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3 years ago

Solve this step by step

Mathematics

1 answer:

Kaylis [27]3 years ago

8 0

Step-by-step explanation:

the formula to calculate a circumference is

$x \times \pi$

(consider x as the diameter)

so I'll be noting the circumference as C alongside the circle's ranking

$ca = 6 \times 22 \div 7 \\ = 44 \div 7$

$cb = 7 \times 22 \div 7 \\ = 154 \div 7 \\ = 22$

$cc \: = 4 \times 22 \div 7 \\ = 88 \div 7$

hope I helped

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Shaun is picking out some movies to rent, and he is primarily interested in documentaries and mysteries. He has narrowed down hi

ycow [4]

Answer:

The total number of combinations in which the movies can be rented such that there is at least one documentary is 27589.

Step-by-step explanation:

The total movies are given as 19 mysteries +12 documentaries=19+12=31

Now the number of total combinations such that 4 movies are rented is given as $^{31}C_4=31465$

Now the number of total combinations with no documentary is given as

$^{19}C_4=3876$

So the number of combination such that at least one movie is documentary is given as

=Total Combinations-Combinations with no documentary

=31465-3876

=27589

So the total number of combinations in which the movies can be rented such that there is at least one documentary is 27589.

7 0

4 years ago

The number of patients who reported that a new drug had relieved their pain. discrete or continuous?

solong [7]

Answer:

Continuously

Step-by-step explanation:

Continuously

4 0

3 years ago

Two trains leave stations 320 miles apart at the same time and travel toward each other. One train travels at 105 miles per hour

tamaranim1 [39]

Answer:

1.6 hours / 1 hour 36 minutes

Step-by-step explanation:

105+95=200 miles

This is the distance that the trains could travel in an hour.

320÷200=1.6 hours

Our Answer is 1.6 hours / 1 hour 36 minutes

3 0

3 years ago

Deandre's goal is to find a job that provides an income of at least $75,000 a year. Ashley's Furniture offers him a job paying a

alekssr [168]

Answer:

at least $1,050,000

Step-by-step explanation:

Deandre's salary will be ...

12000 + 0.06·sales

He wants that to be at least 75000, so the sales must meet the requirement ...

12000 + 0.06·sales ≥ 75000

0.06·sales ≥ 63000 . . . . . . . . . . . . subtract 12000

sales ≥ 63000/0.06 . . . . . . . . . . . .divide by 0.06

sales ≥ 1,050,000 . . . . . . . . . . . . . .evaluate

He will need to have at least $1,050,000 in total sales to have a yearly income at least $75,000.

3 0

3 years ago

Pls pls pls helppp ------------------

aliina [53]

Answer:

$\fbox {x-intercepts : (1, 0) and (-3, 0)}$

$\fbox {Roots : x = 1, x = -3}$

Step-by-step explanation:

Given :

y = 4x² + 8x - 12

4 cancels throughout.

y = x² + 2x - 4

Solving by quadratic formula :

x = -8 ± √(8)² - 4(4)(-12) / 8
x = -8 ± √64 + 192 / 8
x = -8 ± √256 / 8
x = -8 ± 16 / 8
x = -1 ± 2
x = 1 and x = -3

∴ Hence, the x-intercepts are (1, 0) and (-3, 0). The roots of the equation are 1 and -3.

7 0

2 years ago

Read 2 more answers