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3 years ago

13

Can someone help me complete my mathswatch there is 73 questions and all is about shapes if you are knowledgeable at shapes I ho

pe you can help me

1 answer:

Studentka2010 [4]3 years ago

3 0

Answer:

Make sure you watch all the videos that are related to the topic You are doing.

Step-by-step explanation:

You might be interested in

Solve the compound inequality.

oksano4ka [1.4K]

5x - 11 < -11
5x < 0
x < 0

4x + 2 > 14
4x > 12
x > 3

x<0 or x > 3

7 0

3 years ago

Read 2 more answers

Eric went for a car rental for the weekend. He can choose one of two plants. The first plant has an initial fee of $44 and cost

Maslowich

Answer:

325

Step-by-step explanation:

.12x + 44 = .08x + 57

.04x = 13

x= 325

7 0

3 years ago

what is the fill in for the diagram drop downs drop down 1: is it a reflexive property, equivalent equation or transitive proper

chubhunter [2.5K]

Explanation:

Remember the following properties of real numbers:

Reflexive property:

This property states that a number is always equal to itself.

This property is different from the equivalent equations property. In fact, two equations that have the same solution are called equivalent equations,

Division property of equality:

This property states that when we divide both sides of an equation by the same non-zero number, the two sides remain equal.

Substitution property of equality:

This property states that if x = y, then x can be substituted in for y in any equation.

We can conclude that the correct answer is:

Answer:

Drop Down 1: reflexive property

Drop Down 2: division property of equality.

Drop Down 3: substitution

8 0

1 year ago

Random samples of students were compared to see whether or not there was a difference in the proportion favoring the university'

Nimfa-mama [501]

Answer:

There is enough evidence to support the claim that there is a significant difference in the proportion of residents and commuters who prefer the switch.

Step-by-step explanation:

This is a hypothesis test for the difference between proportions.

The claim is that there is a significant difference in the proportion of residents and commuters who prefer the switch.

Then, the null and alternative hypothesis are:

$H_0: \pi_1-\pi_2=0\\\\H_a:\pi_1-\pi_2\neq 0$

The significance level is 0.05.

The sample 1 (residents), of size n1=200 has a proportion of p1=0.4.

$p_1=X_1/n_1=80/200=0.4$

The sample 2 (conmuters), of size n2=200 has a proportion of p2=0.6.

$p_2=X_2/n_2=120/200=0.6$

The difference between proportions is (p1-p2)=-0.2.

$p_d=p_1-p_2=0.4-0.6=-0.2$

The pooled proportion, needed to calculate the standard error, is:

$p=\dfrac{X_1+X_2}{n_1+n_2}=\dfrac{80+120}{200+200}=\dfrac{200}{400}=0.5$

The estimated standard error of the difference between means is computed using the formula:

$s_{p1-p2}=\sqrt{\dfrac{p(1-p)}{n_1}+\dfrac{p(1-p)}{n_2}}=\sqrt{\dfrac{0.5*0.5}{200}+\dfrac{0.5*0.5}{200}}\\\\\\s_{p1-p2}=\sqrt{0.0013+0.0013}=\sqrt{0.0025}=0.05$

Then, we can calculate the z-statistic as:

$z=\dfrac{p_d-(\pi_1-\pi_2)}{s_{p1-p2}}=\dfrac{-0.2-0}{0.05}=\dfrac{-0.2}{0.05}=-4$

This test is a two-tailed test, so the P-value for this test is calculated as (using a z-table):

$P-value=2\cdot P(z$

As the P-value (0.00008) is smaller than the significance level (0.05), the effect is significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that there is a significant difference in the proportion of residents and commuters who prefer the switch.

5 0

4 years ago

What are the zeros of the quadratic function f(x) = 6x2 – 24x + 1?

seraphim [82]

Answer:

$x=\frac{12+\sqrt{138}}{6}\:\:or\:\:x=\frac{12-\sqrt{138}}{6}$

Step-by-step explanation:

$f(x)=6x^2-24x+1\\\\0=6x^2-24x+1\\\\x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x=\frac{-(-24)\pm\sqrt{(-24)^2-4(6)(1)}}{2(6)}\\ \\x=\frac{24\pm\sqrt{576-24}}{12}\\\\x=\frac{24\pm2\sqrt{138}}{12}\\\\x=\frac{12\pm\sqrt{138}}{6}$

5 0

2 years ago