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WITCHER [35]
3 years ago
10

Please help me ASAP!!

Mathematics
1 answer:
Sati [7]3 years ago
3 0

The answer is D, i.e. the system was solved via elimination


If you multiply the first equation by 5, the system becomes


\left \{ {{-5x-10y=35} \atop {5x-6y=-3}} \right.


If you sum the two equations, you get


-16y = 32


And so if you substitute the second equation of system A with this new equation, you'll get system B.

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106 students are in chorus.

About 110/200 students are in chorus.

6 0
3 years ago
a manufacturer has 3375 yards of material on hand. if the average dress takes 3 3/8 yards of material, how many dresses can he m
shepuryov [24]
We know that

3 3/8-------------> (3*8+3)/8-----------> 27/8 yd

if 1 dress take---------------> 27/8 yd
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the answer is
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7 0
3 years ago
Answer this question please and thank you
jeka57 [31]

Step-by-step explanation:

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3 0
3 years ago
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Write an equation of the line perpendicular to the line 8x+15y=12 and containing the point (11,17) write the answer in standard
jek_recluse [69]

The slope of a line perpendicular to another line has a slope which is the negative reciprocal of that line or:

m1 = -1/m2

First, we convert the given equation into slope-intercept form of a line: y = mx + b

8x + 15y = 12

15y = -8x + 12

y = (-8/15) x + 0.8

m1 = -8 / 15

 

Therefore the slope of the perpendicular line is:

m2 = 15 / 8

 

Since the perpendicular line crosses the point (11, 17), therefore using the slope formula:

m = (y2 – y1) / (x2 – x1)

15 / 8 = (y2 – 17) / (x2 – 11)

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y2 = 1.875 x2 – 3.625

y = (15/8) x – 3.625

multiplying both sides by 8:

8y = 15x – 29

rewriting in standard form:

<span>15x – 8y = 29                (ANSWER)</span>

3 0
3 years ago
If i swam 86 meters and someone else swam 53 meters how much more did i swim
Elenna [48]

Answer:

33 meters.

Step-by-step explanation:

You're trying to find the difference between 86 and 53. To find that, you would do 86-53.

5 0
3 years ago
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