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pickupchik [31]
3 years ago
13

Can l please get help ​

Mathematics
1 answer:
maria [59]3 years ago
4 0

Answer:

-10x^2 +9+8x^2-5x+7=-2x^2-5x+16

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Hannah has 36 space rocks total. How many more purple rocks does Hannah have than blue rocks?
DiKsa [7]

Answer:

720

Step-by-step explanation:

i hope this helps

8 0
2 years ago
Anna bought 8 goldfish and 2 rainbow fish for her aquarium. The rainbow fish cost 6 dollars more than the goldfish. She paid a t
Anton [14]
Let the price of the goldfish be x
Let the price of the rainbow fish be y

Anna bought 8 fish, therefore, Anna paid 8x for the gold fish
Anna bought 2 rainbow fish, therefore, Anna paid 2y for the rainbow fish

We know that the total amount that Anna paid is 37$.
Therefore:
8x + 2y = 37 ..................> equation I

Now, we know that the rainbow fish cost 6$ more than the goldfish (since the verb "cost" is plural, therefore the total payment of rainbow fish is 6$ more than the total payment of gold fish).
Based on this,
2y + 6 = 8x 
2y = 8x - 6 ...................> equation II

Substitute by equation II in equation I, we can get the following equation:
8x + 8x - 6 = 37 
16x = 43 ................> The desired equation (equation III)

Solving equation III, we can calculate the price of one gold fish as follows:
16x = 43
x = 2.6875$

If we substitute by the value of x in equation I, we can calculate the price of one rainbow fish as follows:
8(2.6875) + 2y = 37
y = 7.75$
5 0
3 years ago
Draw the following graph on the interval −195∘ :<br> y=cos(x)+2<br> What is the amplitude of the function?<br> What is the perio
Darya [45]

y=cos(x)+2

What is the amplitude of the function?

What is the period of the function?

6 0
3 years ago
1. The graph of y = x2 is translated 4 units down and 3 units to the left. It is also stretched by a factor
slega [8]

Answer:

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Step-by-step explanation:

7 0
2 years ago
Given sin x = .24, find cos x
Nikolay [14]

Answer:

17?

Step-by-step explanation:

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4 0
3 years ago
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