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4 years ago

Can someone please teach me how to solve this equation?

Mathematics

1 answer:

Usimov [2.4K]4 years ago

6 0

Is that plus after multiply

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In a fund-raising committee of 45 people, the ratio of men to women is 7 : 2. Find the number of women required to join the exis

bagirrra123 [75]

Answer:

18 women

Step-by-step explanation:

Sum the parts of the ratio, 7 + 2 = 9 parts

Divide 45 by 9 to find the value of one part of the ratio.

45 ÷ 9 = 5 ← value of 1 part, thus

7 parts = 7 × 5 = 35 ← number of men

2 parts = 2 × 5 = 10 ← number of women

We require to change the ratio to 5 : 4

The 5 part of the ratio represents the number of men, thus

35 ÷ 5 = 7 ← value of 1 part of the ratio, thus

4 × 7 = 28 ← number of women

Number of women required to join existing committee = 28 - 10 = 18

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4 years ago

Two missiles are initially 5000 miles apart. They travel along a straight line directly towards one another, one traveling at 20

Goshia [24]

d = 5,000 mi the distance between the missiles

v1 = 2,000 mph the rate of the first missile

v2 = 1,000 mph the rate of the second missile

t = 1 min = 1/60 hr

Since distance = speed*time the distance 1 minute before the impact is:

v1t + v2t = t(v1 + v2) = (1/60)(2,000 + 1,000) = 50 miles.

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3 years ago

F (x) = 81 Superscript StartFraction x Over 4 EndFraction Baseline = 3 Superscript x

ella [17]

Answer:

Step-by-step explanation:

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3 years ago

What is 8 3/4 - 7 1/2

lara31 [8.8K]

let's firstly convert the mixed fractions to improper fractions and then subtract, bearing in mind that the LCD of 4 and 2 is 4.

$\bf \stackrel{mixed}{8\frac{3}{4}}\implies \cfrac{8\cdot 4+3}{8}\implies \stackrel{improper}{\cfrac{35}{4}}~\hfill \stackrel{mixed}{7\frac{1}{2}}\implies \cfrac{7\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{15}{2}} \\\\[-0.35em] ~\dotfill\\\\ \cfrac{35}{4}-\cfrac{15}{2}\implies \stackrel{\textit{using the LCD of 4}}{\cfrac{(1)35~~-~~(2)15}{4}}\implies \cfrac{35-30}{4}\implies \cfrac{5}{4}$

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3 years ago

In a random sample of 400 customers at a fast food restaurant, it was determined that 124 customers ordered a salad. If the rest

charle [14.2K]

The answer is 2/3 because the cat and the mouse had a child name catouse and then he built a space ship but yea the answer is really 2/3

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4 years ago

Read 2 more answers