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mixer [17]
3 years ago
12

(x2 − 8x + 5) − (−3x2 + 5x − 9)

Mathematics
1 answer:
julia-pushkina [17]3 years ago
7 0
(X²-8X+5)-(-3X²+5X-9)
=X²-8X+5+3X²-5X+9
=4X²-13X+14
That's your answer lovely~
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GET 5 STARS, THANKS, AND BRAILIEST!!!
Scrat [10]

Answer:

its (7,6)

Step-by-step explanation:

2x + y = 20

2(7) + 6 = 20

14 + 6 = 20

20 = 20

6x - 5y = 12

6(7) - 5(6) = 12

42 - 30 = 12

12 = 12

5 0
3 years ago
A woman bought a dress at a discount of 16 2/3%. If the woman paid $32.50, what was the original price of the dress?
Ostrovityanka [42]

Answer:

$39

Step-by-step explanation:

Let original price be x, so we need to subtract 16 2/3 % from that to get 32.50

So we can write:

100x-16\frac{2}{3}x=3250\\83\frac{1}{3}x=3250\\x=39

So basically, the original price was $39.

3 0
3 years ago
if a 42.9ft tall flagpole casts a 253.1ft long shadow then how long is the shadow that a 6.2ft tall woman casts?
vovangra [49]
Set up a proportion.
flagpole/shadow = woman/her shadow.

f/s1 = w/s2
f = 42.9
s1 = 253 
w = 6.2 
s2 = ??? = x

42.9/253 = 6.2 / x
42.9 x = 253*6.2
42.9 x = 1568.6
x = 1568.6 / 42.9
x = 36.56 The womans shadow is 36.56 feet long <<<< ===== answer.
3 0
3 years ago
Find out for what value of the variable:
Burka [1]

Answer:

a=-1,\ a=-5

x=-2+i,\ -2-i

Step-by-step explanation:

<u>Equations</u>

We have two cases where some variable is required to be found such that some condition is met. The first case is about finding the value of a that complies:

a^2+7a+6=a+1

Rearranging

a^2+6a+5=0

Factoring:

(a+1)(a+5)=0

There are two solutions:

a=-1,\ a=-5

The second case requires us to find the value of x such that

3x^2-x+1 =2x^2+5x-4

Rearranging

x^2+4x+5=0

This second-degree equation has no real roots. We'll offer the imaginary (complex) solutions:

x=-2+i,\ -2-i

5 0
3 years ago
Evaluate (a + b)2 for a = 2 and b = 3.<br> 1.) 10<br> 2.)13<br> 3.)25
Fittoniya [83]
(a + b)2   Plug in the a and b values
(2 + 3)2   Add 2 and 3
(5)2         Multiply 5 and 2
10

When a = 2 and b = 3, (a + b)2 will equal 1.) 10.
6 0
3 years ago
Read 2 more answers
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