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3 years ago

What does squares mean

Mathematics

1 answer:

lisabon 2012 [21]3 years ago

6 0

To square a number means to multiply the number by itself.

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The Pentagon in Washington DC is immense in size, with each outside wall 921 feet in length. What is the perimeter of the Pentag

OlgaM077 [116]

921×5= B. 4,605

Hope this helps!!!

4 0

2 years ago

Abigail withdrew $15 from checking account. Write an integer to represent the situation.

aleksandrvk [35]

Answer:

-5

Step-by-step explanation:

Withdrawing means subtracting

8 0

2 years ago

What is the solution set of the equation using the quadratic formula?

oee [108]

(1)

we are given

$x^2+6x+10=0$

we can use quadratic formula

$\mathrm{For\:a\:quadratic\:equation\:of\:the\:form\:}ax^2+bx+c=0\mathrm{\:the\:solutions\:are\:}$

$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

now, we can compare and find a , b and c

we get

$a=1,b=6,c=10$

now, we can plug these values into quadratic formula

$x=\frac{-6\pm \sqrt{6^2-4(1)(10)}}{2(1)}$

$x=\frac{-6+\sqrt{6^2-4\cdot \:1\cdot \:10}}{2\cdot \:1}$

we can simplify it

$x=-3+i$

$x=\frac{-6-\sqrt{6^2-4\cdot \:1\cdot \:10}}{2\cdot \:1}$

$x=-3-i$

so, we will get solution

{−3+i, −3−i}.........Answer

(2)

we are given equation as

$x^2-8x+14=0$

Since, Jamal solve this equation by completing square

so, firstly we will move constant term on right side

so, subtract both sides by 14

$x^2-8x+14-14=0-14$

$x^2-8x=-14$

we can write

$-8x=-2\times 4\times x$

so, we will add both sides by 4^2

$x^2-8x+4^2=-14+4^2$

we get

$x^2-8x+16=-14+16$ ..............Answer

4 0

2 years ago

The triangles shown below must be congruent.

Schach [20]

The answer is true :))))

4 0

2 years ago

Please HELP!!! I'll mark Brainiest!!

storchak [24]

Equation of a line that passses through (x1,y1) and has a slope of m is
y-y1=m(x-x1)

perpendicular lines have slopes that mulitply to get -1
given
y-2=7/3(x+5)
slope is 7/3

perpendicular
7/3 times slope=-1
times 3/7 both sides
slope=-3/7

given point is (-5,2)

y-2=-3/7(x-(-5))
y-2=-3/7(x+5)

C is answer

3 0

3 years ago