All categories

3 years ago

Which is the correct simplified form of the expression ? (Will give brainiest)

Mathematics

1 answer:

andrey2020 [161]3 years ago

6 0

Answer:

Step-by-step explanation:

You might be interested in

Helpppppp me plzzzzzzzzzz

lawyer [7]

Answer:

21/4 or 5.25

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

The lengths of all sides of a triangle are integers when measured in decimeters. One of the sides has length of 1 dm and another

hram777 [196]

Answer:

The perimeter is 7 dm

Step-by-step explanation:

we know that

The Triangle Inequality Theorem states that the sum of the lengths of any two sides of a triangle is greater than the length of the third side.

Let

c------> the length of the third side

case a)

1+c>3

c>2 dm

case b)

1+3> c

4 > c

rewrite

c<4 dm

The solution for c is the interval------> (2,4)

therefore

the value of c must be equal to

c=3 dm (because is an integer)

The perimeter is equal to

P=1+3+3=7 dm

7 0

3 years ago

Andre paid $13 for 3 books. Diego bought 12 books priced at the same rate.

yKpoI14uk [10]

X = $ 52 for the 12 books Diego bought

7 0

3 years ago

An amusement park charges admission plus a fee for each ride. Admission plus four ride cost $22. Admission plus seven ride cost

nignag [31]

Answer:

Admission fee charged = $3

Cost of each ride = $10

Step-by-step explanation:

Let admission fee charged by amusement park in dollars be = $x$

Let cost of each ride in dollars be = $y$

Given:

Admission plus four rides cost $22

If each ride cost in dollars = $y$

Cost of 4 rides in dollars will be = $4y$

So, the total cost in dollars will be given as = $x+4y$

So, we have

$x+4y=22$

Admission plus seven ride cost $31.

If each ride cost in dollars = $y$

Cost of 7 rides in dollars will be = $7y$

So, the total cost in dollars will be given as = $x+7y$

So, we have

$x+7y=31$

So, we have the system of equation as:

A) $x+4y=22$

B) $x+7y=31$

Solving the system by elimination method.

Eliminating $x$ by subtracting equation A from B.

$x+7y=31$

- $x+4y=22$

- - - [Sign of each term of subtract-ant gets reversed]

-----------------------------

$3y=9$

Dividing both sides by 3.

$\frac{3y}{3}=\frac{9}{3}$

∴ $y=3$

Plugging in $y=3$ in equation A.

$x+4(3)=22$

$x+12=22$

Subtracting both sides by 12.

$x+12-12=22-12$

∴ $x=10$

Thus, admission fee charged = $3

Cost of each ride = $10

4 0

3 years ago

Jan is x years old, her sister is twice as old as her, and her brother is three times older than her. Their ages add up to 29. H

victus00 [196]

Jan's age = $4\frac{5}{6}$ years

Sister's age = $9\frac{2}{3} \: years$

Step-by-step explanation:

Jan's age = x years

Sister's age = 2x years

Brother's age = 3x years

According to the given condition:

x + 2x + 3x = 29

6x = 29

x = 29/6

x = $4\frac{5}{6}$ years

2x = $2\times \frac{29}{6}= \frac{29}{3}=9\frac{2}{3} \: years$

Therefore,

Jan's age = $4\frac{5}{6}$ years

Sister's age = $9\frac{2}{3} \: years$

3 0

3 years ago