Answer:
The correct answers are 40, 120, 240, and 320
Step-by-step explanation:
.
Answer:
1
Step-by-step explanation:
x² + 5x-5
Let x = -6
(-6)^2 + 5(-6) -5
36 -30 -5
6-5
1
Answer:
Answer is under this sentence
Step-by-step explanation:
(5,-2) is the solution of the equation, which means that x = 5 and y = -2
so you obtain:
5A + 2B = 24
5B - 2A = 31
Now you need to know either A or B. If we know A, we can also know B and vice-versa.
In order to do that, we get rid of either A or B from our equations. So, we multiply the first equation by -5 and the second one by 2. You'll obtain -10B and +10B in those equations:
-25A - 10B = -120
10B - 4A = 62
If we add up both equations, notice how 10B and -10B cancel each other:
-25A - 4A = -120 + 62
-29A = -58
A = 2
Knowing A, we can know B as well. We go back to our initial equations and we choose the 1st one(or the 2nd one):
5A + 2B = 24
5 * 2 + 2B = 24
2B = 24 - 10
2B = 14
B = 7
So A = 2 and B = 7
Note: I suggest you check in case the arithmetics are done correctly.
Answer: About 88 inches
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Explanation:
Find the circumference
C = pi*diameter
C = (22/7)*28
C = 88
The tire's circumference is approximately 88 inches. This is the perimeter or distance around the circle. As the bike moves forward one full rotation of the wheel, all of the wheel will touch the ground at some point. The bike will move about 88 inches forward when the wheel does one full rotation.
A good way to visualize this is to imagine cutting the tire so that you can unroll it to lay it out completely flat forming a straight line. This line will be roughly 88 inches long.
Answer:
The answer to your question is 0 < x ≤ 3
Step-by-step explanation:
To write this inequality we must consider
- The value of the borders, for this inequality the borders are 0 and 3.
-The kind of border - if it is an open point, we will use the symbol <
- if it is a close c point, we will use the symbol ≤
-The inequality for this problem will be
0 < x ≤ 3