2 years ago

Jackie created a diagonal cross section cut on a sphere. What plane figure did she discover after making the cut?

Mathematics

1 answer:

Rasek [7]2 years ago

5 0

Answer:

Rectangle

Step-by-step explanation:

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skis at a sports store near snow summit are on sale for $476. if the original price was $560, what discount rate does this repre

trapecia [35]

The answer would be 560-476 equals 84

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3 years ago

A man is four times as old as his son. 10 years later, the man will be three times as old as his son. What is the man’s current

kvasek [131]

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The son is 20 and the father is 80.

Step-by-step explanation:

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2 years ago

Read 2 more answers

An arithmetic sequence has a1 = 22 and a8 = 43. Find a15.

brilliants [131]

The 15th term of the arithmetic sequence $a_{15} = 64$

Option B is correct

The nth term of an arithmetic sequence is given as:

$a_{n} = a + (n - 1)d$

The first value, a = 22

$a_8 = a+(8 - 1)d\\a_8 = a + 7d$

Since $a_8 = 43$

$43 = 22 + 7d\\7d = 43 - 22\\7d = 21\\d = \frac{21}{7}\\d = 3$

The common difference, d = 3

$a_{15}= a + (15-1)d\\a_{15} = a + 14d\\a_{15} = 22 + 14(3)\\a_{15} = 22 + 42\\a_{15} = 64$

The 15th term of the arithmetic sequence = 64

Learn more here: brainly.com/question/24072079

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1 year ago

Pleaseeeee helppppp I’ll mark you brainlist

SashulF [63]

I’m not good at maths thank me later

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2 years ago

Use the substitution methods to solve the system of equations. Choose the correct ordered pair. y=7x+8 y=x+20

krek1111 [17]

Answer:

Step-by-step explanation:

Solution by substitution method

y=7x+8

∴y-7x=8

and y=x+20

∴y-x=20

Suppose,

-7x+y=8→(1)

and -x+y=20→(2)

Taking equation (1), we have

-7x+y=8

⇒y=7x+8→(3)

Putting y=7x+8 in equation (2), we get

-x + 7x + 8 = 20

6x = 20-8

6x = 12

x= 12 / 6

x = 2

substitute for x in equation (3)

y = 7(x) + 8

y = 7(2) + 8

y = 22

4 0

2 years ago