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3 years ago

Alice buys a book for £19.80

Mathematics

2 answers:

Ierofanga [76]3 years ago

7 0

Answer:35%

Step-by-step explanation:

arlik [135]3 years ago

5 0

Answer:

The answer is $6.93 Hope I helped you!

Step-by-step explanation:

So if you subtract $19.80 - $12.87 = $6.93

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18 less than the product of 42 and x write as an algebraic expression

Afina-wow [57]

Less than = subtraction = -
Product = multiplication

(42 + x) - 18

4 0

3 years ago

Overnight rain has left 8 gallons of water in Juan's boat. Juan secures a small container and begins scooping the water out at a

GuDViN [60]

Answer:

What am I supposed to answer?

Step-by-step explanation:

4 0

3 years ago

3-(x-1)=-1-(5-x) pls help

Alika [10]

Answer:

$- 3(x - 1) = - 1(5 - x) \\ \\ 3 - x + 1 = - 5 + x \\ \\ - x - x = - 5 - 3 - 1 \\ \\ - 2x = - 5 - 3 - 1 \\ \\ - 2x = - 9 \\ \\ x = \frac{ - 9}{ - 2} \\ \\ x = 4.5$

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3 years ago

John invests a sum of money in a

nexus9112 [7]

Answer: 0.000007638035

Step-by-step explanation:

We can use the formula for compound interest to solve this.

Now, the formula goes thus:

A = P ( 1 + r/n)^nt

Where A is the amount compounded, P is the initial amount I.e the principal, r is the rate in % , t is the time while n is the number of times the interest is compounded per time I.e how many times per year.

From the question, we get the following parameters, A = $1912.41 , P = ? , t = 15 years, r = 2.63% and n = 1 of course.

Now, we substitute these into the formula

1912.41 = P ( 1 + 2.63) ^ 15

1912.41 = P ( 3.63) ^ 15

1912.41 = P ( 250,379,850)

P = 1912.41 ÷ 250,379,850

P = 0.000007638035

Looks pretty funny an answer right?

6 0

3 years ago

The width of a rectangle is 6 2/3 inches. The length of the rectangle is twice its width. What is the perimeter of the rectangle

hichkok12 [17]

A perimeter of a rectangle is:
$2(l+w)$

They give you the width, but let's convert it to an improper fraction first:
$6 \frac{2}{3} = \frac{20}{3}$

The length is twice the width so it is:
$\frac{20}{3}*2 = \frac{40}{3}$

Now, we are ready to solve, plug in values in the perimeter formula:
$2( \frac{40}{3}+ \frac{20}{3}) = 2(\frac{60}{3}) = \frac{120}{3} = 40$

So, 40 is your answer.

6 0

3 years ago