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3 years ago

I NEED HELPPPP please help me I will give brainiest if correct

Mathematics

2 answers:

liberstina [14]3 years ago

7 0

Answer:

(-4, 10)

Step-by-step explanation:

first with it you follow the rules 2+2=4

(-7)+-(3)=-10

after since it is reflected off of the y axis they opposite each other meaning that negative = positive, positive=negative

4=(-4)

-10= 10

giving you (-4,10)

insens350 [35]3 years ago

5 0

Answer:

4 and -10 i think

Step-by-step explanation:

You might be interested in

In 2008 the Better Business Bureau settled 75% of complaints they received (USA Today, March 2, 2009). Suppose you have been hir

Ede4ka [16]

Answer:

Explained below.

Step-by-step explanation:

According to the Central limit theorem, if from an unknown population large samples of sizes n > 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.

The mean of this sampling distribution of sample proportion is:

$\mu_{\hat p}= p$

The standard deviation of this sampling distribution of sample proportion is:

$\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}$

(a)

The sample selected is of size n = 450 > 30.

Then according to the central limit theorem the sampling distribution of sample proportion is normally distributed.

The mean and standard deviation are:

$\mu_{\hat p}=p=0.75\\\\\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}=\sqrt{\frac{0.75(1-0.75)}{450}}=0.0204$

So, the sampling distribution of sample proportion is $\hat p\sim N(0.75,0.0204^{2})$ .

(b)

Compute the probability that the sample proportion will be within 0.04 of the population proportion as follows:

$P(p-0.04$

$=P(-1.96$

Thus, the probability that the sample proportion will be within 0.04 of the population proportion is 0.95.

(c)

The sample selected is of size n = 200 > 30.

Then according to the central limit theorem the sampling distribution of sample proportion is normally distributed.

The mean and standard deviation are:

$\mu_{\hat p}=p=0.75\\\\\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}=\sqrt{\frac{0.75(1-0.75)}{200}}=0.0306$

So, the sampling distribution of sample proportion is $\hat p\sim N(0.75,0.0306^{2})$ .

(d)

Compute the probability that the sample proportion will be within 0.04 of the population proportion as follows:

$P(p-0.04$

$=P(-1.31$

Thus, the probability that the sample proportion will be within 0.04 of the population proportion is 0.81.

(e)

The probability that the sample proportion will be within 0.04 of the population proportion if the sample size is 450 is 0.95.

And the probability that the sample proportion will be within 0.04 of the population proportion if the sample size is 200 is 0.81.

So, there is a gain in precision on increasing the sample size.

6 0

3 years ago

THIS IS URGENTE I AM BEING TIMED PLZ HELP, if you answer correct i will mark you brainlyist

RoseWind [281]

Answer:

5.85

Step-by-step explanation:

$40.95 / 7 =5.85

5 0

3 years ago

5. There are two kinds of products (called DA and GA) produced in your company every day. Alsothere are two kinds of materials (

chubhunter [2.5K]

Answer:

a) $56000
b) DA = 2, GA = 10

Step-by-step explanation:

Given

DA = A + B ⇒ $3000
GA = A + 2B ⇒ $5000
Number of A = 12
Number of B = 22

We can see from the equations that

GA - DA = B ⇒ $2000 and
A = $1000 and B = $2000 in terms of profit

So greater use of unit B brings greater profit. We don't want any unit is left over, so get this equation.

A + B = 12
A + 2B = 22

Is the equation set to indicate use of the units A and B

Solving we get

A = 2 and
B = 10

It this case all the units are used and profit is maximum

2*$3000 + 10*$5000 = $56000

Number of DA = 2
Number of GA = 10

8 0

4 years ago

It’s number 9 I think it’s 5 or 15 IDK plz tell me the answer to A and B plz

Oduvanchick [21]

Answer:

you have it right its 29 and 5

Step-by-step explanation:

8 0

3 years ago

What expression is equivalent to (4y^2-3) (4y+3)

Naya [18.7K]

Answer:

Step-by-step explanation:

Just use the distributive property.

(4y^2-3)(4y+3)

= 4y^2(4y+3) - 3(4y+3)

= 16y^3 + 12y^2 - 12y - 9

4 0

4 years ago