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Sergeeva-Olga [200]

2 years ago

12

a 28 foot ladder is leaning against a building.if the base of the ladder is 7 foot from the wall,what is the height of the build

ing

1 answer:

inysia [295]2 years ago

6 0

Answer:

4

Step-by-step explanation:

7 x 4 = 28 also 28 divided by 7 would be 4

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Two planes A and B start from the same place and move in different directions making an angle of 50° between them the speed of p

Alika [10]

Answer:

The distance between them is 230.65 miles

Step-by-step explanation:

Here we use the Cosine formula

$a^2 = b^2 + c^2 - 2bc\ cos\ A\\\\a^2 = 200^2 + 300^2 - 2\times 200\times 300cos50^{\circ}\\\\= 40,000 + 90,000 - 120,000cos50^{\circ}\\\\= 130,000 - 120,000 \times 0.64\\\\= 130,000 - 76,800\\\\a^2= 53,200\\\\a = \sqrt{53,200} \\\\= 230.65\ miles\ per\ hour$

Now the distance for one hour is

= 230.65 ÷ 1

= 230.65 miles

4 0

2 years ago

There were three quizzes for the week. The first quiz was worth twice as much as the second quiz. The third quiz was 10 points l

iren2701 [21]

X+y+z=70
x=2y
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6 0

2 years ago

Which angle measures about 60°?

lord [1]

Answer:

c

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Find 3 consecutive even numbers where the product of the smaller two numbers is 40 less than the square of the largest number.

Marina86 [1]

$3\ consecutive\ even\ numbers:\ 2x,2x+2,2x+4\\\\2x(2x+2)+40=(2x+4)^2\\\\
4x^2+4x+40=4x^2+16x+16\\\\
4x^2-4x^2+4x-16x=16-40\\\\-12x=-24\ \ |:(-12)\\\\x=\frac{24}{12}=2\\\\2x=2=4\\\\2x+2=6\\\\2x+4=8\\\\Numbers\ are\ 4,6,8.$

5 0

2 years ago

Find the image of A(-2,4) under a translation (x,y)->(x-2,y-3)

vichka [17]

Answer:

Point A would be at the coordinates, (-4, 1). Hope this helps!

4 0

1 year ago