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3 years ago

For the Best Brain: fun question: how do I solve y = 10x + 2 when x equals 3

Mathematics

2 answers:

wel3 years ago

6 0

allsm [11]3 years ago

5 0

You would plug in 3 for x, which gives you y = 10(3) + 2, and then you would use PEMDAS, which means you multiply 10 with 3 and then add two which is 32. Therefore y would equal 32. :D :D

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You and your friend play a game. You answer 80% of the questions correctly and your friend answers 0.60 of the questions correct

bezimeni [28]

Answer:

Step-by-step explanation:

Assuming both players can answer the same question, the minimum number of questions is the smallest number that when multiplied by either 0.60 or 0.80 yields a whole number.

Let x be the number of questions, solving by trial and error:

$if\ x=2\\x*0.8=1.6\\x*0.6=1.2\\\\if\ x=3\\x*0.8=2.4\\x*0.6=1.8\\\\if\ x=4\\x*0.8=3.2\\x*0.6=2.4\\\\if\ x=5\\x*0.8=4\\x*0.6=3\\\\$

Therefore, the minimum number of questions in the game is 5.

5 0

3 years ago

How many kilograms are equal to 3,200 grams?

oksian1 [2.3K]

Answer:

3.2

Step-by-step explanation:

1000 grams in a kilogram

3200/1000=3.2

5 0

2 years ago

Read 2 more answers

On a map, a line 3 cm long represents 150 km. Find the scale to which the map is drawn by completing 1 mm to ? km.

soldi70 [24.7K]

Do 3 divided by 150 to get the answer

5 0

3 years ago

Nour drove from the Dead Sea up to Amman, and her altitude increased at a constant rate. When she began driving, her altitude wa

labwork [276]

Answer:

y = - 400 + 700x

Step-by-step explanation:

Nour's altitude increased at a constant rate from the Dead Sea up to Amman.

Initially, her altitude was 400 meters below from the sea level and then she arrived at an altitude was 1000 meters above sea level arrived to Amman, 2 hours later.

So, she moves (400 + 1000) = 1400 meters in 2 hours.

Therefore, her rate of change of altitude is $\frac{1400}{2} = 700$ meters per hour.

Therefore, if y represents Nour's altitude in meters relative to the sea level after x hours then the relationship between the altitude and number of hours is given by

y = - 400 + 700x (Answer)

7 0

2 years ago

Read 2 more answers

Write an equation for the parabola whose vertex is at (4, 12) and which passes through (5, 21)

laiz [17]

Answer:

y - 12 = 9(x - 4)

Step-by-step explanation:

The vertex (h, k) is (4, 12) and the point (5, 21) is on the graph. Assuming that this is a vertical parabola, opening up (because the coordinate 21 is greater than the coordinate 12), we insert the knowns into y - k = a(x - h)^2, obtaining

21 - 12 = a(5 - 4), or 9 = a. With a known, we can write the desired equation:

y - 12 = 9(x - 4)

8 0

2 years ago