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balu736 [363]
3 years ago
7

I am confused on how to do this

Mathematics
1 answer:
babymother [125]3 years ago
4 0
So, u would start by expanding the bracket and ignoring the 2 at the moment.
(x+9)(x+9)= x^2-18x+81(using the foil method!

Then u would put 2 at the front to get:
2(x^2+18x+81)
= 2x^2+36x+162
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What is the slope and y-intercept for y=1/2+4x​
kupik [55]
Slope: 4
Y-intercept = 1/2
7 0
3 years ago
Read 2 more answers
Ricky rides his bike 12 miles every day he stops 7 miles to rest write and solve an equation to find out how much further he has
kondor19780726 [428]
<h3><u>Question:</u></h3>

Ricky rides his bike 12 miles every day. He stops after 7 miles to rest. write and solve an equation to find out how much further he has to ride

<h3><u>Answer:</u></h3>

Ricky has to further ride for 5 miles

<h3><u>Solution:</u></h3>

Given that, Ricky rides his bike 12 miles every day

Let "x" be the remaining distance in miles he has to ride further

Total distance = 12 miles

Also, given that he stops after 7 miles to rest

Therefore, already covered distance = 7 miles

Therefore, we can frame a equation as,

remaining distance + already covered distance = total distance

x + 7 = 12

Solve the above equation for "x"

x = 12 - 7

x = 5

Thus Ricky has to further ride for 5 miles

7 0
3 years ago
In ABC, A = 4x, B = 3x + 1, C = 7x + 11. List the sides of ABC in order from shortest to longest.
BlackZzzverrR [31]

Sum of all angles of a triangle is equal to 180°. Therefore,

A + B + C = 180

Given that, A = 4x, B = 3x + 1, C = 7x + 11.

Hence, we can set up an equation as following:

4x + 3x + 1 + 7x + 11 = 180

14x + 12 = 180 Combine the like terms.

14x + 12 -12 = 180 - 12 Subtract 12 from each sides.

14x = 168

\frac{14x}{14} =\frac{168}{14} Divide each sides by 14.

So, x= 12.

Now by plug in x=12 in the given expressions of A, B and C we can get the measure of eah angles of the triangle. Therefore,

A = 4x = 4(12) = 48

B= 3x + 1= 3(12) + 1 = 36 + 1 = 37

C= 7x + 11 = 7(12) + 11 = 84 + 11 =95

From the above result we can see that C is the largest angle and B is the smallest angle.

There is a relationship of a triangle which state that the largest side is opposite side of the largest angle and similarly smallest side is opposite side of the smallest angle.

Here AB is the opposite side of the largest angle C. So, AB is the largest side.

Similarly AC is the smallest side.

So, the order from shortest to longest is B: AC, BC, AB

7 0
3 years ago
A 10 ounce container if milk contains 200 calories. how many calories does each ounce of milk contain?
kaheart [24]
The answer that is correct is 20 so there you go
5 0
3 years ago
Mr. Medina owns a house that he wishes to sell. The state in which he lives charges a 3.9%
umka21 [38]
Total tax bill is $9,004.50

Given:
Sales price         = 103,500
State sales tax   =        3.9%
County sales tax =        2.9%
City sales tax      =        1.9%

State sales tax    = 103,500 x 3.9% = 4,036.50
County sales tax = 103,500 x 2.9% = 3,001.50
City sales tax      = 103,500 x 1.9%  =<u>1,966.50</u>
<span>Total tax                                           </span>  9,004.50
8 0
3 years ago
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