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LuckyWell [14K]
3 years ago
5

Factor the equation using zero product. x2-4x=5

Mathematics
1 answer:
katovenus [111]3 years ago
6 0
Subtract 5 from each side. Use MAN strategy to determine that x = 5 and x = -1.
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PLEASE HELP!!! 100 points (:
Alex73 [517]

Answer: The ladder will be unsafe because its angle with the ground is greater than 70°.

Step-by-step explanation: hope that helps

7 0
3 years ago
Trish and Aria are walking to raise money for the school library. Trish has walked 38 miles and walks 10 miles each week. Aria h
schepotkina [342]

Answer:

C. 4 weeks

Step-by-step explanation:

Trish and Aria are walking to raise money for the school library. Trish has walked 38 miles and walks 10 miles each week. Aria has walked 30 miles and walks 12 miles each week

After how many weeks will Trish and Aria have walked the same number of miles? A. 2 weeks B. 3 weeks C. 4 weeks D. 5 weeks

Trish = 38 + 10x

Aria = 30 + 12x

Where,

x = number of weeks

After how many weeks will Trish and Aria have walked the same number of miles?

Equate both equations

38 + 10x = 30 + 12x

38 - 30 = 12x - 10x

8 = 2x

x = 8/2

x = 4 weeks

5 0
3 years ago
Question 4 (Essay Worth 10 points) (06.04 HC) A figure is located at (2.0), (2, -2), (6, -2), and (6.0) on a coordinate plane. W
lukranit [14]

Answer: cylinder

Step-by-step explanation:

7 0
3 years ago
A 5 in by 7in photograph is surrounded by a frame of uniform width the area of the frame equals the area of the photograph find
alexira [117]

<span>Let x be the width of the frame. 
Area of the picture is 5*7 = 35 sq in</span>

Area of the frame given as the same, frame = 35 sq in also

<span>
Therefore the total area (picture & frame) will be 70 sq in</span>

<span>

A simple equation would be made and it will look like this: (7+2x) * (5+2x) = 70

</span>

<span>Using the FOIL method
35 + 14x + 10x + 4x^2 = 70
4x^2 + 24x + 35 - 70 = 0; subtract 70 from both sides:
4x^2 + 24x - 35 = 0</span>

<span>
unluckily this will not factor easily, so we should use the quadratic equation:
where: a = 4; b = 24; c = -35</span><span>
</span><span> x = -b sqrt b^2 – 4*a*c divided by 2 * a</span><span>

  x = -24</span> ±<span> sqrt 24^2 -4*4*(-35) divided by 2*4

 x = -24 </span>±<span>sqrt 576 - -(560) divided by 8

 x = -24 </span>± sqrt 576 + 560 divided by 8<span>

 x = -24 </span>± sqrt1136  divided by 8<span>

 x = -24 + 33.7046 divided by 8
x =   9.7046 divided by 8
x =1.213 inches is the answer</span>

<span> </span>

6 0
3 years ago
Help! 9% ___ 0.4 it's an inequality
devlian [24]
9% is less than 0.4. 0.4 is really 4/10 which is 40% 40 is greater than 9 therefore 9% is less than 0.4
4 0
3 years ago
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