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nataly862011 [7]
3 years ago
8

Answer the question below pls

Mathematics
2 answers:
marin [14]3 years ago
6 0

Answer:

Step-by-step explanation:

I think C

Ber [7]3 years ago
4 0
C. is the correct choice
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Can someone please help me with math.
worty [1.4K]

Answer:

B

Step-by-step explanation:

Reflection in Y axis

P(X,Y)----------------------P`(-X,Y)

3 0
3 years ago
Neveah has created the function of f(x) = 2x+4/3 to represent the growth of her hair, where x represents the number of months si
Andre45 [30]
F(x)=2x+4/3

Replace f(x) by y:
y=2x+4/3

Solving for x:
y-4/3=2x+4/3-4/3

Subtracting the two terms on the left side of the equation:
(3y-4)/3=2x

Dividing both sides of the equation by 2:
[(3y-4)/3]/2=2x/2
[(3y-4)/3]*(1/2)=x
[(3y-4)*1]/[(3)*(2)]=x
(3y-4)/6=x
x=(3y-4)/6

Replace "x" by "f^(-1) (x)" (inverse function) and "y" by "x":
f^(-1) (x) = (3x-4)/6   Inverse function

Then, for x=6 
f^(-1) (6) = [ 3(6)-4]/6
f^(-1) (6) = (18-4)/6
f^(-1) (6)= 14/6
f^(-1) (6) = 7/3

Her hair will have grown 6 after 7/3 = 2.33 months


3 0
3 years ago
Mike and Danielle each improve their yards by planting hospice and shrubs. They bought their supplies from the same store. Mike
gizmo_the_mogwai [7]

Answer: each hospice costs $4 and each shrub costs $9

Step-by-step explanation:

Let x represent the cost of one hospice.

Let y represent the cost of one shrub.

Mike spent $71 on four hospice and seven Travis. This means that

4x + 7y = 71- - - - - - - - - - - - -1

Danielle spent $53 on 13 hospice and three shrubs. This means that

13x + 3y = 53- - - - - - - - - - - 2

Multiplying equation 1 by 13 and equation 2 by 4, it becomes

52x + 91y = 923

52x + 12y = 212

Subtracting, it becomes

79y = 711

y = 711/79

y = 9

Substituting y = 9 into equation 1, it becomes

4x + 7 × 9 = 71

4x + 63 = 71

4x = 71 - 63

4x = 8

x = 8/4 = 2

6 0
4 years ago
Read 2 more answers
You are hiking along the California coast and wonder about the height of a particular Giant Redwood tree.
Dvinal [7]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
<span>Change 5'9" to 5.75 ft; let t = height of the tree
</span><span>You can use ratio here (corresponding sides of similar triangles):
5 x 75/ 5 = t/165
</span><span>cross multiply
5t = 5.75*165
5t = 948.75
t = 948.75/ 5
</span><span>t = 189.75 ft or 189 ft 9 inches</span>
7 0
4 years ago
Help me find Sample variance and standard deviation
AnnZ [28]
First, find the mean. You'll need it to compute the variance.

\bar x=\displaystyle\frac15\sum_{i=1}^5x_i=\dfrac{21+10+6+7+11}5=11

The variance of the sample is then computed with the formula

s^2=\displaystyle\dfrac1{5-1}\sum_{i=1}^5(\bar x-x_i)^2=\dfrac{(21-11)^2+\cdots+(11-11)^2}4=\dfrac{71}2=35.5

The standard deviation is the square root of the variance, so

s=\sqrt{35.5}\approx5.958
5 0
3 years ago
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