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3 years ago

What is the value of the expression 2 + 3^2 * (5 -1)

Mathematics

1 answer:

alexgriva [62]3 years ago

8 0

Answer:

Step-by-step explanation:

We are to solve for the expression;

2 + 3² × (5 - 1)

We should aply BODMAS here!

So starting with the brackets;

2 + 3² × 4

Then solving the multiplication part;

3² × 4 = 9 × 4 = 36

Finally adding the integers;

2 + 36 = 38

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Mary has 15 points with the total value of $1.75 if the coins are nickels and quarters how many of each kind are there

torisob [31]

Answer:

The number of nickel coins is 10 and the number of quarter coins is 5

Step-by-step explanation:

<u><em>The correct question is</em></u>

Mary has 15 coins with the total value of $1.75 if the coins are nickels and quarters how many of each kind are there

Let

x ----> the number of nickel coins

y ----> the number of quarter coins

Remember that

$1\ nickel=\$0.05$

$1\ quarter=\$0.25$

we know that

Mary has 15 coins

$x+y=15$ -----> equation A

The total value of the coins is $1.75

$0.05x+0.25y=1.75$ ----> equation B

Solve the system by graphing

Remember that the solution is the intersection point both graphs

using a graphing tool

The solution is the point (10,5)

therefore

The number of nickel coins is 10 and the number of quarter coins is 5

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3 years ago

Is 16/3 rational or irrational?

Rudik [331]

16/3 is rational simply because it is a fraction made up of whole numbers.

Irrational numbers cannot be expressed as fractions made up of whole numbers.

5 0

3 years ago

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Mary has three lengths of cable, 3/6 yard long, 1/4 yard long, and 1/3 yard long, which two pieces together make a length of 20/

nikitadnepr [17]

Answer:

3/6 + 1/3

Step-by-step explanation:

20/24 can be devided top and bottom by 4 which would equal 5/6, if you add 3/6 + 1/3 also equals 5/6.

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3 years ago

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(3) There are 2 mixtures of light purple paint. Mixture A is made with 5 cups of

ivann1987 [24]

Answer:

Mixture A

Step-by-step explanation:

besause it uses less portion of white paint

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2 years ago

Answer Please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Marizza181 [45]

Answer:

likely

Step-by-step explanation:

the moon circles the world (i think) meaning it will show to at least one side of earth unless there is a very rare thing where it either crashes into earth or goes off somewhere... but that's very unlikely :)

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1 year ago

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