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Harman [31]
3 years ago
15

10 is 40% of what number?

Mathematics
1 answer:
JulijaS [17]3 years ago
5 0
Hello, 

x* \frac{40\%}{100\%}=10\\\\ x= \frac{10*100}{40}  \\  \\ \boxed{x=25}
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A 25 gram sample of a sample that's used for drug research has a k value of 0.1205
ra1l [238]
N=12.5(at time t=t) Here half life
No=25
K=12.05
Simple exponential equation where you need to calculate
Your answer should be 5.75225876
4 0
3 years ago
Louise bought 1 1/4 pounds of roast beef at $2.00 per pound and ​ 2 1/2 ​pounds of turkey at $1.50 per pound. What was her total
Travka [436]
To do this you would have to do $2.00 times 1 1/4 to get the price of roast beef and $1.50 times 2 1/2.
1)To make it easier change the fractions to decimals.
(1.25)&(2.5)
2) Then do $2.00(1.25) to get
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6 0
3 years ago
In a random sample of n1 = 162 males, there are x1 = 63 people that have blue eyes. In a random sample of n2 = 333 females, ther
sesenic [268]

Answer:

z = 2.1784 > 1.96,

Reject the null hypothesis

Step-by-step explanation:

For the males:

n1  = 162, x1 = 63

P1 = x 1/ n1 = 0.3889

For the Females:

n2 = 333,

x2 = 97

P 2 = x2/n2

= 0.2913

P 1= P2 Null hypothesis

P 1 is not equal to P 2 alternative hypothesis

Pooled proportion:

P= (x1 + x2) /( n1+ n2)

= (63 + 97) / (162 + 333)= 0.3232

Test statistics :

Z= (p1 - p2) /√p(1-p)× (1/n1 + 1/n2)

0.3889- 0.2913 / √0.3232 × 0.6768 × (1/162 +1/333)

=2.1784

c) Critical value :

Two tailed critical value, z critical = Norm.S .INV (0.05/2) = 1.960

Reject H o if z < -1.96 or if z > 1.96

d) Decision:

z = 2.1784 > 1.96,

Reject the null hypothesis

7 0
3 years ago
Can you help me!!!!!!!!!!!!!!!!!!!!!!!!!
Elan Coil [88]

Answer:

yes

Step-by-step explanation:

by giving us a question and letting us answer it

3 0
3 years ago
Read 2 more answers
NEED ANSWER ASAP PLEASE HELP
Artyom0805 [142]

Step-by-step explanation:

the answer is C I'm 100% sure of it

3 0
3 years ago
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