This is relay hard i need help 19 point available

Answers

Answer 1

Answer: order of operations
PEMDAS
parenthaseees
exponents
multiplication or division whichever comes first
addition or subtraction whichever comes first

parenthases first
inner to outer
left to right
treat a/b as (a)/(b) so simplify the fraction top and bottom as much as possible
the parenthaseese we have to simplify are
(20-5^2), (16+2^2), (3*2^2)

(20-5^2)
exponents first
5^2=25
now we have
(20-25)
subtract
20-25=-5
other parenthasees

16+2^2
exponent,
2^2=4
16+4=20

next
3*2^2
exponent
2^2=4
3*4=12

so the equaiton we have now is
$((-5)(20))/(-2^(3)+(12))$

exponents
-2^3 =-1 times 2^3
exponent first
2^3=8
-1 times 8=-8

now we hav
$((-5)(20))/(-8+(12))$
treat the numberator and denomenator as if they are in parenthasees so try to simplify them next
(-5)(20)=-100
-8+12=4

now we have
$(-100)/(4)$
division
-100/4=-25

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Quick Help, Long Division
3x+2 ÷9x^2-9x-10

Answers

Hello,
Answer (3x+2)(3x+5)

One endpoint of a line segment is at (6, 5). The line is bisected by placing the midpoint of the line segment at (1, 2). What are the coordinates of the other endpoint?

Answers

coordinates of the other end point should be 5,-6 Its the only possible one

Consider the following set of equations: Equation C: y = 2x + 8
Equation D: y = 2x + 2

Which of the following best describes the solution to the given set of equations?

No solution
One solution
Two solutions
Infinite solutions

Answers

No solution because both equations have 2x on the same side.

Answer:

No Solution

Step-by-step explanation:

No Solution because they both have the same slopes but different y- intercept.

Hope this helped!

Amy purchased 17 pencils and 18 pens for a fund-raiser at school and spent $61.50. Jocelyn purchased 10 pencils and 21 pens and spent $57. How much does each pencil cost?

Answers

Let,
pencils be "x"
pens be "y"

According to the question,
17x + 18y = 61.50 ----------> equation (1)
10x + 21y = 57 -----------------> equation (2)

Now,
Taking equation (1),
17x + 18y = 61.50
18y = 61.50 - 17x
y = (61.50 - 17x ) / 18 -----> equation (3)

Now, substituting the value of "y" in equation (2), we get,

$10x+21( (61.50-17x)/(18) )=57$

$10x+7( (61.50-17x)/(6) )=57$

$10x+ (430.50-119x)/(6)=57$

$10x* (6)/(6) + (430.50-119x)/(6)=57$

$(60x)/(6) + (430.50-119x)/(6)=57$

$(430.50+60x-119x)/(6)=57$

$430.50-59x=57*6$

$430.50-59x=342$

$59x=430.50-342$

$x=(88.5)/(59)$

$x=1.5$

Now,
Substituting the value of "x" in equation (3), we get,

$y =(61.50-17x)/(18)$

$y =(61.50-17(1.5))/(18)$

$y =(61.50-22.5)/(18)$

$y =(39)/(18)$

$y =2.17$

$y =2$ approx. (rounded)

So, Each pencil costs $1.5 and each pen costs $2.

Answer:

Each pencil costs $1.50 and each pen costs $2.00

Step-by-step explanation:

Which is greater 419.10 or 419.099