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steposvetlana [31]
3 years ago
5

This morning, Mandy took a history test. There were 70 multiple-choice problems on the test and Mandy answered 70% of them corre

ctly. How many problems did Mandy get right?
Mathematics
1 answer:
Anna71 [15]3 years ago
3 0
I believe She got 50 correct
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Use the x-intercept method to find all real solutions of the equation.<br> x^3-8x^2+9x+18=0
meriva

Answer:

a. x=-1,3,\:or\:6

Step-by-step explanation:

The given equation is;

x^3-8x^2+9x+18=0

To solve by the x-intercept method we need to graph the corresponding function using a graphing calculator or software.

The corresponding function is

f(x)=x^3-8x^2+9x+18

The solution to x^3-8x^2+9x+18=0 is where the graph touches the x-axis.

We can see from the graph  that; the x-intercepts are;

(-1,0),(3,0) and (6,0).

Therefore the real solutions are:

x=-1,3,\:or\:6

8 0
4 years ago
Read 2 more answers
Write the equation in slope-intercept form show all your work<br> 3x + 7 = 9
jeka57 [31]
3x=2
x= 2/3

slope is undefined. there is no y intercept
3 0
3 years ago
Find the distance between the points <br> (-8,-6) and (4, 10)
never [62]

Answer:

d=20

Step-by-step explanation:

To find the distance between 2 points we use the distance formula

d = √(x2 - x1)²+(y2 - y1)²

The given points are (x1= -8, y1 = -6) and (x2 = 4, y2 = 10).

Substitute the given points into the distance formula.

d = √(4 + 8)²+(10 +6)²

d = √144+252

d= √400

d = 20

3 0
3 years ago
I answered wrong what’s the right answer?
olganol [36]
The answer is CBE :)))))
6 0
3 years ago
4x^2-16=x^2+32<br> Using reverse PEMDAS
telo118 [61]

Answer:

x = ±4 (x = 4 and x = -4)

Step-by-step explanation:

4x²-16 = x²+32

3x²-16 = 32

3x² = 48

x² = 16

x = ±4

Therefore, x = 4 and x = -4

5 0
3 years ago
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