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3 years ago

Twice a number is one WRITER

Mathematics

1 answer:

mylen [45]3 years ago

6 0

Answer:

0.5

Step-by-step explanation:

1) Let the number be X

2) Set up a mathematical equation (convert from word problem)

2X = 1

3) Solve for X

X = 1/2

4) Divide 1 by 2

X = 0.5

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Which number is a rational number? A. B. C. D.

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Answer:

Step-by-step explanation:

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3 years ago

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If x = 9 and y = -3, evaluate the following expression: = 6x - 8y

masha68 [24]

Answer: 78

Step-by-step explanation:

Step 1:

Substitute the variables in:

6(9) - 8(-3)

Step 2:

Multiply to get rid of the parentheses:

54 - -24 = 54 + 24 (the two negatives cancel out)

Step 3:

Add, and then you're done:

54 + 24 = 78

hope this helps :)

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2 years ago

Does the point (4, 0) satisfy the equation y = x2?

andre [41]

Y=x^2
substitute the values into the original equation
0=4^2
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No it does not satisfy the equation because 0 does not equal to 16

8 0

3 years ago

Helpp pleasee solve for x

Lynna [10]

It's a right angle, which is 90°, 90°-77°=13°

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3 years ago

4. James and Terry open a savings account that has a 2.75% annual interest rate, compounded monthly. They

Zinaida [17]

$ 159,744.59 will be in the account after 20 years.

Answer: Option A

<u>Step-by-step explanation:</u>

Need to find out the amount present in the account after 20 years. The formula to find out the future value is,

$\text {Future value}=p \times\left(\frac{\left(1+\frac{r}{n}\right)^{n t}-1}{\frac{r}{n}}\right)$

Here

p : amount deposit monthly =$500

r : rate of interest = $\frac{2.75}{100}$ = 0.0275

n : 12(compound monthly)

t : time =20

By substituting all the given datas in the above equation, we get

$\text { Future value }=500 \times\left(\frac{\left(1+\frac{0.0275}{12}\right)^{240}-1}{\frac{0.0275}{12}}\right)$

$\text {Future value}=500 \times\left(\frac{(1+0.002291)^{240}-1}{0.002291}\right)=500 \times\left(\frac{(1.732)-1}{0.002291}\right)$

$\text { Future value }=500 \times\left(\frac{0.732}{0.002291}\right)=500 \times 319.511=\$ 159,744.99$

3 0

3 years ago