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MA_775_DIABLO [31]
3 years ago
8

The formula below gives the area of a semi-circle, A, with a radius of r.

Mathematics
1 answer:
ch4aika [34]3 years ago
4 0
Please provide the formula for me to answer
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Find the value of x. Will mark brainliest.
Margaret [11]

Answer:

x = 8

Step-by-step explanation:

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3 years ago
Kathy is a repair technician for a phone company. each week, she receives a batch of phones that need repairs. the number of pho
SCORPION-xisa [38]
We have equation:
p=108-23d

p = number of phones left to repair
108 = initial amount at the start of week
23 = number of phones repaired each day
d = number of days she worked that week
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3 years ago
Jamie draws a triangle he says two of my three angles are obtuse
Vikentia [17]
A triangle's interior angles will always add up to 180 degrees.

When one interior angle gets larger, the other angles must decrease in size.

If you attempt to make a triangle with two obtuse angles, you will find you can't do it in three lines. But you need an extra line in order to close the shape. But it won't be a triangle.
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3 years ago
Jackie has a prepaid Green Phone that charges 22 cents per text message sent or received. Jackie prepays $40 on her phone.
anyanavicka [17]
Hi there !

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5 0
3 years ago
The question is in the picture.
dangina [55]
<h2><u>Part A:</u></h2>

Let's denote no of seats in first row with r1 , second row with r2.....and so on.

r1=5

Since next row will have 10 additional row each time when we move to next row,

So,

r2=5+10=15

r3=15+10=25

<u>Using the terms r1,r2 and r3 , we can find explicit formula</u>

r1=5=5+0=5+0×10=5+(1-1)×10

r2=15=5+10=5+(2-1)×10

r3=25=5+20=5+(3-1)×10

<u>So for nth row,</u>

rn=5+(n-1)×10

Since 5=r1 and 10=common difference (d)

rn=r1+(n-1)d

Since 'a' is a convention term for 1st term,

<h3><u>⇒</u><u>rn=a+(n-1)d</u></h3>

which is an explicit formula to find no of seats in any given row.

<h2><u>Part B:</u></h2>

Using above explicit formula, we can calculate no of seats in 7th row,

r7=5+(7-1)×10

r7=5+(7-1)×10 =5+6×10

r7=5+(7-1)×10 =5+6×10 =65

which is the no of seats in 7th row.

8 0
3 years ago
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