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SVETLANKA909090 [29]
3 years ago
9

PLEASE HELP ME BY ANSWERING AT LEAST 2 QUESTIONS ITS DUE IN 20 MINUTES

Mathematics
1 answer:
Allisa [31]3 years ago
3 0

Answer:

Barry gets 300 first

Cheri gets 30 first

Barry gets 100 first

Representations:

Barry's profit = 5c + 20

Cheri's profit = 2c + 40

Step-by-step explanation:

well Barry's pprofit is

B = 5c + 20

and Cheri's profit is

C = 2c + 40

let's see who will get 300 first:

300 = 5c + 20

280 = 5c

56 = c

300 = 2c + 40

260 = 2c

130 = c

SO for 300 it is Barry who gets it first... same steps for others

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Paladinen [302]
2 + 1 = 3
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4 0
2 years ago
Read 2 more answers
If a 24-kg mass stretches a spring 15 cm, what mass will stretch the spring 10 cm
natulia [17]

Answer:

<h2>16kg</h2>

Step-by-step explanation:

 This problem is borers on elasticity of materials.

according to Hooke's law,<em> "provided the elastic limit of an elastic material is not exceeded the the extension e is directly proportional to the applied force."</em>

F= ke

where F is the applied force in N

          k is the spring constant N/m

          e is the extension in meters

Given data

mass m= 24kg

extensnion=15cm in meters= \frac{15}{100}= 0.15m

we can solve for the spring constant k

we also know that the force F = mg

assuming g=9.81m/s^{2}

therefore

24*9.81=k*0.15\\235.44=k*0.15\\k=\frac{235.44}{0.15} \\k=1569.6N/m\\

We can use this value of k to solve for the mass that will cause an extension of  10cm= 0.1m

x*9.81=1569.6*0.1\\\\x= \frac{156.96}{9.81} \\\x= 16kg

5 0
3 years ago
I need help with this. i will add you as a brillance if you get this right
Crank

Answer:

i think its b and c

Step-by-step explanation:

8x+7+4x and 12x+7 are the same just not simplified

7 0
3 years ago
Plz help ASAP!!!!!!!!!<br><br> thanks
iogann1982 [59]

Answer:

D (Last one)

Step-by-step explanation:

Reflections and rotations dont change the side lengths or angles of a shape, dilations do.

7 0
3 years ago
PLEASE HELP!!!! Which quadratic equation is part of the solution process for solving this rational equation using the least comm
Nadya [2.5K]

Step-by-step explanation:

A. x²-x-10=0

is part of the solution process for solving this rational equation using the least common denominator

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2 years ago
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