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4 years ago

Help ASAP Need steps for either one

Mathematics

1 answer:

weeeeeb [17]4 years ago

4 0

4.3 + -1.4p + -9.8 = 9.7
-5.5 -14p = 9.7
+5.5 +5.5
-14p = 15.2
-14 -14
p = -1.085

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how much interest is earned on a principal of $575 invested at an interest rate of 7% compounded annually for nine years?

kogti [31]

Answer:

$482.11 in interest

Step-by-step explanation:

Use the compound amount formula. Calculate the compound amount and then subtract the principle to find the amount of interest earned.

A = P(1 + r)^t, where r is the interest rate as a decimal fraction

This becomes:

A = $575(1 + 0.07)^9, or A = $1057.11.

Subtracting the principal: A - P: $1057.11 - $575 = $402.11

3 0

3 years ago

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Plot the line for the equation on the graph. y−5=32(x−2)

Tom [10]

Y-5=32(x-2)
Y-5=32x-64
Y=32x-59
Y=-59
X=32
So that would give you
Y intercept: -59
And slope: 32
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6 0

3 years ago

Brainliest is given to the correct answer!

OlgaM077 [116]

Answer:

a. $p = 2\pi r + 8r$

b. $r = \frac{p}{2\pi + 8}$

Step-by-step explanation:

a. Radius of semicircle (r) = r

Diameter of semicircle (d) = 2r

Length of rectangle (l) = 2*diameter of semicircle = 2*2r = 4r

Distance around the track (p) = circumference of circle + 2(l)

Note: the two semicircles of the track = 1 full circle

Circumference of full circle = πd = π*2r = 2πr

Distance around the track:

p = 2πr + 2(4r)

p = 2πr + 8r

b. Rewriting the formula to make radius, r, the subject of the formula in terms of distance around the track.

$p = 2\pi r + 8r$

Factor out r

$p = r(2\pi + 8)$

Divide both sides by (2π + 8)

$\frac{p}{2\pi + 8} = \frac{r(2\pi + 8)}{2\pi + 8}$

$\frac{p}{2\pi + 8} = r$

$r = \frac{p}{2\pi + 8}$

6 0

4 years ago

The length of a rectangle is 5cm more than width. Find expression fo the perimeter of the rectangle in terms of the w

galina1969 [7]

Answer:

Perimeter $=4w+10$

Step-by-step explanation:

Let $w$ = width of the rectangle.

From the information "length of a rectangle is 5cm more than width", we can write:

Length = $w+5$

- - - -

Perimeter $= 2l+2w$ (formula for the perimeter of a rectangle)

$=2(w+5)+2w$

$=2w+10 + 2w$

$=4w+10$

∴ The expression of the perimeter of the rectangle in terms of $w$ is $4w+10$ .

Hope this helps :)

8 0

3 years ago

HELP PLZZZ<br> im in confusion

Alborosie

Answer:

i think its b but im not sure

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers