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Lostsunrise [7]
3 years ago
13

Cuanto es r2-2r-7=0​

Mathematics
1 answer:
vekshin13 years ago
6 0

Answer:

Step-by-step explanation:

The solution is attached

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I DK I DK I DK I DK but maybe it’s already in that order
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Consider the following equations and name the property of equality used to solve for the variable.
Viktor [21]

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Answer:

  A. subtraction

  B. division

  C. multiplication

  D. addition

Step-by-step explanation:

Observe what is done to the variable. Choose the operation that turns the unwanted value into the appropriate identity element.

A. 3.75 is added. To make that value be 0, we subtract 3.75.

B. -3 is multiplied. To make that value be 1, we divide by -3.

C. m is divided by 5. To make that 1/5 multiplier be 1, we multiply by 5.

D. 4 is subtracted. To make that value be zero, we add 4.

_____

<em>Additional comment</em>

Since subtraction is the same as addition of the opposite, and division is the same as multiplication by the reciprocal, the only two properties we really need are the <em>addition property</em> and <em>multiplication property</em>. Your grader may disagree.

5 0
3 years ago
The double box plot shows the test scores for Miss Robinson's second and fourth period
Gennadij [26K]
We can’t see the box plot?
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Jennifer has a taco stand.she found that her daily costs can be modeled by C(x)=x^2-40x+610. if she wants to keep her daily cost
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Let's focus on the given equation. The C represents the cost, while the x must be the number of tacos, which is what we're solving for. Since we're given the boundary that C must be 300, then the solution would be:

300 = x² - 40x + 610
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Apply the quadratic formula where a = 1, b = -40 and c = 310. The roots of x are:
x = 29.49≈30
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<em>Thus, she needs to sell either 30 or 11 tacos.</em>

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3 years ago
He length of a rectangle is 1 inch less than twice it's width. If the width is w inches,which expression gives the length?
Gnesinka [82]
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