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3 years ago

-1/2(x+4)=y-2 2x-y=4 Find the slope, x-intercept, and y-intercept for both equations

Mathematics

1 answer:

FinnZ [79.3K]3 years ago

7 0

Answer:

Step-by-step explanation:

slope of a linear equation is m = y2 -y1/x2-x1

x- intercept, is where y = 0

y- intercept is where x = 0

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Identify the percent of change as an increase or a decrease. 16 centimeters to 44.2 centimeters. Find the percent of change.

ra1l [238]

44.2-16=28.2
then you take 28.2/44.2=0.6380...
multiply that by 100 to get 63.8%

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3 years ago

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A gold mine has two elevators, one for equipment and another for the miners. The equipment elevator descends 4 feet per second.

GrogVix [38]

Answer:

140 feet

Step-by-step explanation:

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3 years ago

Solve this equation please-<br><br> 5³ + (-9) (2) ÷ 6

valentina_108 [34]

<h2>Answer:</h2><h2>122</h2>

Step-by-step explanation:

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3 years ago

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A ray of light with intensity lo falls vertically on the sur face of the sea and at ten meters deep its intensity is 10/3. Assum

seropon [69]

Answer:

intensity = $\frac{Io}{15}$

intensity = $\frac{Io}{30}$

depth = 333.33 m

Step-by-step explanation:

given data

deep = 10 m

intensity = Io

intensity = Io/3

to find out

intensity of light at 50 m and 100 m and 1/100 of initial intensity remain ?

solution

we know here that intensity is inversely proportional to deep so

intensity = k × $\frac{1}{Deep}$ .................1

here k is constant

so we have given 10 m deep so

$\frac{Io}{3}$ = $\frac{k}{10}$

so k = Io × $\frac{10}{3}$ ................2

so from equation 1 when 100 m deep and 50 m deep

intensity = k × $\frac{1}{Deep}$

intensity = Io × $\frac{10}{3}$ × $\frac{1}{50}$

intensity = $\frac{Io}{15}$

and

intensity = Io × $\frac{10}{3}$ × $\frac{1}{100}$

intensity = $\frac{Io}{30}$

and

at intensity Io/100

intensity = k × $\frac{1}{Deep}$

$\frac{Io}{100}$ = Io × $\frac{10}{3}$ × $\frac{1}{D}$

D = 333.33 m

so depth = 333.33 m

3 0

3 years ago

Nicole has x marbles. Together we have 44 marbles. How many marbles will I have if I lose 1/4 of my marbles ?

zubka84 [21]

Answer:

I have:

33 - 3N/44 marbles

N = marbles of Nicole

Step-by-step explanation:

Nicole + me = 44 marbles

m = 44 - N

m = me

N = Nicole

if i lose 1/4 of my marbles

4/4 - 1/4 = 3/4

i have left:

3/4 of my marbles

then:

m = 3(44-N)/4

m = 3*44/4 + 3*-N/44

m = 33 - 3N/44

I have finally:

33 - 3N/44

5 0

4 years ago