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kondor19780726 [428]

4 years ago

14

How to do ratio equivalents

1 answer:

Oksi-84 [34.3K]4 years ago

3 0

Equivalent Ratios. Students learn to find equal ratios by first writing the given ratio as a fraction, then multiplying the numerator and denominator of the fraction by the same number. For example, to find two ratios that are equal to 1:7, first write 1:7 as the fraction 1/7. I hope this helps

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The table shows the results of a survey in which 10th-grade students were asked how many siblings (brothers and/or sisters) they

lesantik [10]

Answer:

<em>70%</em>

<em></em>

Step-by-step explanation:

Given

Number of Siblings: || 0 || 1 || 2 || 3

Number of Students: || 4 || 18 || 10 || 8

Required

Determine the probability of a student having at least one but not more than 2 siblings

First, we have to determine the total number of 10th grade students

$Total = 4 + 18 + 10 + 8$

$Total = 40$

The probability of a student having at least one but not more than 2 siblings = P(1) + P(2)

Solving for P(1)

P(1) = number of students with 1 sibling / total number of students

From the given parameters, we have that:

Number of students with 1 sibling = 18

So:

$P(1) = \frac{18}{40}$

Solving for P(2)

P(2) = number of students with 2 siblings / total number of students

From the given parameters, we have that:

Number of students with 2 siblings = 10

So:

$P(2) = \frac{10}{40}$

$P(1) + P(2) = \frac{18}{40} + \frac{10}{40}$

Take LCM

$P(1) + P(2) = \frac{18 + 10}{40}$

$P(1) + P(2) = \frac{28}{40}$

Divide numerator and denominator by 4

$P(1) + P(2) = \frac{7}{10}$

$P(1) + P(2) = 0.7$

Convert to percentage

$P(1) + P(2) = 70\%$

<em>Hence, the required probability is 70%</em>

6 0

3 years ago

Three of four numbers have a sum of 22. If the average of the four numbers is 8, what is the fourth number ?

KatRina [158]

X+y+z=22

(x+y+z+t)/4=8
subsitute
x+y+z=22
(22+t)/4=8
multiplly by 4
22+t=32
subtract 22
t=10

the fourth number is 10

3 0

3 years ago

Use mental math to solve 4576 + 2842

allsm [11]

The answer is 7418.

Hope this helps

6 0

4 years ago

Read 2 more answers

Arrange the following numbers in ascending order. (a) 5812214,

Oduvanchick [21]

Answer:

1, 1, 2, 2, 4, 5, 8

Step-by-step explanation:

Hope this helps :)

Maybe brainliest?

8 0

3 years ago

c) In the figure alongside, PQ = PR, PS QR, write down therelation between QS and SR, and angleQPS and angleRPS.

bazaltina [42]

Answer:

QS=SR ( being PS median of triangle PQR,psㅗQR)

<QPS=<SPR (Median PS bisects the angle P)

HOPE THIS WILL HELP YOU...!

4 0

3 years ago