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IRISSAK [1]
3 years ago
6

Let n =21. What is the value of n + 10?

Mathematics
2 answers:
SSSSS [86.1K]3 years ago
7 0
Let n=21
n+10
21+10
=31

Sergio039 [100]3 years ago
3 0
I think it is 21+10=31...
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The sum of 6 consecutive integers is 387. What is the sixth number in this sequence.
11111nata11111 [884]

Answer:

67!

Step-by-step explanation:

A way to look at it is, since the number is 387, it can be broken into 6 parts. 50x6 is about 300. That leaves 87 to be left over. So it's safe to assume each number will be around 50-60, so I started to add up six consecutive numbers together until I reached my final set of numbers to reach 387.

My numbers were 62+63+64+65+66+<u><em>67</em></u>=387

I hope this makes sense!

7 0
3 years ago
An investment gains $5 in value on one day. The next day, it loses $3 in value. Represent each of these using integers.
kap26 [50]

Answer:

+5 and -3

Step-by-step explanation: It gained 5 in value which is +5. It loses 3 in value which is -3.

4 0
3 years ago
Find a cubic polynomial whose zeros are 1/2,1 and -3.
Alexxx [7]

Answer:

2x³+3x²-8x+3

Step-by-step explanation:

So we know x=½,x=1 and x=-3

Then (2x-1)(x-1)(x+3) are the factors

(2x-1)[(x²+3x-x-3)]

(2x-1)[(x²+2x-3)]

2x³+4x²-6x-x²-2x+3

2x³+3x²-8x+3

5 0
2 years ago
Rajesh is working out the area of a circle with radius 10 he writes
Maru [420]

Answer:

He multiplied the radius by 2 instead of squaring it

7 0
3 years ago
12345678910111213141516
Galina-37 [17]

Step-by-step explanation:

oh, come on. you can just use common sense.

a local minimum is a point where the curve goes down to, and then turns around and starts to go up again. that point in the middle, where it turns around and does not go down any further, is the minimum.

for the maximum the same thing applies, just in the other direction (the curve goes up and turns around to go back down again).

a)

the local minimum values (y) are

-2, -1

b)

the values of x where it had these minimum values are

-1, +3

4 0
2 years ago
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