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3 years ago

Please help me answer this

Mathematics

2 answers:

lilavasa [31]3 years ago

8 0

The 3rd graph because the slope is positive (you can easily see this because all x values are less than the corresponding y values). It is not the 2nd or 4th one because there are no 0 values for either x or y. (all x or y would have to be 0 for those graphs to be correct.)

defon3 years ago

6 0

Answer:

It looks like the third one, C

Step-by-step explanation:

Every time c increases by 1, d increases by 2

That means the slope will be 1/2

That means the slope is positive

Which means that there can only be one answer, C

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Please use elimination method to solve

vagabundo [1.1K]

The answer is x = 4, y = -1 or (4, -1).

We are given :

2x + 7y = 1
3x + 4y = 8

Multiply the 1st equation with 3 and 2nd equation with 2.

3. 3(2x + 7y) = 3(1) ⇒ 6x + 21y = 3

4. 2(3x + 4y) = 2(8) ⇒ 6x + 8y = 16

Now, subtract : Equation 3 - Equation 4.

6x + 21y - 6x - 8y = 3 - 16
13y = -13
y = -1

Substitute in the 1st equation.

3x + 4(-1) = 8
3x - 4 = 8
3x = 12
x = 4

7 0

2 years ago

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Nineteen less than 6 times a number is the same as 16 more than the number. The equation is The solution is x -7 7.

Crank

Answer:

The number is 7

Step-by-step explanation:

let the said number be x

Nineteeen less than 6 times a number;

6x - 19

equals; 16 more than the number; this is 16 + x

Thus;

6x - 19 = 16 + x

6x-x = 16 + 19

5x = 35

x = 35/5

x = 7

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3 years ago

What is the height of the building

Mrac [35]

I think the answer is 180m

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4 years ago

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Write 57% as a ratio

Feliz [49]

It’d be 0.57, hope this helps.

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3 years ago

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4-8(-2-6t) if t = -1

oee [108]

Answer:

-16

Step-by-step explanation:

4-8= -4 (-2-6t) if t=-1 instead of t besides 6 put -1 multiplier it which it will become positive.

-4(-2+6)

-4x-2=8, -4x6= -24

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trust me i know that i am right

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4 years ago