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Vinil7 [7]
3 years ago
11

Use elimination to solve the system of equations given by 3x+ 4y= 5 and 21x+ 28y= 35.

Mathematics
1 answer:
neonofarm [45]3 years ago
3 0

Answer:

(5/4-3/4)

divide both sides by -7 then line them up and solve the equation and delete one variable.

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Find the surface area of the solid given the net
vivado [14]
Surface area = 17*(sqrt(1155) + 19)

h^2 = 19^2 - 17^2/4
=> h = sqrt(4*19^2 - 17^2)/2 = sqrt(1155)/2
Surface area = 4(1/2*h*17) + 17*19 = 17(sqrt(1155) + 19)
7 0
3 years ago
An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and unloading riders more effic
yaroslaw [1]

Answer:49.... yep

Step-by-step explanation: 49,,,

8 0
3 years ago
The probability is 0.2 that a person shopping at a certain store will spend less than $20. For groups of size 17, find the mean
antiseptic1488 [7]

Steps:

1: p=0.2

2: n = 17

3: n*p= 17*0.2=3.4

Description:

The person will spend less than 20 or o.2 as seen in the question. Meaning p will equal 0.2. P for probability. Now n is for number. n will equal 17. And then we have to times all the number. N times P will equal 17 then times it by 0.2=  Answer will come as 3.4.

Answer: 3.4

The correct answer for this question is 3.4

Please mark brainliest

<em><u>Hope this helps.</u></em>

6 0
3 years ago
Paul plans to buy a movie that has a regular price of $19.99. It is on sale for 25% off, but Paul will have to pay 6% sales tax.
marissa [1.9K]
B is your answer for this question
3 0
3 years ago
Read 2 more answers
Two or more complete sentences, explain how to use ordered pairs of points in f(x) and g(x) to determine if f(x) and g(x) are in
kati45 [8]
If f(x) is an inverse of g(x),

when
f(x)=y
g(y)=x

aka
f(g(x))=x
g(f(x))=x


basically, the values should be swiched

example
f(x)=
(1,2)
(2,3)
(4,5)
then g(x)=
(2,1)
(3,2)
(5,4)
6 0
4 years ago
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