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d1i1m1o1n [39]
3 years ago
6

6.8x+9.3 = -9.4+3,4(2-5x) 6.8x+9.3 = -9.4+6.8 -17 6.8x+9.3 = -2.6-17x

Mathematics
1 answer:
Advocard [28]3 years ago
7 0

Answer:

x = -0.5

Step-by-step explanation:

From your last step:

6.8x + 9.3 = -2.6 - 17x

We have two terms with x in them on different sides of the equation, so we want to bring the 'x terms' over to the same side.

Add 17x to both sides of the equation.

6.8x + 17x + 9.3 = -2.6

Collect like terms

23.8x + 9.3 = -2.6

Subtract 9.3 from both sides

23.8x = -2.6 - 9.3

23.8x = -11.9

Divide both sides by 23.8

x = -0.5

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Samantha invested in the Graham Corporation. Samantha bought n number of shares for d dollars and paid a 2% commission to her br
DiKsa [7]

Answer:

Net Proceeds = Selling Price - Total Cost Price

a. Samantha

Total Cost Price;

Bought shares for d dollars and paid 2% commission = d + (d * 2%) = 1.02d

Selling Price;

Sold stock for s dollars and paid flat fee of $11 = s - 11

Net Proceeds = (s - 11) - 1.02d

b. Alex

Total Cost Price;

Bought x dollars worth and paid 1% commission = x + (x * 1%) = 1.01 * x = 1.01x

Selling Price;

Value falls to y and Alex pays 1.25% when he sells = y - (y * 1.25%) = y - 0.0125y = 0.9875y

Net Proceeds = 0.9875y - 1.01x

4 0
3 years ago
What is the perimeter of a semicircle if the diameter is 2
e-lub [12.9K]

Answer:

Step-by-step explanation:

d = 2

arc length of semicircle = ½×circumference = ½×πd = π

perimeter of semicircle = π + d = π+2

4 0
2 years ago
Read 2 more answers
Write an equation of the line that passes through (1,2) and is parallel to the line y = -5x +4
STatiana [176]

Answer:

y=-5x+7

Step-by-step explanation:

Prallel lines have the same slope

so the slope of  the unknown line is -5

and passes through(1,2)

y-2=-5(x-1)

slope-intercept form:y=-5x+7

6 0
3 years ago
What is the approximate volume of a right cone with a diameter of 10 meters and a height of 5 meters use 3.14 pie
ehidna [41]
First of all, it's not pie. It's pi.

Now, the problem.
Radius is always 1/2 x d (d meaning diameter)
That gives us 5.

The formula is 3.14 x 5^2(h/3)
If you solve it from left to right, you get 130.83
7 0
3 years ago
Read 2 more answers
A bacteria culture starts with 100 bacteria and doubles in size every half hour.
taurus [48]

Answer:

y=25600

y=100(2)^{2t}

y=252

Step-by-step explanation:

A bacteria culture starts with 100 bacteria and doubles in size every half hour.

y=100(2)^{2x}

where x represents the number of hours

(a) t= 4 hours

Plug in 4 for t  and find out the number of bacteria y

y=100(2)^{2 \cdot 4}\\y=25600

25600 bacteria

y=100(2)^{2t}

convert 40 seconds into hour

40 divide by 60 =2/3

y=100(2)^{2\frac{2}{3} }\\y=100(2)^{\frac{4}{3} }\\\\y=252

The graph is attached below

4 0
3 years ago
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