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2 years ago

Please help i’ll give brainliest

Mathematics

2 answers:

Luba_88 [7]2 years ago

7 0

In a 45 - 45 - 90 right triangle, the hypotenuse is √2 · legs = hypotenuse, so legs= $\frac{\sqrt{5}}{\sqrt{2}}$ and to rationalize the denominator all we have to do is multiply the numerator and denominator by √2. $\frac{\sqrt{10}}{2}$ .

pychu [463]2 years ago

3 0

The answer is radical 5/2

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PLEASE HELP ME ASAP!

romanna [79]

Answer:

x =- 3 and y = -7

Step-by-step explanation:

2X-2Y=-8

X=2y + 11

We need to isolate both X and Y in both equations

2x-2y=-8

(add 2y to both sides)

2x=-8+ 2y

(divide both sides by 2)

x=-4+y and x=2y+11

because <u>both of these equations are the same </u>we can put them together

4+y=2y+11

(subtract y)

4=y+11

(subtract 11)

-7=y

so y = -7

then to find x you just need to plug in y to one of the equations

x=2(-7) + 11

x= -14 +11

x = -3

6 0

3 years ago

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I need help now!! pls

Norma-Jean [14]

Answer:

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6 0

2 years ago

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The circumference of a circle is 28π inches. What is the length of the radius of this circle?

devlian [24]

Answer:

The radius of the circle is 14 inches.

Step-by-step explanation:

How is the circumference of a circle related to its radius?

$\displaystyle \text{Circumference} = \pi\times \text{Diameter} = \pi\;(2\times \text{Radius})$ .

In brief,

$\text{Circumference} = 2\pi\times \text{Radius}$ .

For this question,

$\text{Circumference} = 28\pi$ , and
$\text{Radius}$ needs to be found.

Divide both sides of the equation by $2\pi$ :

$\displaystyle \frac{\text{Circumference}}{2\pi} = \text{Radius}$ .

$\displaystyle \text{Radius} = \frac{\text{Circumference}}{2\pi} = \frac{28\pi}{2\pi} = 14$ .

In other words, the radius of this circle is 14 inches.

6 0

3 years ago

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Химический элемент является простым веществом.

amm1812

A chemical a element js a specific kind of atom

8 0

3 years ago

Jane cuts a foam block along the red line. When she looks at the newly

mr_godi [17]

Answer:

B. A rectangle, 4 in by 3 in

Step-by-step explanation:

The foam has the shape of a cuboid with base of 10 in by 4 in and height of 3 in.

The foam has a front elevation of a rectangle with dimension of 4 in by 3 in. It has a left elevation of dimension 10 in by 3 in and a plan of dimension 10 in by 4 in.

If the foam is cut along the red line, the exposed face would be the same as the shape of the front elevation. Hence the shape of the cross section would be a rectangle with dimension of 4 in by 3 in.

8 0

2 years ago