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OleMash [197]
3 years ago
15

Simplify the algebraic expression: 4x + 8y + 7x² + 5x – 2y.

Mathematics
1 answer:
-BARSIC- [3]3 years ago
5 0

Answer:

7x² + 9x + 6y

Step-by-step explanation:

7x² + 4x + 5x + 8y - 2y

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18 feet long and 12 feet wide. What is the area of the floor in square yards?
forsale [732]
Area of a rectangle =length*width

length=18ft=18/3=6yds
width=12ft=12/3=4yds

answer: A=6*4= 24 yds^{2}
3 0
3 years ago
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HELP ME PLZZZZ!!!!!!!!!!!!!!!!!!
Alekssandra [29.7K]

the radius of the distance between the middle point of the circle and the outside, we have the diameter which is 6 so the <u>radius will be 3</u>

slant height is

\sqrt{r^2+h^2}

h is 4.7 and r is 3

\sqrt{3^2+4.71^2} \\5.58427

<u>slant height is 5.58427</u>

lateral surface area

\pi r\sqrt{h^2+r^2}

\pi (3)\sqrt{4.71^2+3^2} \\52.63053

<u>lateral surface area is 52.63053</u>

total surface area

\pi r(r+\sqrt{h^2+r^2})

\pi 3(3+\sqrt{4.71^2+3^2})

80.90486

<u>total surface area is 80.90486</u>

8 0
2 years ago
Maile is walking around a circular track. if the radius is 100m, how far did she walk if she is 1/3 the way around
Stolb23 [73]
The full length of the circumference is
  C = 2πr
  C = 2π*100 m ≈ 628.32 m

1/3 that distance is (628.32 m)/3 ≈ 209.44 m

Maile walked about 209.4 m.
7 0
3 years ago
Find the sum of the following ap .1) 1/15, 1/12, 1/10,....,to 11 terms​
sertanlavr [38]

Answer:

33/20

Step-by-step explanation:

1/12 - 1/15 = 5/60 - 4/60 = 1/60

d = 1/60

a_n = a_1 + d(n - 1)

a_11 = 1/15 + (1/60)(11 - 1)

a_11 = 1/15 + 1/6

a_11 = 4/60 + 10/60

a_11 = 14/60

a_11 = 7/30

a_12 = 14/60 + 1/60

a_12 = 15/60

a_12 = 1/4

s_n = n(a_1 + a_n)/2

s_11 = 11(1/15 + 7/30)/2

s_11 = 11(2/30 + 7/30)/2

s_11 = 11(9/30)/2

s_11 = 99/60

s_11 = 33/20

8 0
3 years ago
I need answer Immediately pls!!!!!!!
Anuta_ua [19.1K]

Answer:

1/14

Step-by-step explanation:

There is only 1 common multiple of 4 and 6 between 1 and 14.

So the probability is:

P = \frac{1}{14}

8 0
3 years ago
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