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3 years ago

9

The area of rectangular Envelope is given by the trinomial x^2 +8x+7. The length of the envelope is x+7. What is the width of th

e envelope ?

1 answer:

stealth61 [152]3 years ago

7 0

X+1 is the width of the envelope. If you need work just say do in the comments please.

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Find the value for “x”; 2 – 7x = -19

Law Incorporation [45]

Step-by-step explanation:

<em>2</em><em>+</em><em>1</em><em>9</em><em>=</em><em>7x</em>

<em>2</em><em>1</em><em>=</em><em>7x</em>

<em>21</em><em>÷</em><em>7</em><em>=</em><em>7x</em><em>÷</em><em>7</em>

<em>3</em><em>=</em><em>x</em>

<em>.</em><em>.</em>

4 0

3 years ago

Please explain this to me.

Nutka1998 [239]

Answer:

The value of x is 12 units.

Step-by-step explanation:

<u>We know that:</u>

Formula: h² = a² + b²

<u>Let's solve using Pythagoras theorem.</u>

=> 13² = 5² + x²
=> 169 = 25 + x²
=> 169 - 25 = x²
=> 144 = x²
=> √x² = √144
=> x = √144
=> x = 12

Hence, the value of x is 12 units.

3 0

3 years ago

Maria earns $80 per day working at a gas station. Write an algebraic expression to represent the amount of money she will earn i

Simora [160]

Answer:

The algebraic expression is 80d

Step-by-step explanation:

Maria's earnings per day = $80

Number of days= d

Total earnings for d days:

80d

Where,

80 is earnings per day

d is number of days

The algebraic expression is 80d

Algebraic equation is

y= 80d

Where

y= total income earned in d days

The expression is different from am equation because of the equal to sign(=)

3 0

4 years ago

Need help !!!!!!!!!!!!!!!!!!!

Tems11 [23]

Rectangle. it’s a 2d 4 sided shape with 2 sets of parallel sides

4 0

2 years ago

Enter an inequality that represents the graph in the box.

ANTONII [103]

The inequality that represents the graph in the box is

$y>-3x+6$

Given :

The graph of the linear inequality

Lets pick two points from the graph to frame the linear equation

Slope intercept form of the equation is

$y=mx+b$

Where m is the slope and b is the y intercept

y intercept is (0,6) from the graph

so b=6

Now we find out slope m using formula

Pick two points (0,6) and (2,0)

$slope = \frac{y_2-y_1}{x_2-x_1} \\m=\frac{0-6}{2-0} =-3$

m=-3

So the equation is $y=-3x+6$

Now we check the inequality sign by testing any point on shaded area

lets pick (4,0)

lets plug in 4 for x and 0 for y

$y=-3x+6\\0=-3(4)+6\\\\0=-6\\0>-6$

The inequality for the given graph is

$y>-3x+6$

we cannot use >= sign because we have dotted lines

Learn more : brainly.com/question/17203372

5 0

3 years ago