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11Alexandr11 [23.1K]
3 years ago
13

Which of the following expressions are equivalent?

Mathematics
1 answer:
Mnenie [13.5K]3 years ago
6 0

Answer:

1. 6(a + 2)

6a + 12

2. 6a + 12

3. 3(2a + 4)

6a + 12

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At an university 70% of the students who attend stay on campus. If 1,380 of the students who attend live off campus, what is the
Alborosie

Answer:

4600

Step-by-step explanation:

We can write a proportion to find the total amount who attend university using the information given. A proportion is two equivalent ratios set equal to each other. Since 70% live on campus, then 30% live off campus and we are told that number is 1,380.

\frac{30}{100}=\frac{1380}{y}

We will cross multiply the numerator of one ratio with denominator of the other. And then solve for y.

30y=100(1380)

30y=138000

y=4600.

There are 4600 students who attend the university.

7 0
3 years ago
(2+5xyz-6tv²c)-(11-5yxz-2ctv²)​
Effectus [21]

Answer:

-4ctv² + 10xyz - 9

Step-by-step explanation:

(2 + 5xyz - 6tv²c) - (11 - 5yxz - 2ctv²)

2 + 5xyz - 6tv²c - 11 + 5yxz + 2ctv²

-4ctv² + 10xyz - 9

I hope this helps!

5 0
2 years ago
Evaluate 8 into 5 /-4<br> i will give you Brainliest<br> 15 points
vlabodo [156]
It’s -10
Explanation: 8 x 5= 40
40/-4= -10
3 0
3 years ago
Read 2 more answers
9y + 6 + 2(5 + y) = blank y + blank
maria [59]

Answer:

<h2><em>1</em><em>1</em><em>y</em><em>+</em><em>1</em><em>6</em></h2>

<em>Solution</em><em>,</em>

<em>9y + 6 + 2(5 + y) \\  = 9y + 6 + 10 + 2y \\  combine \: like \: terms \\  = 9y + 2y + 6 + 10 \\ simplify \\  = 11y + 16</em>

<em>hope </em><em>this </em><em>helps.</em><em>.</em><em>.</em>

<em>Good </em><em>luck</em><em> on</em><em> your</em><em> assignment</em><em>.</em><em>.</em>

5 0
3 years ago
Read 2 more answers
What is the domain of the function?<br><br> y= sqrt 5x-10
Andrews [41]

I don't know if this will help but I found this on YAHOO!

Answer: Domain of definition of a function is the set of numbers which the variable attains and for which the function is defined.

Step-by-step explanation:

f(x) = sqrt (5x-10)

Here x can have value equal to any real number >=2 because if x attains value less that 2, 5x-10 becomes negative and sqrt(5x-10) has no real value.

therefore the domain of the function f(x) is (2, infinity) inclusive of 2.

8 0
3 years ago
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