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3 years ago

Help! 3x10=(2x10)+(1x_)

Mathematics

1 answer:

motikmotik3 years ago

8 0

$3*10=(2*10)+(1*x) \\ \\ 30=20+x \\ \\ 10=x$

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Find the product.

Komok [63]

Always when multiplying a positive number by a negative number, the answer is negative. So C and D Are out.
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So, the Answer is A (-84)

Hope this Helps :)

6 0

4 years ago

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Which equation represents a proportional relationship between the x and y values?

Airida [17]

Answer:

D) $y=-2x$

Step-by-step explanation:

A linear relationship is of the form $y=mx+b$ , where, $m$ is the slope and $b$ is the y-intercept (constant).

For a proportional relationship, the value of $b=0$ and thus it is of the form $y=mx$

Let us check each option and express it in the form above.

Option A:

$y=2$

This can be written as $y=0x+2$ . So, $b\ne 0$ .

Since, b \ne 0, therefore, it is not a proportional relationship.

Option B:

$y=14x+1$

Here, $b=1$ . So, $b\ne 0$ .

Since, b \ne 0, therefore, it is not a proportional relationship.

Option C:

$y=x-4$

Here, $b=-4$ . So, $b\ne 0$ .

Since, b \ne 0, therefore, it is not a proportional relationship.

Option D:

$y=-2x$

This can be rewritten as $y=-2x+0$

There is no y-intercept on this. So, $b=0$

Since, $b = 0$ , therefore, it is a proportional relationship.

Therefore, the correct option is D.

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3 years ago

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Which of these references a velocity (not speed) more than one answer 50 mph

UNO [17]

Answer:b

Step-by-step explanation:

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3 years ago

Jonathan wants to the new baseball game for his game console. The game costs $45.99. If sales tax is 6%, write an equation to fi

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3 years ago

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KIM [24]

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8(-10x - 3y = -18)
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Multiply both of those all the way through to get new equations:
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Now the y's cancel each other out leaving only the x's:
-59x = -177 and x = 3. Now plug that 3 into either one of the original equations to find the y value. Either equation will work; you'll get the same answer using either one. Promise. -7(3) - 8y = 11 gives a y value of -4. so your solution is (3, -4) or B above.

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3 years ago

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