3 years ago

Anybody know the answer?

Mathematics

1 answer:

disa [49]3 years ago

4 0

All triangles will add up to 180 degrees so subtract 58 from that and divide that by 2

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5c squared- d squared+3/2c - 4d...c= -1. d= -4

riadik2000 [5.3K]

For this case we have the following expression:

$5c ^ 2-d ^ 2 + \frac {3} {2} c-4d$

We must find the value of the expression when:

$c = -1\\d = -4$

Substituting we have:

$5 (-1) ^ 2 - (- 4) ^ 2 + \frac {3} {2} (- 1) -4 (-4) =\\5 (1) -16- \frac {3} {2} + 16 =\\5-16- \frac {3} {2} + 16 =\\-11- \frac {3} {2} + 16 =\\- \frac {25} {2} + 16 =\\\frac {-25 + 32} {2} =\\\frac {7} {2}$

Finally, the value of the expression is:

$\frac {7} {2}$

ANswer:

$\frac {7} {2}$

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3 years ago

One fifth as a percentage

Sidana [21]

When dealing with percentages it is often much easier to convert it to a decimal (mostly because a lot of people are uncomfortable working with fractions) but in this case, I suggest dividing 1 into 5 [hint hint fractions are just glorified division in the long run] and after you have done that multiply by 100. This will get you your answer.

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3 years ago

What are the variable terms in the expression 6g-11+5h

ch4aika [34]

Answer:

the variable terms are the ones with the letters 6g and 5h

Step-by-step explanation:

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2 years ago

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Write each ratio as a fraction in simplest form 5/35

Vladimir [108]