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ki77a [65]
3 years ago
8

Two years ago Juanita bought 2 shirts for $15 and last year she bought 4 shirts for $45. Assuming the prices will increase linea

rly, how much will 8 shirts cost Juanita this year?
Mathematics
1 answer:
AleksandrR [38]3 years ago
8 0

Answer:

This year, Juanita will have to use $75.

Step-by-step explanation:

Because if 2 shirts is $15, 4 shirts will be $30. $45 is $15 more than $30, so the increase is $15. 2*4 is 8, so that will make it 15*4=60. 60+15=75.

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Please help me!!!! with both​
loris [4]

Answer:

Part 11)  a_n=a_{n-1}-16, a_1=17

Part 2) 4+3i

Step-by-step explanation:

Part 11) write a recursive rule for the sequence

17,1,-15,-31,...

Let

a_1=17\\a_2=1\\a_3=-15\\a_4=-31

we know that

a_2-a_1=1-17=-16 ----> a_2=a_1-16

a_3-a_2=-15-1=-16 ----> a_3=a_2-16

a_4-a_3=-31-15=-16 ----> a_4=a_3-16

This is an arithmetic sequence

In an Arithmetic Sequence the difference between one term and the next is a constant, and this constant is called the common difference (d).

In this problem the common difference is equal to d=-16

therefore

A recursive rule for the sequence is

a_n=a_{n-1}+d

substitute the value of d

a_n=a_{n-1}-16

where

a_1=17

Part 12) What is the complex conjugate of 4-3i?

we know that

The <u><em>complex conjugate</em></u> of a complex number is the number with an equal real part and an imaginary part equal in magnitude but opposite in sign

so

we have that

the real part of the given number is 4 and the the imaginary part is -3i

so

the imaginary part equal in magnitude but opposite in sign is +3i

therefore

the complex conjugate of the given number is equal to

4+3i

6 0
3 years ago
8. In a word game, you choose a tile from a bag, replace it, and then choose another. If there are 28 vowels and 12 consonants,
sasho [114]

Answer:

The probability that you will choose a consonant and then a vowel is 0.21....

Step-by-step explanation:

Total no of tiles = 28 + 12 = 40

First you should choose a consonant = 12/40

Second you should choose a vowel = 28/40

So the probability you choose a consonant and then a vowel:

= 12/40 * 28/40

=336/1600

=0.21

So the probability that you will choose a consonant and then a vowel is 0.21....

5 0
3 years ago
Căn 84 bình phương trừ 37 bình phương chia 47
BlackZzzverrR [31]

Answer:

\sqrt{84^{2} } -37^{2} /47=257 9/47

Step-by-step explanation:

3 0
3 years ago
Please help me out:)
swat32

Answer:

15cm

Step-by-step explanation:

circumfrince of a circle = pi

6 0
4 years ago
The graph of f passes through left parenthesis negative 4 comma 3 right parenthesis(−4,3) and is perpendicular to the line that
shusha [124]

Answer:

The answer to your question is y = -11/2x - 19

Step-by-step explanation:

Data

Point (-4, 3)

⊥ to the line x- intercept of 22 and y-intercept of -4.

Process

1.- Find the equation of the perpendicular line

This line has passes through the points  (22, 0) and (0, -4)

Slope = \frac{-4 - 0}{0 - 22} = \frac{-4}{-22} = \frac{2}{11}

2.- Find the slope of the new equation

Slope = \frac{-11}{2}    because the lines are perpendicular

3.- Find the equation of the new line

            y - 3 = -11/2 (x + 4)

            y - 3 = -11/2x - 44/2

            y - 3 = -11/2 x - 22

            y = -11/2 x - 22 + 3

            y = -11/2x - 19

See the graph below

4 0
3 years ago
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