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3 years ago

What are the slope and y-intercept of the equation 2x - 5y = -10?

Mathematics

1 answer:

sergiy2304 [10]3 years ago

7 0

Answer:

Step-by-step explanation:

y=2/5x+2

x= 5/2y-5

hopefully this works

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State the degree of the polynomial -x4

emmainna [20.7K]

-x^4

The degree is the exponent, and he amount of degrees there are depends on the amount of degrees in each monomial.

In this case, there is only one monomial, with it's degree as 4

4 is your answer

hope this helps

6 0

3 years ago

Richard Saltwood’s car averages 620 miles on its 20-gallon tank of gas. If Richard runs out of gas and a mechanic comes to his r

grandymaker [24]

Well first you have to divide 620/20 which is 31. So his car goes 31 miles per gallon so you have 2 gallons and .25 of a gallon. So first off 2*31=62 miles then the 1/4 or .25. Multiply the 31 by .25 which is 7.75 now add 62 and 7.75 and you get how far his car can go.

62+7.75=69.75 miles

7 0

3 years ago

80 is 40% of what number?

Artist 52 [7]

$x-number\\\\40\%x=80\\\\40\%=\frac{40}{100}=0,4\\\\0,4x=80\ \ |:0,4\\\\x=\frac{80}{0,4}=200\\\\ 80\ is\ 40\% \ of\ 200.$

6 0

3 years ago

The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past

galina1969 [7]

Complete Question

The complete question is shown on the uploaded image

Answer:

1 ) The correct option B

2) The correct option is C

3) The correct option is C

4) The correct option is C

Step-by-step explanation:

From the question we are told that

The proportion that own a cell phone is $p = 0.90$

The sample size is n = 15

Generally the appropriate distribution for X is mathematically represented as

$X \ is \ B( n , p )$

$X \ is \ B( 15 , 0.90 )$

Generally the number students that own a cell phone in a simple random sample of 15 students is mathematically represented as

$\mu = n * p$

$\mu = 15 * 0.90$

$\mu = 13.5$

Generally the standard deviation of the number of students who own a cell phone in a simple random sample of 15 students is mathematically represented as

$\sigma = \sqrt{ n * p * q }$