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2 years ago

What is - 3x - ( - 2 - 4x ) if x equals 5

Mathematics

1 answer:

m_a_m_a [10]2 years ago

7 0

It would be 7 because -3 times 5

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At the beginning of the day there were 90 little fish in the pond.At the end of the day there were 52 little fish in the pond.Fi

balu736 [363]

Answer:

42%

Step-by-step explanation:

The first step is to calculate the difference in the number of fishes from the beginning of the day to the end of the day.

90 -52

= 38 fishes

Therefore the percent decrease can be calculated as follows

= 38/90 × 100

= 0.422 × 100

= 42.2 %

= 42% ( to the nearest cent)

8 0

2 years ago

1) The angle of elevation of the top of the building at a distance of 50 m from its foot on a horizontal

seropon [69]

Answer:

the height of the building is 86.6m

Step-by-step explanation:

In the right triangle, the height which we are looking for is the opposite side, since it is opposite to the angle 60°

Now we need to find the height of the building

tanθ = Opposite side/Adjacent side

tan 60° = Opp side/Adj side

1.7321 = Opp side/50

1.7321 x 50 = Opp side

Opp side = 50 x 1.7321

Opp side = 86.6 m

Therefore, the height of the building is 86.6m.

8 0

2 years ago

HELP PLEASE!

wel

Answers:

$\text{Perimeter} = 14\sqrt{5}\\\\\text{Area} = 50\\\\$

=======================================================

Work Shown:

$L = 2\sqrt{5} = \text{length}$

$W = 5\sqrt{5} = \text{width}$

P = perimeter

$P = 2*(L+W)\\\\P = 2*(2\sqrt{5}+5\sqrt{5})\\\\P = 2*(7\sqrt{5})\\\\P = 14\sqrt{5}\\\\$

-------------

A = area

$A = L*W\\\\A = (2\sqrt{5})*(5\sqrt{5})\\\\A = (2*5)(\sqrt{5}*\sqrt{5})\\\\A = 10\sqrt{5*5}\\\\A = 10\sqrt{25}\\\\A = 10*5\\\\A = 50\\\\$

3 0

2 years ago

Read 2 more answers

In the diagram below, de is parallel to xy. What is the value of y?

IRISSAK [1]

Y=94 (B) because of angle rules

6 0

2 years ago

find the area of the following shape. A(-5,-8) B(1,-8) C(3,-5) D(1,0) E(-5,-3) F(-3,-6). just show work

Juliette [100K]

Check the picture below

so hmmm, all you really have is 4 triangles and 1 rectangle, notice the bases and altitude of each triangle

so, get the area of each, sum them up, and that's the area of the shape

6 0

2 years ago