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ElenaW [278]
3 years ago
15

Solve for x 2x+5=17 plzhelp

Mathematics
2 answers:
yaroslaw [1]3 years ago
7 0

Answer:

x=6

Step-by-step explanation:

2x+5=17

Subtract 5 from both sides;

2x+5-5=17-5

Simplify

2x=12

Divide both sides by 2;

2x/2=12/2

Simplify;

x=6

Hope this Helped!!!

nikklg [1K]3 years ago
4 0

x = 6

you have to work out the problem and what ever you do to one side, you do to the other

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Determine between which consecutive integers the real zeros of f(x) = 2x - 5x+1 are located.
LuckyWell [14K]

Answer:

between 0&1 and 2&3

Step-by-step explanation:

(Assuming that f(x) = 2x^2 - 5x + 1)

To solve this question we just need to find the zeros of the function f(x), and we do that by making f(x) = 0 and finding the values of x:

2x^2 - 5x + 1 = 0

Now we can use Bhaskara's formula:

Delta = b^2 - 4ac = 25 - 4*2 = 17

sqrt(Delta) = 4.12

x1 = (5 + 4.12) / 4 = 2.28

x2 = (5 - 4.12) / 4 = 0.22

the zero x1 = 2.28 is between 2 and 3, and the zero x2 = 0.22 is between 0 and 1, so the answer is 'between 0&1 and 2&3'

As the options A, B, C and D are not clear in the question text, you can just mark the option that has this result.

3 0
3 years ago
For the function, f(x) = -2x 2, find f(-3).<br><br> 36<br> 18<br> -18<br> -36
VARVARA [1.3K]

\pink{ \boxed{\boxed{\begin{array}{cc} \maltese  \bf \: given \\  \\  \rm \: f(x) =  - 2 {x}^{2}  \\  \\  \rm \therefore \: f( - 3) =  - 2 {( - 3)}^{2} \\  \rm =  - 2 \times 9 \\  =  - 18  \end{array}}}}

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3 years ago
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Answer:

5 kdkdjdnndndjdjdjdjd

6 0
3 years ago
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Can someone help me answer a few of these? Thank you! :)
sesenic [268]
I’m going to try to answer these to the best of my ability.

1. Plane D
2. Plane C
3. AB
4. No
5. I don’t believe so because it doesn’t look like C is on the same plane as a AB and D.
6. I think so, yes! Collinear means that they are on the same line, and it looks like if you put a line between those two to connect them, they would connect perfectly!
7. B possibly? Because it looks like B, C, and D are all collinear and that they would pass through a straight line. A doesn’t look like it’s collinear with the rest of them.
8. No
9. Yes
10. Yes

I’m sorry if any of those are wrong, but I did make sure to try and put some explanations for some of them so you saw why I gave the answer that I gave! I hope that helped and like I said, I’m sorry if any of them are wrong, I tried my best!
4 0
3 years ago
?/8 = 3/?<br> I am missing 2 numbers for a equivalent fraction problem it is a bit complicated.
lyudmila [28]
?/8 = 3/?
Multiplying both sides by 8, then “?” gives

8? * ?/8 = 8? * 3/?
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The number, then, is sqrt(24), or 2 sqrt(6), which is approximately 4.90.
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