All categories

3 years ago

Using the order of operations PEMDAS, what is the 1st that you would do when solving this equation (4x + 3) - 5 + 10

Mathematics

2 answers:

Dima020 [189]3 years ago

6 0

P-arentheses

E-xponents

M-ultiply

D-ivide

A-dd

S-ubstitute

Therefore, You Would Do What Is In Parenthesis First!

juin [17]3 years ago

3 0

First, I would distribute the -5 to everything in the ( ).
-20x -15 +10

Second, combine like terms.
-20x -5

^That's your final answer.

You might be interested in

Find the Area of the Shaded Region.

umka21 [38]

Answer:

A of the shaded figure is 112.5

4 0

3 years ago

This is a question on mean and mediator thats due in 15min

luda_lava [24]

Answer:

mean = 15. 14 or 15

median= 14

range = 25

5 0

3 years ago

There are 18 female students and 16 male students in a class. Which of the following expresses the ratio of female students to m

Alex Ar [27]

9:8
9 female to 8 male

6 0

2 years ago

Read 2 more answers

After breaking your penny bank, you notice that you have $4.87 in quarters ($0.25), dimes ($0.10), nickels ($0.05), and pennies

ira [324]

Answer: Option 'c' is correct.

Step-by-step explanation:

Let the number of dimes be 'x'.

Let the number of nickels be ' $\dfrac{3}{2}x$ '.

Let the number of pennies be $\dfrac{3}{2}\times 2x=3x$

Let the number of quarters be '3x-34'.

As we know that

1 quarter = $0.25

1 dime = $0.10

1 nickel = $0.05

1 penny = $0.01

According to question, we get that

$0.10x+0.05\times \dfrac{3x}{2}+0.01\times 3x+0.25(3x-34)=4.87\\\\0.10x+0.075x+0.03x+0.75x-8.5=4.87\\\\\\0.955x=4.87+8.5\\\\0.955x=13.37\\\\x=\dfrac{13.37}{0.955}\\\\x=14$

So, the number of pennies is given by

$3x=3\times 14=42$

Hence, Option 'c' is correct.

3 0

2 years ago

Aysha has 40 cubes in a bag.

marissa [1.9K]

Given:

Total number of cubes = 40

Red cubes = 18

Blue cubes = 13

Yellow cubes = 9

Aysha adds some more red cubes into the bag.

The probability now that she will take a red cube is 0.5.

To find:

The probability that she will take a yellow cube.

Solution:

Let Aysha adds x red cubes into the bag. Then,

Number of total cubes = 40+x

Number of red cubes = 18+x

Probability of getting a red cube is:

$P(Red)=\dfrac{18+x}{40+x}$

The probability now that she will take a red cube is 0.5. So,

$\dfrac{18+x}{40+x}=0.5$

$18+x=0.5(40+x)$

$18+x=20+0.5x$

$x-0.5x=20-18$

$0.5x=2$

Divide both sides by 0.5.

$x=\dfrac{2}{0.5}$

$x=4$

It means Aysha adds 4 more red cubes into the bag.

Now, the total number of cubes int he bag is:

$40+4=44$

Probability of getting a yellow cube is:

$P(Yellow)=\dfrac{\text{Number of yellow cubes}}{\text{Total number of cubes}}$

$P(Yellow)=\dfrac{9}{44}$

Therefore, the required probability is $P(Yellow)=\dfrac{9}{44}$ .

8 0

2 years ago