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nordsb [41]
3 years ago
9

-3=\frac{x}{9} +3" alt="\frac{x}{3} -3=\frac{x}{9} +3" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
Tanya [424]3 years ago
7 0
The answer is : x=27
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Solve the proportion for n.<br> 1260/20=n/1
zzz [600]

Answer: n = 63

Step-by-step explanation:

1260/20 = n/1

63/1 = n/1

n = 63

4 0
2 years ago
Mr.Jenkins is buying paint to paint the garage wall. He needs to know the area of the wall in order to know how much how much pa
Keith_Richards [23]

Answer: (129.12 ft^2) / (24 ft^2/can) = 5.38 cans. Round this up to 6 cans. Please undrstand that this is only an example, since I do not know the actual dimenions of the wall

6 0
3 years ago
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What is the angle between the given vector and the positive direction of the x-axis?
jeka57 [31]

The angle is 75.52 degrees

If there is a vector with the form a i + b j, the cosine of the angle between the given vector and the positive direction of the x - axis is calculated as:

cos θ = a/\sqrt{a^{2}+b^{2}  }

So, given the vector i+\sqrt{15 j, the cosine of the angle between the vector and the x-axis is:

cos θ = 0.25

Therefore, the angle θ between the given vector and the positive direction of the x-axis is:

θ = cos-1(0.25) = 75.52

For more information about angles, visit

brainly.com/question/25661248

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6 0
1 year ago
A large company wants to administer a satisfaction survey to its current customers. Using their customer​ database, the company
shtirl [24]

Answer: Random

Step-by-step explanation:

  • In statistics , a random sampling technique is a simple sampling technique in which researcher choose 'n' individuals from N population , such that the chances for each individual to get selected are equal as \dfrac{1}{N}.

Here , the company wants to administer a satisfaction survey to its current customers.

So , Population → All current customers

Using their customer​ database, the company randomly selects 80 customers , it means each customer had the same chance to get selected.

Hence, the type of sampling is​ used : Random sampling

Hence, the correct answer is "Random" .

5 0
3 years ago
Find the following algebra, I am in class and plz give explanation
Lelechka [254]

1) Solving 4a+4b-ac-bc we get (a+b)(4-c)

2) Solving 16a^4-8b we get 8(2a^4-b)

3) Solving x^2-8x+15 we get (x-3)(x-5)

Step-by-step explanation:

We need to solve the following expressions:

1) 4a+4b-ac-bc

We will solve this expression by factoring common terms:

4a+4b-ac-bc

Factoring 4 from 4a+4b and -c from -ac-bc

4(a+b)-c(a+b)

Taking common term

(a+b)(4-c)

2) 16a^4-8b

We will solve this expression by factoring common terms:

16a^4-8b

Taking 8 as common term:

8(2a^4-b)

3) x^2-8x+15

We can solve the expression by breaking the middle term into 2

x^2-3x-5x+15\\Finding\,\,common:\\=x(x-3)-5(x-3)\\=(x-3)(x-5)

Keywords: Finding factors

Learn more about Finding factors at:

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  • brainly.com/question/1357167

#learnwithBrainly

6 0
2 years ago
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