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2 years ago

Use a ratio to compare this quantity 25mm : 2cm

Mathematics

1 answer:

Tema [17]2 years ago

4 0

5:4 i’m not quite sure but i think it would be 5:4

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A store advertises 15% off an item that regularly sells for $300.

nataly862011 [7]

Answer:

The sale price of the item is $ 255

Step-by-step explanation:

To determine the amount of discount ( d ) offered by the store, we calculate

15 % of the sale price. Thus:

d = 300 × 15 ÷ 100

d = 3 00 × 15 ÷ 1 00 (take the 2 zeros out on both the hundred and 3 hundred)

d = 3 × 15

d = 45

If the amount of discount is known, the sale price ( s ) of the item will be the regular price minus the discount. Hence:

s = 300 − 45

s = 255

Hope this helps you! If not sorry!

8 0

1 year ago

Solve for x. 5^11x=25^x+9

4vir4ik [10]

$\displaystyle\\
5^{11x}=25^{x+9}\\\\
5^{11x}=\Big(5^2\Big)^{x+9}\\\\
5^{11x}=5^{2(x+9)}\\\\
11x = 2(x+9)\\\\
11x = 2x+18\\\\
11x - 2x = 18\\\\
9x = 18\\\\
x = \frac{18}{9} = \boxed{2}$

6 0

2 years ago

You have a wire that is 38 cm long. you wish to cut it into two pieces. one piece will be bent into the shape of a square. the o

erica [24]

Circumference + perimeter =38
x = circumference of circle
find r in terms of x
2 $\pi$ r=x
r= $\frac{x}{2 \pi }$
Area= $\pi$ r^2
so..
A= $\pi$ ( $\frac{x}{2 \pi }$ )^2
= $\pi$ ( $\frac{x^{2} }{4 \pi ^{2} }$ )
= $\frac{x^{2} }{4 \pi }$

(38-x) is perimeter
then
$\frac{38-x}{4}$
( $\frac{38-x}{4}$ )^2
$\frac{x^{2} }{4 \pi }$ + ( $\frac{38-x}{4}$ )^2
then you graph it and it equals
16.716 cm the circumference of the circle

6 0

2 years ago

He earns a fixed weekly salary of $300 plus a fee of $5 for each car he parks. His potential earnings for a week are shown in th

tamaranim1 [39]

I think what you are looking for is 5x=300 therefore x=60 so at 60cars he would start to make more.

3 0

2 years ago

An equation that models the sequence 400, 200, 100, 50, ...

Serga [27]

For this, let's have:
n represent each number, the number after it is its place in sequence
/ means divide

n1 /2 = n2, etc.

3 0

2 years ago