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daser333 [38]
3 years ago
7

√21 + √13 + √7 + √4 =

Mathematics
1 answer:
koban [17]3 years ago
4 0
13.4796295925
(calculator used)
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I need help with this problem and would really appreiciate a short explanation too.<br> 15 PTS
inysia [295]

okay. the point has an x and y value. place them into the equation.

1=m(1)+b

m=slope, and theequation tells you that slope is 7.

1=7(1)+b

now you need to figure out what b is.

1=7(1)+b

^

1= 7 +b

-7 -7

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-6=B

b is 6. now place it into the equation, replacing the x and y values back.

y=7x-6.

write 7 and 6 in the boxes (the negative for the six has already been provided)

8 0
3 years ago
That copy machine is quick! It copied 90 pages in 3 minutes. How many copies can it make in 1 minute?
earnstyle [38]

Answer:

30 copies.

Step-by-step explanation:

Let's represent p as pages and c as copies

90p = 3 m

m = 90/3

m = 30

7 0
2 years ago
Read 2 more answers
Ben earns a salary of $120 a week plus $25 for each table he sells at
gtnhenbr [62]

Answer:

add 25 each time and count how many times you add it on

Step-by-step explanation:

and that will be your answer

7 0
2 years ago
How many hours is 8:30 to 12:45?
elena55 [62]
Hi there!

8:30 to 12:45 is four hours and 15 minutes. You could easily count this but if you're having trouble you could also use a clock. :P

Hope this helps!
4 0
3 years ago
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Evaluate the expression, if x=4, y=9, and z=7. <br> x(y + z - 3 squared)
atroni [7]
4(9+7-9)
the nines cancel
4*7 =28
3 0
3 years ago
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