I need help! Math question

Mathematics

1 answer:

iren2701 [21]3 years ago

8 0

Again, a spreadsheet or suitable calculator makes this short work.

The sum is 184.

_____
The terms being summed are ...
2·3² +3 = 2·9 +3 = 18 +3 = 21
2·4² +3 = 35
2·5² +3 = 53
2·6² +3 = 75
Their total is
21 +35 +53 +75 = 184

You might be interested in

Write it in terms of x and y...

zimovet [89]

That would mean we're doubling the number of peanuts to get raisins. So, we would have 2x+y for the total amount.

7 0

3 years ago

Identify the sample space of the probability experiment: Answering a true or false question.

marusya05 [52]

Answer:

there are 5

Step-by-step explanation:

"im different"

5 0

2 years ago

Please help!! I'll give 30 points and brainliest.

Valentin [98]

Step-by-step explanation:

$3 + \frac{9}{4} = \frac{9}{x+4} \\ \\ \therefore \: \frac{3 \times 4 + 9}{4} = \frac{9}{x+4} \\ \\ \therefore \: \frac{12 + 9}{4} = \frac{9}{x+4} \\ \\ \therefore \: \frac{21}{4} = \frac{9}{x+4} \\ \\ \therefore \:21(x + 4) = 36 \\ \\ \therefore \:21x + 84 = 36\\ \\ \therefore \:21x = 36 - 84\\ \\ \therefore \:21x = - 48\\ \\ \therefore \:x = \frac{-48}{21} \\ \\ \therefore \:x = \frac{-16}{7} \\ \\ \huge \red{ \boxed{ \therefore \:x = - 2 \frac{2}{7} }}\\ \\$

8 0

3 years ago

Explain how to write 28% as a rate per 100

harkovskaia [24]

28% equals 28/100. So, 28% equals 28 per 100.

8 0

3 years ago

Two trains are moving towards each other. One train moves at a speed of 50 mph, and the other train travels at 60 mph. How soon

Margaret [11]

I think that they will meet in 3 hours and 11 min but I’m not too sure

4 0

2 years ago

Read 2 more answers