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mario62 [17]
3 years ago
15

Find the values of a and b.

Mathematics
1 answer:
Roman55 [17]3 years ago
4 0

Step-by-step explanation:

Substitute x=0x=0 to get a3+b2=−56a3+b2=−56 and x=−1x=−1 to get a2+b=−12a2+b=−12 and solve them to get a=−7,b=3

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Which linear inequality is shown on the graph?
AlekseyPX
Answer: choice C) x-y <= 2

======================================

Explanation:

The two points (0,-2) and (2,0) are on the boundary line. The boundary line equation is y = x-2. We find this equation through the use of the slope formula to find that m = 1. The y intercept is -2 so b = -2. Therefore, y = mx+b turns into y = 1x+(-2) which simplifies to y = x-2

The equation y = x-2 can be arranged to get x-y = 2 (subtract y from both sides; add 2 to both sides)

So the answer is either x-y <= 2 OR it is x-y >= 2

The question is: which inequality has the test point (0,0) in it? We pick on the origin since 0 is the easiest number to work with.

Plug (x,y) = (0,0) into the equation for choice C
x-y <= 2
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0 <= 2
which is true. So choice C is the answer.

Choice D can be ruled out since...
x-y >= 2
0-0 >= 2
0 >= 2
which is false: 0 is not larger or equal to 2
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4 years ago
What is the 7th term of the geometric sequence? <br><br> 2, 8, 32, 128, ...
artcher [175]
The 7th term of the geometric sequence is 8,192!
7 0
3 years ago
Claculate the height (x) of the tree.
Alexeev081 [22]

Answer:

50√3/3

Step-by-step explanation:

30-60-90 triangle

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50*2 =100

100/2sqrt3 = ​3

​50√

​3

​

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5 0
4 years ago
WILL MARK BRAINLIEST
kicyunya [14]

Answer:

66 cm

Step-by-step explanation:

Let's define the circumference first.

It is the boundary of any curved geometric figure specially circle.

We are given the diameter of the circle in the diagram

The diameter is:

d = 21 cm

to find the circumference, we have to find the radius of the circle first.

As radius is half of diameter

d = r/2

= 21/2

= 10.5 cm

The formula for circumference is:

C = 2\pi r\\Putting\ the\ values\\C = 2 * \frac{22}{7}*10.5\\ C = \frac{462}{7}\\ C= 66\ cm

The circumference is 66 cm ..

8 0
4 years ago
Read 2 more answers
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Contact [7]

Answer:

c

Step-by-step explanation:

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5 0
3 years ago
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