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Trava [24]
3 years ago
8

Distribute(x+2)(x+9)a) x^2+15x+18b) x^2+6x+11c) x^2+7x+9d) x^2+11x+18​

Mathematics
1 answer:
Natasha2012 [34]3 years ago
6 0

i hope this helps! let me know if you want me to explain more. sorry the picture is a little blurry

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4 x 3 + 2 x 9 - 40<br> PLEASE!!!
Effectus [21]

The answer is 86

Following PEMDAS, which is:

parentheses

exponents

multiplication

division

addition

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I found that the answer was 86

4 0
2 years ago
Read 2 more answers
The length of a rectangle is 3 cm more than twice the width. The area of the rectangle is 65 square centimeters. Find the dimens
polet [3.4K]

Answer:

5 cm and 13 cm

Step-by-step explanation:

Let b be the width of the rectangle.

Length = 3+2b

The area of the rectangle is 65 cm²

We need to find the dimensions of the rectangle. The area of a rectangle is given by :

A = lb

65=(3+2b)b\\\\65=3b+2b^2\\\\3b+2b^2-65=0\\\\b=5\ cm,-6.5\ cm

Neglecting the negative value, the width of the rectangle is 5 cm.

Length = 3+2b

=3+2(5)

=3+10

=13 cm

Hence, the dimensions of the rectangle are 5 cm and 13 cm.

6 0
3 years ago
9/37 is changed to a decimal. What digit lies in the 2005th place to the right of the decimal point?
luda_lava [24]

Answer:

2

Step-by-step explanation:

Divide 9/37 and you get repeating decimal of 0.243

Divide 2005 by 3 because the decimal repeats 3 numbers

You will get reminder of 1 from dividing 2005 by 3

Move 1 place from the decimal point and you get 2

8 0
3 years ago
What are the points of inflection of k(x)=sinx-(1/4)sin2x
zalisa [80]

Answer:

Option d is correct.

Step-by-step explanation:

The point of inflection of a function y = f(x) at a pointy c is given by f''(c) = 0.

Now, the given function is

k(x) = \sin x - \frac{1}{4}\sin 2x

Differentiating with respect to x on both sides we get,

k'(x) = \cos x - \frac{1}{2} \cos 2x

Again, differentiating with respect to x on both sides we get,

k''(x) = - \sin x + \sin 2x = - \sin x + 2 \sin x \cos x

So, the condition for point of inflection at point c is

k''(c) = 0 = - sin c + 2 sin c cos c

⇒ sin c(2cos c - 1) = 0

⇒ sin c =  0 or \cos c = \frac{1}{2}

⇒ c = 0 or c = \pm \frac{\pi}{3}

Therefore, option d is correct. (Answer)

8 0
3 years ago
Dale had equal amounts of orange juice, milk, and water that he left in the refrigerator overnight. He took them all out and let
Evgen [1.6K]

Answer:

answer is A

Step-by-step explanation:

All of these liquids were the same temperature when Dale took them out of the refrigerator. They all spent the same amount of time sitting on the counter, but at the end of that time, each one was a different temperature. This means that different liquids change temperatures at different rates.

7 0
3 years ago
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