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mojhsa [17]
3 years ago
13

Last one , will mark brainliest !!!!

Mathematics
2 answers:
balu736 [363]3 years ago
8 0

Answer:

See answers in explanation below

Step-by-step explanation:

1.   4298 + 426t = 6129 + 223t

2. Basically get into the graphing page and find "function" section then select "f(x) = mx + b", then graph f(x) = 426x + 4298 and f(x) = 223x + 6129

and find the answer at where these two lines intersect with each other, x=9.0197 (months)

3. sub x=9.0197 into any of the two equation and f(x) = 8140 (miles)

Reil [10]3 years ago
7 0

Answer:

Step-by-step explanation:

Part 1:y=426x+4298

        y=223x+6129

Part 2: x=9.020 (x is the number of months and y is the miles)

Part 3: y=8140.394, or 8,140 since it's rounding to the nearest mile

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The approximate time between two high tides or<br> two low tides is?
NeX [460]

Answer:

It's (very roughly) 12 hours from one high tide to the next, and of course the same for low tides. That's because the tides produced when the Moon is directly overhead or in the opposite direction are the same. Same with two low tides, since there are two tides a day (both low and high).

5 0
3 years ago
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A piece of rope 27m long is cut into two pieces so that one piece is four-fifths as long as the other. Find the length of each p
nata0808 [166]

Answer:

x+.8x=27

1.8x=27

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Step-by-step explanation:

8 0
2 years ago
The cost for an order of 100 kilograms of steel bars is $230. The cost for an order of 150 kilograms of steel bars is $320. Writ
luda_lava [24]

Answer:

y = 9x/5 + 50

Step-by-step explanation:

We are represent the information as coordinate (x,y)

If the cost for an order of 100 kilograms of steel bars is $230, this is expressed as (100, 230)

Also if the cost for an order of 150 kilograms of steel bars is $320, this is expressed as;

(150, 320)

Find the equation of a line passing through the points. The standard form of the equation is expressed as y = mx+c

m is the slope

c is the intercept

Get the slope;

m = y2-y1/x2-x1

m = 320-230/150-100

m = 90/50

m = 9/5

Get the y-intercept by substituting m = 9/5 and any point say (100, 230) into the expression y = mx+c

230 = 9/5(100)+c

230 = 9(20)+c

230 = 180 + c

c = 230-180

c = 50

Get the required equation

y = mx+c

y = 9/5 x + 50

Hence an equation for the cost of an order of steel bars (y) in terms of the weight of steel bars ordered (x) is y = 9x/5 + 50

4 0
3 years ago
(08.05 lc) of a semicircle was rotated about the y-axis, like the one shown below, what would be the resulting three-dimensional
PIT_PIT [208]
It would be a sphere

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3 years ago
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3(4x^2y^3 + 2x^3) – 4(9x^3y^2 – 6x^2y^3)<br> How to solve pls?
babunello [35]

Answer:

3(4 {x}^{2}  {y}^{3} + 2 {x}^{3}) - 4(9 {x}^{3}  {y}^{2}  - 6 {x}^{2}  {y}^{3} ) \\  = (12 {x}^{2}  {y}^{3}  + 6 {x}^{3} ) - (36{x}^{3}  {y}^{2} - 24{x}^{2}  {y}^{3}) \\  = (12 {x}^{2}  {y}^{3}  + 6 {x}^{3} )  +  ( - 36{x}^{3}  {y}^{2}  +  24{x}^{2}  {y}^{3}) \\  = - 36{x}^{3}  {y}^{2}  + 36x^{2}  {y}^{3} + 6 {x}^{3}

I hope I helped you^_^

4 0
3 years ago
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