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3 years ago

a rectangle has a length of 12 and an unknown width x. write expression for the permeter and area of rectangle

Mathematics

1 answer:

svet-max [94.6K]3 years ago

7 0

If the width is literally x then:
12(2)+2(x)
24+2x is the perimeter

12(x)
12x is the area

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Your friend has $90 when he goes to the fair. He spends $5 to enter the fair and $15 on food. Rides at the fair cost $1.50 per r

Maksim231197 [3]

Answer: Option 'B' is correct.

Step-by-step explanation:

Since we have given that ,

Total money he takes while going to the fair = $90

Money he spends to enter the fair = $5

Money he spends on food =$15

Total he spent now is given by

$\$5+\$15=\$20$

Now, he spend on rides at the fair i.e. 1.50 per ride .

Let the number of rides be x

So, cost incurred on rides = 1.5x

So, the spending money can be expressed as

$20+1.50x$

Now, remaining money left to him after spending on x rides too is

$90-(1.50x+20)\\\\=90-1.50x-20\\\\=70-1.5x$

Let f(x) denotes the function used to determine the money he has left over after rides .

So it becomes

$f(x)=70-1.50x\\\\f(x)=-1.50x+70$

3 0

3 years ago

Read 2 more answers

Stacy bought gas for her car . Gas cost$143.54 per liter. Stacy bought 12.4 liters. What was the total cost for Stacy gas expres

UNO [17]

Answer:

$1779.896

Step-by-step explanation:

From the above question

1 liter = $143.54

12.4 liters = $x

Cross Multiple

1 liter × $x = 12.4 liters × $143.54

$x = 12.4 liters × $143.54/1 liter

$x = $1779.896

Therefore, the total cost for Stacy gas in dollars and cents is $1779.896

8 0

3 years ago

А)

Nookie1986 [14]

Answer:

Step-by-step explanation:

surface area of sphere=a

4pir^2=a

r^2=a/4p

r=root(a/4pi)

if radius is doubled

r1=2root(a/4pi)

r1^2=4(a/4pi)

a/a1=(4pia/4pi)/(4pi 4a/4pi)=1/4

so a is increased by 4 times

6 0

3 years ago

A family eats at a restaurant . The bill is$ 42 dollars . The family leaves a tip and spends $ 49.77 dollars .

bagirrra123 [75]

Answer:

Since you didnt include an actual question im guessing you are looking for the tip amount which would be $ 7.77

Step-by-step explanation:

49.77-42=7.77

3 0

3 years ago

Read 2 more answers

Two angles of a triangle have the same measure and the third one is 36 degrees greater than the measure of each of the other two

alekssr [168]

Answer:

Largest angle is 84

Step-by-step explanation:

Let the smallest angle be x, ATQ, x+x+x+36=180, 3x+36=180, x=48

7 0

3 years ago