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3 years 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]3 years 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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In ΔNOP, the measure of ∠P=90°, the measure of ∠N=59°, and PN = 7.4 feet. Find the length of OP to the nearest tenth of a foot.

lina2011 [118]

Answer:

12.3 feet.

Step-by-step explanation:

As we are given that $\triangle NOP$ is an right angled triangle.

$\angle P = 90 ^\circ \\\angle N = 59 ^\circ\\Side\ PN = 7.4 \text{ feet}$

And we have to find out the value of side OP to the nearest tenth of a foot by rounding off the value as seen in the attached figure as well.

By using Trigonometric functions in a right angled $\triangle$ , we know that:

$tan \theta = \frac{Perpendicular}{Base}$

Here, $\theta$ is $\angle N$ , Perpendicular is side OP and Base is side PN.

So, $tan 59^\circ = \frac{OP}{PN}$

$\Rightarrow OP = PN \times tan59^\circ$

Putting the values of PN and $tan59^\circ$ .

$OP = 1.66 \times 7.4\\\Rightarrow OP = 12.3 ft$

Hence, the value of OP is $12.3\ feet$ .

8 0

3 years ago

What is the value of the expression when h = 5? h + 7

taurus [48]

Answer:

Step-by-step explanation:

if h=5

then h+7 = 5+7 = 12

4 0

2 years ago

Read 2 more answers

What is the surface area in square yards

MaRussiya [10]

Answer:190

Step-by-step explanation:

area of triangles is 5*3=15

15+15=30

rectangles are (5*10)*2+(6*10)=160

160+30=190

5 0

2 years ago

REAL ANSWERS PLEASE AND NOT JUST FOR THE POINTS 20 EACH

Fed [463]

A+b=(-3n+2)+(5n-7)

=(5-3n)+(2-7)

=2n-5

Came up with the same answer as the first guy

4 0

3 years ago

I don’t know how to do this help :(

katen-ka-za [31]

A of trapezium = ((a+b)/2)(h)
A = ((10+10+4)/2)(8)
A = (24/2)(8)
A = 12(8)
A = 94
The area is 94ft²

5 0

3 years ago