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Elena-2011 [213]
2 years ago
6

2x(5-x)+3x^2 shown work please

Mathematics
2 answers:
nekit [7.7K]2 years ago
5 0

\\ \rm\Rrightarrow 2x(5-x)+3x^2

\\ \rm\Rrightarrow 10x-2x^2+3x^2

\\ \rm\Rrightarrow 10x+(-2+3)x^2

\\ \rm\Rrightarrow 10x+x^2

\\ \rm\Rrightarrow x^2+10

Liula [17]2 years ago
4 0
2x(5-x)+3x²
=x(2(5-x)+3x)
=x(10-2x+30x)
=x(10+x)

OR

2x(5-x)+3x²
=10x-2x²+3x²
=10x+x²

Hope my answer helped u :)
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A cactus casts a shadow 33 feet long. At the same time of day, Liam who is 6 feet tall, casts a shadow 9 feet long, as shown.
castortr0y [4]

Answer:

here's the solution :-

1.) =》the base of the larger triangle is the length of shadow formed by cactus .

so, length of cactus is : 33 feet.

2.) now, jn the smaller triangle formed by liam and it's shadow : -

=》

since both triangle form 90° the bases of both the larger and smaller triangles are parallel , so the base angles of larger triangle = corresponding base angles of the smaller triangle

hence, the both triangles are similar

( by A.A postulate )

now since the both triangles are similar, the the sides will be proportional ,

=》

\frac{9}{33}  =  \frac{6}{x}

=》

x =  \frac{6}{9}  \times 33

=》

x = 2 \times 11

=》

x = 22

so, length of the cactus = x = 22 feet

6 0
3 years ago
J- 7.5 = 16.937 ????
Leviafan [203]
Add 16.937 and 7.5. It's basically doing the problem backwards.
8 0
3 years ago
Jasmine is in charge purchasing tubes of silicone sealant, used for finishing restroom facilities. She finds that she is able to
Georgia [21]

The question attached is:

Is Jasmine correct about the silicone sealant cones?

If you think Jasmine is correct to explain, why.

Answer:

Jasmine is correct about the silicone sealant cones

Step-by-step explanation:

Given that:

Jumbo cone of sealant has a top diameter of 12 inches and a height of 14 inches, Suppose Jasmine orders or demands for two regular cones of regular sealant, definitely, that will be equal to the Jumbo cone of sealant.

This is because the top diameter when put together in a Jumbo cone will give an actual result as a Jumbo cone, for as much as 6 × 2 = 12 inches (top diameter) and 7 × 2 = 14 inches (height).

8 0
3 years ago
What are the slope and y-intercept of the line described by the equation<br> y= 4x - 7?
Verdich [7]

Answer:

A. Slope: 4; y-intercept: (0-7)

Step-by-step explanation:

The equation given is in slope-intercept form, y =mx+b, where m is the slope and b is the y-intercept.

Our equation is y=4x -7,

Where m = 4 b = -7

If m = to the slope and b = to the y-intercept, our slope would be 4/1 or 4, and our y-intercept would be (0,-7).

The answer, A would be the best for the question.

Hope it helps!

8 0
3 years ago
How do you do questions 3 and 4 please thank you !!!
levacccp [35]
Angle AKB is 50°...Angle ACF is 90° cuz if u look at the pic closely it shows the little box 
8 0
3 years ago
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