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hammer [34]
3 years ago
10

How do you solve this can someone help me pls

Mathematics
1 answer:
horrorfan [7]3 years ago
5 0

Answer:

x-8°+20°= 90°

=>x+12°=90°

=>x=90°-12°

=>x= 78°

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Two friends Ana and Juan are buying books by joining the History Book
Travka [436]

Answer:

Ana  spent $17  per book on average.

Juan  spent $14.78  per book on average.

y = $15 + 17x--------- equation 1

y= $10 + 14.78 x------------- equation 2

Step-by-step explanation:

Ana has to pay a yearly fee of $15 to join.

She spends a total of $525 for 30 books.

The amount spent on books = Total amount - yearly fee

                                                 = $525- $15= $510

Price per book on the average = $510/30= $ 17

Ana  spent $17  per book on average.

Juan has to pay a yearly fee of $10 to join.

He spends a total of $350 for 23 books.

The amount spent on books = Total amount - yearly fee

                                                 = $350- $10= $340

Price per book on the average = $340/23= $ 14.78≅ $15

Juan  spent $14.78  per book on average.

The function can be established if y gives the total cost and x gives the number of books

y = $15 + 17x--------- equation 1

y= $10 + 14.78 x------------- equation 2

Juan has a better deal because the yearly fee is less also the price per book is less.

8 0
3 years ago
84 divided by 6 distributive property
KATRIN_1 [288]
Eighty four divided by 6 is 14
3 0
3 years ago
What is the range of F(x)=72x-x^2
Marianna [84]

Answer:

Range of F(x) = (-∞ ,72).

Step-by-step explanation:

Range of the function F(x) means the set of values which are taken by the function along its domain.

F(x) = 72 - x^{2}

Since coefficient of x^{2} is negative on the right side ,

Maximum value of F(x) will come at x = 0.

Which is, F(0) = 72.

Now, as x increases , F(x) decreases , when x will reach infinity ,

F(x) will be reaching negative of infinity .

Thus, F(x) is ranging from -∞ to 72 .

Range of F(x) = (-∞ ,72).

3 0
3 years ago
What is 4% of 50,000
tamaranim1 [39]
4% of 50000
(4/100) * 50000
2000
7 0
3 years ago
Read 2 more answers
At what speed in miles per hour will a bicycle travel if the rider can cause the 26-inch diameter wheel to rotate 90 revolutions
Sati [7]
26' wheel @ 90 rpms = 2,340 inches / min   (26 x 90)

2,340 inches / min = 140,400 inches / hour  (2,340 x 60)

140,400 inches / hour = 11,700 feet / hour   (140,400 / 12)

11,700 feet / hour = approx. 2.216 miles / hour   (11,700 / 5,280)
8 0
3 years ago
Read 2 more answers
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