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Setler [38]
3 years ago
15

I will mark you if you help me

Mathematics
1 answer:
Paraphin [41]3 years ago
7 0
Slope intercept form: y=-0.25x+2.5

Graph shown below

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What is the value for x and what is angle b?
iVinArrow [24]

Answer: The value of x is 6.  The measure of angle B is 20 degrees.

Step-by-step explanation:

3x + 2  + 55 = 13x- 3

3x + 57 = 13x -3

-3x         -3x  

   57 = 10x -3

   +3            +3

60= 10x

x= 6

  3(6) +2 = m∠B

 20= m∠B

5 0
3 years ago
How can you estimate 1,506 divided 2 so that it is close to the actual answer
NeTakaya
Think of dividing by 2 splitting it in half, if you round it you get about 1500 then split that in half. it would be around 750.
7 0
3 years ago
A tank contains 100 kg of salt and 1000 L of water. A solution of a concentration 0.05 kg of salt per liter enters a tank at the
Umnica [9.8K]

Answer:

Step-by-step explanation:

Initial Quantity of salt Q(0) = 100 kg

Capacity of tank = 1000 L

Inflow of liquid = 10 l /minute and outflow = same rate thus leaving the content of volume 1000 L at any time

Assume after entering constantly mixes and drains out.

Concentration flow = inflow - outflow

= 0.05(10) - \frac{Q(t)}{1000} *10

i.e. Q'(t) = 0.5-0.01Q(t), Q(0) = 100

Q'(t) = -0.01(Q(t)-50), Q(0) = 100\\\frac{dQ}{Q-50} =-0.01 dt\\ln |Q-5| = -0.01t +C\\Q-50 = Ae^{-0.01t}

Use Q(0) = 5

-45 = A  

So the equation would be

Q-50 = -45 e^{-0.01t} \\Q(t) = 50-45 e^{-0.01t} \\

a) Initial concentratin = \frac{100}{1000} =0.10

b) Use the solution fo rDE substitute t =1

Q(1) = 50-45e^(-0.01) = 5.4477 kg

c) As t becomes large Q = 50

So concentration limit = 50/1000 = 0.05

8 0
3 years ago
Find m Angle DEH and m Angle FEH.
horrorfan [7]

Answer:

13x + 10x + 21 = 90 \\ 23x + 21 = 90 \\ 23x = 69 \\ x = 3

The measure of angle DEH

13(3) = 39 \: degrees

commercial angle FEH

10(3) + 21 =  \\ 30 + 21 = 51 \: degrees

7 0
3 years ago
Apparently what I chose was incorrect. Which ones are correct?
ch4aika [34]

Step-by-step explanation:

numbers one two and three are correct

4 0
3 years ago
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