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3 years ago

Math work pls help :)

Mathematics

1 answer:

AveGali [126]3 years ago

7 0

Answer:

History of mathematics

Several civilizations — in China, India, Egypt, Central America and Mesopotamia — contributed to mathematics as we know it today. The Sumerians were the first people to develop a counting system. Mathematicians developed arithmetic, which includes basic operations, multiplication, fractions and square roots. The Sumerians’ system passed through the Akkadian Empire to the Babylonians around 300 B.C. Six hundred years later, in America, the Mayans developed elaborate calendar systems and were skilled astronomers. About this time, the concept of zero was developed.

Step-by-step explanation:which includes basic operations, multiplication, fractions and square roots. The Sumerians’ system passed through the Akkadian Empire to the Babylonians around 300 B.C. Six hundred years later, in America, the Mayans developed elaborate calendar systems and were skilled astronomers. About this time, the concept of zero was developed.

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Find the equation of the line shown

solniwko [45]

Answer:

$y=-\frac{1}{4}x+2$

Step-by-step explanation:

We will use the point slope formula: $y=mx+b$

We will start by finding the slope( $m$ ).
The formula for slope is

$\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

So if we just choose 2 random points on the line:

I choose (0,2) and (4,1), we get:

$\frac{1-2}{4-0} = \frac{-1}{4}$

That's our slope.

Next we need to find the y-intercept( $b$ ). We can find that by looking at the graph. It is where x=0. So in this case y=2 when x=0.

So in point-slope form the equation is:

$y=-\frac{1}{4}x+2$

7 0

3 years ago

3. What is the location of item 3?

Anna [14]

Answer:

(-1,-2.5)

Step-by-step explanation:

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4 0

3 years ago

5[x-(4x-5)]=3-8x <br> Solving for x

stiv31 [10]

5(x-4x+5)=3-8x
5x-20x+25=3-8x
-15x+25=3-8x
-7x+25=3
-7x=-22
x= 22/7

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3 years ago

At a factory that produces pistons for cars, Machine 1 produced 174 satisfactory pistons and 116 unsatisfactory pistons today. M

m_a_m_a [10]

Answer:

$0.7$ is the probability that the piston chosen from Machine 1 is satisfactory and the piston chosen from Machine 2 is unsatisfactory

Step-by-step explanation:

The two events are independent of each other.

Hence the probability of choosing satisfactory piston from Machine 1 and unsatisfactory piston from Machine 2 is equal probability of choosing satisfactory piston from Machine 1 + probability of choosing unsatisfactory piston from Machine 2

Substituting the given values we get

Probability of choosing satisfactory piston from Machine 1 and unsatisfactory piston from Machine 2 = $\frac{174}{174 +116} + \frac{20}{180 +20}$

= $\frac{174}{174 +116} + \frac{20}{180 +20}$

= $= \frac{174}{290} + \frac{20}{200}\\= 0.6 + 0.1\\= 0.7$

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3 years ago

Mr. Chin's hotel bill is $143. He leaves 12% of the hotel bill as a tip for the housekeeping service. What is the total amount M

Tema [17]

Answer:

$160.16

Step-by-step explanation:

Multiply $143 and 12%

Make 12% as decimal: 0.12

143*0.12

$160.16

6 0

3 years ago

Math work pls help :)​

Math work pls help :)