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3 years ago

Is the number 121 a perfect square? Explain why or why not.

2 answers:

8 0

Perfect Square: A number made by squaring a whole number.

Whole number: Positive numbers, including zero, without any decimal or fractional parts.

11 ^ 2 = 11 × 11

11 × 11 = 121

Rus_ich [418]3 years ago

5 0

Yes it is
A square number is when you can times a whole number by itself

11 times 11 is 121

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Mr. Ramos invests $500 at a simple interest rate of 6%. How much interest will he earn in six months?

s2008m [1.1K]

Hope this helps. Answer will be on the image.

6 0

4 years ago

What is the solution to y = 2x + 3 for the replacement set x = {1.3}?

storchak [24]

The solution is

y=5.6

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3 years ago

Bo has $500 in his savings account. He plans to add $150 to his savings account every month. Recently, he purchased a tractor to

MariettaO [177]

Answer:

A. $2,000

Step-by-step explanation:

Assuming that the money in the savings account will be used to pay off for tractor.

let the number of months be m

Savings after m months will be 500+ 150m

After m months the installments paid will 200m

To find the months it will take to pay for the tractor in m months, savings and the installments will be the price of the tractor. As an equation it be represented as below:

500+150m +200m = 4000

150m + 200m = 4000-500 (grouping like terms)

350m = 3500 (Making m the subject of the formula)

350m/350 = 3500/350

m = 10

Substituting m into the equation of saving after m months

Savings after m months will be 500+ 150m

Savings after m months will be 500 + 150(10)

Savings after m months will be 500 + 1500

Savings after m months will be $2000

7 0

4 years ago

Read 2 more answers

If (sin(()−1))p =2cos(()−1)q , show that p^2 =4q^2 (1− q^2) ?.

Papessa [141]

Likely the equation is

$\sin^{-1}p=2\cos^{-1}q$

For either side to be defined, we require $|p|\le1$ and $|q|\le1$ . Under these conditions, we can take

$\sin(\sin^{1}p)=\sin(2\cos^{-1}q)$
$\implies p=2\sin(\cos^{-1}q)\cos(\cos^{-1}q)$
$\implies p=2q\sin(\cos^{-1}q)$
$\implies p=2q\sqrt{1-q^2}$
$\implies p^2=4q^2(1-q^2)$

as required.

8 0

4 years ago

The sum of three numbers is 113 . The second number is 3 times the third. The first number is 7 less than the third . What are t

OLga [1]

Number 1 = 17
number 2 = 72
number 3 = 24

work:

the three numbers are symbolized as x, y, and z

x + y + z = 113

number 2 (y) is 3 times the third number (z) so

y = 3z

so x + 3z + z = 113

the first number (x) is 7 less than than the third number (z) so

x = z - 7

so z -7 + 3z + z = 113

5z - 7 = 113
5z = 120

z = 24

x = 17
y = 72

Hope this helped :)

8 0

3 years ago