3 years ago

(4x-7) x (10x^2+4x-2) = Please Help

Mathematics

1 answer:

vampirchik [111]3 years ago

7 0

10x^2+4x-7

Step-by-step explanation:

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2 years ago

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Answer:

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3 years ago

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Laurie buys four bags of candy with 10 pieces of candy in each bag. Her father then gives her 5 more pieces of candy. Laurie wan

lina2011 [118]

Answer:

3 pieces left over

Step-by-step explanation:

Laurie has a total of 45 pieces of candy, if she has 6 friends, you can do

$45 \div 6 = 7.5$

each friend can get 7 pieces of candy

$7 \times 6 = 42$

if each friend gets 7 pieces, you have used 42 pieces out of you total 45

$45 - 42 = 3$

which leaves 3 pieces left over.

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3 years ago

What does<br> 9 x 2/5 equal

fomenos

Answer:

3 3/5

Step-by-step explanation:

9/1*2/5=18/5

=3 3/5

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3 years ago

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A bag contains 42 red marbles, 6 white marbles, and 8 gray marbles. You randomly pick out a marble, record its color, and put it

Elanso [62]

For any single draw,

$\mathbb P(\text{white})=\dfrac6{42+6+8}=\dfrac6{56}$
$\mathbb P(\text{gray})=\dfrac8{42+6+8}=\dfrac8{56}$

Drawing a white marble or a gray marble are disjoint events; only one of them can happen. So

$\mathbb P(\text{white or gray})=\mathbb P(\text{white})+\mathbb P(\text{gray})-\underbrace{\mathbb P(\text{white and gray})}_0$
$\mathbb P(\text{white or gray})=\dfrac6{56}+\dfrac8{56}=\dfrac{14}{56}$

Out of 224 draws, you should expect $\dfrac{14}{56}\times224=56$ of the marbles to be either white or gray.

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3 years ago

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