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fiasKO [112]
3 years ago
11

Which of the following is equal to cos 40 degrees?

Mathematics
1 answer:
Olenka [21]3 years ago
5 0

Answer:

C. 50 degrees.

Step-by-step explanation:

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At the toll booth, the chance that a driver has exact change is 1/4, independent of vehicle. Find the probability that no vehicl
MAXImum [283]

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g

Step-by-step explanation:

 b

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3 years ago
What is that name of this figure​
Nataliya [291]

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A square

Step-by-step explanation:

6 0
3 years ago
The article on the next page from the San Francisco Chronicle, January 27, 1996, describes very serious problems of subsidence,
Mekhanik [1.2K]

Answer:

246.3%

the complete question is found in the attached document

Step-by-step explanation:

1st step:

using 1936 data,

w1= 356% = 3.56(356/100) , H= 79 feet

specific gravity = 2.65

Sₓ= 100%= 1

initial void ratio(e₀)= (w1 x specific gravity)/Sₓ

=3.56 x 2.65/1 = 9.434

2nd step

using 1996 data

ΔH= 22ft

ΔH/H = Δe/(1 + e₀)

22/79 = Δe/(1+9.434)

0.278=Δe/10.434

Δe= 0.278 x 10.434

Δe= 2.905

Δe= e₀ - eₓ

eₓ= e₀-Δe

eₓ= 9.434 - 2.905

eₓ= 6.529

3rd step

calculating water content in 1996

eₓ =6.529, specific gravity= 2.65, Sₓ= 100%

W2 X 2.65 = 1 x 6.529

w2 = 6.529/2.65 = 2.463 = 246.3%

6 0
4 years ago
I don't understand this very much, but if someone could give me an explanation, that would be appreciated! ×·×∡
Rama09 [41]

Answer:

<em>119.0 cm²</em>

Step-by-step explanation:

What is surface area

It is the area of the outside part of anything. Surface area is also called total surface area.

As we can see from the pyramid, it has a square base. How do I know that it is a square base, is by seeing the dimensions of the base, which are 6.4 cm by 6.4 cm in this pyramid. And we already know from basic Geometry that a square has 4 equal sides. So we call it a square pyramid.

So to find the total surface area of this square pyramid, we need the area of the 4 triangular faces and the area of the square base.

So t.s.a of the pyramid = 4 × Area of each triangular face + Area of the square base.

So, total surface area = Area of square base + Area of the four triangular faces.

     <em>total surface area</em> = (<em>length²) + (</em>4 × \frac{1}{2} × <em>base × height)</em>

<em>      t</em><em>otal surface area =</em><em> </em>(6.4 × 6.4) + (4 × \frac{1}{2} × 6.4 × 6.1)

     <em>total surface area = 40.96 + 78.08</em>

<em>      total surface area = 119.04 cm² ≈ 119.0 cm² (to the nearest tenth) (Answer)</em>

5 0
3 years ago
Read 2 more answers
Read the passage. Then write a paragraph that explains why the two ecosystems have such different kinds of plants. Use the terms
alex41 [277]

Answer:

Maybe the reason why the ecosystem has many different kinds of plants is because of the soil, or the environment around them. Also, maybe some biotic factors like animals or humans could be the reason. Maybe the humans have planted seeds there, and maybe some abiotic factors like soil could also be the reason why. And maybe the plants that grow there receive a lot of rain, or maybe the limiting factor is the rain, and the type of plants that grow there don't need much water to thrive.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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