3 years ago

Help me with this plsss 40 pointsss

Mathematics

1 answer:

lara [203]3 years ago

7 0

Answer:

Step-by-step explanation:

x(3x+2)=16

3x²+2x-16=0

3x²+8x-6x-16=0

x(3x+8)-2(3x+8)=0

(3x+8)(x-2)=0

either 3x+8=0

x=-8/3(rejected as width can't be negative)

x-2=0

x=2

so width=2

length=3×2+2=6+2=8

You might be interested in

1. Which of the following describes the end behavior of the function ƒ(x) = x^4 + 3x^3 – 2x + 7?

snow_tiger [21]

Hello, when x tends to $\infty$ the term with the highest degree will lead the behaviour.

In other words.

$\displaystyle \lim_{x\rightarrow+\infty} {x^4+3x^3-2x+7}\\\\=\lim_{x\rightarrow+\infty} {x^4}\\\\=+\infty\\\\\\\displaystyle \lim_{x\rightarrow-\infty} {x^4+3x^3-2x+7}\\\\=\lim_{x\rightarrow-\infty} {x^4}\\\\=+\infty$

So, the answer B is correct.

Thank you.

6 0

3 years ago

Put the following equation of a line into slope-intercept form, simplifying all fractions. 4y-4x= -28

V125BC [204]

Answer:

Y= x-7

Step-by-step explanation:

5 0

2 years ago

Lionel created a picture to hang on his wall. The drawing is below. Each circle has a radius of 8cm. The circles touch each othe

Vikki [24]

Answer:

888888

Step-by-step explanation:

88888888888888888888

7 0

2 years ago

Read 2 more answers

Find the area.<br> A. 19 ft²<br> B. 30 ft²<br> C. 31 ft²<br> D. 84 ft²

JulijaS [17]

Answer: D. 84 ft^2

Step-by-step explanation: The area of a trapezoid is (a+b)/2 x h. A and B are the bases, and h is the height. Plug in the numbers.

(8+16)/2 x 7 = 84

Your answer would be 84 ft^2. D.

8 0

3 years ago

Pleas help me need answers

elixir [45]

Okay, So An Equation To Write Is:
T = Time
S = Money Saved
R = Money Made Per Dog
C = Cost
T = (C - S)/R

Solve:

T = (108 - 30)/8
Simplify

108-30 = 78

T = 78/8

78/8 = 9.75.

T = 9.75

Now, You Can't Walk 0.75 Of A Dog, So Round It.

T = 10

So, You Need To Walk At Least 10 Dogs.

8 0

3 years ago