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Umnica [9.8K]
3 years ago
11

Write a proportion for each situation. Then solve

Mathematics
2 answers:
slavikrds [6]3 years ago
8 0

Answer:

  • c. x = 10
  • d. z = 120

Step-by-step explanation:

Given proportions

<u>Equations as per ratio and solution for each</u>

c. ..................................

  • 25 ÷ 2 1/2 = 100 ÷ x
  • 25 ÷ 5/2 = 100 ÷ x
  • x = 100×5/2÷25
  • x = 10

100 yards in 10 seconds

d. ..................................

  • 480 ÷ 4 = z ÷ 1
  • 120 = z
  • z = 120

120 heartbeats in 1 minute

Margarita [4]3 years ago
3 0

Answer:

<h2>c.   y = 10 secs.</h2><h2>d.   z = 120 heartbeats</h2>

Step-by-step explanation:

c.  ratio and proportion:

<u> 25 yards</u>   =   <u>  100 yards</u>

  2.5 sec.             y sec.

cross multiply:

100 (2.5) = 25 (y)

simplify:

y = 250 / 25

y = 10 secs.

------------------------------------------

d.  ratio and proportion:

<u> 480 heartbeats </u> =  <u>  z heartbeats  </u>

     4 mins.                      1 min.

cross multiply:

4 (z) = 480 (1)

simplify:

z = 480 / 4

z = 120 heartbeats

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3a
Jet001 [13]

Answer:

Option D is correct.

VS = 20 units.

Step-by-step explanation:

The complete question is contained in the attached image to this answer.

From the image attached and the additional information about the triangles, it is evident that that triangle VSW is similar to triangle QSR.

Hence, we can write the ratio as

(VS/QS) = (VW/QR)

VS = 2a

QS = 2 × VS = 2 × 2a = 4a

VW = 2a - 2

QR = 3a + 6

(2a)/(4a) = (2a - 2)/(3a + 6)

Cross multiplying,

2a (3a + 6) = 4a (2a - 2)

3a + 6 = 2 (2a - 2)

3a + 6 = 4a - 4

4a - 3a = 6 + 4

a = 10

VS = 2a = 20 units.

Hope this Helps!!!

4 0
4 years ago
Im not so good at math ;-;
Pie

Answer:

1. 660.52

2. 572.56

3. 283.53

4.254.47

5. 63.62

6. 380.13

Step-by-step explanation:

do πr²

r = radius

if you have a diameter like question 4 divide by 2 and you get radius

3 0
3 years ago
Read 2 more answers
Solve the proportion: x12=34
KATRIN_1 [288]
X~2.8
X=2.8333333333333.....
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3 years ago
Find the product 1/1/4OOOOJOOOO...!!! Casi todas las cuentas de facebook están siendo duplicadas. Gracias por no aceptar una nue
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Okay, tu no tienes un Facebook...tienes una pregunta?
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4 years ago
Mr. Moore read 25 pages of a book on Monday. He read 32 pages on Tuseday, 39 pages wenseday, and 46 pages on thursday. If this p
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