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4 years ago

10 1/5 + (-8 1/4)= please show all your work

1 answer:

7 0

First find a common denominator

10 1/5 = 51/5 = 204/20

-8 1/4 = -33/4 = -165/20

add the numerators (top number)

-165 + 204 = 39/20

reduce

39/20 = 1 19/20

369/20 = 18 9/20

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IVE BEEN STUCK ON THIS QUESTION CAN I PLEASE GET SOME HELP I WOUDL APPRECIATE IT THANK YOU

Radda [10]

Answer:

B. 3x² -17

Step-by-step explanation:

f(x)= 3x+1

g(x)= x² -6

(f °g)(x) =f(g(x)) so plug in in f for variable x²-6

(f °g)(x) = 3(x² -6) +1 =3x² -18 +1 = 3x² -17

5 0

3 years ago

Suppose 232subjects are treated with a drug that is used to treat pain and 50of them developed nausea. Use a 0.01significance le

Margarita [4]

Answer:

The correct option is B

$t = 0.6093$

$p-value = 0.27116$

The correct option is D

Step-by-step explanation:

From the question we are told that

The sample size is $n = 232$

The number that developed nausea is X = 50

The population proportion is p = 0.20

The null hypothesis is $H_o : p = 0.20$

The alternative hypothesis is $H_a : p > 0.20$

Generally the sample proportion is mathematically represented as

$\r p = \frac{50}{232}$

$\r p = 0.216$

Generally the test statistics is mathematically represented as

=> $t = \frac{\r p - p }{ \sqrt{ \frac{p(1- p )}{n} } }$

=> $t = \frac{ 0.216 - 0.20 }{ \sqrt{ \frac{ 0.20 (1- 0.20 )}{ 232} } }$

=> $t = 0.6093$

The p-value obtained from the z-table is

$p-value = P(Z > 0.6093) = 0.27116$

Given that the $p-value > \alpha$ then we fail to reject the null hypothesis

5 0

3 years ago

Find the volume of these rctangular prisms length=6.4mm width=2.5mm hight=7mm<br> step by step pls

Soloha48 [4]

Answer:

The volume of this rectangular prism is 112mm.

Step-by-step explanation:

$volume \: = \: length \times width \times height \\ v = 6.4mm \times 2.5mm \times 7mm \\ v = 112mm$

4 0

2 years ago

Which equation represents the relationship between the number of buses and the number of people transported by the bus.

bezimeni [28]

Answer: y= 45 x and 1800 people

Step-by-step explanation:

Ur welcome

8 0

3 years ago

Y=-2|x+2|-4 i need to find y intercept and the x intercept

NeTakaya

Answer:

x-int: ∅

y-int: (0,-8)

Step-by-step explanation:

To find the x and y-intercept, simply plug in zero for x and y:

$0=-2|x+2|-4\\4=-2|x+2|\\-2=|x+2|\\$

Because an absolute value cannot be equal to a negative, there is no x-intercept.

$y=-2|0+2|-4\\y=-2|2|-4\\y=-4-4\\y=-8$

Hope it helps :)

3 0

2 years ago