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navik [9.2K]
3 years ago
12

Im unsure how to do this

Mathematics
2 answers:
SOVA2 [1]3 years ago
8 0
The answer will be:

7-8x-6x^2
kkurt [141]3 years ago
4 0
Try combining the numbers with like terms, like 5x^2 and -11x^2. Then I will help you out.
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Find three consecutive even integers such that the<br> sum of the smallest and the largest is 36.
erastova [34]

n= smallest integer

n+2= middle integer

n+4= largest integer

n + n + 4 = 36

2n+ 4 = 36

2n=32

n= 16 which means that the smallest integer is 16

then you substitute it into the equation for the largest integer

n+4=20

16, 18, 20 is the answer

5 0
3 years ago
Which of the following is the point and slope of the equation y + 14 = 7(x - 18)?
skad [1K]

Answer:

y = 7x - 140

The slope is 7

The y-intersept is -140

= (7, -140)

Step-by-step explanation:

y + 14 = 7(x - 18)

y + 14 = 7x - 126

y =7x - 126 - 14

y = 7x - 140

8 0
3 years ago
A 5-pound sack of potatoes is supposed to weigh 5
TEA [102]

Answer:

t test for one mean.

met

met

met

Step-by-step explanation:

5 0
2 years ago
If the interest rate is 5% how long will it take you to double your money ?
Triss [41]

Answer:

If your money is earning a 5% interest rate annually, then it will take 14.4 years to completely double itself.

Step-by-step explanation:

An easy rule of thumb to remember is to take 72 and divide it by the intrest rate as if it was a whole number. For instance, if you were looking at an 8% interest rate, then it would take 9 years to double.

72/5 = 14.4

Hope this helps!

6 0
3 years ago
Sin^2x + sin^2x + cos²x
Nezavi [6.7K]

Answer:

Answer:

A. 2 sinx cosx - 1 + 2 sin^2 x.

Step-by-step explanation:

sin2x = 2 sinx cosx

cos2x = cos^2x - sin^2x

So sin2x - cos2x =  2 sinx cosx - ( cos^2x - sin^2x)

But cos^2 x = 1 - sin^2 x, so we have:

2 sinx cosx - (1 - sin^2 x - sin^2x)

= 2 sinx cosx - 1 + 2 sin^2 x.

7 0
3 years ago
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