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borishaifa [10]
3 years ago
13

in a fundraising committee of 90 people the ratio of men to women is 7:2. find the number of women required to join the existing

committee so that the ratio of men to women is 5:4​
Mathematics
1 answer:
LuckyWell [14K]3 years ago
7 0

Hello,

Step-by-step explanation:

90 = 9 x 10 = (7 + 2) x 10 = 70 + 20

70 men and 20 women

\frac{70}{5}  = \frac{20 + X}{4}

56 = 20 + X ⇔ X = 36

Answer : + 36 women

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Stabiliti daca marimile ale caror valori sunt trecute in tabelele urmatoare sunt direct proportionale.
kvv77 [185]

Vă rugăm să găsiți imaginea întrebării atașate mai jos:

Răspuns:

A este proporțională

B este proporțională

C nu este proporțional

D este proporțional

E nu este proporțională

F este proporțional

Explicație pas cu pas:

Pentru a determina proporționalitatea:

Obținem constanta proporționalității

Pentru valorile din tabelul 1;

Luând primul punct:

x = 1; y = 5

1 α 5

1 = 5k

k = 1/5

Test:

y = 15

x = k * y

x = 1/5 * 15; x = 3

Prin urmare; (a) este proporțională

B.)

x = 2; y = 6

2 α 6

2 = 6k

k = 2/6

k = 1/3

Test:

y = 15

x = k * y

x = 1/3 * 15; x = 5

Prin urmare; (b) este proporțională

C.)

x = 2; y = 6

7 α 3,5

7 = 3,5k

k = 7 / 3,5

k = 2

Test:

y = 5

x = 2 * 3.5

x = 7

Prin urmare; (c) nu este proporțională

x = 0,5; y = 1

0,5 α 1

0,5 = k

Test:

y = 4

x = k * y

x = 0,5 * 4; x = 2

Prin urmare; (d) este proporțională

x = 0,2; y = 2

0,2 α 2

0,2 = 2k

k = 0,2 / 2

k = 0,1

Test:

y = 4,5

x = 0,1 * 4,5

x = 0,45

Prin urmare; (e) nu este proporțională

x = 1; y = 12

1 α 12

1 = 12k

k = 1/12

Test:

y = 84

x = 1/12 * 84

x = 7

Prin urmare; (f) este proporțională

7 0
3 years ago
7 belts and 5 wallets cost $ 225.Write the equation.​
OleMash [197]

Answer:

7b+5w=$225

I think so.

3 0
2 years ago
A baker divides 21.4 pounds of flour equally between five recipes. How much flour did the bakery use for each recipe?
worty [1.4K]

Answer:

4.28 per recipe

Step-by-step explanation:

21.4 divided by 5 = 4.28 per recipe

4 0
3 years ago
Read 2 more answers
The volume of a storage tank is 1695.6 m3. The radius is 6m. How tall is the storage<br> tank?
Andreas93 [3]

Answer:

the storage tank is a cylinder.

The formule to calculate the volume is:

v =\pi{r}^{2}  \times h

h = v \div \pi {r}^{2}

h = 1695.6 \div 36 \times \pi = 14.992

7 0
3 years ago
Read 2 more answers
Which of the following prefixes is the best for measuring small quantities like the thickness of a dime A.milli B.kilo C.deci D.
never [62]
Milli is the best to measure the thickness of a dime. A is your answer.
6 0
4 years ago
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