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Gelneren [198K]
3 years ago
5

Solve the equation. 2x − 3 + 4x = 21

Mathematics
2 answers:
Vlada [557]3 years ago
6 0
Add 3 to each side, then cross out the three. The equation can be rewritten as 2x+4x=24
2x plus 4x is 6x, making our equation 6x=24.
Divide by 6 on each side to get the answer x is 4. Your answer is 4
Talja [164]3 years ago
6 0
Simplifying 2x + -3 + 4x = 21
Reorder the terms: -3 + 2x + 4x = 21
Combine like terms: 2x + 4x = 6x -3 + 6x = 21
Solving -3 + 6x = 21
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + 6x = 21 + 3
Combine like terms: -3 + 3 = 0 0 + 6x = 21 + 3 6x = 21 + 3
Combine like terms: 21 + 3 = 24 6x = 24  
<span>Divide each side by '6'.
</span>x = 4
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]7. A zucchini plant in Darnell’s garden was 13 centimeters tall when it was first planted. Since then, it has grown approximate
Pani-rosa [81]

Let d be the number of days and h be the height

h = 13 + 0.6d


Answer: (a) h = 13 + 0.6d


Given height = 0.208m, find d:


0.208m = 20.8 cm


20.8 = 13 + 0.6d

0.6d = 20.8 - 13 = 7.8

d = 7.8 ÷ 0.6 = 13


Answer: (b) 13 days






5 0
3 years ago
The price of an office chair was $86. The tax rate was 6%. What was the tax on the chair?
Tamiku [17]

Answer:

86

X.06

_____

516

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05.16

Step-by-step explanation:

3 0
3 years ago
2. Starting at a fixed time, each car entering an intersection is observed to see whether it turns left (L), right (R), or goes
jasenka [17]

Answer:

Natural numbers (integers greater than zero)

X = 3,  5,  4,  4,  3

Step-by-step explanation:

The least number of cars that can be observed in this experiment is 1, if the first car turns left. On the other hand, the experiment could go on forever if no car ever turns left, thus the highest number of cars approaches infinite.

The possible values of X are integers greater than zero, which are known as the Natural numbers.

If X = number of cars observed, simply count the number of letters in each outcome for the value of X:

Outcome = RRL, AARRL, AARL, RRAL, ARL

            X = 3,  5,  4,  4,  3

7 0
3 years ago
Simplify the number using the imaginary unit I. sqrt-25<br> a.-5t<br> b.5i<br> c.-5<br> d.5
pentagon [3]
The answer to this question is: B;5i
4 0
3 years ago
Read 2 more answers
Need help on number 2 plz I appreciate it thank you so much
vladimir1956 [14]

Answer:

\angle PQR, \angle SQR, and \angle PQS

Or

angle PQR, angle SQR and angle PQS

Step-by-step explanation:

The three different angles in the diagram are angle PQR, angle SQR and angle PQS.

Another way of writing this is using an angle sign before the alphabets follows. Thus:

\angle PQR, \angle SQR, and \angle PQS

6 0
3 years ago
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