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vampirchik [111]
3 years ago
8

Please help! I need help on my math grade problem. Please explain if you could

Mathematics
2 answers:
KATRIN_1 [288]3 years ago
7 0
Answer: 3! Hope this helps!
Rus_ich [418]3 years ago
4 0

Answer:

Answer = 3

Step-by-step explanation:

Constant of proportionality = slope

Slope=\frac{y^{2}-y^{1}  }{x^{2}-x^{1}  } =\frac{12-9}{4-3}=\frac{3}{1}=3

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schepotkina [342]

Answer:

Last option (bottom right)

Step-by-step explanation:

The scientific notation for 0.002 is 2*10^-3 (you move the decimal 3 to the right to get 2)

multiply the number of mustard seeds with this and you get 80. In scientific notation it is 8*10^1 (move the decimal 1 to the left to get 8.0)

5 0
2 years ago
Joseph has 48 comic books. He sold one-fourth of his collection to his friend. He brought twice the number of comic books as he
Tresset [83]

Answer:

108

Step-by-step explanation:

Given that Joseph has 48 comic books.

As he sold 1/4 of his collection to his friend, so

The number of books, Josef sold = 1/4 x 48 = 12.

The number of remaining books, Josef has = 48 - 12 = 36.

As he brought twice the number of comic books as he has now, so,

the number of comic books, Josef brought = 2 x 36 = 72.

Now, total number of comic books, Josef has = 36 + 72 = 108.

6 0
3 years ago
Nicolas has $650 to deposit into two different savings accounts. • Nicolas will deposit $400 into Account I, which earns 3.5% an
Alinara [238K]
C) $694.25

Why?
Because you want to times the interest by 2 (1 is for one year but u want to find the amount after two years) then you multiply the amount given to each bank separately so:

400*0.07 (7% which is 7/100) = 28
250*0.065 (6.5% which is 65/1000) = 16.25

Then u add the interests together:
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Finally you add that to the amount you started with:
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5 0
3 years ago
Prove that cos(2????) = 2cos2(????) − 1 for any real number ????.
Over [174]

Answer:

Sure

Step-by-step explanation:

6 0
3 years ago
If a=4b^2 and b=-1/2e^2, what is the value of a to the nearest tenth?
Maru [420]
To answer, it is assumed that e here is the Euler number which is equal to 2.718. Substitute this value to the e of the second equation to get the value of b.
                                 b = 0.5(2.718^2)  = 3.6945
Then, we substitute this value to the first equation to get the value of a.
                                        a = 4(3.6945^2) = 54.498
Thus, the answer is approximately equal to 54.5. 
3 0
3 years ago
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