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mote1985 [20]
3 years ago
8

Evaluate the expression 2(8 - 4)^2 - 10 / 2

Mathematics
2 answers:
Yakvenalex [24]3 years ago
6 0

Answer:

27

Step-by-step explanation:

2(8 - 4)^2 - 10/2

Using the order PEMDAS, or parenthesis, exponents, multiplication, division, addition, subtraction, we will start with the parenthesis, or 8-4.

2(4)^2 - 10/2

Next is exponents.

2(16) - 10/2

And then multiplication.

32 - 10/2

Then division.

32 - 5

Finally, subtraction.

27

Therefore, the answer is 27.

Artemon [7]3 years ago
5 0
2(8-4)^2-5
16-32-5
-21





you can change the -10/2 to a -5 and it will be easier.
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What is the slope line perpendicular to the equation 4x+3y=9
aleksandrvk [35]

Answer:

m=3/4

Step-by-step explanation:

first, let's put the line 4x+3y=9 from standard form (ax+by=c) into slope-intercept form (y=mx+b)

we have the equation 4x+3y=9

subtract 4x from both sides

3y=-4x+9

divide by 3

y=-4/3x+3

perpendicular lines have slopes that are negative and reciprocal. If the slopes are multiplied together, the result is -1

so to find the slope of the line perpendicular to the line y=-4/3x+3, we can take the slope of y=-4/3x+3 (-4/3) multiply it by a variable (this is our unknown value), and have that set to -1

(m is the slope value)

-4/3m=-1

multiply by -3/4

m=3/4

therefore the slope of the perpendicular line is 3/4

hope this helps!! :)

7 0
3 years ago
Evaluate the expression 3•5^x when x is 2​
zmey [24]

Answer:

The answer to

         2

3 x 5       =   75

Step-by-step explanation:

you do Exponents first PEMDAS

5 to the second power

5 x 5 = 25

25 x 3 = 75

5 0
2 years ago
Vinnie drives his car 210 miles and has an average of a certain speed. If the average speed had been 3mph more, he could have tr
Pachacha [2.7K]

Answer:

35 mph

Step-by-step explanation:

time = distance / speed

210 miles and has an average of a certain speed

t = 210 / s

If the average speed had been 3mph more, he could have traveled 228 miles in the same length of time

t = 228 / (s + 3)

Set equal

210 / s = 228 / (s + 3)

Cross multiply

210s + 630 = 228s

Subtract 210s from both sides

630 = 18s

Divie both sides by 18

35 = s

35 mph

5 0
3 years ago
Read 2 more answers
I need help with all these problems and need to know is the ones I did correct
kolezko [41]
Isabelle has a leash for her dog in the backyard. The leash is attached to a post which allows thedog to travel in a circle around the post. The leash is 3 feet long. How much of the yard can thedog reach while on the leash?

5 0
3 years ago
I want to rearrange the formula of 3+x=ax to find out what x is equal to. I already know the answer via the answer sheet but I w
taurus [48]

Answer:

See below.

Step-by-step explanation:

3+x=ax    (Given)

x=ax-3    (Subtracted 3 on both sides)

x-ax=-3    (Subtracted ax on both sides)

x(1-a)=-3    (Factor out x from x - ax)

x=-\frac{3}{1-a}    (Divided 1 - a on both sides)

7 0
3 years ago
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