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2 years ago

Use the quadratic formula to solve 2x^2 -1 = 7x, and then verify your answer by graphing

Mathematics

2 answers:

Bingel [31]2 years ago

8 0

Answer:

Step-by-step explanation:

Edge 2021

Nimfa-mama [501]2 years ago

7 0

Answer:

7+- root 57 / 4

d. 7+root 57/4 , 7-root 57/4 on edg

Step-by-step explanation:

got it right :)

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Find five solutions for the linear equations 2x+y=5, and plot the solutions as points on a coordinate plane. Did i do this right

beks73 [17]

For the second row i think it should be 2 + y = 5 because 2 x 1 equals 2

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3 years ago

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Point B is collinear with A and C and partitions AC in a 3:4 ratio. B is located at (4,1) and C is located at (12,5). Find the c

GrogVix [38]

Answer:

$A(-\frac{20}{3} ,-\frac{13}{3})$

Step-by-step explanation:

Point B partitions AC in a 3:4 ratio.

B is located at (4,1) and C is located at (12,5).

Let $(x_1,y_1)$ be the coordinates of A.

Then $(\frac{mx_1+nx_2}{m+n}, \frac{my_1+ny_2}{m+n})=(4,1)$

But m:n=3:4 implies m=3 and n=4 and $(x_2=12,y_2=5)$

$(\frac{3x_1+4*12}{3+4}, \frac{3y_1+4*5}{3+4})=(4,1)$

$(\frac{3x_1+48}{7}, \frac{3y_1+20}{7})=(4,1)$

$\frac{3x_1+48}{7}=4, \frac{3y_1+20}{7}=1$

$3x_1+48=28, 3y_1+20=7$

$3x_1=-20, 3y_1=-13$

$x_1=-\frac{20}{3} , y_1=-\frac{13}{3}$

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3 years ago

When 100 engines are shipped, all of them are free of defects.

Sonbull [250]

C. None of the engines are defective.

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3 years ago

During practice, the Northwood football team drinks water from a cylindrical cooler that has a radius of 6 inches and a height o

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Step-by-step explanation:

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2 years ago

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mash [69]

Answer:

I'm really sorry I can't tell you the answer because you have to measure the angle by yourself using a protractor. But I gave you information about types of angles if you got the degree of angles ( e.g 90 degrees). Hope it helped.

Step-by-step explanation:

acute angle-an angle between 0 and 90 degrees

right angle-an 90 degree angle

obtuse angle-an angle between 90 and 180 degrees

straight angle-a 180 degree angle

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3 years ago

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Use the quadratic formula to solve 2x^2 -1 = 7x, and then verify your answer by graphing​

Use the quadratic formula to solve 2x^2 -1 = 7x, and then verify your answer by graphing