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3 years ago

8

What is -14 w -21 and factoring expressions? please give me the correct answer because I have tried so many different things tha

t I cannot figure it out

1 answer:

lawyer [7]3 years ago

4 0

Look online it would help and always look at the second sentence

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3 years ago

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2 years ago

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A bean plant grows at a constant rate for a month. After 10 days, the plant is 25 centimeters tall. After 20 days, the plant is

wariber [46]

Y = 2x + 5

If you take the height at 10 days, 25 centimeters, after 10 more days the height is 45 centimeters, meaning for those 10 extra days the been plant grown 20 centimeters. Since we're told the plant is growing at a constant rate, this shows the bean plant is growing 2 centimeters per day. We can represent this with y = 2x. (After 10 days, the bean plant will be 20 centimeters, after 20 days, the bean plant will be 40 centimeters, etc.)

However, this is not completely true yet. As you can see, after the first 10 days the plant is not 20 centimeter, it's 25 centimeters. We already know the rate in which the plant is changing, but now we need to find the height that the plant was originally, before it started growing.

After the first 10 days, the plant is 25 centimeters tall. Since we know that the plant is growing 2 centimeters per day, we can subtract 20 from 25 to find the original height of the bean plant.

25 - 20 = 5
The bean plant was originally 5 centimeters.

This makes our final equation y = 2x + 5.
2x is the slope, and 5 is the y intercept.

Hope this helps1!

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3 years ago

2. Every month, Jenny and Gopal ________ the orphanages in China. They have been to five orphanages so far.

aleksandr82 [10.1K]

Answer:

2. A

3. B

4. B

5. B

6. C

7. C

8. B

9. D

10. C

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3 years ago

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What is the factored form of the expression?Factor completely.15g^3+18g^2-10g-12

Komok [63]

Step 1: write the number as a product, helps visualizing common factors.
$3*(5g)*g^2 + (2*3)*3 g^2-2*(5g) -2*(2*3)$
I've marked things being repeating, so, group them up
$5g(3g^2-2)+6(3g^2-2)$
Now you have a common factor again
$(3g^2-2)(5g+6)$
Extra, if you want to split the first one, you can see it as the difference of $(\sqrt{3}g)^2$ and $\sqrt{2}$ which is further split into $( \sqrt{3} g+\sqrt{2}) (\sqrt{3} g-\sqrt{2})$

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3 years ago