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3 years ago

Simplify (3x2 − 2) + (5x2 + 5x − 1). (2 points)

Mathematics

1 answer:

olga55 [171]3 years ago

8 0

Answer:

Step-by-step explanation:

well the anser has to equal 9 if you solved the question correctly BUT the other questions have to equal 9 so the first one is like this

(3*2-2)+(5*2+5*-1)

= (6-2)+(5*2+5*-1)

= (4)+(5*2+5*-1)

= 4+(5*2+5*-1)

= 4+(10+5*-1)

= 4+(10+-5)

= 4+(10-5)

= 4+(5)

= 4+5

= 9

Now the answers A is not it because

8*2+5*-3

= 16+5*-3

= 16+-15

= 16-15

= 1

B isnt it because

8*2+5*-1

= 16+5*-1

= 16+-5

= 16-5

= 11

And C isnt it because

2*2+5*-3

= 4+5*-3

= 4+-15

= 4-15

= -11

So that leaves D and this is how it is correct

= 8*2+7*-1

= 16+7*-1

= 16+-7

= 16-7

= 9

Hope this helps! Sorry I took so long

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tatyana61 [14]

Answer: This would fill 4 and 4/9 containers.

Explanation:

Since we have given that

Quantity of walnuts in a container is given by

$6\frac{2}{3}=\frac{20}{3}\ pounds$

Quantity of walnuts which divided equally into containers is given by

$1\frac{1}{2}=\frac{3}{2}\ pounds$

Now, number of containers they would fill is given by

$\frac{\frac{20}{3}}{\frac{3}{2}}=\frac{20\times 2}{3\times 3}=\frac{40}{9}$

When we change it into mixed fractions we get,

$\frac{40}{9}=4\frac{4}{9}$

So, blank will be filled with '4'.

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3 years ago

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Jobisdone [24]

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3 years ago

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Paul [167]

Answer:

Step-by-step explanation:

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3 years ago

In Youngtown the population reach 4420 people in 1993 in 1998 there were 5600 residents what was toe population in the year 2000

dybincka [34]

So, let's find the rates:
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3 years ago

Help me with these 3 questions, please

Zina [86]

Answer:

1. x = -4y ---> y = (-1/4)x

slope = -1/4. y-intercept = (0,0)

2. y = -2x + 4

3. y = (1/3)x - 1

Step-by-step explanation:

1. Re-write your equation so that x is on the right and y is on the left:

x = -4y ---> y = (-1/4)x

slope = -1/4. y-intercept = (0,0)

2. y-intercept = (0,4) ----> P1

x-intercrpt = (2,0) ----> P2

slope m = (y2 - y1) / (x2 - x1)

= (0 - 4)/(2 - 0)

= -2

therefore, y - y1 = mx - x1 ---> y - 4 = -2x

or y = -2x + 4

3. y-intercept = (0,-1)

x-intercept = (3,0)

m = (0 - (-1)) / (3 -0) = 1/3

y - (-1) = (1/3)x - 0 ---> y = (1/3)x - 1

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3 years ago