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sergij07 [2.7K]
3 years ago
10

What is the ratio equal for 90:18

Mathematics
2 answers:
inessss [21]3 years ago
7 0
U have to think what numbers go into both those numbers
the biggest number that will go in 
9 goes into 90 and 18 
it goes to 90 ten times 
and into 18 twice 
so the ratio in its simplest form it 10:2 
Ann [662]3 years ago
4 0
To find the ratio between 2 numbers, you need to find the GCF of those 2 numbers. If the GCF is the ratio, the ratio is in it's simplest form.
GCF of 90 and 18 is 18
divide both numbers by the GCF and the final simplest ratio is 5:1
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artcher [175]

Answer:

You will need  220 mL of the 60% solution  and  80 mL of pure alcohol.

Step-by-step explanation:

Let 'x' be the amount of 50% alcohol solution and y the amount of pure alcohol.

Therefore:  

(0.5x + y)/300 = 0.65 ⇒ 0.5x + y = 190

x + y = 300

Solving the sistem of equations:

x = 220 and y = 080

Therefore, You will need

220 mL of the 60% solution

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3 years ago
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Answer:

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Step-by-step explanation:

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Write f(x)=8x^2-4x+11 in vertex form
Vlad [161]

Answer:

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or

f(x)=8(x-0.25)^{2}+10.5

Step-by-step explanation:

we have

f(x)=8x^{2}-4x+11

This is a vertical parabola open upward (because the leading coefficient is positive)

The vertex is a minimum

Convert to vertex form

Factor the leading coefficient

f(x)=8(x^{2}-\frac{1}{2}x)+11

Complete the square. Remember to balance the equation by adding the same constants to each side.

f(x)=8(x^{2}-\frac{1}{2}x+\frac{1}{16})+11-\frac{1}{2}

f(x)=8(x^{2}-\frac{1}{2}x+\frac{1}{16})+\frac{21}{2}

Rewrite as perfect squares

f(x)=8(x-\frac{1}{4})^{2}+\frac{21}{2} ----> equation in vertex form

or

f(x)=8(x-0.25)^{2}+10.5

The vertex is the point  (0.25,10.5)

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3 years ago
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Mamont248 [21]

Answer:

441.96

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dybincka [34]
You would subtract the number of plants dale potted from the total amount. 74-48=26
6 0
2 years ago
Read 2 more answers
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