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notsponge [240]
3 years ago
6

Evaluate 2x + 5 - 10 when x = 12

Mathematics
2 answers:
musickatia [10]3 years ago
8 0

Answer:

19

Step-by-step explanation:

Naddika [18.5K]3 years ago
4 0
The answer is 19=
2 (12)+5-10= 24+5-10=19
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How to round to nearest hundredth
loris [4]

Answer:

just look at the decimal after the decimal number is the tenths place the hundreds place and so on if i have to round 567.1092 i would round the nine up to make the zero a one so my rounded answer would be 567.11

Step-by-step explanation:

4 0
2 years ago
What are the roots of the polynomial equation x3-7x=6x-12?
Ilia_Sergeevich [38]
This is not a polynomial equation unless one of those is squared.  As it stands x=-.833.  If you can tell me which is squared I can help solve the polynomial.

Ok, that is usually notated as x^3 to be clear.   I'll solve it now.

x^3-13x-12=0

Then use factor theorum to solve x^3-13x-12/x+1 =0
So you get one solution of x+1=0
x=-1

Then you have x^2-x-12 now you complete the square.

Take half of the x-term coefficient and square it. Add this value to both sides. In this example we have:

The x-term coefficient = −1

The half of the x-term coefficient = −1/2

After squaring we have (−1/2)2=1/4

When we add 1/4 to both sides we have:

x2−x+1/4=12+1/4

STEP 3: Simplify right side

x2−x+1/4=49/4

STEP 4: Write the perfect square on the left.

<span>(x−1/2)2=<span>49/4
</span></span>

STEP 5: Take the square root of both sides.

x−1/2=±√49/4

STEP 6: Solve for x.

<span>x=1/2±</span>√49/4

that is,

<span>x1=−3</span>

<span>x2=4</span>

<span>and the one from before </span>

<span>x=-1</span>

7 0
3 years ago
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Question 6 of 25<br> What is sin 45°?
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Answer:

B.

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What is the value of the 6 in 861
NISA [10]

Answer:

tens-or 60

Step-by-step explanation:

the 1 is in the ones place the 6 is in the tens place and the 8 is in the hudreths place.

6 0
3 years ago
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Show work please <br><br> A 18 <br> B 2<br> C 9 <br> D 1
NeTakaya

Answer:

a

Step-by-step explanation:

the need to equal the same and none of the lower numbers work

6 0
3 years ago
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