2 years ago

What is the value of -3r+ 8 when r=4

Mathematics

1 answer:

denis23 [38]2 years ago

6 0

Answer: -4.

Explanation: Because -3*4=-12. -12+8=-4.

You might be interested in

Find the different between compound interest payable anually and half anually for a amount Rs14000 at the rate of 12•\•per annum

Ostrovityanka [42]

Answer:

$113.08

Step-by-step explanation:

The formula for calculating future value:

FV = P (1 + r/m)^mn

FV = Future value

P = Present value

R = interest rate

N = number of years

m = number of compounding

14,000(1.12)^2 = 17,561.60

14,000 ( 1 + 0.12/2)^(2x2) = 17674.68

Difference : 17674.68 - 17,561.60 = $113.08

8 0

2 years ago

The advertising department of a nationally circulated magazine wishes to estimate the mean age of its subscribers within 0.5 yea

zhenek [66]

Answer: Option 'd' is correct.

Step-by-step explanation:

Since we have given that

Margin of error = 0.5 years

Standard deviation = 5

At 90% confidence, z = 1.645

We need to find the minimum size of the sample they must take.

So,

$n=(\dfrac{z\sigma}{E})^2\\\\n=(\dfrac{1.645\times 5}{0.5})^2\\\\n=270.6\\\\n\approx 271$

Hence, Option 'd' is correct.

5 0

2 years ago

Josh's soccer team had a competition to see which player should be the goalie. Each player tried to block 15 kicks from entering

poizon [28]

Do not click the link!

8 0

3 years ago

What are the factors of 5

emmasim [6.3K]

Answer:

1 and 5. Can I get a brainliest???

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

A company has $54,000 in a bank account that pays an interest of 2% per year. How much money can I withdraw at the end of one ye

RSB [31]

Answer:

$55,080

Step-by-step explanation:

Hope this helps.

3 0

3 years ago

Read 2 more answers