, so the rate of change is negative

Interval B) -5 ≤ x ≤ 0

Find the rate of change

the average rate of change is equal to

$\frac{f(b)-f(a)}{b-a}$

In this problem we have

$a=-5$

$b=0$

$f(a)=f(-5)=9$

$f(b)=f(0)=0$

Substitute

$\frac{9-0}{0+5}=9/5$

Interval B the rate of change is positive

Interval C) --10 ≤ x ≤ -2

Find the rate of change

the average rate of change is equal to

$\frac{f(b)-f(a)}{b-a}$

In this problem we have

$a=-10$

$b=-2$

$f(a)=f(-10)=-5$

$f(b)=f(-2)=-5$

Substitute

$\frac{-5+5}{-2+10}=0$

Interval C the rate of change is zero

therefore

Intervals A and C only

6 0

3 years ago

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