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3 years ago

Will GIVE BRAINLIEST IF LEGIT If

Mathematics

1 answer:

babymother [125]3 years ago

3 0

Step-by-step explanation:

h(x) = (f-g) (x) = 3x²+4x-10- 7x²+x-4

= -4x²+5x-14 (option D)

You might be interested in

What is the slope for y=7/2x - 2?

barxatty [35]

Easy peasy
slope intercept form is y=mx+b where m=slope

we see taht we have y=7/2x-2
therefor m=slope=7/2
the slope is 7/2

3 0

4 years ago

Find a:27=6:11, find a

trasher [3.6K]

Answer:

a = 14.73

Step-by-step explanation:

This ratio can also be written like this:

$\frac{a}{27} = \frac{6}{11}$

Then you can cross multiply to get

11a = 6 x 27

11a = 162

Divide both sides by 11

11a / 11 = 162 / 11

a = 14.73

3 0

3 years ago

Find the value of sin(a/2) if cosa= 12/13<br>

daser333 [38]

Answer: sin $\frac{a}{2}$ = ± $\frac{1}{\sqrt{26} }$

Step-by-step explanation:

We very well know that,

cos2A=1−2sin²A

⟹ sinA = ± $\sqrt{(1-} \frac{cos2A}{2} )$

As required, set A = $\frac{a}{2}$ & cos a= $\frac{12}{13}$ ,thus we get

sin $\frac{a}{2}$ =± $\sqrt{\frac{1-cos a}{2} }$

∴ sin $\frac{a}{2}$ =± $\sqrt{\frac{1-\frac{12}{13} }{2} }$ = ± $\frac{1}{\sqrt{26} }$

since ,360° < $\frac{a}{2}$ <450°

,180° < $\frac{a}{2}$ <225°

Now, we are to select the value with the correct sign. It's is obvious from the above constraints that the angle a/2 lies in the III-quadrant where 'sine' has negative value, thus the required value is negative.

hope it helped!

5 0

3 years ago

Select all of the following 2D shapes that may be formed by slicing a square pyramid?

ivann1987 [24]

Answer:

A and D

Step-by-step explanation:

Ok so first, if you slice parallel to the base, you can get a square.

If you slice parallel to a face, you get a triangle.

8 0

3 years ago

Please help!

seropon [69]

Answer:

0.246¯¯¯¯ written as a fraction in simplest form?

the answer is 1000÷246

8 0

4 years ago