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Maslowich
3 years ago
7

Plz help!!!!!!!!!!!!!!! 100 points! any links or wrong answers will be flaged

Mathematics
1 answer:
garik1379 [7]3 years ago
7 0

Answer:

Part A: 431070.9 ergs

Part B: 1.6 x 103mm

Step-by-step explanation

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Which equation matches the graph? points: (0,2) (3,3)
posledela

Answer:

A. y=1/3x+2

Step-by-step explanation:

Use the slope formula and the slope-intercept form to find the slope  m  and y-intercept  b .

Slope:  

1 /3

y-intercept:  

( 0 , 2 )

8 0
3 years ago
Read 2 more answers
3x-y=11<br> 2x+5y=-4<br><br> systems of linear equations using substitution<br> find X and Y
ohaa [14]
The answer is x = 3, y = -2

The system of equations is:
3x - y = 11
2x + 5y = -4
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Rewrite the first equation:
y = 3x - 11
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Substitute y in the second equation and solve x:
2x + 5(3x - 11) = -4
2x + 5 * 3x + 5 * (-11) = -4
2x + 15x - 55 = -4
17x = 55 - 4
17x = 51
x = 51 / 17 
x = 3
_______
Substitute x in the equation: y = 3x - 11
y = 3 * 3 -11
y = 9 - 11
y = -2
3 0
3 years ago
If the cost, C(x), for manufacturing x units of a certain product is given by C(x)=x^2-14x+74, find the number of units manufact
vova2212 [387]
<h2>Steps:</h2>

So for this, since C(x) is the cost, and we are given the cost of $9050, we will plug 9050 into C(x) and solve for x:

9050=x^2-14x+74

So for this, I will be completing the square. Firstly, subtract 74 on both sides of the equation:

8976=x^2-14x

Next, we want to make the right side of the equation a perfect square. To find the constant of this soon-to-be perfect square, you need to divide the x coefficient by 2, square the quotient, then add the result on both sides of the equation. In this case:

-14 ÷ 2 = -7, (-7)² = 49

9025=x^2-14x+49

Next, factor the left side:

9025=(x-7)^2

Next, square root both sides:

\pm\ 95=x-7

Next, add 7 to both sides:

7\pm 95=x

Next, solve the left side twice. Once with the plus symbol, once with the minus symbol:

102,-88=x

<h2>Answer:</h2>

Since we cannot have negative units in this context, <u>at the cost of $9050 you can manufacture 102 units.</u>

8 0
3 years ago
Two fair six sided dice are rolled. What is the probability that the sum of the two dice is 5?
Travka [436]

Answer:

1/12

Step-by-step explanation:

4 0
3 years ago
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Will mark brainliest answer, please answer !!
lana [24]

Answer:

9 + x

Step-by-step explanation:

The area of a rectangle is length times width.

A = lw

We know the area is 81 - x^2 and the width is 9 - x, so plug them in.

81 - x^2 = 9-x * w

81 - x^2 is a difference of squares in the form a^2 - b^2 = (a-b)(a+b), so we know the width must be 9 + x.

Test it to be sure:

(9 + x)(9 - x)

81 + 9x - 9x -x^2 = 81 - x^2

It works!

7 0
3 years ago
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