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2 years ago

What is the value of 2cos2(105⁰) − 1?

Mathematics

2 answers:

uysha [10]2 years ago

4 0

Step-by-step explanation:

-1 - root3

Liula [17]2 years ago

3 0

Answer:

A) -√3/2

Step-by-step explanation:

edge 2020

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Ling spent $23.96 on cooking fuel for an upcoming camping trip. If she bought 4 cans of fuel, how much did she pay for each can?

soldier1979 [14.2K]

Answer: 5.99

Step-by-step explanation:

Ling spent $23.96 on cooking fuel for an upcoming camping trip.

Total number of cans of cooking fuel bought = 4

So, the cost of each can = dollars

Hence, Ling paid $5.99 for each can of cooking fuel.

6 0

3 years ago

Read 2 more answers

1. A student lifts a box of books that weighs 200 N. The box is lifted 2.5 m. How much work

Angelina_Jolie [31]

The student does a work of 500 Newton meter on the box.

Step-by-step explanation:

Given,

Weight of box of books = force = 200 N

Distance the box is lifted = 2.5 m

Work done = Force * distance

Work done = $200*2.5$

Work done = 500 Newton-meter

Newton meter is same as Joule.

Work done = 500 Joules

The student does a work of 500 Newton meter on the box.

Keywords: multiplication, work done

Learn more about multiplication at:

#LearnwithBrainly

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3 years ago

Simplify -0.5i - i.<br> Enter your answer in the box.<br> help asap please

leonid [27]

The answer would be -1.5i

6 0

2 years ago

Read 2 more answers

A builder was building a fence. In the morning, he worked for 2/5 of an hour. In the afternoon, he worked for 9/10 of an hour. H

guajiro [1.7K]

Answer:believe it’s 12

Step-by-step explanation:

3 0

3 years ago

t hits the square dartboard shown below at a random point. Find the probability that the dart lands in the shaded circular regio

masha68 [24]

Given:

Required:

To find the probability that the dart land will be in the shaded region.

Explanation:

Area of the circle is given by the formula:

$A=\pi r^2$

Where r = radius

Thus the area of the circular region

$\begin{gathered} =(3.14)\times(2)^2 \\ =3.14\times4 \\ =12.56\text{ square in.} \end{gathered}$

The area of the square is given by the formula:

$=(side)^2$

Thus the area of the given square

$\begin{gathered} =(6)^2 \\ =36\text{ square in.} \end{gathered}$

The probability of an event is given by the formula:

$P=\frac{number\text{ of possible outcomes}}{Total\text{ number of outcomes}}$

The probability that the dart land will be in the shaded region

$=\frac{Area\text{ of the shaded region}}{Area\text{ of the square}}$

Thus probability

$\begin{gathered} P=\frac{12.56}{36} \\ P=0.3488 \\ P=0.349 \end{gathered}$

Final answer:

Thus the probability that the dart land will be in the shaded region is 0.349.

6 0

1 year ago