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Zina [86]
3 years ago
8

Simply the expression below . 8+ ( 15 - 3 ) + 4 help please .

Mathematics
2 answers:
Alona [7]3 years ago
7 0
8 + (15-3) + 4
8 + 12 + 4
20 + 4
24
your answer is 24
maxonik [38]3 years ago
7 0

Answer:

24

Step-by-step explanation:

8+ ( 15 - 3 ) + 4

8+12+4

20+4

24

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The deep body temperature of a healthy person is 37°C. What is it in kelvins?
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Answer:

The deep body temperature of a healthy person is 310.15 K

Step-by-step explanation:

The formula we are going to use is T_{K}=T_{C}+273.15

We know that the deep body temperature is 37°C, putting this value into the formula we have that T_{K}=37+273.15 = 310.15 K

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3 years ago
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Consider the proof. Given: In △ABC, BD ⊥ AC Prove: the formula for the law of cosines, a2 = b2 + c2 – 2bccos(A) Statement Reason
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Solution: The missing reason in Step 8 is substitution of x=c\cos (A).

Explanation:

The given steps are used to prove the formula for law of cosines.

From step 5 it is noticed that our equation is

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So by substituting c\cos (A) for x in equation (1) we get the equation of step 8, i.e.,

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5 0
3 years ago
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What is the value of x in the equation 1/5 x-2/3 y=30 when y =15
laiz [17]
First replace y with 15.
1/5x-10=30
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4 0
3 years ago
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Solve the inequality:
steposvetlana [31]

Answer:

x >_ 1

Step-by-step explanation:

Solving an inequality is a lot like solving an equation. Just pretend the inequality symbol is an equal sign!

(also i wont be using the _ or equal to symbol because I'm too lazy, so you'll get >_ or <_ for those, sorry)

8 + 4x >_ 12

-8             -8

4x >_ 4

/4       /4

x >_ 1

6 0
3 years ago
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