All categories

3 years ago

Can someone please explain to me step by step how to solve this problem. 4y-(3+y);y=2

Mathematics

2 answers:

k0ka [10]3 years ago

7 0

Answer:

Step-by-step explanation:

Step 1: Since it tells you that y=2, plug it into the equation (meaning replace the y's in the equation with 2)

4y-(3+y)

4(2)-(3+2)

Step 2: Solve.

8 - 5 =

avanturin [10]3 years ago

5 0

Answer:

The answer is 3

Step-by-step explanation:

Plug in 2 for all the y variables and solve:

4(2)-(3+2)=

8-5=3

You might be interested in

The town of Hayward (CA) has about 50,000 registered voters. A political research firm takes a simple random sample of 500 of th

Ilia_Sergeevich [38]

Answer:

(0.0757;0.1403)

Step-by-step explanation:

1) Data given and notation

Republicans =115

Democrats=331

Independents=54

Total= n= 115+331+54=500

$\hat p_{ind}=\frac{54}{500}=0.108$

Confidence=0.98=98%

2) Formula to use

The population proportion have the following distribution

$\hat p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

The confidence interval for the population proportion is given by this formula

$\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}$

We have the proportion of independents calculated

$\hat p_{ind}=\frac{54}{500}=0.108$

We can calculate $\alpha=1-conf=1-0.98=0.02$

And we can find $\alpha/2 =0.02/2=0.01$ , with this value we can find the critical value $z_{\alpha/2}$ using the normal distribution table, excel or a calculator.

On this case $z_{\alpha/2}=2.326$

3) Calculating the interval

And now we can calculate the interval:

$0.108 - 2.326\sqrt{\frac{0.108(1-0.108)}{500}}=0.0757$

$0.108 + 2.326\sqrt{\frac{0.108(1-0.108)}{500}}=0.1403$

So the 98% confidence interval for this case would be:

(0.0757;0.1403)

7 0

3 years ago

Graph the inequality x > 3

torisob [31]

The second equation

8 0

2 years ago

Read 2 more answers

Help please answer 1 an 2

MArishka [77]

1: yes solve the equation 3.14• the diameter
2:yes work backwards dividing pie from the circumference

4 0

3 years ago

Figure ABCD was reflected across the x-axis to create

goldfiish [28.3K]

Answer:

I think the answer is (8,2)

5 0

2 years ago

171 students went on a field trip. four buses were filled and 23 students traveled in cars. How many students were in each car?

ohaa [14]

Answer:

Step-by-step explanation:

4 0

3 years ago