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3 years ago

Find the sum. (2a2 + ab + 2b) + (4a2 − 3ab + 9)

Mathematics

2 answers:

Tom [10]3 years ago

7 0

$(2a^2+ab+2b)+(4a^2-3ab+9)\\\\=2a^2+ab+2b+4a^2-3ab+9\\\\=(2a^2+4a^2)+(ab-3ab)+2b+9\\\\=\boxed{6a^2-2ab+2b+9}$

11Alexandr11 [23.1K]3 years ago

3 0

Answer:

The sum is $6a^2-2ab+2b+9$

Step-by-step explanation:

Given two expression

$(2a^2 + ab + 2b)$ and $(4a^2 − 3ab + 9)$

We have to find the sum of above two expression.

$(2a^2 + ab + 2b)+(4a^2 - 3ab + 9)$

Combining like terms we get

$(2a^2+4a^2)+(ab-3ab)+2b+9$

= $6a^2-2ab+2b+9$

The sum is $6a^2-2ab+2b+9$

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3 years ago

Camila sets up a passcode on her tablet, which allows only nine-digit codes. A spy sneaks a look at Camila's tablet and sees her

laila [671]

Answer:

$\frac{1}{10^9}$ probability the spy is able to unlock the tablet on his first try.

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A probability is the number of desired outcomes divided by the number of total outcomes.

Desired outcomes:

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Total outcomes:

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$T = 10^9$

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3 years ago

During the fall semester, Marvin, Latoya, and Abdulla each read three sevenths of the library books in the classroom. If Latoya

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Answer:

There are 45 library books in the classroom.

Step-by-step explanation:

The problem says that Marvin, Latoya and Abdulla each read 3/7 of the library books in the classroom. If Latoya read 3/7 of the books, we can form a proportion to determine the number of total library books in the classroom.

$\frac{3}{7} =\frac{15}{x}$

To solve for 'x', we can either cross-multiply and divide, or we can multiply the denominator by the same factor as the numerator to get a product of 15. In this case, the same factor would be 5, so 7 x 5 = 35. If we cross-multiply:

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4 years ago

The functions f(x) and g(x) are shown on the graph. f(x) = |x| What is g(x)?

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Answer

Answer is B i think or A

so whoever below me or infront of me picks is probably the right one but its probably gonna be B

"if we use,,y=2x,,,this is well defined, on a x-y coordinate plane, y rises twice as fast as x moves to right. . g(x) =2x or h(x) =2x,,,,,mean the same thing,,,except the axis is now g(x),,or h(x)." - online resource front page

Simply its y,x except g is y or wtvr but it has more meaning

Step-by-step explanation:

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3 years ago

Two objects in outer space drift apart at an average rate of 25 kilometers every year. if the objects continue to drift apart fr

arlik [135]

The distance between the two objects in 10 years will be 250 kilometers.

What is Distance?

Distance is the total movement of an object without any regard to direction. We can define distance as to how much ground an object has covered despite its starting or ending point.

We are given:

The rate at which two objects drift apart in 1 year = 25 km

To calculate the distance between the two objects in 10 years, we apply unitary method:

The distance, the two objects has drifted apart in 1 year is 25 km

So, the distance, the two objects has been drifted apart in 10 years, will be = $\frac{25}{1} * 1 = 250 Km$

Therefore, the distance between the two objects in 10 years will be 250 kilometers.

Learn more about distance

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1 year ago