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3 years ago

Jamey says she only has 30% of her book to go before she finishes it. She has read 147 pages so far.

1 answer:

6 0

Set up a proportion
30 done/100 total = 147 so far/x total
cross multiply
30x = 14700
divide by 30
x = 490
the book is 490 pages long

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Determine the slope and y-intercept of the line.<br> y = -69x - 346

Tpy6a [65]

Answer:

Slope: -69

Y-intercept: -346 or (0, -346)

Step-by-step explanation:

y = mx + b

m = slope

b = y-intercept

y = -69x - 346

m = -69

b = -346

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2 years ago

A plumber receives $72 an hour. how much is she paid for 20 hours of work?

jeka57 [31]

Answer:

$1440

Step-by-step explanation:

$72/hour

For 20 hours, she receives

20 hours × $72/hour = $1440

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2 years ago

Read 2 more answers

A rectangle has a length that is 5 inches greater than its width, and its area is 104 square inches. The equation (x + 5)x = 104

Art [367]

Answer:

The answer is 8.

Step-by-step explanation:

We need to use the quadratic formula, that is ax2+bx+c=0

Where

$x=\frac{-b +/- \sqrt{b^{2}-4*a*c } }{2a}$

For the given equation x2+5x-104=0 we have

a=1, b=5, c= -104

If you solve that, we will have x=-13. x=8, two answers,

The first one, by being negative does not have physical sense (there are no negatives quantities when you measure the length of something)

So we use the anwser x=8

7 0

3 years ago

Read 2 more answers

Your quiz grades are a 63% and an 87% what's ur grade average

Fantom [35]

Answer:

75 is your grade average.

Step-by-step explanation:

To find the average you add up all the numbers you have and then divide the sum of those numbers by the number of all the numbers you have. (I hope that made sense).

+ 87

_____

150

150/2 = 75%

6 0

2 years ago

The M virus has a diameter of 5 x 10^-7meters, while the P virus measures about 2 x 10^-8meters in diameter. A) is the M virus o

Fynjy0 [20]

Answer:

(A) The M virus is larger than the P virus in diameter

(B) Diameter of virus M is 25 times the diameter of virus P

Step-by-step explanation:

Notice that the values given are in the so called "scientific notation", and which involves in this case negative exponents for the multiplier 10.

So we can write these values in decimal form for easier comparison of which one is he largest one:

Diameter of M virus = $5\,*\,10^{-7}\,m = 0.0000005\,\,m$

Diameter of P virus = $2\,*\,10^{-8}\,m = 0.00000002\,\,m$

Which clearly shows that virus M is larger than virus P in diameter

The quotient between diameters will give us the answer to how many times larger virus' M diameter is:

$\frac{M}{P} =\frac{0.0000005}{0.00000002} \\\frac{M}{P} =25$

8 0

3 years ago