PLEASE HELP!! 20 POINTS

1 answer:

6 0

The answer to the first expression is
-21b + 7bc or (-7b * 3) + (7b * 6)
the answer to the second expression is the second and third option

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I need help on 12 please :)

alisha [4.7K]

Answer:

the answer is 10 to the 5th power

Step-by-step explanation:

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3 years ago

What is the discriminante of 9x^2 + 2 = 10?

stepladder [879]

Answer:

Step-by-step explanation:

Use the formula for the discriminant.

$b^2-4ac$

$(-10)^2-4(9)(2)$

$100-72$

$28$

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4 years ago

What is 471 divided by 5?

torisob [31]

471/5=94.2

hope that helps!!

8 0

3 years ago

Read 2 more answers

A sporting goods store sells sets of golf clubs with steel shafts fo $309. Sets of golf clubs with graphite shaftscost $489. Las

OLga [1]

309x+489(11-x)=4299
Solve for x
X=6 for 309

11-6=5 for 489

7 0

3 years ago

Ralph bought a dozen widgets and it cost $30. how much will 80 widgets cost ?

Lesechka [4]

A dozen = 12

12 widgets = $30
80 widgets = $x

$12x = 30 \times 80 \\ 12x = 2400 \\ x = 200$

Answer : 80 widgets would cost $200.

Hope this helps. - M

6 0

3 years ago