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marshall27 [118]
3 years ago
12

If a=5x^2+3x-7 and b=-3x^2-7x+5 find b-a

Mathematics
1 answer:
uranmaximum [27]3 years ago
3 0

Answer:

-8x^2-10x+12

Step-by-step explanation:

first set up the problem:

(-3x^2-7x+5)-(5x^2+3x-7)

Since you are subtracting you need to distribute the (-) sign:

(-3x^2‐7x+5)(-5x^2-3x+7)

Now just combine like terms

-3x^2+(-5x^2= -8x^2

(-7x+(-3x= -10x

5+7= 12

set answer in standard form:

-8x^2-10x+12

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irga5000 [103]

Answer:Twin Bed – $60.48

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Step-by-step explanation:

This gives us a total of 439.59

3 0
3 years ago
Jack has some marbles. He has ten more red marbles than blue marbles. He has fewer yellow marbles than blue marbles.
kap26 [50]

Answer:

<u>Jack has at least 15 marbles: 12 red, 2 blue and 1 yellow.</u>

Step-by-step explanation:

1. Let's review the information given to us to solve the problem correctly:

Number of red marbles = 10 more than blue marbles

Number of yellow marbles fewer than blue marbles

2. How many of each color marble could Jack have?

r = Number of red marbles

b = Number of blue marbles

y = Number of yellow marbles

r = b + 10

y < b

If y = 1, then b ≥ 2, and r = b + 10,

fulfilling the three conditions, we have:

<u>y = 1, b = 2, and r = 12</u>

5 0
3 years ago
Robert earns $300 every week. What equation show the relationship between salary per week (s), number of weeks worked (w),and to
amm1812

Answer:

sw=t

Step-by-step explanation:

300 times the number of weeks,equals the total income

5 0
3 years ago
Write the place and Value of Each Number
professor190 [17]

Answer:

C

Step-by-step explanation:

3 0
3 years ago
Write the equation of the line, in point-slope form. Identify the point, Use the box provided or the upload option to submit all
Vlada [557]
Point slope: y - y1 = m(x - x1), m is the slope

first picture

points (-4,-1) and (3,-3)
the slope between these points is

slope = (-3 - 1)/( 3 - (-4) ) = -2/7

if (x1, y1) = (-4, -1), then the slope-point form is

y + 1 = -2/7(x + 4)

___________

second picture (horizontal line)

from the graph, the slope is 0 because there is no rise for a horizontal line.
if (x1, y1) = (-2, 1), then the point slope form is

y - 1 = 0(x + 2)

_____________

third picture

from the graph, we have points (-2,2) and (2,-2) on the line. the slope is

slope = (-2 - 2)/(2 - (-2) ) = -1

if (x1, y1) = (-2,2), then point slope form is

y - 2 = -1(x + 2)

______________

fourth picture

if points (-2,-1) and (2,1) are on the graph, then slope is

slope = (1 - (-1) ) / (2 - (-2) ) = 1/2

with (x1, y1) = (-2,-1), the point slope form is

y + 1 = 1/2(x + 2)

_______________

fifth picture

we have points (-1,-2) and (1,2). the slope is

slope = (2 - (-2) ) / (1 - (-1) ) = 2

with (x1, y1) = (1,2), the point slope form is

y - 2 = 2(x - 1)
8 0
3 years ago
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