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BARSIC [14]
4 years ago
13

An investor bought 400 shares of stock, some at $7.00 per share and some at $1.00 per share. If the total cost was $1450.00, how

many shares of each stock did the investor buy?
Mathematics
1 answer:
Alja [10]4 years ago
4 0
57 at 7.oo dollars is 399 so he bought 1 more at 1 dollar
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line y = 2x+1 is transformed by a dialation with a scale factor of two and centered at (0,-4). what is the equation of the image
Gekata [30.6K]

Answer: y = 2x + 6

Step-by-step explanation:

Here the equation of line,

y = 2x + 1

y-intercept of the line is, (0, 1)

And, the slope of the line is 2.

Since, If a point (x,y) is dilated by a scale factor k about a point (a,b),

Then transformed point are get by,

(x,y)\rightarrow (k(x-a)+a, k(y-b)+b)

Thus, The transformed point of point (0,1) when dilation is occur by the scale factor 2 about the point (0,-4),

(0,-4)\rightarrow (2(0-0)+0, 2(1+4)-4)

(0,-4)\rightarrow (0, 6)

Thus, the point of the new line is (0,6)

And, the slope of the new line is 2 ( because in the dilation, the slope of the line does not change)

Thus, the equation of new line,

(y - 6) = 2 (x - 0)

y - 6 = 2x

y = 2x + 6


5 0
3 years ago
Solve: -4x &lt; 20 <br> x &lt; 5<br> x &gt; 5<br> x &lt; -5<br> x &gt; -5
Thepotemich [5.8K]
The answer is x > -5

8 0
3 years ago
Read 2 more answers
I need help don’t understand
nadya68 [22]
If f(x)=x+1 and then x became 2, you would have the function f(x)=3. So basically for that function you would be going up three over 1. That function is already g(x)=4x. If X became 2, you would have g(x)=8x. The rate of up 8 and then over one. Because of that, g(x) would be higher
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Answer:

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Step-by-step explanation:

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Total earnings for d days:

80d

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The algebraic expression is 80d

Algebraic equation is

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y= total income earned in d days

The expression is different from am equation because of the equal to sign(=)

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4 years ago
Determine if the functions are even, odd or neither.
marusya05 [52]
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