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den301095 [7]
3 years ago
5

Look at the screenshot please for question! Answer choices: 18 20 21 25

Mathematics
1 answer:
katen-ka-za [31]3 years ago
5 0

Answer:

The Answer is 18 then 25 then 21 then 20

Step-by-step explanation:

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Virty [35]

Answer:

B.6

Step-by-step explanation:

When we add and subtract, we do it from left to right

13+ (-12) - (-5)

13+-12

13-12 = 1

1 - -5

A negative negative is a positive

1 +5

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3 years ago
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Mike, Luke, and Alex each own a white hat marked with the first letter of their name. Winter owns a plain red hat, which is not
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Answer:switch mikes Luke’s and Alex in between each other and let winter keep her own

Step-by-step explanation:

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2 years ago
If (x, y) = (3, 4) is a solution of the simultaneous equations.
Vinvika [58]
The first thing you want to do is plug in x and y into both equations:

a(3) + b(4) = 4

b(3) + a(4) = 8

rearrange to line up a’s and b’s

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4a + 3b = 8

now you want to choose a or b and multiply each equation by a number to make them have the same amount of a’s or b’s.

4(3a + 4b = 4) = 12a + 16b = 16

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Now we subtract the bottom equation from the top and solve for b:

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7b = -8

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Now we plug back in for b to one of the original equations:

3a + 4(-8/7) = 4

3a + (-32/7) = 4

3a - (32/7) = 4

3a = 4 + (32/7)

3a = (28/7) + (32/7)

3a = 60/7

a = (60/7)/3 = 20/7.


Finally, plug a and b in together to double check using the second equation.

4a + 3b = 8

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4 0
3 years ago
Hey could you please help me and my new friend found out this answer?
Ludmilka [50]

Answer:

i will be you friend and help you but where the question

Step-by-step explanation:

8 0
3 years ago
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Sally, Sue and Sara are friends. Sue's age is twice Sally's age. Sara is 1 year younger than Sue. The
sergiy2304 [10]
Sue = 2 Sally
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3 years ago
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