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Ivenika [448]
3 years ago
11

The value of x + x(xx) when x = 2 is: (a) 10, (b) 16, (c) 18, (d) 36, (e) 64

Mathematics
2 answers:
kompoz [17]3 years ago
6 0
X+x(xx) means
x plus x times the quantity x times x
2 plus 2 times the quantity 2 times 2
pemdas
2 plus 2 times 4
2 plus 8
10

A is answer
miskamm [114]3 years ago
3 0
Solution:

x + x(xx)

Put the value of x = 2 in the above expression we get,

2 + 2(22)

= 2 + 2(2 × 2)

= 2 + 2(4)

= 2 + 8

= 10

Answer: (a)
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Researchers interviewed street prostitutes in Canada and the United States. The mean age of the 100 Canadian prostitutes upon en
levacccp [35]

Answer:

Step-by-step explanation:

The null and the alternative hypothesis is:

H_o: \mu_c \ge \mu_{us}

H_a : \mu_c < \mu_{us}

The t- student test statistics can be computed as:

t = \dfrac{x_c- x_{us}}{\sqrt{\dfrac{\sigma_c^2}{n_c} + \dfrac{\sigma_{us}^2}{n_{us}} }}

t = \dfrac{19- 21}{\sqrt{\dfrac{7^2}{100} + \dfrac{8^2}{130} }}

t = -2.017  

degree of freedom = (n₁ - 1) + (n₂ - 1)  

= (100 - 1) + (130 - 1)

= 228

Using the data of t-value and degree of freedom;  

The P-value = -0.224

Decision rule: Do not reject the null hypothesis if the p-value is greater than ∝(0.01)

Conclusion: We reject the null hypothesis since the p-value is less than ∝.

Therefore, there is enough evidence to conclude that the mean age of entering prostitution in Canada is lower than that of the United States.

5 0
3 years ago
When is the sum of two negative mixed numbers an integer?
Alex_Xolod [135]
When the sum equals zero
3 0
3 years ago
I don’t understand this one bit plz answer
kolezko [41]

Step-by-step explanation:

a) C,H,A,N are all its outcomes...

8 0
3 years ago
ANSWER PLEASE PLEASE PLEASE BRAINLY
Nesterboy [21]

Answer:

There are 40 gold books

Step-by-step explanation:

It is counting by 8s

5 0
3 years ago
How to solve as a two step equation.<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B2%7D%20%285%20-%20x%29%20%3D%20%20
-BARSIC- [3]

Answer:

9/2

Step-by-step explanation:

1/2(5 - x) = 1/4   Multiply each term by 4:-

10- 2x = 1

2x = 9

x = 9/2


4 0
3 years ago
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