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RideAnS [48]
3 years ago
8

Explain how you would find the sign of the quotient of 32 divided by -2 over -16 divided by 4

Mathematics
1 answer:
galina1969 [7]3 years ago
5 0
You would find the sign if the signs are not the same if you are dividing or multiplying its negitve if its the same its positive
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Evaluate 3 + (a + 4)(8 - b) when a = 5 and b = 6.<br> The value of the expression is
levacccp [35]

Answer:

21

Step-by-step explanation:

you plug in 5 for a and 6 for b and solve.

8 0
3 years ago
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X^2-14x-4=0, solve by completing the square
REY [17]
The answer is: x = 7 - √53      or      x = 7 + √53

The general quadratic equation is: ax² + bx + c  = 0.
But, by completing the square we turn it into: a(x + d)² + e = 0, where:<span>
d = b/2a
e = c - b²/4a
Our quadratic equation is x² - 14x -4 = 0, which is after rearrangement:
So, a = 1, b = -14, c = -4
Let's first calculate d and e:
d = b/2a = -14/2*1 = -14/2 = -7
e = c - b²/4a = -4 - (-14)</span>²/4*1 = -4 - 196/4 = -4 - 49 = -53<span>
By completing the square we have:
a(x + d)² + e = 0

1(x + (-7))</span>² + (-53) = 0
(x - 7)² - 53 = 0
(x - 7)² = 53
x - 7 = +/-√53
x = 7 +/- √53

Therefore, the solutions are:
x = 7 - √53
or
x = 7 + √53
4 0
2 years ago
Read 2 more answers
What is the order, from narrowest to widest graph, of the quadratic functions f (x) = -10x2, f (x) = 2x2, and f (x) = 0.5x2?
Varvara68 [4.7K]

The <em>correct answer</em> is:

f(x) = -10x², f(x) = 2x², and f(x) = 0.5x²

Explanation:

For a quadratic in standard form, f(x) = ax²+bx+c, the value of a describes the width and direction of the parabola. If a is positive, the parabola is open upward. If a is negative, the parabola is open downward.

If a < 1, a fraction or decimal, the graph is wider than the parent function f(x)=x². If a > 1, the graph is narrower than the parent function f(x)=x². The larger the value of a is (a > 1), the narrower the graph is. This makes the function with the decimal value of a the widest; the remaining graphs are in order of the value of a, least to greatest.

3 0
3 years ago
Read 2 more answers
Describe two diffrent ways you could find the measure of
umka21 [38]

Measure of what? I'll help you in the comments if you can tell me.

6 0
3 years ago
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If y varies directly as x, and y = 12 when x = 4, what is the value of y when x = 7 ?
Tamiku [17]

Answer:21

(7*12)/4

Step-by-step explanation:

7 0
3 years ago
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