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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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Ben bought 1/2 pound of cheese for 3 sandwiches. If he puts the same amount of cheese on each sandwich, how much cheese will eac
MA_775_DIABLO [31]
(1/2)/3=1/6

Each sandwich will have 1/6 of a pound of cheese.
6 0
3 years ago
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What is the slope of the line with the equation of y = −2/3 x that passes through the point (2, 1)?
VARVARA [1.3K]
Y = mx + c
is the formula of a linear line
m is the slope/gradient:
So just take it out from the equation, it’s -2/3
3 0
3 years ago
Form the intersection for the following sets.
xxTIMURxx [149]

Answer:

  • {20}

Step-by-step explanation:

<u>Given sets</u>

  • R = {10, 15, 20}
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<u>Intersection of sets</u>

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4 0
3 years ago
In London, the charge of a tour bus consists of a fixed rental price plus a per kilometre rate, that depends on the distance of
ella [17]

Using a linear function, we have that:

a) The fixed cost is of $10.

b) The equation is: C = 10 + 12d.

c) The cost of an 18 km trip is $226.

d) The distance traveled is of 20 km.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

For this problem, the slope is of m = 12. When d = 5, C(d) = 70, hence we find the fixed cost as follows:

C(d) = 12d + b

70 = 60 + b

b = 10.

Hence the equation is:

C(d) = 12d + 10.

For a trip of 18 km, d = 18, hence the cost is:

C(12) = 12 x 18 + 10 = $226.

When the cost is of $250, the distance is found as follows:

250 = 12d + 10

12d = 240

d = 240/12

d = 20 km.

More can be learned about linear functions at brainly.com/question/24808124

#SPJ1

6 0
1 year ago
Which equation could be used to find the height of the flagpole?
Andrew [12]
Given a fragpole which makes a right angle with the point of observation with the angle of elevation as 50°.

Let x be the height of the flagpole, then

\sin50^o= \frac{x}{5}

Therefore, the <span>equation that could be used to find the height of the flagpole is
</span><span>x/5 = sin 50</span>
6 0
3 years ago
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