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3 years ago

Please help, due in 1 day; which is tomorrow

Mathematics

2 answers:

MrRa [10]3 years ago

6 0

Already answered in the other one.

GrogVix [38]3 years ago

5 0

1) 360°-18°-18°-3x°-3x°=0
6x=324°
x=54°
2) 180°-49°-(x+3)°=0
(x+3)°=131°
x=128°
3) 90°-42°-4x°=0
4x°=48°
x=12°
4) 180°-86°-2x°=0
2x°=94°
x=47°
5) 360°-117°-117°-3x°-3x°=0
6x=126°
x=21°
6) 90°-66°-8x°=0
8x=24°
x=3°
7) 180°-22°-(x-5)°=0
(x-5)°=158°
x=163°
8) 90°-2x°-2x°=0
4x°=90°
x=22.5° (i don't know if you can leave it like this or you have to write it in another way)
9) 90°-57°-3x°=0
3x°=33°
x=11°

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Find the measure of the arc or angle indicated.

xenn [34]

For each problem, use the inscribed angle theorem.

19.

$45^\circ=\dfrac12m\widehat{QR}\implies m\widehat{QR}=90^\circ$

20.

$95^\circ=\dfrac12m\widehat{ABC}\implies m\widehat{ABC}=190^\circ$

21.

$49^\circ=\dfrac12m\widehat{LR}\implies m\widehat{LR}=98^\circ$

LN is a diameter, so arc LN has measure 180º, and so

$m\widehat{LR}+m\widehat{RN}=m\widehat{LN}=180^\circ\implies m\widehat{RN}=82^\circ$

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3 years ago

A train decreased its speed by 72 miles hour in 12 minutes. Find the average change in speed per minute.

melisa1 [442]

Answer:

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Step-by-step explanation:

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2 years ago

Roger is building a storage shed with wood blocks that are in the shape of cubic prisms. Can he build a shed that is twice as hi

azamat

Complete question is;

Roger is building a storage shed with wood blocks that are in the shape of cubic prisms. Can he build a shed that is twice as high as it is wide?

A. Yes. For every block of width, he could build two blocks high.

B. Yes. He could use half as many blocks for the height as the width.

C. There is no way to determine if he can do this.

D. No, it is not possible to do this

Answer:

A. Yes. For every block of width, he could build two blocks high.

Step-by-step explanation:

We are told that the wood blocks are in the shape of cubic prisms.

Now, cube shapes means that all sides are equal.

Now, if he divides the cube into 2, he can use one have to add to the top to make the height double since the sides are equal.

Thus, the height will now be twice a side of the cubic prism.

Thus, he can build a shed twice as high as its width.

6 0

3 years ago

Read 2 more answers

What is (x - 4y) (-3x - 2y) = ?

Artemon [7]

The answer is -3x^2+10xy+8y^2

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3 years ago

A truck weighing 150kN and travelling at 2m/sec impacts with a buffer

FrozenT [24]

The maximum compression of the spring is 0.276 m

Step-by-step explanation:

First of all, we calculate the spring constant of the spring, by using Hooke's law:

$F=kx$

where

F = 10 kN = 10,000 N is the force applied

x = 1.25 cm = 0.0125 m is the corresponding compression of the spring

k is the spring constant

Solving for k,

$k=\frac{F}{x}=\frac{10,000}{0.0125}=8\cdot 10^5 N/m$

When the truck impacts with the spring, all the kinetic energy of the truck is converted into elastic potential energy of the spring, so we can write

$\frac{1}{2}mv^2=\frac{1}{2}kx^2$ (1)

where

m is the mass of the truck

v = 2 m/s is the initial speed of the truck

$k=8\cdot 10^5 N/m$ is the spring constant

x is the compression of the spring

The mass of the truck can be found from its weight:

$m=\frac{W}{g}=\frac{150,000 N}{9.81 N/kg}=15,290 kg$

So now we can re-arrange eq.(1) to find the compression, x:

$x=\sqrt{\frac{mv^2}{k}}=\sqrt{\frac{(15,290)(2)^2}{8\cdot 10^5}}=0.276 m$

Learn more about kinetic energy:

brainly.com/question/6536722

#LearnwithBrainly

6 0

3 years ago