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3 years ago

Please show all work :)

Mathematics

1 answer:

yulyashka [42]3 years ago

7 0

I might be wrong but I think the answer would be -x+2x+6 as a simplified version because if you use the equation (x+4•x+3)-3x(x+1)=a (or any letter you choose), you will get 3x+x^2+12+4x-3x-3x^2=y. Then, you can combine like terms:
4x-2x+12=a

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If the estimate of expected population proportion having a desired characteristic based on intuition is 60 percent and the accep

Anika [276]

Answer:

Step-by-step explanation:

Our values are:

N = 100,000 (We assume it)

Proportion is p = 0.6

Margin of error (E) = 0.05

confidence-level (cl) = 0.95

Z-value = 1.96

We need to approach through Proportion,

$n=\frac{ (z_2 * p *q) + ME_2}{ME_2 + z_2 * p * q / N}$

Substituting,

$n = \frac{(1.962*0.6*0.4)+0.052}{0.052 + \frac{1.962 * 0.6 * 0.4}{100000}}$

$n= \frac{(3.841 * 0.24)+0.0025}{0.0025+\frac{3.841*0.24}{100000}}$

$n =\frac{ 0.9243}{0.002509}$

$n= 368$

3 0

3 years ago

What is the mixed number for 4.8 in simplest form

ollegr [7]

The mixed number for 4.8 is 4 8/10

For simplest form, divide 8/10 by 2 to get 4/5

Your final answer would be 4 4/5

8 0

4 years ago

Plsss help i’ll give brainliest if you give a correct answer

posledela

Answer:

<em>48 drops of red food coloring</em>

Step-by-step explanation:

32/8 = 4

SO she uses 4x as much yellow food coloring meaning you need to use 4x as much red food coloring.

4 x 12 = 48 so she needs to add 48 drops of red food coloring

3 0

3 years ago

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Find the volume of a sphere if its radius is 6 cm. Use estimation for pi.

Viefleur [7K]

Volume is calculated by multiplying (3/4)pi by the radius cubed

6 0

3 years ago

What is the value of x , if y = 2<br>in the given equation ;<br><br>5x + 2y = 9

Strike441 [17]

<h3><u>Explanation</u></h3>

Given the equation.

$5x + 2y = 9$

with given condition where y = 2.

Therefore, substitute the value of y in the equation.

$5x + 2(2) = 9 \\ 5x + 4 = 9$

Solve the equation for x-term.

$5x = 9 - 4 \\ 5x = 5 \\ x = \frac{5}{5} \longrightarrow \frac{1}{1} \\ x = 1$

Check the answer by substituting both x-value and given y-value in the equation.

$5x + 2y = 9 \\ 5(1) + 2(2) = 9 \\ 5 + 4 = 9 \\ 9 = 9 \longrightarrow \bf{true} \: \green{ \checkmark}$

Hence, the value of x is 1.

<h3><u>Answer</u></h3>

<u> $\large{x = 1}$ </u>

3 0

3 years ago

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