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3 years ago

PLZ HURRY GOT 10 MINS LEFT

Mathematics

1 answer:

tatyana61 [14]3 years ago

3 0

Answer:

6 units

Step-by-step explanation:

Both units lie on the -5 x-axis, so you only have to look at the difference in the y-axis. Going from -2 to -8 is a 6 unit difference.

Hope this helps :)

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Jake is solving x^2-6x+5=0 by completing the square his steps are shown below step 1. x^2-6x=-5 step 2. x^-6x+9=-5+9 step 3. (x-

damaskus [11]

Answer:

Jake's error in step 3

Step-by-step explanation:

we have

$x^{2} -6x+5=0$

Complete the square

step 1

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$x^{2} -6x=-5$

step 2

Complete the square. Remember to balance the equation by adding the same constants to each side

$x^{2} -6x+9=-5+9$

$x^{2} -6x+9=4$

step 3

Rewrite as perfect squares

$(x-3)^{2}=4$

Jake's error in step 3

He placed 6 instead of 3 in the left side

step 4

take square root both sides

$\sqrt{(x-3)^2} =\sqrt{4}$

step 5

$(x-3)=\pm2$

step 6

$x=3\pm2$

step 7

x=5 and x=1

7 0

3 years ago

Cameron's uncle is 3 times old as he is. 4 years ago, he was 4 times older. How old is Cameron?

erma4kov [3.2K]

Let Cameron be x years old now.

Now:

Cameron = x

Uncle =3x

4 years ago:

Cameron = x - 4

Uncle = 3x - 4

4 years ago, Uncle is 4 times older:

3x - 4 = 4(x - 4)

Find x:

3x - 4 = 4(x - 4)

3x - 4 = 4x - 16

4x - 3x = 16 - 4

x = 12

Find the age:

Cameron = x = 12

Answer: Cameron is 12 years old now.

3 0

3 years ago

Read 2 more answers

The coefficients in the expression of (x+y)^4 are

DENIUS [597]

Answer:

the coefficients are 1,4,6,4,1.

Step-by-step explanation:

I hope this helps

4 0

3 years ago

What is 106 divided by 5

Bas_tet [7]

Answer:

21.2

Step-by-step explanation:

5 0

2 years ago

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A study claims that the combination of vitamin C with vitamin E is more effective for preventing the flu than vitamin C alone. I

victus00 [196]

1) In this study, the control group is the first group of 310 subjects that were instructed to take only 600 mg daily of vitamin C. (Option C; that is, group 1).

2) The study is not Blind (Option C).

In an experimental setup to test a theory, A control group is the set of experimental participants that the theory to be tested isn't applied upon.

In the case of testing a new treatment, the control group is the group that the new treatment isn't administered.

For this question, the experiment was set up to test the effectiveness of a combination of vitamin A and vitamin E in treating flu cases rather than using vitamin C alone. Group A is the only group that only the old treatment alone is applied to; group 1 participants received no dosage of the new combination of treatments to be tested involving vitamins A and E, unlike the two other groups.

It is obvious now why the experimental participants of group 1 are the control group.

2) A blind experiment/study is one in which the participants don't know which group they belong to, whether they are in the control group or the other experimental group. Like in this case, if this was a blind study, the participants wouldn't know which group they belonged to or which treatment is administered to them.

A double-blind experiment/study is one in which both the conductors of the experiment and the participants in the experiment wouldn't know which group any participant is in. The conductors wouldn't know which participants were in the control or treatment group and the participants too wouldn't have an idea whether they are in the control or treatment group.

To learn more about the vitamin visit: brainly.com/question/24324739

#SPJ4

3 0

1 year ago