3 years ago

Solve by factoring

Mathematics

2 answers:

musickatia [10]3 years ago

6 0

Answer:

factoring (2x−1)(2x+5)

simplify =4x2+8x−5

Step-by-step explanation:

aniked [119]3 years ago

3 0

Answer:

D.) 5/2, -1/2

Step-by-step explanation:

I hope this helps you :)

-KeairaDickson

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larisa [96]

Answer:

third graph

Step-by-step explanation:

We represent the above information in a two way frequency table.

Have Snowboarded Never Snawboarded Total

Skateboard 35 64 99

No Skateboard 13 147 160

Total 48 211 259

Therefore, the third graph is the correct answer.

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Emilia added 2 1⁄8 cups of brown sugar to the cookie dough and 1 2⁄8 cups of white sugar to the dough. How much more brown sugar

alexandr1967 [171]

2 1/8 - 1 2/8 = 7/8 cups more brown sugar.

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3 years ago

Which ordered pair in the form (a, b) is a solution of this equation?

Evgen [1.6K]

3a - 4b = 21

check (-2 , -3)

3(-2) -4(-3) =21

-6 +12 = 21

6 does not = 21 so NO

check (0 , 7)

3(0) -4(7) =21

0-28=21

-28 does not equal 21 so NO

check (-3 , -2)

3(-3) -4(-2) =21

-9 +8 = 21

1 does not = 21 so NO

check (7 , 0)

3(7) -4(0) =21

21 = 21

Choice D

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4 years ago

Solve for the indicated variable: ⅖(z + 1) = y for z.

sweet [91]

Answer:

z = 5/2y -1

Step-by-step explanation:

We observe that z has ...

1 added
the sum multiplied by 2/5

To solve for z, we undo these operations in reverse order.

$\dfrac{2}{5}(z+1)=y\qquad\text{given}\\\\z+1=\dfrac{5}{2}y\qquad\text{multiply by 5/2}\\\\\boxed{z=\dfrac{5}{2}y-1}\qquad\text{subtract 1}$

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Paul [167]

The answer is 9
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4^2 = 16
16-7 = 9

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