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3 years ago

Help me please teachers trying to give me 8th grade problems

Mathematics

2 answers:

Bezzdna [24]3 years ago

5 0

Answer:

x = 2

Step-by-step explanation:

Used a scientific calculator.

murzikaleks [220]3 years ago

3 0

Answer:

x = 2

Step-by-step explanation:

5x - 7 = 3

Add seven to the minus 7 and 3

Which gives you:

5x = 10

Divide both sides by 5

Which gives you:

X = 2

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Anni [7]

I don’t know i never seen this math problem before

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3 years ago

Right triangle ABC and its image, triangle A'B'C' are shown in the image attached.

AlladinOne [14]

Answer:

See explanation

Step-by-step explanation:

Triangle ABC ha vertices at: A(-3,6), B(0,-4) and (2,6).

Let us apply 90 degrees clockwise about the origin twice to obtain 180 degrees clockwise rotation.

We apply the 90 degrees clockwise rotation rule.

$(x,y)\to (y,-x)$

$\implies A(-3,6)\to (6,3)$

$\implies B(0,4)\to (4,0)$

$\implies C(2,6)\to (6,-2)$

We apply the 90 degrees clockwise rotation rule again on the resulting points:

$\implies (6,3)\to A''(3,-6)$

$\implies (4,0)\to B''(0,-4)$

$\implies (6,-2)\to C''(-2,-6)$

Let us now apply 90 degrees counterclockwise rotation about the origin twice to obtain 180 degrees counterclockwise rotation.

We apply the 90 degrees counterclockwise rotation rule.

$(x,y)\to (-y,x)$

$\implies A(-3,6)\to (-6,-3)$

$\implies B(0,4)\to (-4,0)$

$\implies C(2,6)\to (-6,2)$

We apply the 90 degrees counterclockwise rotation rule again on the resulting points:

$\implies (-6,-3)\to A''(3,-6)$

$\implies (-4,0)\to B''(0,-4)$

$\implies (-6,2)\to C''(-2,-6)$

We can see that A''(3,-6), B''(0,-4) and C''(-2,-6) is the same for both the 180 degrees clockwise and counterclockwise rotations.

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3 years ago

Which is closest to the measure of the marked angle in the shape?

GaryK [48]

Out of the 3 choices, I’d say it’s C.

180 degrees because 180 degrees means a straight line and it’s not close to 90, a right angle. It seems like a closer angle to a straight line.

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3 years ago

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Sedaia [141]

The height of the barrel is 6 feet.

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.. / .... .- - . / -.-- --- ..- / -.- -.-- ...<br> :)))<3<br><br> discord is kayleelol#6666

Mademuasel [1]

Answer:

cool thx for the points

Step-by-step explanation:

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3 years ago

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