Please answer these questions.

Mathematics

2 answers:

DedPeter [7]2 years ago

7 0

13) 5:4
14)12:54
15)10:1
16)3:5
17) 21:6
18)5:1
19)5:6
20)11:12

Musya8 [376]2 years ago

7 0

Answer:

Step-by-step explanation:

$13) \dfrac{5}{x}=\dfrac{20}{16}$

In the numerator, 20 ÷ 4 = 5

So, x = 16 ÷ 4 = 4

5 : 4 = 20:16

14)

$\dfrac{2}{9}=\dfrac{12}{x}$

In the numerator, 2*6 = 12

So, x = 9*6 = 54

2:9 = 12 : 54

15) $\dfrac{x}{1}=\dfrac{30}{3}$

In the denominator 3 ÷ 3 = 1

So, 30 ÷ 3 = 10

10 : 1 = 30 : 3

$16)\dfrac{x}{5}=\dfrac{21}{35}$

In the denominator, 35 ÷ 7 = 5

x = 21 ÷ 7 = 3

3 : 5 = 21 : 35

$17) \dfrac{21}{x}=\dfrac{7}{2}$

In the numerator, 7 *3 = 21

So, x = 2*3 = 6

21: 6 = 7 : 2

You might be interested in

How many stones are needed to trade for 10bricks ?

lianna [129]

You need 10 logs for 1 brick. To get 10 bricks you need 100 logs. You are collecting stones and 1 stone gets you 4 logs. That means to get 100 logs you’ll need 25 stones. That indirectly means that 25 stones gets you 10 bricks.

6 0

3 years ago

A gym teacher has 250 to spend on volleyball, she buys for volleyball nets that cost $28 volleyballs are $7 each.how many volley

MaRussiya [10]

The gym teacher has $250 to spend on volleyball equipment. She buys 4 volleyball nets for $28 each. Volleyballs cost $7 each. How many volley balls can she buy

Answer:

she can buy maximum of 19 balls.

Step-by-step explanation:

Let the number of volleyballs be x

we know that

$\text{(The cost of each volleyball net} \times \text{number of volleyball net)}+\text{(the cost of each volleyball} \times \text{number of volleyballs)}\leq \ 250$