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Sveta_85 [38]
3 years ago
11

Which statement is true about the factorization of 30x2 + 40xy + 51y2? A.B.C.D

Mathematics
1 answer:
vladimir2022 [97]3 years ago
7 0
The answer is c........
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Please answer this ASAP. The question is down below. Thank you!
Sonja [21]

Answer:

y = .5x^2 -2x -5

Step-by-step explanation:

Well we can start by seeing if the parabola is the same width by comparing it to its parent function ( y = x^2 )

In y = x^2 the 2nd lowest point is just up 1 and right 1 away from the vertex.

This is not true for our parabola.

So we can widen it by to the desidered width by making the x^2 into a .5x^2.

So far we’ve got y = .5x^2

Now the parabola y intercept is at -5.

So we can add a -5 into the equation making it.

y = .5x^2 - 5

Now for the x value.

So we can find the x value by seeing how far away the parabola is from from the y axis.

So the x value is -2x.

So the full equation is y = .5x^2 -2x -5

Look at the image below to compare.

7 0
3 years ago
Read 2 more answers
An object in the shape of a rectangular prism has a length of 5 inches, a width of 3 inches, and a height of 2 inches. The objec
belka [17]

Answer:

4,080grams

Step-by-step explanation:

the formula for density is:

d=\frac{m}{V}

where d is density, m is mass, and V is volume.

solving for m in the last equation:

m=d*V

so if we find the volume and multiply it by the density d=8.3gr/cm^3  we will get the mass of the object.

The volume of a rectangular prism is given by:

V=l*w*h

where l is length, w is width and h is height:

l=5in\\w=3in\\h=2in

we substitute to find the volume:

V=5in*3in*2in\\V=30in^3

since the density has units of cm^3 we need the volume also in units of cm^3 , so we make the conversion using:

1in^3=16.3871cm^3

multiplying by 30:

30in^3=491.612cm^3

and now we find the mass with the equation:

m=d*V

substituting d and V:

m=(8.3gr/cm^3)(491.612cm^2)\\m=4,080.36gr

the nearest gram is: 4,080grams

8 0
3 years ago
Can anyone help me with theses problems?
horrorfan [7]
A (-1,4)
B (7,-3)
C (-3,-1)

5 0
3 years ago
Read 2 more answers
In the diagram below, BD is parallel to XY What is the value of y?
elena55 [62]

Answer:

y =110^\circ

Step-by-step explanation:

Given

See attachment for diagram

Required

Find y

From the attachment, 70 and y are interior angles.

So:

70 + y = 180

Solve for y

y = 180 - 70

y =110^\circ

5 0
3 years ago
Emma saves $2 each day.How much money does she save in a week?<br><br> Show the work
pogonyaev
If she saves 2$ everyday and there are 7 days in a week, all you would need to do is multiply 2 X 7
she saves 14$ in one week
7 0
3 years ago
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