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Rina8888 [55]
3 years ago
9

4x + 4y + 2z = 8

Mathematics
1 answer:
Vikentia [17]3 years ago
5 0
The answer is no, because the first two equations are right but the third equation equals -16 instead of -15. So the answer is no (2,-2,4) is not the solution to all the system of equations.
You might be interested in
If 0° < x° < 90° and sin x = 1/2 , then cos x = ?
Naddik [55]
Sinx = opps/hyp = 1/2

2^2 = 1^2 + x^2
x = sqrt(3) = adj

Cosx = adj/hyp = sqrt(3)/2






7 0
4 years ago
Gordon's Tea Shop has caffeinated tea and decaffeinated tea.
Ganezh [65]
Total no. of teas served: 20

Therefore, we can write the two quantities as fractions of twenty:

14/20 and 6/20

A percentage is "per-cent", i.e. per 100, therefore a fraction of 100. To make this denominator a fraction of 100 we multiply it by 5 (20 x 5 = 100), and because what we do to the bottom of the fraction we must do to the top, we multiply each numerator by 5:

14/20; 14 x 5 = 70
6/20; 6 x 5 = 30

So,

70/100 , 30/100

Answer: 70% of the teas sold were caffeinated.
6 0
3 years ago
PLEASE HELP WORTH 10
Brilliant_brown [7]

D. The change in the elevators height for every one additional second

8 0
3 years ago
Jim ran four-fifths of a mile and dropped out of the race. His pace was 12 miles per hour until the point he dropped out of the
Nataly [62]
<u>Find time needed for 4/5 mile:</u>
12 miles = 1 hour

1 mile = 1/12 hour

4/5 mile = 1/12 x 4/5 = 1/15 hours

<u>Convert hour to min</u>

1/15 hour = 1/15 x 60 = 4 mins


Answer: He ran for 4 minutes


7 0
3 years ago
CAN SOMEONE PLEASE ANSWER THIS ASAP!
sashaice [31]

Answer:

42

Step-by-step explanation:

\sqrt{1,764}

Solving the square root by factorization:

1764 = 2² × 3² × 7²

\sqrt{1,764} will be \sqrt{2^2(3^2)(7^2)} = 2 × 3 × 7 =42

7 0
4 years ago
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