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4 years ago

Solve for x: (x+4) divided by 2 =7

1 answer:

3 0

First, set up your equation.

_(x+4)_ = 7
2

multiply both sides by 2 to cross out the 2 on the bottom

_(x+4)_ *2 = 7*2
2

x+4 =14

subtract 4 from both sides

x+4= 14
-4 -4

x=10

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You save $25 each week. How long will it take to save $1000?

irina [24]

Answer:

40 weeks

Step-by-step explanation:

1000 divided by 25=40

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3 years ago

A committee of 9 members is voting on a proposal. Each member casts a yea or nay vote. On a random voting basis, what is the pro

dsp73

Answer:

The required probability is $P(x)=\frac{9}{128}$ or $P(x)=0.0703125$ .

Step-by-step explanation:

Consider the provided information.

A committee of 9 members is voting on a proposal. Each member casts a yea or nay vote. On a random voting basis,

The probability of yea or nay vote is equal, = $\frac{1}{2}$

So, we can say that $p=q=\frac{1}{2}$

Use the formula: $P(x)=\binom{n}{x}p^xq^{n-x}$

Where n is the total number of trials, x is the number of successes, p is the probability of getting a success and q is the probability of failure.

We want proposal wins by a vote of 7 to 2, that means the value of x is 7.

Substitute the respective values in the above formula.

$P(x)=\binom{9}{7}(\frac{1}{2})^7(\frac{1}{2})^{9-7}$

$P(x)=\frac{9!}{7!2!}(\frac{1}{2})^7(\frac{1}{2})^{2}$

$P(x)=\frac{8\times9}{2}\times(\frac{1}{2})^9$

$P(x)=\frac{4\times9}{2^9}$

$P(x)=\frac{9}{2^7}$

$P(x)=\frac{9}{128}$ or $P(x)=0.0703125$

Hence, the required probability is $P(x)=\frac{9}{128}$ or $P(x)=0.0703125$ .

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3 years ago

Enter an inequality that represents the graph in the box.

sergejj [24]

Answer:

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Step-by-step explanation:

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4 years ago

Help please...... due today

Dmitry [639]

Answer:

V ≈ 7850

Step-by-step explanation:

V= πr^2h is the formula

so V = 3.14 * 10^2 * 25

V = 3.14 * 2500 = 7850

depending on what decimal you use for pi, your answer will differ

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3 years ago

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Nastasia [14]

2/9 is the smallest because the denominator is the smaller meaning there are more places so in perspective its smallest

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4 years ago