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3 years ago

7. If a school has 70 computers in the ratio of 3 desktops for every 4 laptops, how many

Mathematics

1 answer:

stealth61 [152]3 years ago

6 0

Step-by-step explanation:

As ratio of desktops to laptops=3:4

Take no. of desktops= 3x

Take no. of Laptops=4x

Total no. of desktops+ Total no. of laptops = Total no. of computers

3x+4x=70

7x=70

x=10

Hence, the total no, of desktops= 3x

Hence, Total no. of desktops= 3×10

=30 desktops

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A recipe calls for blueberry muffins cost for 2 3/4 cup of blueberries. You are making 1/3 of the recipe. How much blueberries s

tester [92]

Answer: 8/9 cups

Step-by-step explanation:

The word 'of' means 'times' as far as fractions are concerned. In this case, we have 1/3 of 2 1/3.

First, it is a good idea to make 2 1/3 an improper fraction - as 8/3, so now we have:

1/3 of 8/3, but since 'of' means 'times' we have,

1/3 x 8/3 = 8/9

The answer is 8/9 cups.

7 0

3 years ago

Solve the equation or formula for the indicated variable.

alex41 [277]

Subtract 3 both sides first. R-3=ts²

next, divide both sides by t, (R-3)/t=s²

finally, take the square root of both sides

√(R-3)/t = s. 2nd choice.

3 0

3 years ago

Read 2 more answers

I need help with math, I have no idea what I'm doing

Masteriza [31]

A. (x+3)(4x+5)
(multiply x with 4x+5 then multiply 3 with 4x+5)
=4x^2+5x+12x+15
=4x^2+17x+15
b,c, and d are similar

5 0

3 years ago

E. Solve the Inequality

olganol [36]

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$\blue{\textsf{\textbf{\underline{\underline{Question:-}}}}$

Solve the Inequality.

$\blue{\textsf{\textbf{\underline{\underline{Answer:-}}}}$

x<-4

$\blue{\textsf{\textbf{\underline{\underline{How\:to\:Solve:-}}}}$

First, add 6x on both sides:

-2x+3+6x<-13

Add the x's:

4x+3<-13

Now, subtract 3 on both sides:

4x<-13-3

4x<-16

Divide by 4 on both sides:

x<-4

So the values of x that are less than -4 will make the given inequality true.

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7 0

2 years ago

Which inequality is NOT true if y = -5?

sertanlavr [38]

Answer:

c is the answer

Step-by-step explanation:

solution

$3y + 9 \geqslant - 15$

$3( - 5) + 9 \geqslant - 15$

$- 15 + 9 \geqslant - 15$

$- 6 \geqslant - 15$

therefore the equation is not true

6 0

3 years ago