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2 years ago

How do you add integers with different signs?

Mathematics

1 answer:

Svet_ta [14]2 years ago

3 0

Answer:

To add integers with different signs, keep the sign of the number with the largest absolute value and subtract the smallest absolute value from the largest.

Step-by-step explanation:

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Solve for x. a.5, b. c.9 d.10

Liula [17]

Your proportion should look something like this

$\frac{x}{6} = \frac{6}{4}$

After cross multiplication, you should end up with this equation

$4x=36$

After dividing 4 on both sides, you should get that x=9

6 0

3 years ago

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If r(x) = 2x^2 – 5x + 1, find r(x + 2)

quester [9]

Step-by-step explanation:

1 Expand by distributing terms.

rx+r×2

2 Regroup terms.

rx+2r

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2 years ago

Apple juice costs $3.00 after a 40% discount. Which equation would allow you to find the original price of the apple juice. X re

Stells [14]

Answer: 0.4x = 3 is the answer

Step-by-step explanation:

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3 years ago

Consider an urn containing 8 white balls, 7 red balls and 5 black balls.

weqwewe [10]

Answer + Step-by-step explanation:

1) The probability of getting 2 white balls is equal to:

$=\frac{8}{20} \times \frac{7}{19}\\\\= 0.147368421053$

2) the probability of getting 2 white balls is equal to:

$=C^{2}_{5}\times (\frac{8}{20} \times \frac{7}{19}) \times (\frac{12}{18} \times \frac{11}{17} \times \frac{10}{16})\\=0.397316821465$

3) The probability of getting at least 72 white balls is:

$=C^{72}_{150}\times \left( \frac{8}{20} \right)^{72} \times \left( \frac{7}{20} \right)^{78} +C^{73}_{150}\times \left( \frac{8}{20} \right)^{73} \times \left( \frac{7}{20} \right)^{77} + \cdots +C^{149}_{150}\times \left( \frac{8}{20} \right)^{149} \times \left( \frac{7}{20} \right)^{1} +\left( \frac{8}{20} \right)^{150}$

$=\sum^{150}_{k=72} [C^{k}_{150}\times \left( \frac{8}{15} \right)^{k} \times \left( \frac{7}{15} \right)^{150-k}]$

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6 months ago

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Find a ratio that is equivalent to 2:5.

Keith_Richards [23]

Answer:

4:10 hope this helps

Step-by-step explanation:

6 0

2 years ago