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Alex_Xolod [135]
3 years ago
12

Please help me answer the question above.

Mathematics
1 answer:
Mars2501 [29]3 years ago
4 0
Total cost of tickets =3×21=63
After discount=63-(2×9)
=45
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Mike paid $18.00 before taxes for 5 photo albums. His sister wants to buy two of the same type of album. What amount should she
Reika [66]

Answer:

$7.2

Step-by-step explanation:

Mike paid $18 for 5 photos

= 18/5

= 3.6

His sister wants to purchase 2 of the same album

= 2 × 3.6

= 7.2

Hence she will pay $7.2 for the two albums

6 0
3 years ago
Read 2 more answers
Correct answer will get brainliest
Sophie [7]

Answer:

4.) Choice B

    &

5.) Choice A

Step-by-step explanation:

<em><u>Question 4:</u></em>

First you have to solve for y to get slope intercept form.

2x-5y=6\\5y=-2x+6\\y=-\frac{2}{5}x+\frac{6}{5}

The slope is a fraction but you need it to convert it to a decimal so that'll be Choice B.

<em><u>Question 5:</u></em>

For this one I we will use this formula m= \frac{y_{2}-y_{1}}{x_{2}-x_{1}}

I will choose the easy pairs to plug it in (-12,-2) (20,6)

\frac{6--2}{20--12}\\\\\\\frac{8}{32}=\frac{1}{4}

The slope is a fraction again but you can convert it and that'll be Choice A.

5 0
3 years ago
Find the number of multiples of 7 between 30 and 300. Is it 38?
Charra [1.4K]
In the above problem, you want to find the number of multiples of 7 between 30 and 300. 

This is an Arithmetic progression where you have n number of terms between 30 and 300 that are multiples of 7. So it is evident that the common difference here is 7.

Arithmetic progression is a sequence of numbers where each new number in the sequence is generated by adding a constant value (in the above case, it is 7) to the preceding number, called the common difference (d)

In the above case, the first number after 30 that is a multiple of 7 is 35

So first number (a) = 35

The last number in the sequence less than 300 that is a multiple of 7 is 294

So, last number (l) = 294

Common difference (d) = 7

The formula to find the number of terms in the sequence (n) is,

n = ((l - a) ÷ d) + 1 = ((294 - 35) ÷ 7) + 1 = (259 ÷ 7) + 1 = 37 + 1 = 38
3 0
3 years ago
A football player throws a football from 6 A the ground at an initial velocity of 60 per second. The path of the football can be
Mkey [24]

Answer:

16t 628h

Step-by-step explanation:

bwhjsbeuiqjwjshahahavs

6 0
4 years ago
Find the sum of the first 100 terms in the series
iVinArrow [24]
Hello,

\dfrac{1}{n} - \dfrac{1}{n+1} = \dfrac{1}{n(n+1)} \\&#10;&#10; \dfrac{1}{1*2} = \dfrac{1}{1} - \dfrac{1}{2} \\&#10;&#10; \dfrac{1}{2*3} = \dfrac{1}{2} - \dfrac{1}{3} \\&#10;&#10; \dfrac{1}{3*4} = \dfrac{1}{3} - \frac{1}{4} \\&#10;&#10;...\\&#10; \dfrac{1}{n*(n+1)} = \dfrac{1}{n} - \dfrac{1}{n+1} \\&#10;&#10;&#10;&#10;

Adding member by member, we have

\dfrac{1}{1*2} + \dfrac{1}{2*3} +\dfrac{1}{3*4} +...\dfrac{1}{n*(n+1)}=\\&#10; &#10;\dfrac{1}{1}  - \dfrac{1}{n+1} \\&#10;&#10;= \dfrac{n}{n+1} \\&#10;&#10;

if n=100 sum \boxed{= \dfrac{100}{101} }


3 0
3 years ago
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