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Kipish [7]
3 years ago
10

How would you write this in simplest form 4p-5 (p+6)=

Mathematics
1 answer:
pychu [463]3 years ago
7 0

Answer:

the answer is -p-30

Step-by-step explanation:

first you would distribute -5 to p and 6 = 4p-5p-30

second combine the like terms = -p-30

lastly it cannot be factored down any farther so the answer is just -p-30

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You swim in a 100-meter race. Your best time is 59.48 seconds. You want to swim the race in 51.55 seconds. How much will you nee
storchak [24]

Answer:

A. 7.93

Step-by-step explanation:

59.48 - 51.55 = 7.93  

Hope this helps!

3 0
3 years ago
Please help with math question
ELEN [110]

Answer:

y = 4x² -3x +5

Step-by-step explanation:

It can be helpful to plot the points on a graph. The curve through them opens upward, so you know <em>the first two answer choices are incorrect</em>.

<em>Looking at the location of the vertex</em>

The points (-1, 12) and (2, 15) have nearly the same y-value, so the vertex of the parabola will be nearly halfway between those points, at about ...

... x = (-1 +2)/2 = 1/2

Because the point at (2, 15) has a slightly higher y-value, you know it is farther from the vertex, so the vertex will be at an x-value that is less than 1/2.

For quadratic ...

... y = ax² +bx +c

the vertex is found at

... x = -b/(2a)

For the 3rd choice, this is x = -(-4)/(2·3) = 2/3. This is higher than 1/2, so we can eliminate this choice, too.

Only the 4th choice remains. (It passes the vertex location test: x = -(-3)/(2·4) = 3/8 < 1/2.)

_____

There are some other ways to solve this problem, too.

  1. try the given points in the given equations. The +5 as a constant of all of them tell you that all will work for x=0. Both of choices 3 and 4 work for x=-1, so we have to try x=2. Choice 3: 3·2² -4·2 +5 = 9, not 15. Choice 4: 4·2² -3·2 +5 = 15. So Choice 4 is the answer.
  2. write equations for a, b and solve them. a(-1)² +b(-1) +5=12; a(2)² +b(2)+5=15. or a-b=7, 2a+b=5 in standard form. Adding these gives 3a=12, so a=4 and Choice 4 is the answer.
  3. use a graphing calculator to write the quadratic regression formula from the three points. This result is shown in the attachment. The (a, b, c) = (4, -3, 5) correspond to Choice 4.

7 0
2 years ago
two forces of magnitude 100n and 70n act on an object. the angle between the forces is 120 degrees. what is the resultant force?
Katen [24]
The resultant force would be 88.88 N at an angle of 43 degrees from the 100 N force.
5 0
3 years ago
Complete the square to rewrite the following equation. Identify the center and radius of the circle. You must show all work and
Bond [772]

<em>x</em> ² - 4<em>x</em> + <em>y</em> ² + 8<em>y</em> = -4

(<em>x</em> ² - 4<em>x</em> + 4) + (<em>y</em> ² + 8<em>y</em> + 16) = -4 + 4 + 16

(<em>x</em> - 2)² + (<em>y</em> + 4)² = 16

(<em>x</em> - 2)² + (<em>y</em> + 4)² = 4²

which is the equation of a circle centered at (2, -4) and with radius 4.

8 0
3 years ago
Given ΔABC, AB=45 AC=CB=34 Find m∠B
Gnesinka [82]

Answer:

82.87

Step-by-step explanation:

Angle A and Angle B are equal.

The degree of a triangle is 180 degrees.

The equation is B^2+C=180

There's not enough information, but I used an online calculator.

I hope this helps!

pls ❤ and give brainliest pls

6 0
3 years ago
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