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4 years ago

Factor the expression 7x²+15n-18

Mathematics

1 answer:

notsponge [240]4 years ago

3 0

The Answer Is.....

7x-16+15n

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2) Evaluate the given numerical expression. A) 9 B) 12 C) 14 D) 21

eduard

Answer:

$\boxed{\sf{14}}$

Step-by-step explanation:

$\boxed{\underline{\text{ORDER OF OPERATIONS:}}}$

Use the order of operations.

Note: PEMDAS or BODMAS stands for:

PEMDAS

Parentheses
Exponents
Multiply
Divide
Add
Subtract

BODMAS

Brackets
Order
Divide
Add
Subtract

First, do parentheses.

3+6*(5+4)÷3-7

(5+4)=9

$\Longrightarrow: \sf{3+6* 9\div 3-7}$

Do multiply and divide.

6*9=54

54/3=18

Then, rewrite the problem down.

$\Longrightarrow: \sf{3+18-7}$

Add.

$\sf{3+18=21}$

$\sf{21-7=\boxed{\sf{14}}$

$\Longrightarrow: \boxed{\sf{14}}$

Therefore, the correct answer is "C. 14".

I hope this helps, let me know if you have any questions.

8 0

2 years ago

Solve for x 5(3+x)=5+7x

MakcuM [25]

The answered the question is X=5

5 0

3 years ago

Read 2 more answers

DURING A REGULAR HALF-HOUR TV SHOW THERE ARE 8 MINUTES OF COMMERCIALS. IF EACH COMMERCIAL IS 0.25 MINUTES LONG HOW MANY COMMERCI

kirza4 [7]

Ok so there are 8 min of commercials and if each commercial is .25 minutes. what I did was 8 × 60 to get how many seconds there were. which = 480 and then I did .25 min × 60 and got 15 so I subtracted 15 from 480 and got 7.75
but it says how many commercials so you have to round to the full commercial and you get 8
so I think the answer is 8 or 7.75.

5 0

3 years ago

Read 2 more answers

Whats the inverse of 17=1+9n

WINSTONCH [101]

Answer:

$\frac{9}{16}$