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Gnesinka [82]
3 years ago
15

What error did Mr. Sanders likely make, and what is the actual fraction of students who have

Mathematics
1 answer:
kiruha [24]3 years ago
4 0

Answer: (1st box) = 6 (2nd box) = 2 (3rd box) = 2/3

Step-by-step explanation:

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(3x^2 + 8x - 4 ) -(-x^2 +5x +2) simplify​
xxMikexx [17]

Answer:

4x^2+3x-6

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Explain how using basic facts can help you find 10×20×30×40 mentally?
Katena32 [7]
So all you have to do is take the first numbers of each multiple and multiply them. 
1 x 2 x 3 x 4 = 24 
Now you just add the 4 zeros to your answer. 
240,000 

Our answer even checks! 
10 x 20 x 30 x 40 = 240,000 

Good Luck! :)
3 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
Pls help I’m rlly confused. The question says “find the value of x using complementary angels” ty &lt;3
Arturiano [62]

Answer:

x=83. please look below for explanation. if anything isn't clear, please ask

Step-by-step explanation:

so complementary means adding up to 90 degrees in math. in this particular equation, you have to make sure that both (x-18) and 25 add up to 90.

if that other side is 25 degrees, the other side must be 65 because 90-25=65.

so now you have to set those equal to each other like this:

65 = (x-18)    now just solve for x

add the 18 to the other side. the -18 and +18 cancel.

x=83

so to test and to see if that is right, we can do

83-18 = 65

does 65+25 equal 90? yes

therefore, x=83

8 0
2 years ago
I’ve been stuck on this question for awhile and i can’t answer it
vfiekz [6]

Answer:

PEMDAS.

parenthesis first, then exponents, next would be mutiplication/division, then lastple add/subtract.

Step-by-step explanation:

first would be 15-7, then the 3^2, etc

8 0
2 years ago
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