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vfiekz [6]
1 year ago
9

If −x+5y=7 is a true equation, what would be the value of -2(-x+5y)

Mathematics
1 answer:
Alecsey [184]1 year ago
4 0

Answer:

-14

Step-by-step explanation:

Given -x+5y=7

Now we substitute x+5y into -2(-x+5y)

-2(-x+5y) = (-2)(7)

= - 14

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An art teacher needs to 5 boxes of markrrs to complete a project with a class of 20 students. How many boxes of markers will he
sleet_krkn [62]

20students : 5 boxes

Divided by 5

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28/4 = 7

28students : 7 boxes

4 0
3 years ago
4 + (11 - 3)^2 simplified answer fast pls
ValentinkaMS [17]

Answer:

68

Step-by-step explanation:

4 + (11 - 3)^2

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3 0
3 years ago
The population of a local species of beetle can be found using an infinite geometric series where a1 = 880 and the common ratio
nasty-shy [4]
<span>Data:

infinite geometric series

A1 = 880

r = 1 / 4

The sum of a geometric series  in sigma notation is:

  n              1 - r^n
 ∑ Ai = A ----------- ; where A = A1
i = 1             1-r

 When | r | < 1 the infinite sum exists and is equal to</span><span><span>:

  ∞               A
 ∑ Ai =   ---------- ; where A = A1
i = 1          1 - r</span>

So, in this case</span><span><span>:

  ∞               880
 ∑ Ai =    -------------- = 4 * 880 / 3 = 3520 /3 = 1173 + 1/3
i = 1         1 - (1/4)</span>  </span>

Answer: 1173 and 1/3
6 0
3 years ago
1. Kelly has n apples. Priya has twice as many apples as Kelly. How many apples does Priya have?
iragen [17]
1( n * 2) 
2(n+2*x)
 
i hope this helps the question wasn't very specific
6 0
3 years ago
PLZ ANSWER ASAP PLZ Which is a solution to the equation 4b2 − 11b = 28 + 5b2? A) −5 B) −4 C) −3 D) 4
Dovator [93]
D) 4
i think this is right
7 0
3 years ago
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