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alina1380 [7]
3 years ago
8

Which of the following problems can be solved using the equation below? x+15=2x

Mathematics
1 answer:
pshichka [43]3 years ago
6 0

Answer:

Answer is below

Step-by-step explanation:

Subtract 2x from both sides.

x+15-2x=2x-2x\\-x+15=0

Subtract 15 from both sides.

-x+15-15=0-15\\-x=-15

Divide both sides by -1.

\frac{-x}{-1}=\frac{-15}{-1} \\x=15

So therefore your answer is 15

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5. Which of the following linear expressions is a factor of the cubic polynomial x^3 + 9x² +16x-12?
VLD [36.1K]

Answer:

(1) x+6

Step-by-step explanation:

Possible rational zeroes include ±1, ±2, ±3, ±4, ±6, ±12

Check each answer choice with synthetic division:

1 | 1 9 16 -12

 __1_10_26

    1 10 26 | 14

-2 | 1  9   16 -12

   __-2_-14_-4

      1  7   2  | -16

-6 | 1 9     16 -12

    __-6_-18_12

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Therefore, x+6 is a factor of the polynomial

5 0
3 years ago
Read 2 more answers
Find the least common multiple of 3, 6 and 15
suter [353]

Answer: 30

Step-by-step explanation:

*Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, ..., 30

* Multiples of 6: 6, 12, 18, 24, 30

* Multiples of 15: 15, 30

7 0
3 years ago
Suppose Cotangent (theta) = StartFraction 5 Over 12 EndFraction, where Pi less-than theta less-than StartFraction 3 pi Over 2 En
Agata [3.3K]

Answer:

Sin theta = 12/13

Step-by-step explanation:

From the question;

Cot theta = 5/12

Kindly recall;

Cot theta = 1/ tan theta

Hence, tan theta = 12/5

Mathematically

tan theta= opposite/adjacent

to get hypotenuse, we will use Pythagoras’ theorem which states that the square of the hypotenuse equals sum of the squares of the two other sides

let hypotenuse be h

h^2 = 12^2 + 5^2

h^2 = 144 + 25

h^2 = 169

h = √169

h = 13

But sine theta = opposite/ hypotenuse = 12/13

5 0
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It's 1 mile. She ran an 8th if an mile. If the ran 1/8 of a mile 8 times, it adds up to 1 mile.
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3 years ago
Mary has two coupons for a printer.
Tresset [83]

Answer:

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