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3 years ago

Twice a number plus 8 is equal to 22

Mathematics

2 answers:

erastovalidia [21]3 years ago

8 0

Answer:

7 × 2 + 8 = 22

Step-by-step explanation:

Ulleksa [173]3 years ago

3 0

Answer: uhh I don't get it but ima try it-

Step-by-step explanation:

Let the number be x.

Twice the number = 2x

Twice the number increase by 8 = 2x+8

Twice the number increase by 8 is 22

2x + 8 = 22

The solution to this equation will be as follows:

2x = 22 – 8

2x = 7

Divide both sides by the coefficient of x,that is 2 in this case:

2x/7 = 12/2

So after you do that you get:

x = 21

I AM SO NOT SURE THIS IS THE ANSWER i think i did sum wrong

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What is the radius of the circle who’s equation is x^2 + y^2 = 9

Svetllana [295]

Answer:

r=3

Step-by-step explanation:

The equation of a circumference is $(x-a)^2+(y-b)^2=r^2$ .
Then , in this case $r^2=9$ , and then to know the value of r we just simply have to calculate the square root of 9, which is 3.

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3 years ago

Find the four rational numbers and irrational numbers between 2/5 and 5/6

Savatey [412]

The four?

Of course there are an infinite number of rationals between any two different real numbers, as well as an even bigger infinite number of irrationals.

The average will be between the numbers:

$\frac 1 2 (\frac 2 5 + \frac 5 6) = \dfrac{37}{60}$

That's a lot of work to get a number in between. We can just see

$\frac 1 2$
is between the two numbers.

The mediant, or freshman addition, will always be in between:

$\dfrac{2 + 5}{5 + 6} = \dfrac{7}{11}$

2/5=.4 and 5/6 is about .83, so

$.6 = \frac{6}{10}$

is in between as is .7, .41, .530940394 and as many rationals as we care to generate.

To get irrationals we could just add a teeny irrational to the ones we just generated, like $\frac{6}{10} + \frac{\pi}{100}$

We could just change that denominator a bit and get as many as we like.

But let's get some square roots. The geometric mean will be between

$\sqrt{ \dfrac 2 5 \cdot \dfrac 5 6 } = \dfrac{1}{\sqrt{3}}
$

That's the tangent from one of trig's biggest cliches, but I digress. It's in between.

While we're on trig cliches,

$\dfrac{1}{\sqrt{2}}$

is in between as well.

Keeping with the trig theme, also in between are

$\dfrac{\pi} 6$

and

$\dfrac{\pi}{4}$

the angles associated with the some of the above trig function values.

We could obviously go on as long as we cared to.

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3 years ago

Alice and Claire go apple picking. When they are done, Claire has 3 times as many apples in her basket as Alice has in hers. (No

ElenaW [278]

Answer:

6 apples, 21 apples, 30 apples respectively

Step-by-step explanation:

Let us first start by writing expressions so that we can easily solve for the problems below.

Let us suppose Alice is x. In this case, Claire has 3 times Alice's apples, so 3x.

1. If Alice has 2 apples (x), then Claire has 3x

3*2=6 apples

Claire has 6 apples.

2. If Alice has 7 apples (x), then Claire has 3x

3*7=21 apples

Claire has 21 apples.

3. If Alice has 10 apples (x), then Claire has 3x

3*10=30 apples

Claire has 30 apples.

I hope this helps! Please let me know if you have any further questions :)

5 0

3 years ago

You roll a 6-sided die. What is P(6)? Write your answer as a fraction or whole number.

Dimas [21]

Answer:

1/6

Step-by-step explanation:

There are six sides, so if u want to roll a six, that will be 1/6

3 0

3 years ago

Three ounces of cinnamon cost 2.40. If there are 16 ounces in 1 pound, how much does cinnamon cost per pound?

BartSMP [9]

To find how much cinnamon per pound you first divide the $2.40 by the 3 oz to find how much per ounce...so $2.40/3 = 80 cents. Then u multiply that by the 16 oz to get the amount for 1 pound...so .80x16= $12.80 per pound.
Hope it helps!

7 0

3 years ago

Twice a number plus 8 is equal to 22​

Twice a number plus 8 is equal to 22