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goldenfox [79]
2 years ago
11

If equation two is multiplied by -2 and then the equations are added, the result is

Mathematics
1 answer:
LUCKY_DIMON [66]2 years ago
8 0

Answer: Yes, this is true but it can be a different answer.

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Two urns both contain green balls and red balls. Urn I contains 6 green balls and 4 red balls and Urn II contains 8 green balls
34kurt

Presumably, whatever is drawn from Urn I is independent of what is drawn from Urn II. This means

P(\text{red from Urn 1 AND red from Urn 2})=P(\text{red from Urn 1})\cdot P(\text{red from Urn 2})

We have

P(\text{red from Urn 1})=\dfrac4{10}=\dfrac25

P(\text{red from Urn 1})=\dfrac7{15}

so the probability of drawing red balls from both urns is \dfrac25\cdot\dfrac7{15}=\dfrac{14}{75}

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3 years ago
2(4^2+10) ? will mark brainliest
Ilia_Sergeevich [38]
\bf 2(4^2+10)\qquad \mathbb{PEMDAS}\implies 2(16+10)\implies 2(26)\implies 52
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Which of the expressions are equivalent to the one below? Check all that apply.
sdas [7]

Step-by-step explanation:

We need to find an expression that is equivalent to 4×(8+3)

We know that,

4×(8+3) = 4(11) = 44

Option (1).

(4 • 8) + 3 = 32+3 = 35. It is incorrect

Option (2).

(8 + 3) • 4 = (11) 4 = 44. It is correct.

Option (3).

4 • (3 + 8) = 4(11) = 44. It is correct.

Option (4).

4 • 8 + 4 • 3 = 32+12 = 44. It is correct.

Hence, the correct options are (2), (3) and (4).

8 0
2 years ago
Explain how to draw an area model to represent 2x15.
lana [24]
2 which is the height and 15 would be the width.

3 0
3 years ago
Two pumps connected in parallel fail indepen- dently of each other on any given day. The proba- bility that only the older pump
lions [1.4K]

Answer: 0.145

Step-by-step explanation:

Since,

the Probability of the older pump failing P(fail older) = 0.10

The probability of the newer pump failing P(fail newer) = 0.05

Therefore,

The Probability of the older pump not failing P(not fail older) = 1 - 0.1

P(not fail older) = 0.9

Also,

The probability of the newer pump not failing P(not fail newer) = 1 - 0.05 = 0.95

The probability of the pumping system failing = P(not fail older)* P(not fail newer) = 0.9*0.95

P(not fail system)= 0.855

Therefore,

The probability that the pumping system will fail = 1 - P(not fail system) = 1 - 0.855 = 0.145

The probability that the pumping system will fail one day is 0.145

3 0
3 years ago
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