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RoseWind [281]
2 years ago
14

I need help on my question hurry plsss

Mathematics
1 answer:
Svetradugi [14.3K]2 years ago
6 0

Answer:

B

Step-by-step explanation:

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The ratio of men to women to children at a concert was 3:5:2. If there were 360 more adults than children, how many people were
Vladimir79 [104]
The question narrows the groups down from 3 groups with men, women and children to 2 groups with adults and children. Combine the ratios of the men and the women to children to create this new ratio: (3+5):2 = 8:2. You can then simplify it to 4:1.

Let x be the number of children.

4:1 = (x+360) : x

Cross-multiply the two ratios to get the expression below, simplify and solve for x:

x + 360 = 4x
360 = 4x - x
360 = 3x
x = \frac{360}{3}
x = 120

Since there are 120 children, simply add the number of adults (360 more than this value as mentioned before) and you have your final answer:

total = 120 + (360 + 120)
total = 600

Hope this helped :)
7 0
3 years ago
Determine if x + 3 is a factor of -3x^3+6x^2+6x+9 How do you know
Reika [66]

Answer:

  x+3 is not a factor

Step-by-step explanation:

A graphing calculator shows the expression has a zero at x=3 and no other real zeros. If x+3 were a factor, there would be a zero at x = -3.

  x+3 is not a factor of the expression.

_____

You can check to see if x+3 is a factor by evaluating the expression for x=-3. If (x+3) is a factor, x=-3 will make the function be zero.

  3(-x³ +2x² +2x +3) = 3(((-x +2)x +2)x +3) = 3(((-(-3)+2)(-3) +2)(-3) +3)

  = 3((-15+2)(-3) +3) = 3(39 +3) = 126 ≠ 0

The expression evaluates to 126 at x=-3, so x+3 is NOT a factor.

7 0
2 years ago
Help please im struggling.
Hunter-Best [27]

Answer:

D. 2,2

Step-by-step explanation:

The midpoint just means the point in the middle of the line, and if you count inwards from each of the points, you'll find that D is the midpoint.

4 0
2 years ago
Read 2 more answers
In the diagram below of parallelogram ABCD with diagonals AC and BD, m∠1=45° and m∠DCB=120°.Whatisthemeasureof∠2?
bixtya [17]

Answer:

15degrees

Step-by-step explanation:

From the given diagram

<1+<2 + <DCB = 180

<1+<2+120 = 180

<1+<2 = 180 - 120

<1+<2 = 60

<2 = 60 - <1

<2 = 60 - 45

<2 = 15degrees

Hence the measure <2 is 15degree

5 0
2 years ago
Questions 18-30 pls help due tomorrow
Hitman42 [59]

Answer:

Step-by-step explanation:

30

7 0
1 year ago
Read 2 more answers
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