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3 years ago

Pleeeeeeeeease help!!!!!!!

Mathematics

1 answer:

77julia77 [94]3 years ago

7 0

Answer:

x = 11

Step-by-step explanation:

If a radius bisects a chord ( as in the lower chord )then it is perpendicular to the chord.

Thus both chords are equidistant from the centre ( both 12 ) and are therefore congruent.

Hence x = 11

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What is the discontinuity of the function f(x) = x^2 - 3x -28 / x + 4

lakkis [162]

A discontinuity occurs when the denominator equals zero

it will be either a hole or an asymptote

x+4 = 0

subtract 4 from each side

x=-4

7 0

3 years ago

Read 2 more answers

A car travels along a straight stretch of road. It proceeds for 16.2 mi at 57 mi/h, then 24.6 mi at 44 mi/h, and finally 45.1 mi

LekaFEV [45]

Answer:

The average velocity the entire trip was 43.25 mi/h

Step-by-step explanation:

In this case we have to calculate an average based on the miles traveled. First we have to calculate the total of miles traveled, then calculate the portion of the total travel of each and with this calculate the average speed during the trip. First the total miles traveled:

$TotalMiles=16.2+24.6+45.1=85.9$

Now the percentages:

At 57 mi/h were $\frac{16.2}{85.9}=0.19$

At 44 mi/h were $\frac{24.6}{85.9}=0.29$

At 37.8 mi/h were $\frac{45.1}{85.9}=0.52$

Now multiplying the speed by the portion and summing them we can have the average velocity:

$57*0.19+44*0.29+37.8*0.52=43.25$

The average velocity the entire trip was 43.25 mi/h

5 0

3 years ago

James opened a savings account with $425. After 2 years, the total interest he earned was $10.20. What was the annual interest r

SashulF [63]

Answer:

She has saved $1000 land wants to open an account at the bank so where she earns a simple interest rate of 10/%. If she does ... t years,. • Pis the principal amount (the amount borrowed or invested) ... If he waits 2 years? or 3 years to pay back ... annually. How much money will Jack have after 1 year? 2 years? 5 years? 10

Step-by-step explanation:

8 0

3 years ago

Need help for this please

EastWind [94]

The perimeter is about 82 yards

first, the perimeter of the rectangles is 30*2 = 60 (the 7 is not a part of the overall perimeter so we do not need to add it)

the "perimeter" (circumference) of the 2 semi circles = (22/7)*7 = 22by using the formula C = pi*d (2 semi circles of the same diamter = 1 circle)

now just add the 2 answers
22 + 60

= 82 yards

4 0

3 years ago

The manager of the zoo where the ticket price for an adult is $9.50 and the ticket price for a child is $6.50 wants to make at l

Y_Kistochka [10]

Answer:

$9.5x+6.5y\geq $800$

Step-by-step explanation:

9.5 in value of adult tickets. 6.5 is value of children's tickets. combined selling of all of them should be greater than or equal to 800 ("atleast" in the question shows it can be more but cannot be less)

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3 years ago