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Irina-Kira [14]
3 years ago
14

Which expressions are equivalent after simplifying? Check all that apply. (3.1a – 2.7b) + (1.5a – 4.9b) (2.3a + 0.2b) – 8b (–3.5

b + a) – (4.1b – 3.6a) –0.4b + (8b + 4.6a) 4.6a – 7.6b
Mathematics
2 answers:
ozzi3 years ago
6 0

Answer:

1,2,3

Step-by-step explanation:

fomenos3 years ago
4 0

Answer:

1st one 3rd one and last kne

Step-by-step explanation:

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Subtract.
mafiozo [28]
D) 3x+6


x + 1 + 2x +5

That will = D
4 0
3 years ago
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What is Y=2x+5 y=3x-1 system by substitution
Bad White [126]

Answer:

x=6 , y=17

Step-by-step explanation

3x-1=2x+5

    +1   -2x

x=6

plug in 6 for x to solve y



3 0
2 years ago
The scatter plot shows the first-year income for 15 people, based on the number of years of school they each had after high scho
notsponge [240]

Answer:

C.

Step-by-step explanation:

the answer is C. because if you notice how on the scattered graph the numbers go from 0-9 and 0-90. on C. it says 0years which will have an income of 8,000 dollars. divide and multiply and then switch flip.

4 0
2 years ago
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Identify which of these quadrilateral's are parallelograms.
nlexa [21]

Answer:

B

E

F

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Step-by-step explanation:

5 0
3 years ago
Consider randomly selecting a student at a large university. Let A be the event that the selected student has a Visa card, let B
Tems11 [23]

Answer:

0.75

Step-by-step explanation:

Given,

P(A) = 0.6, P(B) = 0.4, P(C) = 0.2,

P(A ∩ B) = 0.3, P(A ∩ C) = 0.12, P(B ∩ C) = 0.1 and P(A ∩ B ∩ C) = 0.07,

Where,

A = event that the selected student has a Visa card,  

B = event that the selected student has a MasterCard,  

C = event that the selected student has an American Express card,

We know that,

P(A ∪ B ∪ C) = P(A) + P(B) + P(C) - P(A ∩ B) - P(A ∩ C) - P(B ∩ C) + P(A ∩ B ∩ C)

= 0.6 + 0.4 + 0.2 - 0.3 - 0.12 - 0.1 + 0.07

= 0.75

Hence, the probability that the selected student has at least one of the three types of cards is 0.75.

5 0
3 years ago
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