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3 years ago

2abc - 3ab if a = 2, b= -3 ,c=4

Mathematics

2 answers:

Elis [28]3 years ago

5 0

Answer:

The answer is -30.

Have a nice day and please mark as brainliest!<3

Andrei [34K]3 years ago

4 0

i believe that the answer is -30

hope this helps! :)

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Callie has 2 cans of orange paint with 4.5 gallons in each can. She also has 910 of a gallon of black paint. Her brother took 0.

Solnce55 [7]

Answer:

The total amount of paint left is 1.6 gallon of paint remaining

Where she has:

1.5 gallon of orange paint left and 0.1 gallon of black paint left.

Step-by-step explanation:

Step 1

Callie has 2 cans of orange paint with 4.5 gallons in each can.

The total gallons of orange paint that she has is given as:

1 can = 4.5 gallons

2 cans = x gallons

Cross Multiply

x = 4.5 gallons × 2 cans

x = 9 gallons of orange paint.

She also has 9/10 of a gallon of black paint.

Her brother took 0.8 gallon of the black paint

and 3.75 gallons from each of the cans of orange paint.

Since there are 2 cans, the total gallons of orange paint that her brother took = 2 × 3.75 gallons

= 7.5 gallons

Step 2

For orange paint

The amount of orange paint that she has left = 9 gallons - 7.5 gallons

= 1.5 gallons of orange paint left.

For black paint

We are told that: She also has 9/10 of a gallon of black paint.

Converting to decimal

= 0.9 gallon of black paint.

Her brother took 0.8 gallon of the black paint

The total gallon of black paint that she has left =

0.9 gallon - 0.8 gallon

= 0.1 gallon of black paint left.

The total amount of paint Callie has remaining after her brother took the stated amounts is:

1.5 gallon of orange paint + 0.1 gallon of black paint = 1.6 gallon of paint remaining

4 0

3 years ago

Permutations vs combinations(one step):

Bogdan [553]

Answer:

the expression is: $^{15}P_3=\frac{15!}{(15-3)!}$

and 2730 different ways are possible.

Step-by-step explanation:

In the given question we have to choose a president, vice

president, and secretary.

Permutations are used when order is important so, as in the given question order is required. We would use permutations

The formula used is: $^nP_r=\frac{n!}{(n-r)!}$ where:

n=total number of objects

r=number of objects selected

In our case: n=15, r=3

Putting values and finding the answer:

$^nP_r\\^{15}P_3=\frac{15!}{(15-3)!} =2730 \ ways$

So, the expression is: $^{15}P_3=\frac{15!}{(15-3)!}$

and 2730 different ways are possible.

7 0

3 years ago

How many $1 bills are the same as one$100 bill

Mila [183]

There are one-hundred $1 in $100.

4 0

4 years ago

Read 2 more answers

Three times a number is -18 what is the number

fiasKO [112]

Answer:

n= -6

Step-by-step explanation:

Make an equation

We know that the number multiplied by 3 must equal -18

3*n=-18

Divide both sides by 3

n=-6

Hope this helps! :)

3 0

3 years ago

Read 2 more answers

Can someone help me wirh this ASAP

madreJ [45]

Heyoo. I used the Pythagorean Theorem to solve it since that theorem can be used to find the missing side of any right angle triangle. Hope this helps!

5 0

3 years ago