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3 years ago

Use the substitution method to find the solution to the system of linear equations.

Mathematics

1 answer:

nataly862011 [7]3 years ago

3 0

Answer: answer is d

Step-by-step explanation: input in calculator or set both equal to y and then set them equal to each other

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12 of the students in a Geometry class passed a Geometry test. If these students are 80% of all the students in the class, how m

Reika [66]

Answer:

i wanna say 15 maybe, but it might be wrong. I havent done these type of problems in awhile.

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3 years ago

Find the trig ratio. Reduce to<br> lowest terms.<br> 10<br> 24<br> sin A =

Luba_88 [7]

The value of sin A is equal to $\frac{5}{13}.$

<h3>RIGHT TRIANGLE</h3>

A triangle is classified as a right triangle when it presents one of your angles equal to 90º. In this triangle from the trigonometric ratios or the Pythagoras Theorem ( $hypotenuse^2=(side_1)^2+(side_2)^2$ ), it is possible finding angles or sides.

<h3>Trigonometric Ratios</h3>

The main trigonometric ratios for a right triangle are presented below.

$sin\alpha =\frac{opposite \; side}{hypotenuse}$

$cos\alpha =sin\alpha =\frac{adjacent\; side}{hypotenuse}$

$tan\alpha =\frac{opposite \; side}{adjacent\; side}$

The question asks the sin A. First, you should find the hypotenuse from Pythagoras Theorem.

$hypotenuse^2=(10)^2+(24)^2\\ \\ hypotenuse^2=100+576\\\\ hypotenuse^2=676\\ \\ hypotenuse=26$

Now you can find sin A.

$sin\A=\frac{10}{26}=\frac{5}{13}$

Learn more about trigonometric ratios here:

brainly.com/question/11967894

#SPJ1

3 0

2 years ago

PLEASE HELPPPPPPPP!!!!!!!!!

gavmur [86]

To get days from minutes, you should get to hours because the calculations are ten times easier. To find the amount of hours 8640 minutes is, divide 8640 by 60. 8640/60 = 144. 8640 minutes is 144 hours, and 144 divided by 24 is 6 days. There are 6 days in 8640 minutes.

5 0

3 years ago

Read 2 more answers

It says to place points on them but i still don't get it. help please.

xxTIMURxx [149]

Answer: A'=(1, 3); B'=(-3, 4);C'=(3, 0); D'=(-2, 5)

You can check the PNG attached as well.

Step-by-step explanation:

You need to represent the symmetry of every given points respet to the line

$y = 2$

In that case, the line beeing paralell to the x- axis, x- value of the symmetry is the same of the given point and y = 2 is the middle between both points.

Point A(1, 1)

$x_{A} = 1\\ x_{A'} = 1 \\\\\frac{y_{A} +y_{A'} }{2} =2\\y_{A'} = 4 - y_{A} = 4 - 1 = 3$