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nadezda [96]
3 years ago
8

Please helppppp!! My friend and I have tried no luck....

Mathematics
1 answer:
miv72 [106K]3 years ago
6 0
F(x) = 3x -1
g(x) = x+2
so
(f+g)(x) = 3x -1 + x+2
(f+g)(x) = 4x + 1

answer is C. 4x + 1
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A walking path across a park is represented by the equation y= -4x - 6 . A new path will be built perpendicular to this path. Th
frosja888 [35]

Answer:

y=1/4 x +11

Step-by-step explanation:

So this is a word problem but it isn't too bad to figure what they want:  They are looking for a line that is perpendicular to y=-4x-6 and goes through (-4,10).

So we are looking for an equation whose slope is the opposite reciprocal of the given equation's slope.

The given equation has a slope of -4

The opposite reciprocal of -4 is 1/4 so that is the slope of our new line.

So we know our equation is in the form of y=1/4 x+b

Now we are given that this line should go through (-4,10) so plug it in to find b.

10=1/4 * (-4)+b

10=-1+b

11=b

So the equation is y=1/4 x+11

3 0
3 years ago
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How is this number expressed in scientific notation?
xenn [34]

Answer:

5×10^9

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the  10 . If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

5×10^9

<em>Finito </em>:D

5 0
3 years ago
Two sides of an obtuse triangle measure 9 inches and 14 inches. The length of longest side is unknown. What is the smallest poss
julia-pushkina [17]

Answer:

17 inches

Step-by-step explanation:

An obtuse triangle is the triangle in which one of the side is the longest. It contains an obtuse angle and the longest side is the side that is opposite to the vertex of the obtuse angle.

Let the three sides of the obtuse triangle be a, b and c respectively with c as the longest side. Let a = 9 inches and b = 14 inches.

Now we know that for an obtuse triangle,

$c^2 > a^2 +b^2$

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$c^2 > 81 +196$

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Therefore the smallest possible whole number is 17 inches.

4 0
3 years ago
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A wireless phone plan cost Eric $35 for a month of service during which he sent 450 text messages. If he was charged an fixed fe
Lelechka [254]

Answer:

$.05 per message

Step-by-step explanation:

450m + 12.5 = 35

450m = 35-12.5

450m = 22.5           divide both sides by 450

m=22.5/450

m=.05

3 0
3 years ago
40 points PLEASE HURRY!!!
melamori03 [73]

Answer:

A. 18 divided by 2/9

Step-by-step explanation:

To determine the number of boos that will fit into a box that is 18 inches long, we divide the length of the box by the length of the books

18 inches  divided by 2/9 inches per book

This tells us how many books

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18 * 9/2

81 books

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4 years ago
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