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Zepler [3.9K]
3 years ago
9

4.2(5.1x+6.8) Simplify the expression

Mathematics
1 answer:
vovikov84 [41]3 years ago
6 0

Answer:

21.42x+28.56

Step-by-step explanation:

Expand: 4.2×5.1×x+4.2×6.8

4.2×5.1×x  to (21.42)x

Simplify: 21.42x+4.2×6.8

4.2×6.8 = 28.5628.56

21.42x+28.56

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Equation parallel to y = 3x + 2 and passing through (1, 1)
Kisachek [45]

Answer:

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Step-by-step explanation:

The equation of a line in slope- intercept form is

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y = 3x + 2 ← is in slope- intercept form

with slope m = 3

Parallel lines have equal slopes, then

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To find c substitute (1, 1) into the partial equation

1 = 3 + c ⇒ c = 1 - 3 = - 2

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3 years ago
Simplify 3a + 2b - 8a + b
Harlamova29_29 [7]

To simplify 3a + 2b - 8a + b, we need to combine like terms. Like terms are terms that share common variables. In this expression, the two variables are terms with a and terms with b. The terms that have a are 3a and -8a. The terms that have b are 2b and b. Now we can separate them and simplify.

(3a - 8a) + (2b + b)

-5a + 3b

6 0
3 years ago
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The endpoints of a line segment graphed on the coordinate system are (−7, 3) and (2, 5). What is the range of the graph?
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I think the answer would be C
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I need help ASAP!!!!
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Step-by-step explanation:

Kindly find 4 attached files

The proportionality is determined by the lines that only passes through the origin

And all the lines drawn are passing through the origin

So by either one of the 2 ways

By using rule of direct variation y=kx that has no y intercept

Or by finding the equation of straight line and find the slope with neglecting the y intercept since it's 0

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