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4 years ago

Math question help pleaseee!

Mathematics

1 answer:

Lemur [1.5K]4 years ago

4 0

A entry terrace=(8*4)+(4*4/2)*2=48 ft2
A back porch=6*6=36 ft2
A play room=14*16=224 ft2
Aside deck=3*14=42 ft2
A total=48+36+224+42=350 ft2

The area entry terrace is 48 ft2

The area total is 350 ft2

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A commercial jetliner with an air speed of 640 mi/hr leaves Chicago and flies due west at the same time that a small single-engi

Vilka [71]

Answer:

40 mph

Step-by-step explanation:

The speed of separation of the two airplanes traveling in opposite directions is the sum of their respective airspeeds:

640 mi/h + 180 mi/h = 820 mi/h

At the time of interest, their separation distance is ...

1500 mi + 550 mi = 2050 mi

Then the time it took to achieve that separation was ...

time = distance/speed = (2050 mi)/(820 mi/h) = 2.5 h

The actual ground speed of the jetliner was ...

speed = distance/time = 1500 mi/(2.5 h) = 600 mi/h

Since the airspeed of the jet is 640 mi/h, the speed of the air must have subtracted 40 mi/h from its headway.

The wind from the west is 40 mi/h.

_____

Check

The wind adds to the speed of the small plane, so its ground speed is ...

180 mph +40 mph = 220 mph

and the distance it travels in 2.5 hours is ...

distance = speed × time = (220 mi/h)(2.5 h) = 550 mi

This value matches the problem statement, so the answer checks OK.

7 0

3 years ago

The area of a rectangular wall of a barn is 100 square feet. It’s length is 10 feet longer than twice it’s width. Find the lengt

lapo4ka [179]

Answer:

The length would be 30 and the width would be 20

Step-by-step explanation:

For the purpose of this, we'll set the width as x. We can then define the length as x + 10 since we know it is 10 ft longer than the width. Now we can use those along with the perimeter formula to solve for the width.

P = 2l + 2w

100 = 2(x + 10) + 2(x)

100 = 2x + 20 + 2x

100 = 4x + 20

80 = 4x

20 = x

Now since we know that the width is 20ft, we can add 10ft to it to get the length, which would be 30ft.

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3 years ago

Solve express the answer in simplest form. 1/5+w=7 1/3 w=__ _/_

andre [41]

1/5+w=7 1/3 7 1/3-1/5 -1/5 -1/5 7 5/15-3/15= 7 2/15 w= 7 2/15

3 0

4 years ago

The original blueprint of a concrete patio has a scale of 2 inches = 3 feet.

lyudmila [28]

Answer:

Scale of the new blueprint: 2 inches = 2.5 feet (or 4 inches = 5 feet)

Width of the new blueprint: 14.4 inches

Step-by-step explanation:

To solve this problem we can use rules of three to find each of the questions: blueprint's new scale and new width.

To find the new scale, we can find the real length of the patio first:

2 inches -> 3 feet

14 inches -> X feet

2/14 = 3/X

X = 21 feet

Now we can use this value to create the new scale:

16.8 inches -> 21 feet

2 inches -> X feet

16.8/2 = 21/X

X = 2*21/16.8 = 2.5 feet

So the new scale is 2 inches = 2.5 feet, or 4 inches = 5 feet

Now, to find the new width of the blueprint, we can do the following rule of three:

14 inches of length -> 16.8 inches of length

12 inches of width -> X inches of width

14/12 = 16.8/X

X = 12*16.8/14 = 14.4 inches

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3 years ago

Read 2 more answers

Can you conclude the triangles ate congruent? justify

allochka39001 [22]

Yes because two angles are given equal, there’s a 90° formed in them making the last unknown angle equal as well. the hash marks justifies that two of the lines are equal, they share a line making that equal, which means the last unknown measurement is equal.

7 0

3 years ago