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ad-work [718]
3 years ago
13

I dont understand.. Could someone help?​

Mathematics
1 answer:
bija089 [108]3 years ago
4 0

Answer: a) -6, b) -10, c) -3, d) -98, e) -6, f) 49, g) -3.75 h) -12

Step-by-step explanation: For equations like these, you need to solve to get the variables on their own. For problem a, add 5 to -23 (because 5 is negative, you add to cancel it out to 0) which gives us 3x = -18. Lastly, divide the whole equation by 3 to cancel 3 out so that x is alone: 3x/3 = -18/3. This gives us x = -6 (x is negative 6, not positive because a negative divided by a positive is ALWAYS negative).

Given equations like problem d, in order to get x alone, you need to use the opposite of division to make the problem solveable. In this case, multiply -7(denominator) on BOTH sides of the equation to balance it: (-7)x/-7 + (-7)(-3) = (-7)11. Now, we get x + 21 = -77. Then subtract 21 to -77: x = -98 (it isn't -56 because subtracting a positive and a negative means adding them).

TIP: to make sure your answer is correct, plug in the answers you got into the equation. For a, the answer was -6. 3(-6) -5 = -23. -23 = -23. This is a true statement, so the answer is correct.

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HELP PLEASE SOMEONE
Rom4ik [11]
f(x)= \frac{x}{2} -2 and g(x)=2 x^{2} +x-3
(f+g)(x) = \frac{x}{2} -2+2 x^{2} +x-3
combining like terms gives you answer choice B

8 0
2 years ago
Suppose that Y varies directly with X andY equals 12 when X equals -2 what is X when Y equals -6
VLD [36.1K]

Answer:

x=1

Step-by-step explanation:

A direct variation equation has the following format:

y=kx

Where k is a constant.

We know that y is 12 when x is -2. Thus, substitute:

12=-2k

Divide both sides by -2:

k=-6

So, our direct variation equations is:

y=-6x

To find what x is when y equals -6, substitute in -6 for y:

-6=-6x

Divide both sides by -6:

x=1

So, our answer is 1 :)

4 0
3 years ago
A housepainter mixed 2 gallons of blue paint with
maria [59]

Answer:

Option D: 6:12 is correct answer.

Step-by-step explanation:

We can find the simplest form of ratio to compare it with the given ratios.

According to given statement,

The ratio is:

No.\ of\ Blue\ Paint\ Gallons: No.\ of\ red\ paint\ gallons\\2:4\\Simplifying\\1:2

Now we will check if the given options can be simplified to 1:2

So,

Option A:

8:12\\2:3

Option B:

8:24\\1:3

Option C:

3:5

Option D:

6:12\\1:2

As we can see that 6:12 can be simplified to 1:2 which is same as 2:4 so it will make the same shade of purple.

Hence,

Option D: 6:12 is correct answer.

8 0
3 years ago
A flower shop ordered a shipment of red, blue, and white flowers. The ratio of red: blue: white flowers in the shipment is 3: 1:
Georgia [21]

Answer: A

Step-by-step explanation: this is to easy

8 0
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Answer:

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2 years ago
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