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11111nata11111 [884]
3 years ago
15

Add the like terms: -3ab+-10a+-8a

Mathematics
2 answers:
Stolb23 [73]3 years ago
7 0
-10a and -8a are like terms, but -3ab is not equivalent.  With the two a terms, we have:

-10a-8a

a(-10-8)

-18a

We then add in the other term (-3ab) for a final result of -3ab+-18a.  This can be factored alternatively as -3a(b+6).
Zinaida [17]3 years ago
3 0
Check below! :D Answer is -3ab-18a.

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The graph shows the scores of an exam. About what percent of students scored above 86%?
Gemiola [76]

Attach shows the scores of students in an exam

\begin{gathered} \text{(students scored above 86\%) = }\frac{\text{ number of students score above 86\%}}{\text{Total scored }}\text{ x }\frac{100}{1} \\ \text{(students scored above 86\%) = }\frac{\text{8+5.9+2.2+2}}{1.4+2.2+4.5+6.2+8.5+16.5+18+16.3+8+8+5.9+2.2+2}X\frac{100}{1} \\  \\ \text{(students scored above 86\%) = }\frac{18.1}{99.7}\text{ X }\frac{100}{1} \\ \text{(students scored above 86\%) = }18.15\text{ \%} \\ \text{(students scored above 86\%) = 18\%} \end{gathered}

Hence the correct answer = 18% Option A

8 0
1 year ago
Do the ratios <br> 2<br> 6<br> and <br> 7<br> 9<br> form a proportion?
chubhunter [2.5K]

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Step-by-step explanation:

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2 years ago
What is the value of this expression 4x^3y^2 when x=-1 and y=2​
babunello [35]
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6 0
3 years ago
I'm confused... The cost in dollars of an n-mile trip with Supreme Taxi Service is given by 1.5+1.75n. 1.5 plus 1.75 n The cost
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6 0
3 years ago
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A combo meal and a salad cost $12
lubasha [3.4K]

Answer:

The cost of a combo meal is $8 and a salad is $4.

Step-by-step explanation:

You have to form simultaneous equations with the given informations. Let combo meal be m and salad is s :

m + s = 12 -  -  - (1)

2m + s = 20 -  -  -  (2)

Next, you have to solve these equations :

(2) - (1)

2m + s - m - s = 20 - 12

m = 8

sub  \: \: m = 8  \: \: into \:  \: (1)

(1)⇒

8 + s = 12

s = 4

8 0
3 years ago
Read 2 more answers
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