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3 years ago

0.25x-8=16 what value of x makes the equation true?

Mathematics

1 answer:

prohojiy [21]3 years ago

8 0

0.25x-8=16 add 8 to both sides. you get 0.25x=8. divide by .25 on each side x=32

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A gourment shop wants to mix coffe beans that cost $3.00 per pound with coffe beans that cost $4.25 per pound to create 25 pound

guajiro [1.7K]

If the gourmet shopkeeper mix 15 pounds of coffee beans which costs 3.0$ per pound with 10 pounds of coffee beans costing 4.25$ per pound.
The mixture of 25 pounds will cost 3.5$ per pound.

It can be found using
3*x + 4.25*(25 -x) = 25*3.50

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2 years ago

X²-y², x²+xy and x² + 2xy + y²<br> plz fast full formula givee

Scorpion4ik [409]

Answer:

Step-by-step explanation:

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2 years ago

Fred is a new student who just joined our class. Fred needs help. Please explain to Fred how he can determine which numbers are

babymother [125]

Answer:

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Step-by-step explanation:

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2 years ago

Which equation describes the line that passes through the points (-4, 19) and (2, -1)

dangina [55]

Answer:

y=-5/2x+4

Step-by-step explanation:

find the slope by using y2-y1/x2-x1

-1-19/2-(-4)

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-20/8

simplify

-5/2

use slope-intercept form, y=mx+b

since we know the slope, find b

plug in one of the ordered pairs into the equation

-1=(-5/2)(2)+b

simplify

-1= -10/2+b

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add 5 to both sides

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8 0

2 years ago

Read 2 more answers

Which of the following are solutions to the equation below?

Natasha2012 [34]

Both A and C would be solutions to the equation.

In order to solve for this you must first get the equation equal to 0.

2x^2+5x+8=6 ----> subtract 6 from both sides
2x^2 + 5x + 2 = 0

Now knowing this we can use the coefficients of each one in descending order of power as a, b and c.

a = 2 (because it is the coefficient to x^2)
b = 5 (because it is the coefficient to x)
c = 2 (because it is the end number)

Now we can plug these values into the quadratic equation.

$\frac{-b +/- \sqrt{b^{2} - 4ac } }{2a}$

$\frac{-5 +/- \sqrt{5^{2} - 4(2)(2) } }{2(2)}$

$\frac{-5 +/- \sqrt{9} }{4}$

$\frac{-5 +/- 3 }{4}$

$\frac{-5 + 3 }{4}$ or -1/2 for the first answer

$\frac{-5 - 3 }{4}$ or -2 for the second answer

5 0

2 years ago