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Evgen [1.6K]
3 years ago
5

The principal at Marina Middle School wants to determine if the 120 students in the seventh grade prefer to visit Catalina Islan

d or Camp Mosaic for their end-of-year trip. Which of the following is a representative sample of the population? Select all that apply.
Mathematics
1 answer:
miss Akunina [59]3 years ago
3 0
Wow excellent wonder you are a very nice guy with your work
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A student solved log4(2x – 12) = 3, as shown. Which did you include in your answer?
siniylev [52]

Answer:

x = 38

Step-by-step explanation:

using the law of logarithms

• log_{b} x = n ⇔ x = b^{n}, hence

log_{4}(2x - 12) = 3 ⇒ 2x - 12 =  4^{3} = 64

add 12 to both sides

2x = 76 ( divide both sides by 2 )

x = 38


5 0
3 years ago
Helppp I need this turned in!!!
Marizza181 [45]

Answer:

Step-by-step explanation:

-10 ( y-4) + 3y = 5   <--- substitute the value of x into first equation

-10y + 40 + 3y = 5

-7y + 40 = 5

-7y = -35

y= 5

x = 5 - 4

x = 1

7 0
3 years ago
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A store had a grand opening sale. During the sale, each person entering the store received
marysya [2.9K]
Can you post another picture of the question?
4 0
3 years ago
Solve the equation by completing the square. Round to the nearest hundredth if necessary. x^2 + 2x = 17
earnstyle [38]

Answer:

<h2>x = -5.24 or x = 3.24</h2>

Step-by-step explanation:

(a+b)^2=a^2+2ab+b^2\qquad(8)\\\\x^2+2x=17\\\\x^2+(2)(x)(1)=17\qquad\text{add}\ 1^2\ \text{to both sides}\\\\\underbrace{x^2+(2)(x)(1)+1^2}_{(*)}=17+1^2\\\\(x+1)^2=18\iff x+1=\pm\sqrt{18}\qquad\text{subtract 1 from both sides}\\\\x=-1\pm\sqrt{18}\\\\x\approx-1-4.24=-5.24\ \vee\ x\approx-1+4.24=3.24

4 0
3 years ago
Two numbers whose sum is -1 and product is -20
enyata [817]

Answer:

Let the two numbers be x and y.

Then x + y = 20, and y = 20 - x.

Their product is what you get when you multiply the two numbers together, in other words xy, or x(20 - x). You can expand this out to get 20x - x².

The product of the two numbers will be maximum at the value

Step-by-step explanation:

sorry if this didn't help

3 0
3 years ago
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