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Fudgin [204]
3 years ago
9

Which shape cannot be a rectangle?

Mathematics
1 answer:
kondaur [170]3 years ago
3 0
Pentagon since it has 5 sides 
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Pls help I need a good grade asap
Kipish [7]

Answer:

8n+12=36, triplets are 8 years old

Step-by-step explanation:

total age is 36

one of them is 12 years old so -> 36-12 = 24

three triplets so 24/3 = 8

there are three 8 years olds and one 12 year old. n = 3

7 0
3 years ago
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You are making 10 tons of concrete that is 37.9% cement by mixing a 25% cement mixture with a 68% cement mixture.
Mnenie [13.5K]
The 10 tons should have 37.9% cement.

Let the 25% mixture be x tons

Then the 68% mixture will be (10 -x) tons.

Using formula for mixtures:
Let p for percentage and w for weight in tons.

p₁w₁ + p₂w₂ = pw

25*x + 68*(10-x) = 37.9*10

25x + 680 - 68x = 379

680 - 43x = 379

680 - 379 = 43x

301 = 43x

43x = 301

x = 301/43

x = 7

Recall that x, was for the 25% mixture, 7 tons.

a) For the 68% mixture, = 10 - x = 10 -7 = 3 tons.

b) For the 25% mixture = x = 7 tons.  
6 0
3 years ago
A fair had been running in the town of Ajax for 2 years. The first year 15,754 people attended. The second year, 17,934 people a
lawyer [7]

Answer:

25,000 trust me I got this right

Step-by-step explanation:

4 0
3 years ago
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If Michelle is to celebrate her birthday next week, what is the chance that she will celebrate it in Wednesday​
Ivan

Answer: 1/7

Step-by-step explanation: Seven possibilities and one outcome so it is 1/7

6 0
3 years ago
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Solve for x: 1/2 (10x+6)=-2x+10
pickupchik [31]

Answer: x = 1

Step-by-step explanation:

substitute 1 for x

1/2(10(1)+6) = -2(1)+10

1/2(10+6) = -2+10

5+3 = -2+10

8=8

8 0
2 years ago
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