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1 year ago

A factory uses 15 pounds of steel for every 18 pounds of copper. How much copper will the factory use for 2,700 pounds of steel?

Mathematics

1 answer:

Nostrana [21]1 year ago

3 0

Answer:

3240 pounds of copper would be used

Step-by-step explanation:

$\frac{18}{15}=\frac{x}{2700} \\(2700)*(\frac{18}{15})=x\\3240lbs=x$

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Simplify this equation<br> -5x+7>22

Lana71 [14]

Answer:

Step-by-step explanation:

$- 5x + 7 > 22$

Move 7 to the other side of the inequality

$- 5x > 22 - 7 \\ - 5x > 15$

Divide both sides by - 5

$\frac{ - 5x}{5} > - \frac{15}{5} \\ x > - 3$

Reverse the sign

We have the final answer as

Hope this helps you

4 0

2 years ago

Plz ASAP you will get brainliest and a lot of points if you jus answer it

Annette [7]

Answer:

radius 12 units = 452.16 units²

diameter 16.8 units = 221.5584 units²

radius 3.4 units = 36.2984 units²

diameter 10 units = 78.5 units²

Formula for area of circle: $\pi r^{2}$

5 0

2 years ago

Read 2 more answers

This question made me stuck lol.. I really need help

Svetach [21]

(4,5)(2,1)
slope = (1 - 5) / (2 - 4) = -4/-2 = 2

(-2,3)(-4,4)
slope = (4 - 3) / (-4 - (-2) = 1/(-4 + 2) = -1/2

2 and -1/2 are negative reciprocals of each other....therefore, ur lines are perpendicular <==

5 0

2 years ago

One hen lays 7 eggs in three days.<br>How many eggs do three hens lay in nine days?

kramer

Answer:

63 eggs.

Step-by-step explanation:

7 times 3 equals 21, which is the amount of eggs one chicken lays in 9 days. Multiply that by 3, you get 63.

3 0

2 years ago

Read 2 more answers

HELP PLZ PICK ONE OF THE ONES SHOWN:

defon

I am doing with Question Number 2

Let the two numbers be 'x' and 'y'.

According to the question, the product of two numbers is 14.

$x \times y=14$

So, xy=14 (Equation 1)

Now, one of the numbers is 3 ½ times the other.

So, $x = 3\frac{1}{2}\times y$

$x=\frac{7}{2}y$ (Equation 2)

Substituting the value of 'x' from equation 2 in equation 1, we get

$\frac{7}{2}y \times y = 14$

$\frac{7}{2}y^{2} = 14$

$y^{2} = 4$

So, y= 2 and -2

So, $x=\frac{14}{2}$ and $x=\frac{14}{-2}$

x=7 and -7

Numbers are 2,7 and -2,-7.

Sum of numbers 2 and 7 = 9

Sum of numbers -2 and -7 = -9.

6 0

2 years ago