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3 years ago

5

What is the sample space for spinning a square spinner labeled A, B, C, D?

1 answer:

Liula [17]3 years ago

3 0

D Would Be My Guess >.>

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Quadriatic formula 2w^2-28w=-98

alina1380 [7]

To apply the quadratic formula, the right side must be equal to 0.

$2w^2-28w=-98 \\ 2w^2-28w+98=0$

Now you can apply the quadratic formula $\frac{-b\±\sqrt{b^2-4ac}}{2a}$ to find the solution for w.

$\frac{-(-28)\±\sqrt{(-28)^2-4(2)(98)}}{2(2)} = \frac{28\±\sqrt{784-784}}{4} = \frac{28}4 = \boxed{7}$

(The quadratic formula is highly unnecessary in this problem, however. You could easily divide all values by 2 to get w²-14w+49=0, which factors into (w-7)²=0, for which 7 is the only solution which puts a factor of the quadratic equal to 0.)

4 0

3 years ago

Read 2 more answers

Please answer correctly !!!! Will mark Brianliest !!!!!!!!!!!!!

NARA [144]

Answer:

2261,9 cm³

Step-by-step explanation:

First, you need to find the area of the base:

$A=\pi r^2$

A=36 $\pi$ cm²

Now let's multiply it for the height:

36π cm² × 20 cm = 720π cm³

= 2261,9 cm³

5 0

3 years ago

A sociologist recently conducted a survey of senior citizens who have net worths too high to qualify for Medicaid but have no pr

hjlf

Answer:

a) $s= 9.74$

D. 9.74

b) $Median= 74$

B. 74

Step-by-step explanation:

Part a

We have the following dataset given:

69 74 75 62 70 93 64 69 61 88 67 77 87 90 66 91 77 63 82 82 71 74 76 65 83

We can begin calculating the sample mean with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

And replacing we got:

$\bar X = 75.04$

Now we can calculate the sample deviation with the following formula:

$s =\sqrt{\frac{\sum_{i=1}^n (X_i-\bar X)^2}{n-1}}$

And after replace we got:

$s= 9.74$

Part b

For this case we need to sort the value on increasing way:

[1] 61 62 63 64 65 66 67 69 69 70 71 74 74 75 76 77 77 82 82 83 87 88 90 91 93

And the median would be the value in the position 13 and we got:

$Median= 74$

6 0

3 years ago

Find the area of the trapezoid.<br> 40 mm<br> 24 mm<br> 19 mm<br> A=<br> mm2

UNO [17]

Answer:

A = 708 mm^2

Step-by-step explanation:

$A=\frac{a+b}{2} h\\\\A=\frac{19+40}{2} *24\\\\A=\frac{59}{2} *24\\\\A= 708$

5 0

3 years ago

ssri has a bag containing 6 half dollars and 5 dollar coins. What is the total mass of coins in saris bag ,half dollar 11.34 and

Lelu [443]

Answer:

19.44??

Step-by-step explanation:

8 0

3 years ago