2 years ago

HELP PLEASE! will give brainliest

Mathematics

1 answer:

Alisiya [41]2 years ago

3 0

<h2>2 units down</h2><h2>1 unit to the left</h2>

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there are 90 girls in third year, 25 of whom Study biology what percentage of third year girls study biology

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27.7% of third year girls study biology

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1 year ago

A contractor combined x tons of a gravel mixture that contained 10 percent gravel G, by weight, with y tons of a mixture that co

White raven [17]

Answer:

The value of x would be $\frac{3}{5}y$ or $\frac{3}{8}z$

Step-by-step explanation:

Given,

x tons of 10% gravel G mixture is mixed with y ton of 2% gravel G to obtain 5% gravel mixture,

Thus, gravel G in x ton + gravel in y ton = gravel G in the resultant mixture,

⇒ 0.1x + 0.02y = 0.05(x+y),

0.1x - 0.05x = 0.05y - 0.02y

0.05x = 0.03y

$\implies x = \frac{0.03}{0.05}y=\frac{3}{5}y----(1)$

Now, resultant mixture is z ton,

i.e. $z=x+y$

$\implies y = z - x$

From equation (1),

$x=\frac{3}{5}(z-x) = \frac{3}{5}z-\frac{3}{5}x$

$x+\frac{3}{5}x=\frac{3}{5}z$

$\frac{8}{5}x=\frac{3}{5}z$

$x=\frac{3}{8}z$

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3 years ago

5,309 divided by 43 5th grade lesson 2.6

pickupchik [31]

5,309 divided by 43 is equal to 123.4651162790698

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3 years ago

Read 2 more answers

Is it carbohydrate, lipid, protein, or nucleic acid?

sasho [114]

Answer:

nucleic acid

Step-by-step explanation:

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3 years ago

A new price of an item is $39.32. The percent increase was 16%. What was the original price?

Fiesta28 [93]

Answer:

let x =the original price

then 116x/100=$39.32

116x=100×39.32

116x=3932

divide both sides by 116

116x/116=3932/116

x=33.89655

(2dp)

x=33.90

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2 years ago