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Schach [20]
3 years ago
11

D^2 + 2d - 8 = 0 explain plz

Mathematics
1 answer:
schepotkina [342]3 years ago
7 0

Answer:

d^2 +2d-8=0

first pick two numbers which add up to make +2 and by multiplying those two numbers they should be able to create -8.

so for example 4 and 2

4-2=2

4 x -2= -8

so now factorise:

d^2 +2d-8=0

d^2+4d-2d -8=0

d(d+4)-2(d+4)=0

d+4=0       d-2=0

d=-4          d=2

Step-by-step explanation:

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A triangle has angle measures of 47 degrees and 92 degrees. What is the measure of the third angle?
ludmilkaskok [199]

Answer:

The missing angle is 41 degrees

Step-by-step explanation:

First of all, a triangle is measured at 180 degrees in total

To find the missing measurement for the third angle, add the 47 and 92 degrees together which would equal 139 degrees.

47+92=139 degrees

Next just subtract 139 from 180 to get your answer.

180-139=41 degrees

The answer is 41 degrees

<u><em>Hope this helps</em></u>

5 0
3 years ago
The circumference of a circle is 11π inches. What is the area, in square inches, of the circle? Express your answer in terms of
BabaBlast [244]

Answer:

30.25 pi

Step-by-step explanation:

The circumference of a circle is given by

C = 2 * pi *r

11 pi = 2 * pi *r

divide each side by 2 pi

11/2 = 2 ( pi) * r/ ( 2pi)

11/2 = r

We can find the area by

A =  pi * r^2

   =  pi ( 11/2) ^2

   =  pi ( 121/4)

   = pi ( 121/4)

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8 0
4 years ago
Read 2 more answers
Wat is 19 divided by 43
Alenkinab [10]

It is 0.44186046511.

3 0
3 years ago
ASAP PLSSS HELP WILL GIVE BRAINLIEST
kodGreya [7K]
Take the f function minus the g function and subtract like terms
4 - (-2) is 6, so that part is 6*8 to the x power,
then you have the 18x with nothing subtracted from it,
and then -7 - -12....or at least that looks like -12...hard to see with it being covered up...anyway that part would be 5.

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5 0
3 years ago
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Juliette [100K]

Answer:

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Step-by-step explanation:

Using the Additive Inverse, it is the same as saying 57+17 = 74

please give brainliest, have a nice day

5 0
3 years ago
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