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olasank [31]
2 years ago
12

I honestly have no clue how to do these

Mathematics
1 answer:
densk [106]2 years ago
4 0

Answer:

-2^{2} -4(1)(5)

so the answer would be c.

Step-by-step explanation:

The discriminant is the following equation:

b^{2} -4ac

You just simply plug in the values of the coefficients.

0=x^{2} -2x+5

a = 1 (first terms coefficient)

b = -2 (second terms coefficient)

c = 5 (last terms coefficient)

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Find the sum of the geometric sequence -3,15,-75,375,... when there are 7 terms and select the correct answer below.
vivado [14]

Answer:

-39,063

Step-by-step explanation:

In this geometric, sequence, you are multiplying by -5. So, we can continue the sequence by mulitplying 375(your last value) by -5 and so on, until we have 7 total terms.

Now we add the terms together:

-3+15+-75+375+-1875+9375+-46875

=-3+15-75+375-1875+9375-46875

=-39063

Hope this helps :)

8 0
3 years ago
Find the radius of each figure. round to the nearest tenth.
k0ka [10]

Answer:

8.25475 m

Step-by-step explanation:

pi*r^3 is the formula for a sphere.


Using this, pi is a nmber (about 3.14) and we only don't know the radius, but we know what it equals.


pi*r^3=1,767.1

First divide by pi, then get ride of the cube by cube rooting both sides.


The cube root of 1767.1/pi (remember to cube root both denominator and numberator!!!) is about 8.25475 m

6 0
3 years ago
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egoroff_w [7]
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2 years ago
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deff fn [24]

Answer:

id say A

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3 0
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