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Naddik [55]
3 years ago
13

3. John and Nelly are cleaning their house. Nelly takes 3 hours longer than John if she cleans the house alone. If they can do t

he cleaning together in 2 hours, how long can John clean all by himself?​
Mathematics
1 answer:
swat323 years ago
8 0

Answer:

1 hour?

Step-by-step explanation:

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Could 16,30,31 be the side lengths of a right triangle? Explain why?
Vlad [161]

Answer:

No

Step-by-step explanation:

Using the converse of Pythagoras' identity

If the longest side squared is equal to the sum of the squares of the other 2 sides then the triangle is right.

31² = 961

16² + 30² = 256 + 900 = 1156

Since 961 ≠ 1156 then the sides do not form a right triangle.

4 0
4 years ago
Solve 5(x + 3) = 3x - 4<br>Show clear algebraic working,​
muminat

Answer:

5(x + 3) = 3x - 4

=> (5 * x ) + (5 * 3) = 3x - 4

=> 5x + 15 = 3x - 4

=> 5x = 3x - 4 - 15

=> 5x - 3x = -4 - 15

=> 2x = -19

=> x = -19/2

=> x = -9.5

If my answer helped, kindly mark me as the brainliest!

Thank You!!

6 0
4 years ago
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The domain of y=log(9-x^2),xER, is
jasenka [17]

Step-by-step explanation:

log(z) is defined when z > 0.

For log(9 - x²) to be defined, we have 9 - x² > 0.

=> x² < 9, -3 < x < 3.

The domain of y = log(9 - x²) is (-3,3).

3 0
3 years ago
Plz help thanks . uh idk what to write but it’s making me write
nadya68 [22]

Answer:

A, 4, -1

It's reflected over the y-axis, so it goes to the right side.

4 0
3 years ago
Read 2 more answers
NEED HELP PLEASE I BEG OF YOU
SVEN [57.7K]

Answer:

should be 40, because the top line is 40 and the line on the side is the same length

Step-by-step explanation:

5 0
3 years ago
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