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antoniya [11.8K]
3 years ago
13

Simplify. Rewrite the expression in the form 4n. 49​

Mathematics
2 answers:
Slav-nsk [51]3 years ago
8 0

Answer:11^3

Step-by-step explanation:

babunello [35]3 years ago
7 0

Answer:

easy bro 4/49

Step-by-step explanation:

that is the lowest it can go :)

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When Mei does 17 push-ups and 6 sit-ups, it takes a total of 35 seconds. In comparison, she needs 41 seconds to do 20 push-ups a
Romashka [77]

Answer:

It takes 1 seconds for push-ups and 3 seconds for sit-ups for Mei to do exercise.

Step-by-step explanation:

Given:

Let the time taken for push-ups be 'x'.

Let the time taken for sit-ups be 'y'.

Now Given:

17 push-ups and 6 sit-ups, it takes a total of 35 seconds.

So we can say that;

17x+6y=35 \ \ \ \ equation \ 1

Also Given:

41 seconds to do 20 push-ups and 7 sit-ups.

so we can say that;

20x+7y=41 \ \ \ \ equation \ 2

Now Multiplying equation 1 by 7 we get;

7(17x+6y)=35\times7\\\\119x+42y= 245 \ \ \ \ equation \ 3

Now Multiplying equation 2 by 6 we get;

6(20x+7y)=41\times6\\\\120x+42y = 246 \ \ \ \ equation\ 4

Now Subtracting equation 3 from equation 4 we get;

120x+42y-(119x+42y)=246-245\\\\120x+42y-119x-42y=1\\\\x=1\ sec

Now substituting the value of x in equation 1 we get;

17x+6y=35\\\\17\times1+6y=35\\\\17+6y=35\\\\6y=35-17\\\\6y= 18\\\\y=\frac{18}6 = 3\ seconds

Hence It takes 1 seconds for push-ups and 3 seconds for sit-ups for Mei to do exercise.

7 0
3 years ago
What is x^2+3x-28 factored
kap26 [50]

Answer: x^(2)-3x-28=0

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Thank you, I will reward the braniest​
snow_lady [41]

Answer:

0.5 miles per hour

Step-by-step explanation:

it going up by  0.5

3 0
3 years ago
System of equation x 3y=9 y=x-1
olga2289 [7]
<span>x + 3y = 9
-x + y = -1
X = 3
Y = 2

</span>
8 0
3 years ago
7 <br><br><br>Find the value of the expression. Z + 2y for y = 6 and z = 1​
Volgvan

Answer:

13

Step-by-step explanation:

1+2×6=13

boy!!!!!!!!!!!!!!

8 0
3 years ago
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