All categories

3 years ago

Why is math hard????

Mathematics

2 answers:

TiliK225 [7]3 years ago

6 0

Answer:

BECAUES IT IS

Step-by-step explanation:

I don´t know

sammy [17]3 years ago

4 0

Answer:

It doesnt have to be, you are making it. It's really just addition multiplication divison and subtraction in different ways

Step-by-step explanation:

You might be interested in

HELLPPPPPPPPPPPPPPppppppppppp

laiz [17]

Answer:

find the percentage equal to 70/80

4 0

3 years ago

Nathan is going to invest in an account paying an interest rate of 4.9% compounded continuously. How much would Nathan need to i

Naily [24]

Answer:

731.48

Step-by-step explanation:

you take 6 percent form 100 percent with give 94 percent

then you times 1200 by 94 percent 8 times to get answer

6 1

3 years ago

Read 2 more answers

In a sample of 388 people in a certain, 22% had red hair. Find a 99% confidence interval for the proportion of people in the cou

Anit [1.1K]

Answer: (0.1658, 0.2742)

Step-by-step explanation:

Formula to find the confidence interval for population proportion is given by :-

$\hat{p}\pm z^*\sqrrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

, where n= sample size

z*= Critical value

$\hat{p}$ = sample proportion.

As per given , we have

Significance level : $\alpha=1-0.99=0.01$

According to z-table, Critical value for 99% confidence interval : z*=2.576

Let p be the proportion of people in the country that have red hair.

n= 388

$\hat{p}=0.22$

Now, required confidence interval for proportion of people in the country that have red hair will be :-

$0.22\pm (2.576)\sqrt{\dfrac{0.22(1-0.22)}{388}}$

$0.22\pm (2.576)\sqrt{0.000442268}$

$0.22\pm (2.576)(0.02103)$

$(0.22-0.05417328,\ 0.22+0.05417328 )=(0.16582672,\ 0.27417328)\\\\\approx(0.1658,\ 0.2742)$

The 99% confidence interval for the proportion of people in the country that have red hair= (0.1658, 0.2742)

8 0

3 years ago

the ratio of dogs to cats is 5:3 ,the ratio of fish to dogs is 6:1 .what is the ratio of cats to fish

e-lub [12.9K]

Answer:

10: 1

Step-by-step explanation:

We have to make the dogs art of the ratio equal first.

5:3>30:18

6:1> 180: 30

After this we have to simplify the ratio.

Cats to fish is 180:18 (divide by 2) 90:9 (then by 3) 30 : 3 (and finally by 3 again) 10 : 1

4 0

3 years ago

Hello! i need help,, again,, :sob:

max2010maxim [7]

Answer:

i need more information

assuming this is a facotr tree, what is the number stemming from the TOP? i cant solve it without any numbers

Step-by-step explanation:

god please learn from these answers so you don't have to wait for ppl to notice your questions

3 0

3 years ago