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3 years ago

11

the lenght of a rectangle is x+5 and it,s breath is x-5the areas of a rectangle is is x raise to the power of 2-x-15 is it true

or false?

1 answer:

sukhopar [10]3 years ago

4 0

Answer:

False

Step-by-step explanation:

the area (A) of a rectangle is calculated as

A = length × breadth

= (x + 5)(x - 5) ← expand factors using FOIL

= x² - 5x + 5x - 25

= x² - 25 ≠ x² - x - 15

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Perimeter and area of a rectangle 11 cm by 19.3cm

Dovator [93]

Answer:

Perimeter: 60.6cm

Area: 212.3cm

Step-by-step explanation:

When calulating the perimeter, you are adding the length of all the sides together. Since the figure is a rectangle, two two pairs of sides will be different lengths. Solving is as follows:

P= 11+11+19.3+19.3 or P=11(2)+19.3(2) =60.6

With area, you need the total amount of mass, so you would multiply two sides. In this case, the two are 11cm and 19.3cm.

A= 11(19.3)cm =212.3

6 0

4 years ago

PLEASE HELP DUE TOMORROW

kow [346]

190-15=x
I believe?
I THINK THIS IS THE ANSWER

3 0

3 years ago

Will you help me asap? I think the answer is 9 am I correct or no?

ella [17]

it's 9 and 15. They are both 3 away from 12

4 0

4 years ago

Read 2 more answers

At Black Horse Junior School there were altogether 394 teachers and children. The teachers and the boys numbered 189, and the gi

Simora [160]

X - teachers
y - boys
z - girls

$x+y+z=394\\ x+y=189\\ x+z=217\\\\ x+y+z=394\\ 
y=189-x\\
z=217-x\\\\
x+189-x+217-x=394\\
-x=-12\\
x=12\\\\
y=189-12\\
y=177\\\\
z=217-12\\
z=205$

5 0

3 years ago

Find the value of each variables

BigorU [14]

Answer:

<em>X=11</em>

<em>y=22</em>

Step-by-step explanation:

$tan60\frac{11\sqrt{3} }{x} \\\\\sqrt{3} =\frac{11\sqrt{3} }{x} \\\\x=\frac{11\sqrt{3} }{\sqrt{3} }$

⇒x=11

$Sib 60=\frac{11\sqrt{3} }{y} \\\\\frac{\sqrt{3} }{2} =\frac{11\sqrt{3} }{y} \\\\y=\frac{11\sqrt{3} }{\sqrt{\frac{3}{2} } }$

⇒ y=22

<u>hope it helps....</u>

8 0

3 years ago