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olasank [31]
3 years ago
15

Simplify the expression below.

Mathematics
2 answers:
mario62 [17]3 years ago
5 0

3 · -8 + 5 - 4 ÷ 2

Use PEMDAS

P=parenthesis

E=exponents

M= multiplication

A= addition

S=subtraction

-24+5- 4÷ 2

-19-2

=-21

Answer is B-21

Margaret [11]3 years ago
4 0

Answer:

B. -21

Step-by-step explanation:

You have to follow PEMDAS

3*-8=-24

So, -24+5-4÷2

-4÷2=-2

So, -24+5-2

Then add and subtract from left to right

-24+5=-19

-19-2=-21

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Which expressions are polynomials?
cupoosta [38]

<em><u>The expressions that are polynomial are:</u></em>

6 + w

2x^4 - y

z + 1

<em><u>Solution:</u></em>

A polynomial is an expression with variables and coefficients with the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables

1) 6 + w

Here "w" is a variable, hence it is a polynomial expression

2)\ 2x^4 - y

This is a polynomial, since it has variables and coefficients and variable with non negative exponent

3) z + 1

This is also a polynomial with variable "z" and has addition operation

4)\ y^2 - y\sqrt{3} + 4

Since it has root so it is not a polynomial

6 0
3 years ago
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Whats greater .12 or 12/16​
Semenov [28]

Answer:

12/16 is greater than 0.12.

Step-by-step explanation:

0.12 = 12/100 = 6/50 = 3/25

12/16 = 3/4.

So, 12/16 is greater than 0.12.

4 0
3 years ago
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A knife is three times the cost of a spoon. 9 spoons and 12 knifes cost ?82.80 workout the cost of 1 knife.
tankabanditka [31]

Let S = spoon

Let K = knife


1 knife is thee times the cost of a spoon, so it would be 3S

Now you have 9S + 12K = 82.80

We can replace the K with 3S:

9S +12(3S) = 82.80

Simplify the left side:

9S + 36S = 82.80

Add:

45S = 82.80

Divide both sides by 45"

S = 82.80 / 45

S = 1.84

One spoon cost $1.84


We know one knife cost 3 times as much, so multiply the cost of a spoon by 3:

Knife = 1.84 x 3 = $5.52

7 0
3 years ago
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I need help what is 30% of 31
Ainat [17]

Answer:

9.3

Step-by-step explanation:

Is means equals and of means multiply

W = 30% * 31

Change to decimal form

W = .30 *31

W = 9.3

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3 years ago
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2 boxes of tea weigh 3 oz. A Tea company packs 112 boxes in a case of tea. How many pounds does each case of tea weigh?
12345 [234]
16 ounces equal 1 pound.
So 1 box is 1.5 ounces of tea.
multiply 1.5 by 112 and you get 168.
Then divided by 16 to make the ounces become pounds.
The answer is 10.5 
6 0
3 years ago
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