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Pepsi [2]
3 years ago
13

CAN SOMEONE PLEASE HELP ME

Mathematics
1 answer:
vaieri [72.5K]3 years ago
3 0

Answer:

Since sine is equal to opposite over hypotenuse, you would create the fraction 8/10. 8 and 10 are both divisible by 2, so that fraction would reduce to 4/5, which is the answer.

Step-by-step explanation:

hey can yall make me brainlyiest

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mart [117]
The answer to this is 169
6 0
3 years ago
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Explain what their first step would be if they wanted to eliminate the y variable from the equations.
Vinvika [58]

Answer:

  • r1 +4×r3 ⇒ r1
  • r2 -3×r3 ⇒ r2

Step-by-step explanation:

We note that the coefficient of y in equation (iii) is 1, so it is convenient to use that equation to eliminate y from the others.

__

<em>To eliminate the y-variable from equation (i), four times equation (iii) can be added to equation (i).</em>

<em>To eliminate the y-variable from equation (ii), three times equation (iii) can be subtracted from equation (i).</em>

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The result of these operations would be ...

  10x +6z = 28\quad\text{(iv)}\\\\-7x-9z=2\quad\text{(v)}

5 0
2 years ago
What expression has a negative value?<br>7+3(-4)(2)<br>-2[12/(-3)]<br>(15-7)-(9/3)<br>-5[7+(-14)]-30
Soloha48 [4]

Answer:

7+3(-4)(2)= -17

Step-by-step explanation:

7+3(-4)(2)

(-4)*2=-8

∴ 7+3(-8)= 7-24

= -17

8 0
3 years ago
Item 15 Your math class is collecting canned food for a local food drive. The goal is to collect at least 130 cans but no more t
Margarita [4]

For this case, the first thing we must do is define variables.

We have then:

n: number of cans that each student must bring

We know that:

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There are 20 students in the class

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Therefore the inequation of the problem is given by:

Answer:

105 <u><</u> 20n + 5 <u><</u> 205

the possible numbers n of cans that each student should bring in is:

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8 0
3 years ago
Solve by substitution. Show each step of your work.
zaharov [31]

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y = -5x + 15

Substituting y= -5x+15 from first equation into second equation:

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3x + 2·(-5x + 15) = 16

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7x = 30 - 16 = 14

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5x + y = 15

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10 + y = 15

y = 15 - 10

y = 5

So your final answers are x=2 and y=5.

3 0
2 years ago
Read 2 more answers
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