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Yuri [45]
3 years ago
6

Helpppppp!!!!!!!!!!!

Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
6 0
Answer is A. first choice

Aver. 14 - 17 years old = 75/11 = 6.8
Aver. 10 - 13 years old = 47/11 = 4.27
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Can someone help me out? Pls it’s urgent!!! ASAP! (Geometry)<br> “Complete the proof”
Nikitich [7]

1) \overline{WX} \cong \overline{UY}, \angle YXZ \cong \angle XYZ (given)

2) \overline{XY} \perp \overline{XY} (reflexive property)

3) \triangle WXY \cong \triangle UYX (SAS)

4) \overline{WY} \perp\overline{ UX} (CPCTC)

6 0
2 years ago
Ratio Question;
SashulF [63]

*Given

Money of Phoebe            - 3 times as much as Andy

Money of Andy                - 2 times as much as Polly

Total money of Phoebe,  - £270

   Andy and Polly

*Solution

Let

B - Phoebe's money

A - Andy's money

L - Polly's money

1. The money of the Phoebe, Andy, and Polly, when added together would total £270. Thus,

                 B + A + L  = £270                     (EQUATION 1)

2. Phoebe has three times as much money as Andy and this is expressed as

 

                 B = 3A

3. Andy has twice as much money as Polly and this is expressed as

                 A = 2L                           (EQUATION 2)

4. This means that Phoebe has ____ as much money as Polly,

                B = 3A

                B = 3 x (2L)

                B = 6L                            (EQUATION 3)

This step allows us to eliminate the variables B and A in EQUATION 1 by expressing the equation in terms of Polly's money only.

5. Substituting B with 6L, and A with 2L, EQUATION 1 becomes,

                 6L + 2L + L = £270

                               9L = £270

                                 L = £30

So, Polly has £30.

6. Substituting L into EQUATIONS 2 and 3 would give us the values for Andy's money and Phoebe's money, respectively.

                 A = 2L                          

                 A = 2(£30)

                 A = £60

Andy has £60

                 B = 6L                        

                 B = 6(£30)

                 B = £180

Phoebe has £180

Therefore, Polly's money is £30, Andy's is £60, and Phoebe's is £180.

3 0
3 years ago
Which equation has a graph parallel to the graph of 9.x + 3y = -22?
Pani-rosa [81]

Answer:

y = -3x - 8.3

Step-by-step explanation:

You need to rearrange 9x + 3y = -22 in the form y = mx+c.

9x+3y = -22

3y = -9x - 22

y = -3x - 7.3

As long as the gradient is the same, the lines will be parallel. So you can give any number to the intercept (in this case I gave 8.3) and you will have parallel equations.

Final answer : y = -3x - 8.3

7 0
3 years ago
A bag contains blue marbles and red marbles, 75 in total. The number of blue marbles is 5 more than 4 times the number of red ma
horrorfan [7]

There are 61 blue marbles

<em><u>Solution:</u></em>

Let "b" be the number of blue marbles

Let "r" be the number of red marbles

Given that bag contains blue marbles and red marbles, 75 in total

number of blue marbles + number of red marbles = 75

b + r = 75 -------- eqn 1

The number of blue marbles is 5 more than 4 times the number of red marbles

number of blue marbles = 5 + 4(number of red marbles)

b = 5 + 4r ------- eqn 2

Let us solve eqn 1 and eqn 2

Substitute eqn 2 in eqn 1

5 + 4r + r = 75

5 + 5r = 75

5r = 75 - 5

5r = 70

r = 14

From eqn 2,

b = 5 + 4(14) = 5 + 56 = 61

b = 61

Thus there are 61 blue marbles

3 0
3 years ago
What is the image of (1, 8) after a dilation by a scale factor of 5 centered at the origin
adell [148]

Answer:

(5,40)

Step-by-step explanation:

(x,y) scaled by a factor of z is (x*z,y*z)

(1,8) scaled by a factor of 5 is (5,40)

7 0
3 years ago
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