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liubo4ka [24]
4 years ago
11

Using the zero product property to find the solutions to the equation 2x^2-x-15=x(x+1)

Mathematics
1 answer:
alex41 [277]4 years ago
6 0

The answer would be C. x=-3 or x=5.

You can find this answer using the zero product property and the quadratic formula. Hope this helps :)

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Three months later, Pepe averaged a speed of 4/5 of a mile in 1/10 of an hour, while Paula averaged 5/6 of a mile in 1/12 of an
MAVERICK [17]

Answer:

2 miles per hour

Step-by-step explanation:

We have to calculate the miles per hour of each person

Formula = Distance in miles/ Time in hours

a) For Pepe

Pepe averaged a speed of 4/5 of a mile in 1/10 of an hour

Hence,

= 4/5 miles / 1/10 hour

= 4/5 miles ÷ 1/10 hour

= 4/5 miles × 10/1 hour

= 8 miles per hour

b) For Paula

Paula averaged 5/6 of a mile in 1/12 of an hour.

Hence,

= 5/6 miles / 1/12 hour

= 5/6 miles ÷ 1/12 hour

= 5/6 miles × 12 hour

= 10 miles per hour

Therefore, In miles per hour, the number of miles Paula ran faster than Pepe is calculated as:

10 miles per hour - 8 miles per hour

= 2 miles per hour

3 0
3 years ago
Complete the equation for the linear function whose graph contains the point (-1,2) and has a slope of 0.9.
Mnenie [13.5K]
Plug it into point-slope form.

y - y1 = m(x - x1)

Where y1 is the y-value of the point, x1 is the x-value, and 'm' is the slope.

So plug in -1 for x1, 2 for y1, and 0.9 for 'm':

y - 2 = 0.9(x + 1)

Simplify to get in slope-intercept form:

Distribute 0.9 into the parenthesis:

y - 2 = 0.9x + 0.9

Add 2 to both sides:

y = 0.9x + 2.9
4 0
4 years ago
In 2010, the world's largest pumpkin weighed 1,810 kilograms. An average-sized pumpkin weighs 5,000 grams.
netineya [11]
An average-sized pumpkin weighs .276% of the world's largest pumpkin. 
7 0
3 years ago
Graph the equation.<br>2y-9= -2 please show work​
Ivan

Answer:5.5

Step-by-step explanation:

2y-9=-2

   +9  +9

2y/2 = 11/2

5.5

7 0
3 years ago
3x-9=-21 equation in words
sergeinik [125]
'nine less than three times a number is negative twenty-one.'
5 0
4 years ago
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