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SVEN [57.7K]
3 years ago
7

The problem is in the pictures, please show step by step how to do it. Thanks! :)

Mathematics
2 answers:
Rama09 [41]3 years ago
7 0

Answer:

-4,-5/2

Step-by-step explanation:

2x^2+3x-20 =0

2x^2+8x-5x-20 =0

2x(x+4)-5(x+4) =0

(x+4)(2x-5) =0

Either,

x+4=0

x=-4

Or,

2x-5=0

2x=5

x=5/2

vlada-n [284]3 years ago
5 0

2x^2+3x-20=0\\2x^2+8x-5x-20=0\\2x(x+4)-5(x+4)=0\\(2x-5)(x+4)=0\\x=\dfrac{5}{2} \vee x=-4

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A 24-foot ladder leans against a building. The foot
romanna [79]

Answer:

73°

Step-by-step explanation:

Here we use trigonometry to find the angle. The building and the ground form a perpendicular angle, with the ladder acting as the hypotenuse, we get a right angle. We know the length of adjacent leg from the angle, and the length of the hypotenuse. In this case, we use cosine since cos = adjacent length/hypotenuse length. So cos x= 7/24. To isolate x, we use the inverse function of cos, cos^-1. Then x= cos^-1 (7/24) or 73°.

5 0
3 years ago
A certain field is a rectangle with a perimeter of 862 feet. The length is 179 feet more than the width. Find the width and leng
Galina-37 [17]

Answer: length = 305 feet

Width = 126 feet

Step-by-step explanation:

Let L represent the length of the rectangular field.

Let W represent the width of the rectangular field.

The formula for determining the perimeter of a rectangle is expressed as

Perimeter = 2(L + W)

The perimeter of a garden is 88 feet. This means that

2(L + W) = 862

Dividing through by 2, it becomes

L + W = 431 - - - - - - - - - - - -1

The length is 179 feet more than the width. This means that

L = W + 179

Substituting L = W + 179 into equation 1, it becomes

W + 179 + W = 431

2W + 179 = 431

2W = 431 - 179

2W = 252

W = 252/2

W = 126

L = W + 179 = 126 + 179

L = 305

6 0
3 years ago
Need the answer, i want to make sure its right.
RUDIKE [14]
I think the width is 13 and the length is 12
6 0
3 years ago
Read 2 more answers
Find the area of the shape.
vesna_86 [32]

Answer:

what was the answer?? I am also needing to know!

8 0
2 years ago
Wilson frees home security system he has an 11% commission on every system he sells wislson sale for this month totaled $4264.00
Finger [1]

Wilson's commission is $469.04

Step-by-step explanation:

Given,

Commission = 11%

Total sales worth = $4264.00

Amount of commission = 11% of total sales worth

Amount\ of\ commission=\frac{11}{100}*4264\\\\Amount\ of\ commission=\frac{46904}{100}\\\\Amount\ of\ commission=\$469.04

Wilson's commission is $469.04

Keywords: commission, division

Learn more about division at:

  • brainly.com/question/6105786
  • brainly.com/question/6270221

#LearnwithBrainly

6 0
3 years ago
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