3 years ago

Help I need help I don’t know how to do this

Mathematics

1 answer:

juin [17]3 years ago

3 0

8x²-18xy-5y²

8x²+2xy-20xy-5y²

2x(4x+y) -5y (4x+y)

= (2x-5y) (4x+y)

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What is 25+120-10x=10x-35=

Alexandra [31]

145-10x=10x-35

Add 35 to both sides.

175-10x=10x

Add 10x to both sides.

175=20x

Divide both sides by 20

8.75=x

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3 years ago

Mike just hopped on the edge of a merry-go-round. What are his linear and angular speeds if the diameter of the merry-go-round i

dsp73

Step-by-step explanation:

Given that,

The diameter of the merry-go-round, d = 14 feet

Time taken, t = 6 seconds

Radius, r = 7 feet

The linear speed of the merry-go-round is given by :

$v=\dfrac{2\pi r}{t}\\\\v=\dfrac{2\pi \times 7}{6}\\\\=7.33\ m/s$

Also,

$v=r\omega$

Where

$\omega$ is the angular speed

So,

$\omega=\dfrac{v}{r}\\\\\omega=\dfrac{7.33}{7}\\\\=1.04\ rad/s$

Hence, his linear and angular speeds are 7.33 m/s and 1.04 rad/s.

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3 years ago

Help asapppppp <br> Rewrite the formula

Allushta [10]

Answer:

${ \tt{A = \frac{1}{2} bh}} \\ \\ { \tt{bh = 2A}} \\ \\ { \boxed{ \tt{h = \frac{2A}{b} }}}$

• A is 18 in²

• b is 9 in

${ \tt{h = \frac{2 \times 18}{9} }} \\ \\ { \tt{h = \frac{36}{9} }} \\ \\ { \boxed{ \tt{h = 4 \: \: in}}}$

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3 years ago

Read 2 more answers

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aksik [14]

Answer: X- 0,1,2,3,4 and Y-0,6,12,18,24

Step-by-step explanation: i had to take this test ): luck

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3 years ago

The radioactive substance cesium-137 has a half-life of

statuscvo [17]

A(t)=A0*(1/2)^(t/30)
where t=elapsed years
A0=initial mass at t=0.

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3 years ago