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2 years ago

Please click on file and help, thanks!

Mathematics

2 answers:

zavuch27 [327]2 years ago

7 0

Answer:

8x+4x+9x

Step-by-step explanation:

Finding the perimeter is just adding the sides

to find the area you multiply instead

Maurinko [17]2 years ago

4 0

Answer:

the perimeter of the triangle is 21

Step-by-step explanation:

P=a+b+c=4+8+9=21

BRAINLIEST

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1 . The lengths of the legs of a right triangle are 25 cm and 60 cm. What is the length of the hypotenuse?

Svetlanka [38]

$a^{2}+ b^{2} = c^{2}$ that is, hypotenuse.
Therefore, let the length of the hypotenuse be 'x.'
$25^{2}+ 60^{2}= x^{2}$
625+3600= $x^{2}$
4225= $x^{2}$
Therefore,
$\sqrt{4225}$ =x
65=x
The length of the hypotenuse is B.65 centimetres.

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3 years ago

What is the slope of the line??? Someone please help.

hammer [34]

-1/1 is your answer :)

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3 years ago

Which angles intercept a 20 degree arc in a circle? Select all that apply.

kobusy [5.1K]

Answer:

B and D

Step-by-step explanation:

A 20 degree intercepted arc will correspond with two angles: the inscribed angle and the central angle.

The central angle always has the same degree measure as the intercepted arc, so we want a central angle with degree 20. So, that's B.

The inscribed angle is the angle whose vertex is on the circle, not the center. This angle always has half the measure of the intercepted arc, so we want an angle with degree 20/2 = 10. So, that's D.

Thus, the answers are B and D.

Hope this helps!

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3 years ago

What whole number comes right before 110.

Viefleur [7K]

The whole number that comes right before 110 is 109

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3 years ago

Sandy cut a 151-centimeter board into five pieces. The three shortest pieces are the same length and the two longer pieces are e

Serga [27]

Answer: The short piece is 29.6 cm long and 32.6 cm long.

Step-by-step explanation:

Let x = length of short pieces , y = lengthof longer pieces.

y=x+3 (i)

As per given,

3x+2y=151 (ii)

Substitute value of y from (i) in (ii), we get

$3x+2(x+3)=151\\\\\Rightarrow\ 3x+2x+3=151\\\\\Rightarrow\ 5x=148\\\\\Rightarrow\ x=\dfrac{148}{5}=29.6$

Put value of in (i), we get

y=29.6+3= 32.6

Hence, the short piece is 29.6 cm long and 32.6 cm long.

8 0

3 years ago

Please click on file and help, thanks! ​

Please click on file and help, thanks!