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jekas [21]
3 years ago
7

If x=2y+1 what is th e value of 10y-5x

Mathematics
1 answer:
gregori [183]3 years ago
4 0

x=2y+1

what is 10y-5x?

all you gotta do is substitute the value of x in the equation:

x=2y+1\\10y-5(2y+1)

now solve for y:

10y-5(2y+1)\\10y-10y-5=-5

so the value of 10y-5x = \boxed{-5}

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If the length of a box is 17 cm breadth is 6 cm and volume is 1020 cube find the height of the box​
alexandr1967 [171]

Answer:

10 cm

Step-by-step explanation:

17×6×h=1020

102h=1020

h=1020/102=10

h=10 cm

4 0
3 years ago
Number 2 is the problem i need help with
Reptile [31]

Answer:

2a) $180

2b) $1440

Step-by-step explanation:

2a) Basically Samuel works for 6 hours a day and earns 7.50 per hour, so you have to do 7.50 x 6 to see how much he earns per day (which in this case is $45). You then have to multiply $45 to 4 since he earns $45 per day and works 4 days per week (which is $180).

2b) After finding out how much he earns per week ($180 from the previous question), you then have to multiply $180 by 8 as $180 is the amount he earns per week and since he works for 8 weeks you have to multiply $180 by 8 (the answer is then $1440).

sorry if I'm not making sense, i tried :) good luck!

8 0
3 years ago
Read 2 more answers
Answer Please this is really important
trapecia [35]

Answer:

B) Parallel

Step-by-step explanation:

The lines have the same slope of \frac{4}{3}. This makes the lines parallel.

Hope it helps!

3 0
3 years ago
Read 2 more answers
Can someone help with this problem on literal equations to get variable A by itself? Will give lots of points
-BARSIC- [3]

Answer:

Step-by-step explanation:

Part A

xf = xo + vo* t + 1/2 a*t^2                    Subtract xo

xf - xo = 0*t + 1/2 a*t^2                        multiply by 2

2(xf - xo) = at^2                                    divide by t^2

2(xf - xo ) / t^2 = a

Part B

Givens

xo =0

vo = 0

a = 10  m/s^2

xf = 120 m

Solution

xf = xo + vo* t + 1/2 a*t^2              Substitute the givens

120 = 0 + 0 + 1/2 * 10 * t^2            Multiply by 2

120*2 = 10* t^2                  

240 = 10*t^2                                  Divide by 10

240/10  = t^2

24 = t^2                                          take the square root of both sides.

√24 = √t^2

t = √24

t = √(2 * 2 * 2 * 3)

t = 2√6

8 0
3 years ago
Suppose 86% of 50 people at a law firm like their job. How many people like their job.
solniwko [45]
To find 86% of 50, you do 50*.86 (because .86 is the decimal form of the percentage 86%)

50*.86=43 people

Hope this helps
8 0
3 years ago
Read 2 more answers
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