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2 years ago

Which equations are correct?

Mathematics

1 answer:

Leno4ka [110]2 years ago

7 0

9514 1404 393

Answer:

C, D

Step-by-step explanation:

The applicable rules of exponents are ...

(a^b)(a^c) = a^(b+c)

The correct equations are the last two.

For the first two, the appropriate products are ...

$4c^4(3c^2)=4\cdot3c^{4+2}=12c^6\\\\3b^3(a^2b^4)=3a^2b^{3+4}=3a^2b^7$

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125% of x is 60. What is x

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Answer:

Step-by-step explanation:

1.put your percent over a 100 so

125%/100 then put 60 over x

2.then cross multiply 100x60=6000

3.then divide 6000 by 125 which is percent

4.your answer is-48

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3 years ago

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MissTica

Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

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2 years ago

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shepuryov [24]

Lines are described by equations of the form y = mx + b
The fast way of finding 'b' is to look for a place where x = 0 and plug in the x and y values into this equation. In the case of this line, when x = 0, y = 5:

5 = m(0) + b
5 = 0 + b
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To get the slope, 'm', we need to pick two points and divide the difference of their y values by the difference of their x values. Pick points where the line falls on the grid. The one we just used, (0,5), works well. So does (2,1).

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3 years ago

(a) A photography student borrows RM2 500 to buy a camera. The bank loans this money at a rate of 9 % capitalized monthly. What

Monica [59]

Answer:

The student will have to reimburse 2,991.03 two years later.

Step-by-step explanation:

This is a compound interest problem:

The compound interest formula is given by:

$A = P(1 + \frac{r}{n})^{nt}$

In which A is the amount of money, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per unit t and t is the time the money is invested or borrowed for.

In this problem, we have that:

A is the amount the student will have to reimburse two years later.

P is his loan. so $P = 2,500$

The bank loans this money at a rate of 9 % capitalized monthly. This means that $r = 0.09$ and $n = 12$ , since the money is compounded monthly, this means, 12 times in a year.

He will have to reimburse two years later, so $t = 2$

$A = P(1 + \frac{r}{n})^{nt}$

$A = 2,500(1 + \frac{0.09}{12})^{24}$

$A = 2,991.03$

The student will have to reimburse 2,991.03 two years later.

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3 years ago