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Ira Lisetskai [31]
3 years ago
11

Expand 8x - 2x + 3(-4x+9)

Mathematics
2 answers:
Trava [24]3 years ago
7 0

Answer:

x ^3 + 6 x ^2 + 12 x + 8

stiks02 [169]3 years ago
3 0

Answer:

4

Step-by-step explanation:

Always do parentheses first!

-4x+9=-5x

8x-2x=6x

-5x-6x+3=

x+3=4

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A what is formed by two number lines that intersect at a right angle?
Schach [20]

Answer: Coordinate Plane is formed by two number lines that intersect at a right angle.

3 0
3 years ago
Which of the following describes the algebraic expression 5(x+2)-3
Pavel [41]

5X+7 is the correct answer
3 0
3 years ago
A spring exerts a force of 6 N when stretched 3 m beyond its natural length. How much work is required to stretch the spring 2 m
lys-0071 [83]

Answer:

4Joules

Step-by-step explanation:

According to Hooke's law which states that extension of an elastic material is directly proportional to the applied force provide that the elastic limit is not exceeded. Mathematically,

F = ke where

F is the applied force

K is the elastic constant

e is the extension

If a spring exerts a force of 6 N when stretched 3 m beyond its natural length, its elastic constant 'k'

can be gotten using k = f/e where

F = 6N, e = 3m

K = 6N/3m

K = 2N/m

Work done on an elastic string is calculated using 1/2ke².

If the spring is stretched 2 m beyond its natural length, the work done on the spring will be;

1/2× 2× (2)²

= 4Joules

3 0
3 years ago
If I'm paying $1 for a widget today and tomorrow it goes up to $6 what is the percentage increase and how did you get there?​
sveta [45]

Answer:600%

Step-by-step explanation:

1.00 × 600% = 6

3 0
3 years ago
Rohan did a survey in four bird parks and wrote the following observations:
stiks02 [169]

Answer:  Park P

Step-by-step explanation:

Since, According to the question,

Number of yellow bird in park P = 33

Total number of the bird in park P = 53

Thus, the percentage of yellow bird in park P = \frac{33}{53} \times 100= 62.264150943% ≈ 62 %

Number of yellow bird in park Q = 20

Total number of the bird in park Q = 48

Thus, the percentage of yellow bird in park P = \frac{20}{48} \times 100=41.666666666% ≈ 42%

Number of yellow bird in park R = 54

Total number of the bird in park R = 90

Thus, the percentage of yellow bird in park R = \frac{54}{90} \times 100= 60 %

Number of yellow bird in park S = 44

Total number of the bird in park S = 83

Thus, the percentage of yellow bird in park P = \frac{44}{83} \times 100=53.012048192 % ≈ 53 %

Since, 62% > 60% > 53% > 42%

Therefore, highest percentage of the yellow bird is 62 %

Which is present in park P.

8 0
3 years ago
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