3 years ago

Which expression is equivalent to h??

Mathematics

1 answer:

Mama L [17]3 years ago

7 0

The answer is b sin A

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The 8th and 20th terms of an arithmetic sequence are 20 and 56 respectively. What is the 1st term of the sequence.

Ostrovityanka [42]

Answer:

Step-by-step explanation:

$a_n=a_1+d(n-1)\\\\a_8=a_1+d\cdot7\\\\a_{20}=a_1+d\cdot19\\\\a_{20}-a_8=a_1+19d-(a_1+7d)=12d\\\\56-20=2d\\\\12d=36\\\\d=3\\\\\\ a_1+3\cdot7=20\\\\a_1=20-21=-1$

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3 years ago

In the question, "35 is what percent of 40?" what is the 35?

schepotkina [342]

Answer:

35 is the 'is' and 40 is the 'of'

Step-by-step explanation:

is/of = %/100

35/40 = x/100

cross-multiply to get:

40x = 3500

x = 3500/40

x = 87.5

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3 years ago

the graph of a quadratic function is shown on the grid. which function is the best represented by this graph?

Sindrei [870]

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Step-by-step explanation:

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3 years ago

Solve x2 – 8x + 15 < 0.

rusak2 [61]

X2 - 8x + 15 = 0
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How many centimeters are there in 75 meters?

kumpel [21]

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7500. There are 100 centimeters in a meter therefore 75 meters have 7500 centimeters.

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