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vekshin1
3 years ago
14

Solve the quation.

Mathematics
1 answer:
jenyasd209 [6]3 years ago
4 0

x + 7/8 = 4

subtract 7/8 from each side

x = 4 - 7/8

borrow from the 4

x =3 8/8 - 7/8

x = 3 1/8

Choice C

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Is 4x positive or negative?
Nikolay [14]

Answer:

if x is positive, the answer is positive. If x is negative, the answer is negative.

7 0
3 years ago
Solve the system of equations using the substitution method. y=2+1/4x,
skelet666 [1.2K]

Answer: (4,3)


Step-by-step explanation:

1. In this method you must solve one of the equation for one of the variables and substitute it into the other equation to find the other variable. Then, substitute the value of that variable into one of the original equation to obtain the value of the other one.

2 You have that:

y=2+1/4x

3. Then, you can substitute it into the other equation and solve for x:

3x-5(2+1/4x)=-3\\3x-10-5/4x=-3\\7/4x=7\\x=4

4. Now you can obtain y:

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5. The answer is:

(4,3)



6 0
3 years ago
Help and explain thanks!
katen-ka-za [31]

Answer:

120 cm

Step-by-step explanation:

One way to tackle this is by getting another sheet of paper and drawing it out, then counting up the total of the sides. If you draw it, you can see that you're dealing with a rectangle; two sides of length 12 and two sides of length 8. If you don't like drawing or don't want to in this case, another way to get the answer is by knowing one vertex is at (0, 0), so the next vertex (0, 8), would create a side that's exactly 8 units long. Kind of the same, you know from (0, 0), you also have a point (12, 0), so drawing that would create a side that's 12 units long. All in all, to get the perimeter in units, you have 12 + 12 + 8 + 8 = 40.

The problem says it wants the amount of wood in centimeters needed for the perimeter. What we just found was the perimeter in generic units, so if the problem says every "grid square", or unit, is 3 centimeters long, then all you have to do is take our result 40 and multiply it by 3 to get the number of centimeters. Your perimeter in centimeters would be 120 cm.

7 0
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Answer:

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Step-by-step explanation:

The equation of a line in slope- intercept form is

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Here m = - 5 and b = 7, thus

y = - 5x + 7 ← equation of line

3 0
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The first one is -30 seconds
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