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3 years ago

HELP PLEASEEEEEE PLEASEEEEE PLEASEEEEEE

Mathematics

2 answers:

weeeeeb [17]3 years ago

4 0

Hey there! I'm happy to help!

When evaluating the value of an expression, we need to follow the order of operations which is PEMDAS (parentheses, exponents, multiplication, division, addition, subtraction).

First, we will evaluate the exponent. 3² is 3×3 which is 9.

$\frac{9+2*8}{16-11}$

Now we have to do multiplication. Since the multiplication sign is between the 2 and the 8, that is what we multiply.

$\frac{9+16}{16-11}$

Then we will do our addition and subtraction.

$\frac{25}{5}$

Since all fractions are just division problems, we can do 25÷5.

25÷5=5

So, the value of this expression is 5.

Have a wonderful day and keep on learning! :D

Contact [7]3 years ago

3 0

Step-by-step explanation:

$\frac{3 ^{2} + 2.8 }{16 - 11} \\ \frac{9 + 2.8}{16 - 11} \\ \frac{11.8}{5} \\ 2.3$

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4 years ago

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bija089 [108]

To solve this, set up two equations using the information you're given. Let's call our two numbers a and b:
1) D<span>ifference of two numbers is 90
a - b (difference of two numbers) = 90

2) The quotient of these two numbers is 10
a/b (quotient of the two numbers) = 10

Now you can solve for the two numbers.
1) Solve the second equation for one of the variables. Let's solve for a:
a/b = 10
a = 10b

2) Plug a =10b into the first equation and solve for the value of b:
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3) Using b = 10, plug it back into one of the equations to find the value of a. I'll plug it back into the first equation:
a - b = 90
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-------

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3 years ago

Read 2 more answers