Answer:
x >-11
Explanation:
2x+7>-15
Subtract 7 from both sides
2x >-15-7
Simplify-15-7 to -22
2x >-22
Divide both sides by 2
22
x > - ___
2
Simplify 22/2 to 11
x >-11
Answer:
2
Step-by-step explanation:
you find the gradient by doing y-y`/x-x`
so 3-9/-2-1 which gives you -6/-3 which is 2
Answer:
102 ≤ heart rate ≤ 183.6
Step-by-step explanation:
... lower limit ≤ heart rate ≤ upper limit
Put 16 where "a" is and do the arithmetic.
... lower limit = 0.5(220 -16) = 102
... upper limit = 0.9(220 -16) = 183.6
Then the inequality is ...
... 102 ≤ heart rate ≤ 183.6
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<em>Comment on the problem</em>
There is nothing to "solve" here. One only needs to evaluate the limits.
Answer:
Base of parallelogram= 2x+3
Height of parallelogram=3x-2
Area=b*h
=(2x+3)(3x-2) = 6x^2-4x+9x-6= 6x^2+5x-6
If x=30,
6*(30)^2+5*30-6=5400+150-6=5544
Step-by-step explanation:
Answer:
- 9/2 x 26/3 = -39
11/6 * -9/1 = <em>-</em>16 1/2
