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3 years ago

I need help with this :/

Mathematics

1 answer:

hoa [83]3 years ago

6 0

Answer:

Plz mark me brainliest!!!!

Step-by-step explanation:

180

270

380

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What is the sum of 1 and opposite of 12

likoan [24]

The opposite of 12 is -12 . To add negative numbers to positive numbers count backwards, as if you were subtracting. We have the problem: 1+ (-12). This can be read as “one plus negative twelve.” This can also be read as 12-1 which is 11 so the answer is 11.

5 0

3 years ago

Find the value of x.

patriot [66]

Answer:

the answer to this question is very simple

its

33.75°

8 0

2 years ago

How to distribute this problem: (x-8)^2 + 16

Usimov [2.4K]

Answer:

We conclude that:

$\left(x-8\right)^2+16=x^2-16x+80$

Step-by-step explanation:

Given the equation

$\left(x-8\right)^2\:+\:16$

First, solve (x - 8)²

Apply Perfect Square formula: (a - b)² = a² - 2ab + b²

$a=x,\:\:b=8$

$\left(x-8\right)^2=x^2-2x\cdot \:\:8+8^2$

$=x^2-16x+64$

so the expression becomes

$\left(x-8\right)^2+16=x^2-16x+64+16$

$=x^2-16x+80$ Add the numbers: 64+16=80

Therefore, we conclude that:

$\left(x-8\right)^2+16=x^2-16x+80$

4 0

2 years ago

A study of the effects of color on easing anxiety compared anxiety test scores of participants who completed the test printed on

NikAS [45]

Answer:

Step-by-step explanation:

To solve this, we would follow these simple steps. We have

unvrs :

The arithmetic mean, x-bar for the yellow paper group (Y) = 20.6

The arithmetic mean, x-bar for the green paper group (G) = 21.75

Recall that, H0: µY = µG

And from the data we have, we can see that

H0: µY< µG

We proceed to say that the

T-Test-statistic = -0.404

Also, the p-value: 0.349

From our calculations, we can see that the p-value > 0.05, and as such, we conclude that we will not reject H0. This is because there is not enough evidence to show that test that is printed on the yellow paper decreases anxiety at a 0.05 significance level.

6 0

3 years ago

Triangle ABC is an equilateral triangle.Find the angle of rotation that maps A to B

svet-max [94.6K]

The sum of the inner angles of any triangle is always 180°, i.e. you have

$\alpha + \beta + \gamma = 180$

In the particular case of an equilater triangle, all three angles are the same, so

$\alpha = \beta = \gamma$

and the expression becomes

$\alpha + \beta + \gamma = \alpha + \alpha + \alpha = 3\alpha = 180$

which implies $\alpha = 60$

So, if you rotate the triangle with respect to its center by 60 degrees, the triangle will map into itself. In particular, if you want point A to be mapped into point B, you have to perform a counter clockwise rotation of 60 degrees with respect to the center of the triangle.

Of course, this is equivalent to a clockwise rotation of 120 degrees.

Finally, both solutions admit periodicity: a rotation of 60+k360 degrees has the same effect of a rotation of 60 degrees, and the same goes for the 120 one (actually, this is obvisly true for any rotation!)

3 0

3 years ago