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3 years ago

Can someone help with this question? pretty please! Also I have no idea if it is in the right subject sorry....

Mathematics

2 answers:

alukav5142 [94]3 years ago

8 0

The answer is b, a then c

Rina8888 [55]3 years ago

4 0

Answer:

I believe it is

1) b

2) a

3) c

Step-by-step explanation:

I hope this helps, and is right

Have a wonderful night!

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Multiply (2 – 71)(-1 + 47)

Serhud [2]

(2-7i)(-1+4i)
2x-1=-2
2x4i= 8i
-7ix-1=7i
-7ix4i=-28i^2

so the answer is
-2+8i+7i+28i^2
=28i^2+15i-2

:)

6 0

3 years ago

Read 2 more answers

Using technology, determine the quarterly payment on a 4 year loan of $16,231 at 5.1% compounded quarterly. Round your answer to

pishuonlain [190]

Answer:

$1,127.86

Step-by-step explanation:

The amortization formula is ...

A = Pr/(1 -(1+r)^-n)

where A is the payment amount, P is the principal amount, r is the interest rate per period, and n is the number of periods.

Here, we have P=$16,231, r=0.051/4=0.01275, n=4·4=16.

So, the payment is ...

A = $16,231·0.01275/(1 -1.01275^-16) = $1,127.86

The quarterly payment amount is $1,127.86.

8 0

3 years ago

Read 2 more answers

michelle invested $10000 in an account that earns 8.5% interest that is compounded monthly. Determine the amount of interest ear

Semmy [17]

Answer:

$25,626.53

Step-by-step explanation:

You are going to want to use the compound interest formula, which is shown below.

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

P = initial balance

r = interest rate (decimal)

n = number of times compounded annually

t = time

First, change 8.5% into a decimal:

8.5% -> $\frac{8.5}{100}$ -> 0.085

Now lets plug in the values into the equation:

$A=10,000(1+\frac{0.085}{12})^{12(15)}$

$A=35,626.53$

Lastly, subtract the total from the initial balance:

$35,626.53 - 10,000 = 25,626.53$

Michelle earned $25,626.53 in interest.

7 0

3 years ago

What is blank divided by 84.8=10.6

il63 [147K]

To find that out, do the reverse of dividing which is multiplying.

10.6 × 84.8 = 898.88

Check your answer by dividing. So 898.88 divided by 84.8 gives 10.6. So it is correct

So your answer is 898.88

6 0

3 years ago

Read 2 more answers

A company is developing a new high-performance wax for cross country ski racing. In order to justify the price marketing wants,

andrew11 [14]

Answer:

A)Yes they should market the wax, because it melts before 55 seconds

C) Null hypothesis: mean <55 vs. Alternative hypothesis :mean =55

D) the value is 51.33 seconds

Step-by-step explanation:

The selected samples for the champion are : 57.9, 62.9, 50.6, 50.5,48.2,47.2,50.2 and 43.1

The mean is ;

Sum =57.9 + 62.9 + 50.6 + 50.5+48.2+47.2+50.2+ 43.1 =410.6

Mean= 410.6/8 =51.33= mean

Assuming Significant =0.05 thus applying this level will give you 51.28-51.38

if specifically, the mean time to finish their standard test course should be less than 55 seconds for a former Olympic champion, then the null hypothesis is correct

Then;

Null hypothesis: mean <55

Alternative hypothesis :mean =55

7 0

3 years ago