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djverab [1.8K]
3 years ago
6

Working as a team 8 mathletes can solve 20 problems in ten minutes. At this same rate how many mathletes are needed in order to

solve 30 problems in 5 minutes
Mathematics
2 answers:
emmainna [20.7K]3 years ago
8 0
7 is the right answer(please rate 5.0 stars so i can help other people out thanks)
Alekssandra [29.7K]3 years ago
8 0

Answer:

24

Step-by-step explanation:

Divide probs and mins by 2 and you get --> 8, 10, 5 respectively

now 30 probs and 5 mins so multiply probs and mathletes each by three getting --> 24, 30, and 5

thus, you have your answer of 24

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The answer is 16!!!!!! If you need me to explain I shall
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3 years ago
Solve the simultaneous equations
riadik2000 [5.3K]

Answer:

x = -2, y = 3

Step-by-step explanation:

2x + 3y = 5

5x - 2y = -16

In order to find the value of a variable, we must eliminate the other variable by multiplying the equations to get the same coefficient.

We can multiply the first equation by 5 and the second one by 2 to get the same coefficient for x, the equations then become:

10x + 15y = 25

10x - 4y = -32

Now we can subtract:

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3 0
2 years ago
Help ! Aanswer ! Read the direction and answer with proof ! I'll give brainliest to whose right.​
dolphi86 [110]

Answer:

x > 14 ; x < 12

Step-by-step explanation:

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Area < 138, so that means 3*(4x-2) < 138, so x < 12

3 0
2 years ago
Find the sum: -11 + (-8)
Kipish [7]

Answer:

-19

Step-by-step explanation:

-11+(-8)

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hole this is correct

3 0
2 years ago
. Sara teaches aerobics classes as a part-time job. The amount of money she earned is shown in the table below. Based on the inf
nikitadnepr [17]

Answer:

She should earn 225 dollars.

Step-by-step explanation:

I know this because 50 ÷ 4 = 12.5 and 12.5 × 18 = 225.

3 0
2 years ago
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