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Leya [2.2K]
3 years ago
14

The altitude a (in feet) of a plane t minutes after liftoff is given by a=3,400t +600 . How many minutes after liftoff is the pl

ane at an altitude of 21,000 feet?
Mathematics
1 answer:
grin007 [14]3 years ago
3 0

Answer:

6 minutes

Step-by-step explanation:

a=3400t+600 substitute 21000 for a

21000=3400t+600 subtract 600 from both sides

20400=3400t divide by 3400

6=t

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How do you solve 4x+10=3x+37
lisov135 [29]

Answer:

x = 27

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Algebra I</u>

  • Equality Properties

Step-by-step explanation:

<u>Step 1: Define equation</u>

4x + 10 = 3x + 37

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Subtract 3x on both sides:                    x + 10 = 37
  2. Subtract 10 on both sides:                     x = 27

<u>Step 3: Check</u>

<em>Plug in x to verify it's a solution.</em>

  1. Substitute:                    4(27) + 10 = 3(27) + 37
  2. Multiply:                        108 + 10 = 81 + 37
  3. Add:                               118 = 118

And we have our final answer!

7 0
3 years ago
PLEASE help me out!!!!!!!!!
ExtremeBDS [4]

Answer: Screams internally

Step-by-step explanation:

6 0
3 years ago
Add the fractions and simplify 5 2/5 + 2 10/13=
HACTEHA [7]
Simple....

you have:

5 \frac{2}{5} +2 \frac{10}{13}

to convert them into improper fractions:

1.) Take whole number*denominator 

(5*5=25)

2.) Take what you got...and add the numerator

(25+2=27)

3.) Use the original denominator

\frac{27}{5}

Do the same to the other one...

2*13=26

26+10=36

\frac{36}{13}

Now..add...

\frac{27}{5} + \frac{36}{13}

But..you need a common denominator!

\frac{27}{5} * \frac{13}{13}= \frac{351}{65}

\frac{36}{13} * \frac{5}{5} = \frac{180}{65}

Now you can add!

\frac{351}{65} + \frac{180}{65} = \frac{531}{65}

When simplified....

8 \frac{11}{65}

Thus, your answer.






6 0
3 years ago
Find all solutions to the equation: cos x = sin x
quester [9]
Divide both sides by cos[x] 

<span>You get 1 = Tan[x] </span>

<span>Tan[x] = 1 where x = 45 degrees {+ integer multiples of 180 degrees due to periodicity of tan} </span>

<span>x = 45 + 180*k OR Pi/4 + kPi, for k any integer</span>
7 0
4 years ago
Read 2 more answers
You are at a pear picking farm and they allow you to pick up to 50 pears a day. Today, you have already picked 14 pears. Which i
AlladinOne [14]

Answer:

C

Step-by-step explanation:

P+ 14 would have to equal 50 or be less than 50

50-14= 36

P would equal 36

36+14 = 50

50 is less than or equal to 50

4 0
4 years ago
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