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Blizzard [7]
2 years ago
13

Someone help and please make sure it’s right :)

Mathematics
1 answer:
pashok25 [27]2 years ago
4 0

Answer:

9

Step-by-step explanation:

11x  + 1 + 7x + 17 = 180   \:  \:  \:   \: 18x + 18 = 180 \:  \:  \:  \:  \:  \:  \: 18x = 180 - 18 \:  \:  \:  \:  \:  \:  \:  \:18x = 162 \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 162 \div 18 = 9

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2 years ago
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Determine which of the following equations, when graphed, intersect at the point (4, 0).
dexar [7]

Answer:

x - y = 4

x + y = 4

Step-by-step explanation:

Substitute x=4 and y=0 in every equation. If both sides of the equal sign are equal, (LS=RS, left side equals right side) then the graph intersects at (4,0).

- x - y = 4

- (4) - 0 = 4

-4 = 4

LS≠RS

x - y = 4

4 - 0 = 4

4 = 4

LS=RS

2 x + y = 7

2(4) + 0 = 7

8 = 7

LS≠RS

2 x + y = -7

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LS≠RS

x + y = 4

4 + 0 = 4

4 = 4

LS=RS

2 x - y = 7

2(4) - 0 = 7

8 - 0 = 7

8 = 7

LS≠RS

Only x - y = 4  and x + y = 4  intersect at (4, 0).

4 0
3 years ago
A kayaker needs to paddle north across a 100-m-wide harbor. the tide is going out, creating a tidal current that flows to the ea
Scilla [17]
The velocity or speed of the kayaker going north at a speed of 3 m/s and that of the current going east at a speed of 2 m/s create a resultant speed of √13 m/s. The new distance that has to be traveled by the kayaker in order to move 100 m north is calculated through the equation,
                            3 / √13 = 100 / x 
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                                 t = 120 / √13 = 33.33 s
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3 years ago
Please answer number 69 <br> ASAP
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45 Degrees Celsius :)))))

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3 years ago
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Five years ago, Ruth made a deposit of $500 into a savings account that pays simple interest. She made no further deposits, and
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The answer would be $50 per year.

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