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stellarik [79]
3 years ago
10

I need the answers asap it's for pre calculus

Mathematics
1 answer:
Olegator [25]3 years ago
6 0
Jimrate=1/18boat per day

work=rate times time
1boat=(jimrate+harryrate) times 12
jimrate=1/18 boat per day
1boat=(1/18+harryrate) times 12
1boat=12/18+12harryrate
1boat=2/3+12harryrate
minus 2/3
1/3=12harryrate
times 1/12 both sides
1/36=harryrate


so harry needs 36 days

C
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What is the equation in point -slope form of a line that passes trough the points (3,-5) and (-8,4)
Ilia_Sergeevich [38]

Answer:

The equation in point - slope form of a line that passes through the points (3,-5) and (-8,4) is: y-(-5) = -(9/11) (x-3) or y+5 = -(9/11) (x-3)

Step-by-step explanation:

P1=(3,-5)=(x1,y1)→x1=3, y1=-5

P2=(-8,4)=(x2,y2)→x2=-8, y2=4

Equation in Point-Slope Form: y-y1=m(x-x1)

Slope: m=(y2-y1)/(x2-x1)

Replacing the known values:

m=[4-(-5)] / (-8-3)

m=(4+5) / (-11)

m=(9) / (-11)

m=-(9/11)

Equation in the point - slope form:

y-(-5) = -(9/11) (x-3)

y+5 = -(9/11) (x-3)

8 0
4 years ago
What is the simple interest value missing in the table? Principal $2,500 Interest rate 3.5% Time 5 years Interest ? $43.75 $437.
netineya [11]

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$4,3750.00

Step-by-step explanation:

Simple interest is calculated using the equation:

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Therefore, the interest is $43750.00

4 0
4 years ago
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7 0
3 years ago
A rectangular prism must have a base with an area of no more than 27 square meters. The width of the base must be 9 meters less
den301095 [7]

Answer:

The maximum height of the prism is 12\ m

Step-by-step explanation:

Let

x------> the height of the prism

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the area of the rectangular base of the prism is equal to

A=L*W

A\leq 27\ m^{2}

so

L*W\leq 27 -------> inequality A

W=x-9 ------> equation B

L=W+6 -----> equation C

Substitute equation B in equation C

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L=x-3 ------> equation D

Substitute equation B and equation D in the inequality A

(x-3)*(x-9)\leq 27-------> using a graphing tool to solve the inequality

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see the attached figure

but remember that

The width of the base must be 9 meters less than the height of the prism

so

the solution for x is the interval ------> (9,12]

The maximum height of the prism is 12\ m

8 1
3 years ago
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