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Gwar [14]
3 years ago
5

Loll yeaaa i need help again

Mathematics
1 answer:
Keith_Richards [23]3 years ago
8 0

Answer:

x = -\frac{5}{2}y + 4

Step-by-step explanation:

2x+5y=8, so subtract 5y from both sides to get 2x=8-5y. Then divide both sides by two to get \boxed{x = -\frac{5}{2}y + 4}

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Factor -7x3 + 21x2 + 3x - 9 by grouping. What is the resulting expression?
irga5000 [103]

Answer:

(x-3)(-7x^2+3) is the resulting expression after grouping

Step-by-step explanation:

Given:

-7x^3+21x^2+3x-9

Now taking common -7x^2 from 1st 2 numbers and and 3 common from last we get

-7x^2(x-3)+3(x-3)

Now taking x-3 common from both numbers we get

(x-3)(-7x^2+3) which is the final equation after grouping

8 0
4 years ago
What is the volume of this prism?
Mars2501 [29]

Answer:

The answer is 42ft ^3 (42 ft units cubed)

Step-by-step explanation:

To find the volume for a rectangular prism, first of all you need to know the formula. The formula is V=lwh (volume= length x width x height)

The formmula for this problem is V= 7ft x 2ft x 3ft= 42ft

3 0
3 years ago
Samantha works in a chocolate factory at a conveyor belt that is 18 inches wide and moves large amounts of chocolate to packagin
MArishka [77]

Answer:

1.92 chocolates per in²

Step-by-step explanation:

Given that:

Dimension of conveyor belt :

6.5 inches long and 18 inches wide (6.5in * 18in)

Area of conveyor belt = 6.5 * 18 = 117 in²

Number of chocolate = 225

Number of chocolates per square inch :

225 / 117

= 1.9230769 chocolates

= 1.92 chocolates per in²

7 0
3 years ago
Denise’s cell phone plan is $29.95 per month plus $0.10 per minutes for every minute over 300 minutes of call time. Denise's cel
VLD [36.1K]

Answer:

<h3>700 minutes</h3>

Step-by-step explanation:

$99.95 - $29.95 = $70.00

Minutes   :   Money

           1   :   $0.10

           ?   :   $70.00

Minutes   :   Money

           1   :   $0.10            

    ×700                            ×700

           ?   :   $70.00

<h3>  =700 minutes</h3>

4 0
4 years ago
Ashlyn is selling boxes of cookies for a fundraiser. If she raised $26 selling eight boxes, how much will she raise if she sells
allochka39001 [22]
She raises thirteen dollars
6 0
3 years ago
Read 2 more answers
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