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elixir [45]
4 years ago
8

I REALLY NEED HELP!

Mathematics
1 answer:
In-s [12.5K]4 years ago
6 0

Answer:

126cm

Step-by-step explanation:

if they are in a ratio then the 5 is the smallest volume and 7 is bigger

So then you do

90÷5=18

Since 5 was multipled by 18 you do it to the other side also

18x7=126

The end ratio would be

<em>9</em><em>0</em><em>:</em><em>1</em><em>2</em><em>6</em>

which is also equivalent to

<em>5</em><em>:</em><em>7</em>

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Sanaa works at a candy store. A customer bought 3.23 pounds of licorice that costs $3.99 per pound including tax. How much money
larisa86 [58]

Answer:

$12.89

Step-by-step explanation:

3.23 lb × 3.99 $/lb = 12.8877 $

Since we have to round to the nearest cent, Sanaa should collect $12.89.

8 0
3 years ago
How do i factor 15xy 18x?
ANTONII [103]
<span>How do i factor 15xy 18x?
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6 0
3 years ago
4. A solution of 60% fertilizer is to be mixed with a solution of 21% fertilizer to form 234 liters of a 43% solution. How many
solniwko [45]

Given:

A solution of 60% fertilizer is to be mixed with a solution of 21% fertilizer to form 234 liters of a 43% solution.

To find:

The quantity of the 60% solution in the mixture.

Solution:

Let x be the quantity of the 60% solution and y be the quantity of the 21% solution.

Quantity of mixture is 234. So,

x+y=234

x=234-y                  ...(i)

The mixture has 43% fertilizer. So,

\dfrac{60}{100}x+\dfrac{21}{100}y=\dfrac{43}{100}\times 234

Multiply both sides by 100.

60x+21y=10062            ...(ii)

Using (i) and (ii), we get

60(234-y)+21y=10062

14040-60y+21y=10062

-39y=10062-14040

-39y=-3978

Divide both sides by -39.

\dfrac{-39y}{-39}=\dfrac{-3978}{-39}

y=102

Putting this value in (i), we get

x=234-102

x=132

Therefore, 132 liters of the 60% solution must be used.

3 0
3 years ago
Sam took 4 courses last semester: Calculus, Biology, History, and Physics. The means and standard deviations for the final exams
frutty [35]

Answer:

Calculus

Step-by-step explanation:

Calculus: z = (94-70)/12 = 2

Bio: z = (74.5-77)/10 = -0.25

History: z = (45-53)/16 = -0.5

Physics: (70.5-60)/14 = 0.75

8 0
3 years ago
Read 2 more answers
What percent is 24% or 80?
photoshop1234 [79]
It is 30%

You enter 24 divide 80 times 100 which give you 30 as the answer
5 0
4 years ago
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