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Nata [24]
3 years ago
12

If the following ratios are proportional, what is the missing quantity? 10.2/3 ; 17/5; _____/11; 57.8/17

Mathematics
1 answer:
alukav5142 [94]3 years ago
7 0

Answer:

  • 37.4

Step-by-step explanation:

<u>Use one of ratios to find the missing quantity:</u>

  • 17/5 = x/11

<u>Cross-multiply:</u>

  • 5x = 17*11
  • x = 17*11/5
  • x = 37.4
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Elodia [21]

Answer:

r - 5 = 2c

r = 75

Step-by-step explanation:

To write an equation for the problem, we first need do declare the value of the number of apps cora has.

Let c = Cora's apps

r - 5 = 2c

r - 5 is used to indicate that Rita deleted 5 apps.

2c is used to represent the twice the number of apps Cora has.

Now you said that Cora had 35 apps.

Let's plug that into the equation.

r - 5 = 2c

r - 5 = 2(35)

r - 5 = 70

Now we transpose the -5 to the other side to leave r.

r = 70 + 5

r = 75

So if Cora has 35 apps, then Rita will have 75 apps.

3 0
3 years ago
What is the length of the unknown side?
777dan777 [17]

Answer:

Hi there!

The correct answer is: 20

Step-by-step explanation:

knowing this a right triangle you can solve this problem in two ways

Method One: Pythagorean Theorem

a^2 + b^2 = c^2 then plug in the values

(12)^2 + (16)^2 = c^2 this will come out to be 400 = c^2

square root both sides and you get c = 20

Method Two: Pythagorean Identities

if you ever learned the Pythagorean identity 3,4,5

this triangle is indeed a 3,4,5 triangle it's just that each side is multiplied by the factor 4

so in this case since you know the missing side should be 5 you just multiply 5 by 4 and you get 20

 

4 0
3 years ago
A jar contains only​ pennies, nickels,​ dimes, and quarters. There are 16 ​pennies, 18 ​dimes, and 28 quarters. The rest of the
tatyana61 [14]

Answer:

I hope this helps you

Step-by-step explanation:

84-16=68

68-18=50

50-28=22

n=22

equation:84-(16+18+28)

6 0
2 years ago
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Semmy [17]

Answer: it increased by $403. He ended with $6603

Step-by-step explanation: since he started off with $6200, you would move the decimal over two places (.065) and then multiply 6200 and .065 to get $403.

5 0
2 years ago
Please help me with the question ​
Alecsey [184]
1.4
1 = 100
1.4 = 140
Solution: 140%
7 0
2 years ago
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