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3 years ago

Patrick and his brother each start a savings account. Patrick begins with $200

Mathematics

1 answer:

skad [1K]3 years ago

7 0

Answer:

Both brothers will have the same amount of money is their saving accounts after six months.

Step-by-step explanation:

I worked this out by finding out the first 8 months of savings for both brothers:

Patrick: His brother:

200 150

225 185

250 220

275 253

300 290

325 325

375 360

400 395

I then looked across my results to see that at 6 months both brothers had $325.

Hope this helped.

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A 9-yard roll of string costs $3.42. What is the unit price?

Karolina [17]

Answer:

$0.38 per yard

Step-by-step explanation:

Step 1:

Given; A 9-yard roll of string that costs $3.42.

Required; To find the unit price

Step 2:

Convert $3.42 to cents

$1 ~dollar=100~cents ~\\therefore,\\$3.42=3.42~x~100=342~cents~$

Step 3:

Find the unit price

$\frac{9 yard}{1 yard} =\frac{342 ~cents}{x~cents}$

$9x=342$

$\frac{9x}{9} =\frac{342}{9}$

$x=38~cents$

Convert to dollars

$x=\frac{38}{100}$

$x=0.38~per~yard$

Hence the unit price is $0.38 per yard.

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2 years ago

How many moles are in a sample of 3.01 x 10^18 formula units of sodium hydroxide (NaOH)?

Lunna [17]

Step-by-step explanation:

We can use the formula to find the number of moles. As ,

$:\implies$ n = No. of particles/ N_A

$:\implies$ n = 3.01× 10¹⁸/6.022 × 10²³

$:\implies$ n = 1/2 / 10⁵

<h3>Hence the number of particles is 1/2 / 10⁵ </h3>

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2 years ago

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NeX [460]

Answer:

Step-by-step explanation:

-7.5 is less than 6.5

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2 years ago

A container has 3 apple juice boxes, 4 grape juice boxes and 5 orange juice boxes. Alex picks one juice box, drinks it and then

Eduardwww [97]

Hey!

Grape over total: $\frac{4}{12}$

After he drinks 1, there will be 1 less. That means it will be over 11

Orange over total: $\frac{5}{11}$

Now multiply the fractions

$\frac{4}{12} \times \frac{5}{11} = \frac{20}{132} \rightarrow \frac{10}{66} \rightarrow \frac{5}{33}$

That means the probability is: $\frac{5}{33}$

Good luck and hope this helps! :)

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3 years ago

How many litters of apple syrup and water did she use in the ratio of 2:3 and made 1800 ml of such fruit juice

sp2606 [1]

Answer:

720 mL ; 1080 ml

Step-by-step explanation:

Givenn:

Apple syrup : water = 2 : 3

Fruit juice volume made using the ratio above = 1800 ml

Sum of ratio = 2 + 3 = 5

Litres of Apple syrup :

(Syrup ratio / total) * total volume of fruit

(2 / 5) * 1800

= 0.4 * 1800

= 720 ml

Litres of water :

(water ratio / total) * total volume of fruit

(3 / 5) * 1800

= 0.6 * 1800

= 1080 ml

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2 years ago