I’m trying to do this equation but don’t know where the 2 came from when you square it. Can somebody explain where the 2x come from? The 2x on the right side

Answers

Answer 1

Answer: okay so at the bottom it says square both sides so you have to square (x+1). when you do that you're basically just doing (x+1)(x+1) and you just use the foil method and end up with x^2 + 2x + 1

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How many subsets does the set {1, 2, 3} have?

Answers

$\{1;\ 2;\ 3\}\n\nsubsets:\n\{1\};\ \{2\};\ \{3\}\n\{1;2\};\ \{1;3\};\ \{2;3\}\n\{1;2;3\}\n\{\O\}\n\nAnswer:8\ subsets$

Subsets can have zero, 1, 2, or 3 members.

Zero members . . 1 subset
1 member . . . . . 3 subsets
2 members . . . . 3 subsets
3 members . . . . 1 subset

Total . . . . . . . . . 8 subsets

How to solve scientific notation

Answers

To convert to scientific notation, start by moving the decimal place in the number until you have a coefficient between.

Help me plz A. Hormone that helps the body control the level of glucose in the blood
B. The main cause of Type 2 Diabetes
C. Condition that makes it hard for the body to control the level of glucose in the blood.
D. Damage to the pancreas caused by one’s own antibodies
E. The elevation of glucose levels in the blood
F. Found to help with the treatment of clinical depression
G. Organ where insulin is produced
H. “Good” cholesterol
I. 90% to 95% of the cases of diabetes in America
J. Hardening of the arteries caused by a build-up of fatty materials

1. Diabetes (1 point)

2. Atherosclerosis (1 point)

3. Hyperglycemia (1 point)

4. HDL (1 point)

5. Obesity (1 point)

6. Type 1 (1 point)

7. Insulin (1 point)

8. Type 2 (1 point)

9. Pancreas (1 point)

10. Regular aerobic exercise (1 point)

Answers

A. Insulin

B. Diabetes

C. Hyperglycemia

G .Pancreas

H. HDL

I. Obesity

J. Atherosclerosis

D. Type 1
E. Hyperglycemia
F. Regular aerobic exercise

A deep sea diver’s depth is currently 30 m below the surface of the water.Which expressions represent a change in depth of d meters?

Choose exactly two answers that are correct.

A. -30d

B. -30 - d

C. -30/d

D. -30 + d

Answers

the answer is A and D -30+d but you can also get the answer by multiplying like lets say d=2 30+30=60 and 30*2=60.

A light private plane can fly 120 mph in still air. Flying against the wind, the plane can fly 320 miles in the same time it requires to fly 640 miles with the wind. Find the rate of the wind. A) 120 mph
B) 80 mph
C) 40 mph

Answers

Alright, lets get started.

A light private plane can fly 120 mph in still air.

Suppose the speed of wind = x mph

Against the wind, speed of plane will be = 120-x

With the wind, speed of plane will be = 120+x

Flying against the wind, the plane can fly 320 miles, so time taken will be

t = $(320)/(120-x)$

With the wind, the plane can fly 640 miles, so time taken will be

$t = (640)/(120+x)$

Both times are given same, so

$(320)/(120-x)= (640)/(120+x)$

Cross multiplying

$320(120+x) = 640(120-x)$

Dividing from 320

$120+x = 2(120-x)$

$120+x = 240-2x$

$3x = 120$

x = 40 mph

So, the speed of the wind is 40 mph. : Answer

Hope it will help :)

Answer:

Step-by-step explanation:

A $30 pair of jeans is on sale for $15. What is the percent of change for the pair of
jeans?

Answers

Answer:

50%

Step-by-step explanation:

All we need to do is find out what percent 15 is compared to 30. So think of 30 as "100%" in this case. We know it's on sale and selling for $15 so all we need to do is figure out what $15 is compared to $30.

30 ÷ 15 = 15.

Luckily in this case 15 is half of 30. So half of "100" would be 50. 50%.

50% is your answer.

Hope this helps and have a nice day!

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