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kolbaska11 [484]
3 years ago
10

Which shows the equation below written in standard form?

Mathematics
2 answers:
Aleksandr [31]3 years ago
4 0
9-7x=(4x-3)^2+5 \\
9-7x=16x^2-24x+9+5 \\
9-7x=16x^2-24x+14 \\
0=16x^2-24x+14-9+7x \\
0=16x^2-17x+5 \\
\boxed{16x^2-17x+5=0} \\
\hbox{answer D}
olya-2409 [2.1K]3 years ago
4 0

Answer:

Option D - 16x^2-17x + 5=0

Step-by-step explanation:

Given : Expression 9 - 7x = (4x - 3)^2 + 5

To find : Which shows the equation below written in standard form?

Solution :

Step 1 - Write the expression

9 - 7x = (4x - 3)^2 + 5

Step 2 - Solve the square term

9 - 7x = 16x^2+9-24x + 5

Step 3 - Place like term together

16x^2-24x+7x + 5+9-9=0

16x^2-17x + 5=0

Therefore, Option D is correct.

The standard form of the equation is 16x^2-17x + 5=0

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Nookie1986 [14]

1. What is an equation of a line, in point-slope form, that passes through (1,-7) and has a slope of -2/3?


Point Slope form y − y1 = m(x − x1)


Y1: -7 x1:1 slope :-2/3


Y-(-7)=-2/3(x-1)

Y+7=-2/3(x-1)


2. What is the equation of a line, in point-slope form, that passes through (-2,-6) and had a slope of 1/3?


Y-(-6)=1/3(x-(-2))


Y+6=1/3(x+2)



3.What is an equation in point-slope form of the line that passes through the points (4,5) and (-3,-1)


SlopeM: =change in y/change in x

M= -1-5/-3-4

M= -6/-7

M=6/7


So now slope:6/7, point (4,5)

Y-y1=m(x-x1)

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6 0
3 years ago
Please help on these two​
jeyben [28]

Answer:

For your first problem you want to see what all the sides would equal

You would have to combine them all into one big equation

5x-7+3x+1+4x=30 (now you want to combine like terms)

12x-7+1=30 (combined the x's together)

12x-6=30 (added -7 and 1)

12x=36 (added 6 to each side)

x=3 (divided 12 to each side)

Now you wanna plug 4 in for x for each side to find out the largest to smallest

AB=5(3)-7= 8

BC=3(3)+1= 10

AC=4(3)= 12

So in order from smallest to largest would be angle C, B, A because

Angle C is the smallest angle because the sides AC and BC are the longest so they form the smallest angle

Then it would be angle A being the largest because the smallest sides in length AB and BC make up the biggest angle

The next problem would be that in order for it to have to be a triangle the two smallest sides needs to add up higher than the third side so

11, 11, 24, 11+11=22, which is less than 24 so not this one

18,12,9, 9+12=21 which is greater that 18 so this one would be a triangle

9,10,19, 9+10=19 which 19 isn't greater than 19 so this one is not a triangle

4,7,23, 4+7=11 which is less than 23, so this one is also not a triangle

So your answer would be 18cm,12cm,9cm

8 0
3 years ago
Using the exchange rate £1 = $1.34, calculate how many £ are in $7.25. Give your answer rounded to 2 dp.
ipn [44]

Answer:

£5.41

Step-by-step explanation:

7.25/1.34 = 5.41044...

Round = 5.41

6 0
3 years ago
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A. 113 because vertical angles are congruent.
8 0
3 years ago
A stadium has 49,000 seats. Seats sell for $25 in Section A, $20 in Section B,
Stells [14]

Answer:

A B C

Step-by-step explanation:

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5 0
3 years ago
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