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3 years ago

Need help ASAP will give brainly

Mathematics

1 answer:

prisoha [69]3 years ago

3 0

Answer:

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The number of pages that Rick can write varies directly with the amount of the time that he spends writing. He can write 5 pages

Gnesinka [82]

Step-by-step explanation:

How many pages can Rick write in 8 hours

= 5 pages / 1/4 hour

= 20 pages / hour

= 20 × 8 / 8 hours

= 160 pages / 8 hours

So, Rick can write 160 pages in 8 hours

3 0

3 years ago

Reuben has always dreamed of opening a café by the seaside. He decides he will save to help open the café by depositing money in

castortr0y [4]

Answer:$ 66.5

Step-by-step explanation:

Using ordinary Annuity formula

$FV=\frac{P\times \left [ \left ( 1+r\right )^n-1\right ]}{r}$

FV=future value=$24000

P=monthly payment

r=rate of interest =5.4%

for monthly $r=\frac{5.4}{12}=0.45%$

n=number of payments $=9\times 12=108$

$24000=\frac{P\times \left [ \left ( 1+0.0045\right )^{108}-1\right ]}{0.0045}$

$108=P\times (1.6240)$

P=$ 66.501

sop monthly deposit of $ 66.5 is required.

8 0

3 years ago

Help please !!!!!!!!!!!!!!!!!!

Hunter-Best [27]

Answer:

n = 59

Step-by-step explanation:

There's definitely a better way, i just did math randomly but here goes:

First i squared both sides. which gets you:

$(\sqrt{n+5}-\sqrt{n-10} )(\sqrt{n+5}-\sqrt{n-10} )=1^2\\\\n+5 -2\sqrt{(n+5)(n-10)} +n-10=1$

Cleaning this up gives you:

$2n-5 -2\sqrt{(n+5)(n-10)}=1$

Now move everything to the other side so we can square this equation again

$-2\sqrt{(n+5)(n-10)}=-2n+6$

Divide both sides by -2

$\sqrt{(n+5)(n-10)}=n-3$

square again

$(n+5)(n-10)=(n-3)^2\\n^2-5n-50=n^2-6n+9$

subtract n^2 from both sides, add 6n, and add 50

$-5n-50=-6n+9\\n-50 = 9\\n=59$

Put this back into the equation and you get a correct answer!

sqrt(59 + 5) = sqrt(64) = 8

sqrt(59-10) = sqrt(49) = 7

8 - 7 = 1

5 0

3 years ago

PLEASE READ AND HELP!

Darya [45]

Maybe lay out some food on the side walk and see if the cat comes by. i honestly don’t know what to tell you because i don’t own a cat. i hope you find her tho!<3

8 0

4 years ago

Read 2 more answers

Tina is making rectangular signs. Each poster has an area of 1800 square inches and the length is 30 inches more than the width.

Fittoniya [83]

Let the width be x. Since the length is 30inches longer than the width, the length is 30 + x.
Area = length x width = (30 + x)(x)
i.e. (30 + x)(x) = 1800 square inches.

$30x + x^{2} =1800 \\ x^{2} +30x-1800=0 \\ x^{2} -30x+60x-1800=0 \\ ( x^{2} -30x)+(60x-1800)=0 \\ x(x-30)+60(x-30)=0 \\ (x+60)(x-30)=0$
x + 60 = 0 or x - 30 = 0
x = -60 or x = 30
but the width cannot be a negative number, hence x = 30inches
i.e. width = 30 inches
length = 30 + 30 = 60 inches.

4 0

3 years ago