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kondor19780726 [428]
3 years ago
7

Simplify the expression 2a + 5b² - a - b - 3b²​

Mathematics
2 answers:
Margarita [4]3 years ago
8 0

Answer:

a-b+2b^2

Step-by-step explanation:

collect like terms

2a-a-b+5b^2-3b^2

a-b+2b^2

Vikki [24]3 years ago
6 0

Answer:

a+2b²-b (correct order is 2b²+a-b)

Step-by-step explanation:

combine like terms ( terms with the same variable and are to the same power) so thats 5b² and -3b² and 2a and -a. the -b doesnt have any like terms so leave that alone for now. combine like terms 5b²-3b² is 2b² and 2a-a is a. so you have 2b²+a and plug in the -b so you get 2b²+a-b.

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Triangle ABC has vertices at A(2, 2), B(4,7), and C(6,2). Classify the triangle according to the side lengths.
zmey [24]

Answer:

Isosceles triangle

Step-by-step explanation:

Length AB

√(4 - 2)² + (7 - 2)²

√2² + 5²

√4 + 25

√29

Length AC

6 - 2 = 4

Length BC

√(6 - 4)² + (2 - 7)²

√2² + (-5)²

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Length AB and BC is the same.

Length AC is the longest side.

Therefore, it is an isosceles triangle.

4 0
3 years ago
Sameera predicted that she would sell 38 blankets, but she actually sold 28 blankets. Which expression would find the percent er
antoniya [11.8K]

Solution: We are given:

Predicted Sales by Sameera =38

Actual Sales by Sameera =28

Now to find the Percent error, we have to use the below formula:

Percent-Error= \frac{|Predicted-value - Actual-value|}{Actual-value} \times 100 \%

                       =\frac{|38-28|}{28} \times 100 \%

                       =\frac{10}{28}\times 100 \%

                       =35.71 \%

Therefore, the percent error is 35.71 \%      

8 0
3 years ago
Read 2 more answers
Solve (3)/(?)=(6)/(8)
lbvjy [14]

Answer:

4

Step-by-step explanation:

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5 0
3 years ago
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Plss answer the question below
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So your parent hasn't joined you on the Brainly express to Achievement-ville. We'll get them on board. Parents are busy people, but you can be the boss and remind them. Remind them how Brainly boosts you with expert knowledge. Remind them that tons of students already get grade upgrades with Brainly Plus. Remind your parent of the power they have to raise you to your full potential. We think they would agree. You deserve every education advantage.

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lora16 [44]
I belive the answer is 1.
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3 0
3 years ago
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