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3 years ago

a room measures 8 2/3 yards by 7 3/4 yards. How many square yards of carpeting must be purchased to carpet the room?

Mathematics

1 answer:

Nookie1986 [14]3 years ago

7 0

Answer: 40 square yards

Step-by-step explanation: hope this helped! :)

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5) Paul invests $3,092 in a savings account

Mkey [24]

Answer:

R = 5% per year

Step-by-step explanation:

Solving for rate r as a decimal

r = n[(A/P)^1/nt - 1]

r = 4 × [(4,835.71/3,092.00)^1/(4)(9) - 1]

r = 0.05

Then convert r to R as a percentage

R = r * 100

R = 0.05 * 100

R = 5%/year

Summary:

The interest rate required to get a total amount of $4,835.71 from compound interest on a principal of $3,092.00 compounded 4 times per year over 9 years is 5% per year.

3 0

3 years ago

Mr. Smith wants to order pizza for the Honor Roll party. He is going to buy one box of pepperoni pizza for $8.25 and c boxes of

Afina-wow [57]

Answer:

Its A

Step-by-step explanation:

Because it is. i took the test :)

5 0

3 years ago

1.09 g/mL to lbs/gal

Dafna1 [17]

1 g/mL ---------- 8.3454 lbs
1.09 g/mL ------ lbs

Ibs = 1.09 x 8.3454 / 1

Ibs = 9.09 / 1

= 9.09 Ibs

hope this heps!

4 0

3 years ago

Prove, using the second derivative, that the general quadratic y= ax^2+bx+c, is:

lozanna [386]

There are three things you have to know:

A function is convex when its second derivative $f''(x)>0$
A function is concave when it second derivative $f''(x)$
The derivative of a power, $x^n$ , is $nx^{n-1}$

So, the first derivative is

$y'=2ax+b$

and the second derivative is

$y''=2a$

This implies that the second derivative of a parabola is constant, and of course that 2 doesn't change the sign of $a$ .

3 0

3 years ago

Math help please question in the picture

Kazeer [188]

This took me a while but I'm pretty sure the answer is
$y = - \frac{1}{3} x - 1$
I had to review perpendicular bisectors but yeah it has to do with the midpoint and point slope formula

7 0

3 years ago