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3 years ago

13- 0.7w + 8x when w = 12 and x = 1/2

Mathematics

1 answer:

cupoosta [38]3 years ago

8 0

Simplify the expression and you get: 8.6
Hope this helps!

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How many pounds of candy that cells for $0.66 per Ib must be mixed with candy that sells for $1.31 per Ib to obtain 9 Ib of a mi

faltersainse [42]

Answer: $\frac{306}{65}$ pounds

Step-by-step explanation:

Let x pounds of $ 0.66 per lb candies mixed with y pounds of $ 1.31 per lb candies to obtain 9 lb of $ 0.97 per lb candies,

Hence, we can write,

x + y = 9 ------- (1)

And, 0.66 of x + 1.31 of y = 0.97 of (x + y)

⇒ 66 x + 131 y = 97 (x+y)

⇒ 66 x +131 y - 97 x - 97 y = 0

⇒ -31 x + 34 y = 0 ------(2)

By solving equation (1) and (2)

We get,

$x=\frac{306}{65}$ and $y=\frac{279}{65}$

Hence, the quantity of 0.66 per lb candies = $\frac{306}{65}$ pounds

7 0

3 years ago

What can you multiply to eliminate a variable?

AlladinOne [14]

Answer:

A. First equation by -2

Step-by-step explanation:

if you multiply the first equation by -2, the -4y cancels 4y

7 0

3 years ago

Currently, Nora is 3 time as old as damon. In 8 years she will be only 2 time as old as Damon. How old will Damon will be in 8 y

Ann [662]

In 8 years Damon will be 16 year's old.

We have Nora who 3 time as old as Damon and in 8 years she will be only 2 time as old as Damon.

We have to determine how old will Damon be in 8 years.

<h3>If your present age is x and your sister is 4 years elder than you. Than what will be her age after 5 years from now.</h3>

Your present age = x.

Hence, your sister's present age = x + 4.

After five years, your age = x + 5.

Hence, your sister's age will be = x + 9.

According to question, we have -

Assume that the present age of Damon is x.

Then, Nora's age will be = y = 3x.

After 8 years -

Damon's age = x + 8

Nora's age = 3x + 8

Therefore -

3x + 8 = 2(x + 8)

3x + 8 = 2x + 16

x = 8

Hence, in 8 years Damon will be = 8 + 8 = 16 year's old.

To solve more questions on Age determination, visit the link below -

brainly.com/question/14580151

#SPJ1

6 0

1 year ago

Find the length of the missing side. Give your answer in the simplest radical form.

taurus [48]

Answer:

x = $2\sqrt{5}$

Step-by-step explanation:

Use Pythagorean theorem,

Hypotenuse² = base² + altitude²

x² = (√8)² + 4²

= 8 + 16

= 20

x = √20 = $\sqrt{2*2*5} = 2\sqrt{5}$

x = $2\sqrt{5}$

6 0

3 years ago

A restaurant chain wants to change their oil from peanut oil to canola oil in order to save money. However, the restaurant wants

yulyashka [42]

Answer:

yes

Step-by-step explanation:

3 0

3 years ago