All categories

3 years ago

What is the solution to the system graphed below?

Mathematics

1 answer:

SIZIF [17.4K]3 years ago

8 0

Answer:

What is that man is that a different language... wait I learned it too!!!

@%DIJ*&#RT)$#@*

yay good job me*

Step-by-step explanation:

^#&II(##^)@W#%^$#

oh and i gave llama 2% of my profit

35434#$##

You might be interested in

13 A traffic roundabout has a circular garden

34kurt

Answer:

Step-by-step explanation:

The area to be resurfaced is the area of the

whole circle including garden and lanes minus

the area of the garden.

Area of a circle is (pi)r2

radius of garden is (1/2)diameter = 8 m

Garden area: (pi)82 = 64(pi) m2

Diameter of garden plus traffic lanes is

16 + 2(6) because we add 6 m to both sides

of the diameter of the garden.

Full diameter = 16+12 = 28 m

Full radius = 28/2 = 14 m

Full area: (pi)142 = 196(pi) m2

Area to be resurfaced:

196(pi) - 64(pi) = 132(pi) m2 ≅ 415 m2

6 0

3 years ago

Can someone help me pleasee !!

hichkok12 [17]

1.20*2 = 2.40 + 0.60 = 3.00

1.20 + 0.60 = 1.80

1.20 per egg and 0.60 for toast

1st answer

3 0

4 years ago

the sum of a whole number A and a whole number B is 16, and the ratio A: B is equivalent to 5: 3. Find A and B.

Cerrena [4.2K]

Answer: A is 10; B is 6

Step-by-step explanation:

Let the sum of a whole number A and a whole number B = 16

A + B = 16

The ratio A: B = 5: 3

Possible whole numbers whose ratio gives 5 : 3 are 10 and 6, 15 and 9, 20 and 12 etc. However, since A + B must equal 16, only 10 and 6 fulfil the condition

So, let A be 10, while B is 6

10 + 6 = 16

The ratio 10 : 6 = 10/6 = 5/3

Thus, the value of A is 10; while B is 6

4 0

4 years ago

A company surveyed 2400 men where 1248 of the men identified themselves as the primary grocery shopper in their household. a) E

polet [3.4K]

Answer:

a) With a confidence level of 98%, the percentage of all males who identify themselves as the primary grocery shopper are between 0.4962 and 0.5438.

b) The lower limit of the confidence interval is higher that 0.43, so if he conduct a hypothesis test, he will find that the data shows evidence to said that the fraction is higher than 43%.

c) $\alpha =1-0.98=0.02$

Step-by-step explanation:

If np' and n(1-p') are higher than 5, a confidence interval for the proportion is calculated as:

$p'-z_{\alpha/2}\sqrt{\frac{p'(1-p')}{n} }\leq p\leq p'+z_{\alpha/2}\sqrt{\frac{p'(1-p')}{n} }$

Where p' is the proportion of the sample, n is the size of the sample, p is the proportion of the population and $z_{\alpha/2}$ is the z-value that let a probability of $\alpha/2$ on the right tail.

Then, a 98% confidence interval for the percentage of all males who identify themselves as the primary grocery shopper can be calculated replacing p' by 0.52, n by 2400, $\alpha$ by 0.02 and $z_{\alpha/2}$ by 2.33

Where p' and $\alpha$ are calculated as:

$p' = \frac{1248}{2400}=0.52\\\alpha =1-0.98=0.02$

So, replacing the values we get:

$0.52-2.33\sqrt{\frac{0.52(1-0.52)}{2400} }\leq p\leq 0.52+2.33\sqrt{\frac{0.52(1-0.52)}{2400} }\\0.52-0.0238\leq p\leq 0.52+0.0238\\0.4962\leq p\leq 0.5438$

With a confidence level of 98%, the percentage of all males who identify themselves as the primary grocery shopper are between 0.4962 and 0.5438.

The lower limit of the confidence interval is higher that 0.43, so if he conduct a hypothesis test, he will find that the data shows evidence to said that the fraction is higher than 43%.

Finally, the level of significance is the probability to reject the null hypothesis given that the null hypothesis is true. It is also the complement of the level of confidence. So, if we create a 98% confidence interval, the level of confidence $1-\alpha$ is equal to 98%

It means the the level of significance $\alpha$ is:

$\alpha =1-0.98=0.02$

4 0

3 years ago

In order to study whether IQ level is related to birth order, data were collected from a sample of 540 students on their birth o

Artist 52 [7]

Answer:

correct answer is e. Side-by-side boxplots

Step-by-step explanation:

given data

IQ test

sample = 540 students

solution

here Side-by-side boxplots that is apply it to the data set with 1 quantitative and 1 categorical variable

Side-by-side boxplots is also very useful in the comparing fundamental information for 2 data set

eg median value and range of value they cover from data

and

Side-by-side boxplots also provide target summary and it analysis the data

so here correct answer is e. Side-by-side boxplots

3 0

3 years ago