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3 years ago

I will give brainiest to whoever answers correctly !!

Mathematics

1 answer:

IgorC [24]3 years ago

5 0

Answer:

Interest rate, R = 244%

Step-by-step explanation:

Given the following data;

Principal = $270

Simple interest = future amount - principal = 309.60 - 270 = $39.60

Time = 22/360 = 0.06 years

To find the interest rate?

Mathematically, simple interest is calculated using this formula;

$S.I = \frac {PRT}{100}$

Where;

S.I is simple interest.

P is the principal.

R is the interest rate.

T is the time.

Substituting into the equation, we have;

$39.60 = \frac {270*R*0.06}{100}$

Cross-multiplying, we have;

$39.6 * 100 = 16.2*R$

$3960 = 16.2R$

$R = \frac {3960}{16.2}$

Interest rate, R = 244.44 ≈ 244%

Therefore, the pawnbroker charged Elisa a simple interest rate of 244%.

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One of thr solutions to x2-2x-15=0 is x=-3 what is the other solution

Allisa [31]

(x-5)(x+3) = 0

Apparently, the other solution is x = 5.

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3 years ago

Travis was attempting to make muffins to take to a neighbor. The recipe that he was using required 3/4 cup of sugar and 1/8 cup

bogdanovich [222]

A. The recipe required 3/4 cup of sugar and 1/8 cup of butter.

The ratio of the sugar to butter in the original recipe is

$\dfrac{\frac{3}{4}}{\frac{1}{8}}=\dfrac{3}{4}\cdot \dfrac{8}{1}=\dfrac{6}{1}.$

B. If Travis accidentally put a whole cup of butter in the mix, then he needs to put

$\dfrac{3}{4}\cdot \dfrac{6}{1}=\dfrac{9}{2}=4\dfrac{1}{2}$ cup of sugar.

C. Travis has to put 1/8 cup of butter, but he put 1 cup of butter. The ratio is

$\dfrac{1}{\frac{1}{8}}=\dfrac{1}{1}\cdot \dfrac{8}{1}=\dfrac{8}{1}.$

If Travis wants to keep the ratios the same as they are in the original recipe, he needs to put 8 times more of all the other ingredients.

8 0

3 years ago

Factor completely 7x2-45x-28

MatroZZZ [7]

9514 1404 393

Answer:

(x -7)(7x +4)

Step-by-step explanation:

The term -45x can be rewritten using factors of (7)(-28) that have a total of -45. Those factors would be ...

(7)(-28) = (4)(-49)

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6 0

3 years ago

Please help

RoseWind [281]

Substitute.
r – 2s ⇒ 8.2- 2* -3.7
$8.2-2*-3.7 \\ use -pemdas \\ 8.2-(-7.4) \\ 15.6 \\ Answer- D.15.6$

8 0

3 years ago

3 + 2 x 7 - 30(^2) help me

shepuryov [24]

There is no solution to this problem. Why? Well, see below for an explanation!

We can initially solve this problem using PEMDAS. Where we go wrong will be identified later. The P stands for Parenthesis, but there are none in this equation so we can skip that step. Next is E, which stands for Exponents. We do have an exponent, but it is separate from the problem. That would deem the problem invalid to solve because there is no base number for the exponent to be solved. Disregarding the exponent, we can solve by using M, which means Multiplication.

2 x 7 = 14

Next step, we can simplify to make the equation a tad bit neater.

3 + 14 - 30

Next up is D, meaning we need to divide. There are no numbers to divide though, so this step can be skipped.

Next step would be A, meaning we need to add.
3 + 14 = 17

Next step, we can simplify to make the equation neater as stated above.

17 - 30

17 - 30 = -13.

Disregarding the exponent, your answer would be -13. Including the exponent, however, would make the equation irrelevant. If you need extra help understanding this, let me know and I will gladly assist you.

3 0

2 years ago