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3 years ago

Please help! Super easy just want to double check my answers! Thank you so much!

Mathematics

2 answers:

Alex777 [14]3 years ago

5 0

Answer:

Step-by-step explanation:

i think, dont trust me tho

Anna11 [10]3 years ago

3 0

The domain would be {8,12,16,20}

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What is the value of x in this equation -6x =72

Svetradugi [14.3K]

The value of x in that equation is -12

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3 years ago

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Find the value of'y'from the given figure<br><img src="https://tex.z-dn.net/?f=class8" id="TexFormula1" title="class8" alt="clas

telo118 [61]

Answer:

$y = 30$

<u>Skills needed: Angle Geometry</u>

Step-by-step explanation:

1) First, let's see what we should know prior to solving.

---> We have to find the value of $y$ , and looking at that diagram, we have to create an equation.

---> The angle measure of a straight line is 180 degrees, otherwise known as a straight angle (a straight angle is 180 degrees).

---> When you add $3y+3y$ , you can set that sum equal to 180. This is because the two angles marked $3y$ added together make a straight line, which is a straight angle.

(Note: In geometry, ONE OF THE THINGS WE CAN ASSUME is that there is a straight line there.)

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2) Now, the equation would be:

$3y+3y=180$

$6y=180$ --> Combining $3y$ and $3y$ (3+3 = 6)

$y = 180\div6$ --> Dividing by 6 on both sides, to get $y$ by itself.

$y=30$ ---> $180 \div 6$ is 30, so $y$ is equal to 30.

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$y=30$

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2 years ago

Find the area of the triangle 14 Ft 17 ft

Nuetrik [128]

Answer:

119

Step-by-step explanation:

14x17 = 238)/2

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3 years ago

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F two triangles satisfy the SAS criteria, describe the rigid motion(s) that would map one onto the other in the following cases.

Mama L [17]

Answer:

Reflection

Step-by-step explanation:

SAS congruency criteria:

2 sides of both triangles are equal

the angle between these two sides of both triangles are equal

Then, if the two triangles share a common side and satisfy the SAS criteria, reflection would map one onto the other.

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3 years ago

Micah is writing a function that models the height a dolphin reaches when it propels itself from underwater to the surface, leap

stepladder [879]

Answer:

The dolphin will be above the surface of the water for 2 seconds.

Step-by-step explanation:

Solving a quadratic equation:

Given a second order polynomial expressed by the following equation:

$ax^{2} + bx + c, a\neq0$ .

This polynomial has roots $x_{1}, x_{2}$ such that $ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})$ , given by the following formulas:

$x_{1} = \frac{-b + \sqrt{\Delta}}{2*a}$

$x_{2} = \frac{-b - \sqrt{\Delta}}{2*a}$

$\Delta = b^{2} - 4ac$

The height of the dolphin after t seconds is given by:

$h(t) = -16t^2 + 96t - 128$

According to Micha's model, how long will the dolphin be above the surface of the water?

It stays above the surface of the water between the first and the second root. Initially, it is below water, when the first time for which $h(t) = 0$ it crosses the surface upwards, and then the second time for which $h(t) = 0$ it crosses the surface downwards.