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Ivenika [448]
3 years ago
15

20 = 8 + 3 ( 12 + 4x ) A. 4 B. -4 C. -2 D. 2

Mathematics
2 answers:
Ulleksa [173]3 years ago
8 0

Answer:

C. would be the correct answer

Step-by-step explanation:

C. -2

Pani-rosa [81]3 years ago
6 0

Answer:

C

Step-by-step explanation:

expand.. and make the x as the subject

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Find the consecutive positive odd integers whose product is 99​
dezoksy [38]

Answer:

9 and 11

Step-by-step explanation:

So let's say that the first integer is x.

That means that the second integer is x+2, since it us the next odd number.

This problem can be easily solved with our mind the answer is 9 and 11, but I'll show you the steps to slove this.

We make an equation using these two numbers:

(x)*(x+2)=99\\

Now all we gotta do is solve for x:

x^2 +2x = 99\\x^2+2x-99=0

Now we use either splitting the middle term or quadratic formula:

x^2+11x-9x+99=0\\x(x+11)-9(x+11)=0\\(x+11)(x-9)=0

Now we split each terma and solve for x:

(x-9)=0\\x=9\\(x+11)=0\\x=-11

Now the question states <em>positive </em>so we can rule out x = -11.

Now we have the first integer x = 9,

the second integer is x+2 = 9+2 =11

So the two consecutive positive odd integers are 9 and 11

4 0
3 years ago
Which will be the effect on the vertex of the parabola y = 4x2 + 1, if the equation is changed to y = -4x2 + 1?
Vlad1618 [11]
The Gradient would be negative therefore making it start by going down then up, making a sad mouth. the x intercepts will be the same. Frankly it just flipped upside down. I remember it like if the gradient is positive then happy smile, if its negative then sad smile. Hope I helped.
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At most, Sybil types 56 words per minute. Which inequality represents this situation?
ki77a [65]
At most she types 56 words per minute.....so she types 56 words or less

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5 0
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Hi there!

-10-2 is equal to -12, not -8. This changes everything.

The fraction would be -12/16, which simplifies to -3/4.

I hope this helps!

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Step-by-step explanation:

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