When you found 1 + 8, what was your first step?

Evaluate √36/121 Enter your answer as a fraction in simplest term.

Ad libitum [116K]

Assuming the root sign is over both the numerator and denominator, find the square root of both numbers (6 and 11). The two answers are positive and negative 6/11 because multiplying two negatives makes a positive.

5 0

3 years ago

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Suppose point P (4,−9) is translated according to the rule (x,y) → ( x+3, y−2). What are the coordinates of P′? Explain.

larisa86 [58]

Answer:

P'(7 , -11)

Step-by-step explanation:

what this tells us

(x,y) → ( x+3, y−2)

Is that the value of x of the new point is going to take (x + 3) with respect to the value of x of the other point.

Is that the value of y of the new point is going to take (y - 2) with respect to the value of y of the other point.

P (4,−9)

x = 4

y = -9

P'( x+3, y−2)

x + 3 =

4 + 3 = 7

y - 2 =

-9 - 2 = -11

P'(7 , -11)

5 0

3 years ago

Emergency rooms have reason to suspect that visits increase on the weekends. A recent report indicates that Monday through Thurs

Rasek [7]

Answer:

No the facility dose not have the same pattern as the recent report at the 10% level

Step-by-step explanation:

To determine if the Facility have the same pattern ; Perform Chi squared test for Goodness of fit

state the hypothesis

H0 : μ = same pattern

Ha : μ ≠ same pattern

expected frequency ( E ) = proportion * summation of frequency

summation of frequency = 1000

degree of freedom = 7 - 1 = 6

Next : Calculate the expected frequency (E) , (O-E)²/E. given that the observed frequency and expected proportion is given

For Monday

expected frequency = proportion * frequency = 0.1 * 1000 = 100

(O-E)²/E. = ( 120 - 100 )^2 / 100 = 4.0.

observed frequency ( O ) , expected frequency ( E )

For Tuesday

E = 0.1 * 1000 = 100

(O-E)²/E = ( 130 - 100 )^2 / 100 = 9.0

Repeat same calculations for Wednesday through Sunday

Then perform Chi-squared test

X² = Σ(O-E)²/E = 63.642

∝ = 0.1

df = 6

hence P-value = 0.000 ( =chisq.dist.rt(test-stat,df)

since P-value < ∝ ; we will fail to reject Ha hence we reject H0

7 0

3 years ago

Which of the quadratics has a graph with only one x-intercept? A) y = 2x2 + 4 B) y = x2 - 8x + 16 C) y = 2x2 - 8x + 20 D) y = -2

xeze [42]

There is a math app called desmos past the graph equations and it will show you the answer. But i will comment below and tell you the answer if you don't want to

5 0

4 years ago

Read 2 more answers

Solve algebraically the simulaneous equations y=2x^2-3x-10 2x-y=-2

enot [183]

Answer:

X=-3/2, X=4

Step-by-step explanation:

Really easy

Image attached