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2 years ago

8

If I had a grade of 81 in a mathematics class and earned a 90 on a TEST grade, what would be the grade then be?

1 answer:

balu736 [363]2 years ago

3 0

Answer:

It depends how much percent the test is worth on your grade, and how much test grades you have. It would definitely raise to at least an 83 though.

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Math problem: intervals

IRISSAK [1]

Answer:

B

Step-by-step explanation:

Given the function $h(t)=(t+3)^2+5.$

Find the average rate of change on interval $[t_1,t_2]:$

$\dfrac{h(t_2)-h(t_1)}{t_2-t_1}=\\ \\=\dfrac{((t_2+3)^2+5)-((t_1+3)^2+5)}{t_2-t_1}=\\ \\=\dfrac{(t_2^2+6t_2+9+5)-(t_1^2+6t_1+9+5)}{t_2-t_1}=\\ \\=\dfrac{t_2^2-t_1^2+6t_2-6t_1}{t_2-t_1}=\\ \\=\dfrac{(t_2-t_1)(t_2+t_1)+6(t_2-t_1)}{t_2-t_1}=\\ \\=\dfrac{(t_2-t_1)(t_2+t_1+6)}{t_2-t_1}=\\ \\=t_2+t_1+6$

This value is negative only for $t_1=-4,\ t_2=-3,$ so correct option is B

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4 years ago

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dsp73

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Step-by-step explanation:

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https://www.emathhelp.net/calculators/algebra-1/parallel-and-perpendicular-line-calculator/

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