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Rainbow [258]
3 years ago
5

Scientists are measuring the thickness of ice on a large lake. When they first measure the ice, it is 3.1 inches thick. Three we

eks later the ice was measured to be 5.5 inches thick.
Mathematics
1 answer:
yaroslaw [1]3 years ago
3 0

Answer:

Step-by-step explanation:

What is the question?

Amount of change = 5.5-3.1 = 2.4 inches

Percentage change = 2.4/3.1 ≈ 77.4% increase

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Rewrite without parentheses and simplify. (u+3)^2
blsea [12.9K]

Answer:

u^2 + 9

Step-by-step explanation:

you would have to put the exponent on the u and 3

so it would by u^2 + 3^2

but simplified it would be

u^2 + 9

we cannot simplify further since we don't know what u equals

5 0
3 years ago
Solve each equation. Show your work or explain your method. Each explanation is worth 2 points. A. 2(x - 3) = 14 b. 12 (x + 10)
makkiz [27]

Answer:

A. 3x+2=14. 3×+2-2=14-2. 3×=12

B. 12(×+10)=24. (12)(×)+(12)(10)=24. 12+120=24. 12×+120-120=24-120

C. 12×= -96. 12×/12. -95/12 x= -8

4 0
2 years ago
I wanna give some points to some ppl again today so tell me how was your day
stiks02 [169]

Answer:

It was good how about you? :D

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
PLEASE HELP. WILL MARK BRAINLIEST IF CORRECT
Luda [366]

9514 1404 393

Answer:

  (b)  Congruent Figures

Step-by-step explanation:

Reflections, rotations, and translations are called "rigid transformations" because they do not change the size or shape of the figure. The image is always congruent to the original.

On the other hand, dilations change the size of the figure, so the image is <em>not congruent</em> with the original.

Rigid transformations result in congruent figures.

6 0
2 years ago
Using factor theorem , show that (x -4) is a factor 2x3 + x2 -26x - 40 and hence factorize completely.
notka56 [123]

Step-by-step explanation:

if x-4 is a factor of 2x^3 + x^2- 26x - 40

then f(4) = 0

f(x) = 2x^3 + x^2- 26x - 40

f(4) = 2(4)^3 + (4)^2 - 26(4) - 40

f(4)= 2(64) + 16 - 104 - 40

f(4) = 128 + 16 - 104 - 40

f(4) = 0

hence factorize completely is the photo

7 0
2 years ago
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