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3 years ago

Kevin is 2 times as old as Gabriela. 12 years ago, Kevin was 6 times as old as Gabriela. How old is Gabriela now?

Mathematics

1 answer:

aleksley [76]3 years ago

3 0

Answer:

gabrielas age is 15

Step-by-step explanation:

Let Gabriela's age be x, then Kelvins age is 2x

12 years ago, Gabriela's age was x - 12 and Kelvin's age was 6(x - 12)

i.e. 6x - 72 = 2x - 12

4x = 60

x = 60/4 = 15

Therefore, Kelvin's age is 2(15) = 30 years old

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5) The scale of a map is 1 inch : 10 miles.

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Answer:

Step-by-step explanation:

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3 years ago

Ean: jenny wants to make three pillow cases using fourteen feet of fabric. She plans to use an equal amount of fabric for each p

Veseljchak [2.6K]

Answer:

Approximately 4.67 feet of fabric is required for one pillow case.

Step-by-step explanation:

We are given the following in the question:

Number of pillow cases to be made by Jenny = 3

Amount of fabric Jenny has = 14 feet

Each pillow case use same amount of fabric.

Amount of fabric used to make 1 pillow case =

$=\dfrac{\text{Amount of fabric}}{\text{Number of pillow cases}}\\\\=\dfrac{14\text{ feet}}{3}\\\\\approx 4.67\text{ feet}$

Thus, approximately 4.67 feet of fabric is required for one pillow case.

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3 years ago

How many radians does the minute hand of a clock rotate through over half an hour? How many degrees?

Ivanshal [37]

Answer:

So minute hand will rotate $\pi radian$ in half an hour

Step-by-step explanation:

In one hour minute hand of clock rotate about 360°

So in half an hour minute hand clock rotate $\frac{360}{2}=180^{\circ}$

We have to find how many minute hand rotate in radian

For conversion of degree to radian we have to multiply with $\frac{\pi }{180}$

So $180^{\circ}=180\times \frac{\pi}{180 }=\pi radian$

So minute hand will rotate $\pi radian$ in half an hour

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4 years ago

For what values of x does the binomial 2x−1 take on a positive value?

Mashutka [201]

1). 2x-1>0
2x>1
x>½

2) 21-3y<0
-3y<-21
y>7

3) 5-3c>80
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c<-25

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3 years ago

What is the answer to this

NeX [460]

The answer would be the first choice. When you reflect a shape across the x-axis, the y coordinates of every points/vertices become of the opposite of what they usually were.
For example, the y coordinate in (1, -5) {{-5 being the y coordinate) once reflected upon the x axis would be (1, 5).

On the other hand, if the y coordinate were positive it would become negative.

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3 years ago