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kotegsom [21]
3 years ago
8

Can someone please assist me on this problem, any help would be appreciated.

Mathematics
1 answer:
sashaice [31]3 years ago
3 0

Answer:

11x^2 -4x + 3

Step-by-step explanation:

(x^2-5x+7)+(10x^2+x-4)

= x^2-5x+7+10x^2+x-4

= 11x^2 -4x + 3

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Which number line model represents the sum of 1.25 + (-0.75) ?
sergeinik [125]

Answer:

Option c

Step-by-step explanation:

8 0
3 years ago
F (x) = x^2 + 2x - 5<br> g(x) = 2x + 4<br> What is (f• g)(x)?
Vilka [71]

Answer:

Step-by-step explanation:

This is a composite function, f(g(x)). This means, working from the inside function to the outside, we will take the function g and plug it in for x in the f function. g(x) = 2x + 4. We will plug that into f(x) and evaluate f(2x+4):

f(g(x))=(2x+4)^2+2(2x+4)-5 and I imagine your teacher has you simplify completely. We FOIL and distribute to get

f(g(x))=4x^2+16x+16+4x+8-5 which, by combining like terms, give us

f(g(x))=4x^2+20x+19

5 0
3 years ago
A triangle with vertices A(0,0), B(6,0), and C(0,9) is rotated 360 about the y-axis. What is the volume of the figure?
Luden [163]

Given:

A triangle with vertices A(0,0), B(6,0), and C(0,9) is rotated 360 about the y-axis.

To find:

The volume of the figure.

Solution:

Points A(0,0) and C(0,9) lies on the y-axis. Length of AC is 9 units.

Points A(0,0) and B(6,0) lies on the x-axis. Length of AB is 6 units.

If a triangle with vertices A(0,0), B(6,0), and C(0,9) is rotated 360 about the y-axis, then it will form a cone with radius 6 units and height 9 units.

Volume of a cone is

V=\dfrac{1}{3}\pi r^2h

where, r is radius of the base and h is vertical height of the cone.

Putting r=6 and h=9, we get

V=\dfrac{1}{3}\pi (6)^2(9)

V=\pi (36)(3)

V=108\pi

Therefore, the volume of the figure is 108\pi sq. units.

7 0
3 years ago
Ben Teal lost his weighted
11Alexandr11 [23.1K]
15 pounds each and 16 watermelons= 240 pounds. (15x16=240)
7 0
3 years ago
Read 2 more answers
Use the Law of Sines to solve for x. Round to the nearest whole number.
bagirrra123 [75]

Answer:

12.94

Step-by-step explanation:

By the law of sines:

x / sin(35) = 7.9 / sin70

x = 7.9 * sin(70)/sin(35)

= 7.9 * 0.9397 / 0.5736

= 12.94

6 0
3 years ago
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