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umerlodhi (umerlodhi):
1. Evaluate x – 3y if x = –4 and y = –6.
(Points : 4)
14
–14
22
–22
Question 2.2. Evaluate if x = –14.6 and y = 2.5.
–x – |y|
(Points : 4)
–17.1
–12.1
12.1
17.1
Question 3.3. Provide the missing reason in the following proof.
Prove –(–y – x) – x = y
Statements Reasons
–(–y – x) – x = –[–y +(–x)] – x Definition of subtraction
–[–y +(–x)] – x = y + x – x Opposite of a sum property
y + x – x = y + x + (–x) Definition of subtraction
y + x + (–x) = y + [x + (–x)] Associative Property of Addition
y + [x + (–x)] = y + 0 Additive Inverse Property
y + 0 = y ________________________
(Points : 4)
Symmetric Property
Additive Inverse Property
Additive Identity Property
Opposite of a Sum Property
Question 4.4. Simplify.
15 – (–3) – 4
(Points : 4)
–16
–8
14
22
Question 5.5. Simplify.
–10 • 2 ÷ (–4) + 8 • 5
(Points : 4)
25
35
45
65
Question 6.6. Simplify.
(Points : 4)
81
9
–9
–81
Question 7.7. Simplify.
–9 – 5x + 3 – 2x
(Points : 4)
–12 – 3x
–12 – 7x
–6 – 3x
–6 – 7x
Question 8.8. Evaluate if x = 13 and y = –4.
3(2x – y)
(Points : 4)
–63
–15
82
90
Question 9.9. Evaluate if x = 2 and y = –4.
2x ÷ y
(Points : 4)
–8
–1
8
1
Question 10.10. Find the reciprocal.
10b.gif
(Points : 4)
umerlodhi (umerlodhi):
if a question isent there skip it please
umerlodhi (umerlodhi):
question 6. \[27 \div 1/3\]
OpenStudy (abdullah1995):
for question 1 replace the x values in the x and and same for y and solve it
OpenStudy (arabpride):
Please understand that OpenStudy is not a site for answers but for helping you study.... consider reading the CoC and TaC before posting a question ~Thank You :3
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OpenStudy (arabpride):
day the same thing x'DD ye' ok..
OpenStudy (abdullah1995):
i am sorry @umerlodhi but giving answers is not what this site is meant for ..
OpenStudy (arabpride):
lolz ik how to solve these easily.. but you seem to lack cooperation... Good Luck cx
OpenStudy (abdullah1995):
with that attitude no one is going to help you.
OpenStudy (anonymous):
what questions do you still need help with?
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OpenStudy (anonymous):
post one at a time and tag me, and I'll see if I can help you. :)
umerlodhi (umerlodhi):
all of them @grunge101
umerlodhi (umerlodhi):
@TheSmartOne
OpenStudy (anonymous):
ok so starting with the first one. I'm not going to just give you the answers, you're gonna work them out with me.
umerlodhi (umerlodhi):
i just wan't answer's pleeeeeeeeeeease
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OpenStudy (anonymous):
nope.
OpenStudy (anonymous):
so
1. x - 3y; x = -4 and y = -6
OpenStudy (anonymous):
substitute the x with -4 and the y with -6
OpenStudy (anonymous):
so -4 - 3y(-6)
put that in a calculator
TheSmartOne (thesmartone):
^^ It should be -4-3(-6)=-4+18=??
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umerlodhi (umerlodhi):
-7?
TheSmartOne (thesmartone):
No it should be 14...
TheSmartOne (thesmartone):
Plus -7 is not an answer choice..
umerlodhi (umerlodhi):
so 14 right
TheSmartOne (thesmartone):
yes...
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OpenStudy (anonymous):
i didnt solve it
umerlodhi (umerlodhi):
okay wb the rest
TheSmartOne (thesmartone):
2) What is 14.6-2.5=??
OpenStudy (anonymous):
i'm just telling you what to put in the calculator
umerlodhi (umerlodhi):
12.1
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TheSmartOne (thesmartone):
It should be 12.1
TheSmartOne (thesmartone):
Exactly...
umerlodhi (umerlodhi):
thank @TheSmartOne your the best can we keep going
TheSmartOne (thesmartone):
not sure about 3...
umerlodhi (umerlodhi):
what do you think it is grunge101
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OpenStudy (anonymous):
i have no idea
OpenStudy (anonymous):
just either copy and paste it and dearch google, but if you don't find anything just choose a random answer
umerlodhi (umerlodhi):
lets skip it
umerlodhi (umerlodhi):
keep going to 4 huh?
OpenStudy (anonymous):
4. put 15 - (-3) - 4 in a calculator
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TheSmartOne (thesmartone):
What is 15+3-4
umerlodhi (umerlodhi):
15
OpenStudy (anonymous):
yeah that's how you do it
TheSmartOne (thesmartone):
5)(-10x2)/-4+ (8x5)
umerlodhi (umerlodhi):
14
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TheSmartOne (thesmartone):
Correct...
OpenStudy (anonymous):
5.
20 / -4 + 40
TheSmartOne (thesmartone):
#5 should be 45..
TheSmartOne (thesmartone):
#6 has no question...
OpenStudy (anonymous):
dont just give the answers @TheSmartOne
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umerlodhi (umerlodhi):
question 6.
27÷1/3
TheSmartOne (thesmartone):
I know kind of realized after i gave it..
TheSmartOne (thesmartone):
What is 27x3=?
umerlodhi (umerlodhi):
81
TheSmartOne (thesmartone):
That will be your answer..
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umerlodhi (umerlodhi):
cool
OpenStudy (anonymous):
7. -9 -5x + 3 - 2x
OpenStudy (anonymous):
so -5x - 2x
umerlodhi (umerlodhi):
x = ?
OpenStudy (anonymous):
you're solving like terms
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umerlodhi (umerlodhi):
is it -7
OpenStudy (anonymous):
x doesn't have a value
umerlodhi (umerlodhi):
oh
OpenStudy (anonymous):
but it would be 17x
OpenStudy (anonymous):
then -9 +3
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OpenStudy (anonymous):
-6
umerlodhi (umerlodhi):
nrgative six
OpenStudy (anonymous):
the last answer :)
umerlodhi (umerlodhi):
'neg'
umerlodhi (umerlodhi):
D
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OpenStudy (anonymous):
8. 3 times (2 times 13 - -4)
OpenStudy (anonymous):
so solve the parentheses first
OpenStudy (anonymous):
2 x 13 = 26
OpenStudy (anonymous):
add 4 bc subtracting -4 is the same thing
OpenStudy (anonymous):
so the inside is 30 then multiply it by 3
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umerlodhi (umerlodhi):
can u give the answer for this one
umerlodhi (umerlodhi):
90
OpenStudy (anonymous):
yes 90. so D. do you understand so far?
umerlodhi (umerlodhi):
is 90 the answer
umerlodhi (umerlodhi):
yes i do
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OpenStudy (anonymous):
ok cool.
OpenStudy (anonymous):
so
9. 2 x 2 / -4
umerlodhi (umerlodhi):
Question 9.9. Evaluate if x = 2 and y = –4. 2x ÷ y (Points : 4) –8 –1 8 1
OpenStudy (anonymous):
4 / -4
OpenStudy (anonymous):
so -1
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umerlodhi (umerlodhi):
i was gonna say 0
OpenStudy (anonymous):
lol good thing im helping you
umerlodhi (umerlodhi):
i like that i understand what im doing thank you
umerlodhi (umerlodhi):
lol
OpenStudy (anonymous):
aw that's so good. no problem. equations are like the only math i like and am like an expert on
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