3 years ago

What is the answer to this problem?

Mathematics

1 answer:

leonid [27]3 years ago

5 0

Answer:

$\frac{7}{9}$

Step-by-step explanation:

If you add a number that is negative, you are basically subtracting it.

This means that

$\frac{8}{9}+\left(-\frac{1}{9}\right)=\frac{8}{9}-\frac{1}{9}$

Since they both have the same denominator, you can easily subtract the fractions: $\frac{8-1}{9}=\frac{7}{9}$

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Atilio solved 3 x 5 x 2 using the equations below.

Diano4ka-milaya [45]

Answer:

3×5×2

= 3×(5×2)

= 3×10

= 30

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2 years ago

How much of an alloy that is 30% copper should be mixed with 50 ounces of an alloy that is 60% copper in order to get an alloy t

kompoz [17]

Answer: 180 i think

Step-by-step explanation: .5*200+.2X=.3(200+X)

100+.2X=60+.3X

.2X-.3X=60-100

-.1X=-40

X=-40/-.1

X=400 OUNCES OF 20% COPPER.

PROOF

.5*200+.2*400=.3(200+400)

100+80=.3*600

100+80=180

180=180

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3 years ago

Read 2 more answers

A coin is tossed and a die is rolled simultaneously. What is the probability of getting a tail and a number less than 3?

Reil [10]

Answer: 1/6

Step-by-step explanation:

Probability of getting heads or tail is:

P (H) = P(T) = 1/2

The probability of getting any number on the die is:

P (1) = P (2) = P(3) = P (4) = P (5) = P (6) = 1/6

The probability of getting a tail on the coin and a number less than 3 on the die is:

$P($Tails and a number less than 3$)=P($Tails$) \times P$(A number less than 3)$$\begin{aligned}&=\frac{1}{2} \times[P(1)+P(2)] \\&=\frac{1}{2} \times\left[\frac{1}{6}+\frac{1}{6}\right] \\&=\frac{1}{6}\end{aligned}$$$

Therefore the required of getting tails and a number less than 3 is 1/6

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A zoo has 2 male lions. One sixth of the liis are male lions. How many lions are at the zoo

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12 lions are at the zoo

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What is the volume of the square pyramid if its height is 9 and it`s square base has side lengths of 7?

Nimfa-mama [501]

Answer:

maybe 7

Step-by-step explanation:

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3 years ago