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3 years ago

how many ounces of a 24% alcohol solution and a 29% alcohol solution must be combined to obtain 90 ounces of a 25% solution

Mathematics

1 answer:

atroni [7]3 years ago

8 0

Answer:

agregar 14 o

Step-by-step explanation:

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Ms. Wolf’s first job was at a frozen yogurt shop where she made $9 per hour. After a raise, Ms. Wolf earned $9.75 per hour. What

Ber [7]

Answer:

8 percent

Step-by-step explanation:

9.75/9 is 1.08, which means 8 percent

7 0

3 years ago

I don’t understand lol

pogonyaev

Answer:

3*r = 3

Step-by-step explanation:

$\dfrac{24}{r}=3\\\\24 = r*3\\\\\dfrac{24}{3}=r\\\\6 = r$ 6 is a solution.

$3*r=3\\\r =\dfrac{3}{3}\\\\r = 1\\$

6 is not a solution.

$7r = 42\\\\r =\dfrac{42}{7}\\\\r = 6$

6 is a solution

8 0

2 years ago

Read 2 more answers

Please help I’m stuck!!

jolli1 [7]

Answer:

130 milliliters.

Step-by-step explanation:

a drug has a ratio of 115mg:5ml. This is equivalent to 23mg:1ml. 3g=3000mg, so we divide 3000 by 23 to get 130.434783. That is how many milliliters are needed. We round it to get 130 mL.

3 0

2 years ago

Read 2 more answers

An airline uses many different types of airplanes. The table below shows some of the attributes of the different airplanes.What

loris [4]

there is no table to get our answers off of.

Step-by-step explanation:

4 0

2 years ago

Y is directly proportional ( x+2)² <br> when x = 8 y= 250 <br> find y when x = 4

sladkih [1.3K]

Answer:

y=90 when x=4

Step-by-step explanation:

We are given that

$y\propto (x+2)^2$

When x=8 and y=250

We have to find the value of y when x=4

$y=k(x+2)^2$

Where k= Proportionality constant

Substitute the values

$250=k(8+2)^2$

$250=100k$

$k=\frac{250}{100}$

$k=5/2$

Now, substitute x=4 and k=5/2

Then, we get

$y=\frac{5}{2}(4+2)^2$

$y=\frac{5}{2}\times 36$

$y=90$

8 0

3 years ago