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Sholpan [36]
3 years ago
11

Chase is 57 years younger the. Kori. 8 years ago Kori age was 4 times Chase age. how old is chase

Mathematics
2 answers:
Sladkaya [172]3 years ago
4 0
Chase is 27 years old. Simplify the equations k-c+57 and k-8=4(c-8). Hope this helps
soldi70 [24.7K]3 years ago
4 0
C= chase
K= kori (c+57)
4(c-8) = c + 57-8
4c-32 = c+ 49
3c = 81
c= 27. K= 84
8 years ago
C= 19 k = 76
4x19 = 76
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Tasya [4]

Answer:

The instructor’s initial charge is $20

see the attached figure

Step-by-step explanation:

Let

x ----> the time in hours

y ----> the total cost in dollars

we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the slope or the unit rate of the linear equation

b is the y-intercept or initial value (in this problem is the instructor’s initial charge)

we have

The slope is equal to the  hourly rate

so

m=\$8.00\ per\ hour

substitute

y=8.00x+b

To find out the y-intercept join the given points in the graph and find out the value of y when the value of x is equal to zero

see the attached figure

The y-intercept is the point (0,20)

therefore

The instructor’s initial charge is $20

<u><em>Verify</em></u>

take any point on the graph

(5,60)

For x=5, y=60

substitute in the linear equation and solve for b

60=8.00(5)+b

60=40+b

b=\$20 ----> is ok

therefore

The instructor’s initial charge is $20

4 0
3 years ago
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A machine that cost £35,000 is operated 8 hours a day in a 5-day week but one hour each day is used for test purposes. For use o
MArishka [77]
1 hour each day is used for test
so 8-1=7 used per day

so commercial is 1 in the 4:2:1 so
4+2+1=7
ok, so 7 units, 7 hours
4 hour for private
2 hour for research
1 hour of commerical

4*5=20=private
2*15=30=research
1*4=40=commercial


20+30+40=90

percent from commercial
40/90=0.44444444444≈44.44% about 44%
6 0
3 years ago
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Which of the following has the greatest value?
Whitepunk [10]
A
Because 0.8 is equaled to 8/10 which is greater than all
6 0
3 years ago
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Write the formula for a function d(x) that describes the distance between the point P and a point (x,y) on the line. You final a
vlabodo [156]

Answer:

d(x) = √[(x - 2)² + (3x - 1)²]

Step-by-step explanation:

The distance between two points with coordinates (x₁, y₁) and (x₂, y₂) is given as

d = √[(x₂ - x₁)² + (y₂ - y₁)²]

So, the distance between point (2,0) and a point (x,y)

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d = √[(x - 2)² + (y)²]

But the point (x,y) is on the line y = 3x - 1

We can substitute for y in the distance between points equation.

d(x) = √[(x - 2)² + (3x - 1)²]

QED!

6 0
3 years ago
A rectangle has an area of 144x^2-81. What is the length and the width?
Studentka2010 [4]

Answer:

thanks

Step-by-step explanation:

for asking this i need the answer too

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