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3 years ago

11

Will mark BRAINLIEST!!!

2 answers:

sergiy2304 [10]3 years ago

8 0

Your answer should be c ....................

guapka [62]3 years ago

8 0

Answer:

$\frac{\sqrt[4]{3} }{4xy^{2} }$ Your answer should be C.

Step-by-step explanation:

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Help??? It’s pretty complicated, well for me.

masha68 [24]

Answer:

The first box is 10.2

The second box is 15.

The last box is 76.

8 0

3 years ago

Graph the function. y = 1/5 (3)^x

Thepotemich [5.8K]

PLOT:
-2, 0.022
-1, 0.067
0, 0.2
1, 0.6
2, 1.8

6 0

3 years ago

Refer to the accompanying TI-83/84 Plus calculator display of a 95% confidence interval. The sample display results from using

Darina [25.2K]

Answer:

[22.57 ± 2.776]

Step-by-step explanation:

Hello!

You have the 95% Confidence Z-interval (21.182;23.958), the mean X[bar]= 22.57 and the sample size n=25.

The formula for the Z interval is

[X[bar] ± $Z_{1-\alpha /2} *( \frac{Sigma}{\sqrt{n} } )$ ]

The value of Z comes from tha standard normal table:

$Z_{1-\alpha /2} = Z_{0.975}= 1.96$

The semiamplitude (d) or margin of error (E) of the interval is:

E or d= (Upperbond- Lowerbond)/2 = (23.958-21.182)/2 = 2.776

[X[bar] ± E]

[22.57 ± 2.776]

I hope it helps!

8 0

3 years ago

A little shop sells Christmas toys. The wholesale price for each toy in a consignment of 50 toys was $5.5. Half of this quantity

laila [671]

Answer:

$Profit = \$250$

Step-by-step explanation:

Given

Number of Toys = 50

Unit Cost Price = $5.5

Unit Selling price = $15

Required

Determine the profit after sales

First, we need to determine the total cost price;

$Cost\ Price = Number\ of\ toy *\ Unit\ cost\ price$

$Cost\ Price = 50 * \$5.5$

$Cost\ Price = \$275$

First, we need to determine the total sales;

____________________________________________________

Half of the toy was sold at $15;

$Half\ of\ the\ toy = \frac{1}{2} * 50$

$Half\ of\ the\ toy = 25$

$Sales = \$15 * 25$

$Sales = \$375$

____________________________________________________

Two-fifth of the remaining was sold at half of the sales price

From the above calculation;

$Remaining\ Toy = 50 - 25$

$Remaining\ Toy = 25$

<em></em>

<em>Calculating Two-fifth of the remaining:</em>

$\frac{2}{5} * 25$

$= \frac{50}{5}$

$= 10$

<em>Calculating half of the sales price:</em>

$\frac{1}{2} * \$15$

$\$7.5$

This means that 10 toys were sold for $7.5

$Sales = 10 * \$7.5$

$Sales = \$75$

____________________________________________________

The remaining was sold at one-third of the sales price

From the above calculations (1 & 2);

$Remaining\ Toy = 50 - 25 - 10$

$Remaining\ Toy = 15$

<em>Calculating </em>one-third <em>of the sales price:</em>

$\frac{1}{3} * \$15$

$\$5$

This means that 15 toys were sold for $5

$Sales = 15 * \$5$

$Sales = \$75$

____________________________________________________

Now the total sales can be calculated;

$Total\ Sales = \$375 + \$75 + \$75$

$Total\ Sales = \$525$

$Profit = Total\ Sales -\ Cost\ Price$

$Profit = \$525 -\$275$

$Profit = \$250$

3 0

3 years ago

Need urgent help in mathematics!! Will mark brainliest!!!!

Marina86 [1]

₆C₃ is a combination. you can find this setting in the statistics menu of your scientific calculator (i think).

If you don't have a scientific calculator, you can use the following formula:

nCr = $\frac{n!}{r!(n - r)!}$

₆C₃ = $\frac{6!}{3!(6 - 3)!}$

= $\frac{6!}{3!(3)!}$

= $\frac{6 * 5 * 4 * 3!}{3!(3)!}$

= $\frac{6 * 5 * 4 }{3 * 2}$

= 5 * 4

= 20

Answer: B

7 0

3 years ago