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lesya692 [45]
2 years ago
9

3

Mathematics
1 answer:
denis23 [38]2 years ago
8 0

Answer:

a. 49

b. 1

c. x^2+10x+25

Step-by-step explanation:

Symply substitute the values (5, -3, x+3) in the equation (x+2)^2

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Write a polynomial equation of degree 3 such that two of its roots are 2 and an imaginary number
natta225 [31]
(x-2)(x^2+1)=x^3+x-2x^2-2=x^3-2x^2+x-2
5 0
3 years ago
Three vertices of a rectangle are (–2, 1), (–2, –3), and (4, –3)
Tpy6a [65]
The answer is C
it's easier if you graph it
we know that the x of the unknown vertice is 4, because this is a rectangle and that vertices has to be on the same x line as the point below.
y of the unknown vertice has to be 1 because the vertice to the left needs to be on the same y line as the unknown vertice

6 0
2 years ago
A rectangular plot of land that contains 1500 square meters will be fenced and divided into two equal portions by an additional
photoshop1234 [79]
Let the length be x and the width be w

The perimeter will be:
2x+3w=1500

thus
3w=(1500-2x)
w=(1500-2x)/3
w=500-2/3x

The area will be:
A=x*w
A=x(500-2/3x)
A=500x-(2/3)x²

The above is a quadratic equation; thus finding the axis of symmetry we will evaluate for the value of x that will give us maximum area.

Axis of symmetry:
x=-b/(2a)
from our equation:
a=(-2/3) and b=500
thus
x=-500/[2(-2/3)]
x=375
the length will be 375 m

The width will be 250 m

4 0
3 years ago
3(1-2x)=1/4(6x+9) what does x equal? <br> A) x=1/10<br> B) x=7/10<br> C) x=-12/7<br> D)x=-1/5
harina [27]

Answer:

A

Step-by-step explanation:

3(1-2x)=1/4(6x+9)

3-6x=1 1/2x+2 1/4

-2 1/4          -2 1/4

3/4-6x=1 1/2x

    +6x  +6x

3/4=7 1/2x

/7 1/2   /7 1/2

1/10=x

7 0
3 years ago
Read 2 more answers
Estimate a 15% tip on a dinner bill of $61.31 by first rounding the bill amount to the nearest ten dollars.
Harlamova29_29 [7]

Answer:

The Tip amount is $ 9

Step-by-step explanation:

Given as :

The total dinner bill = $ 61.31

Rounding the bill to nearest ten dollars

The value of bill after rounding it to ten dollars = $ 60

Now The percentage of tips = 15% of dinner bill

So,  The amount given as tip =  15% × $ 60

Or, The amount given as tip = $ 9

Hence The Tip amount is $ 9    Answer

8 0
3 years ago
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