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andrew-mc [135]
3 years ago
11

There are 60 students going on a field trip to the chocolate factory. The students are from three different classes.

Mathematics
1 answer:
Bess [88]3 years ago
5 0

Answer:

24+18+A=60.

Step-by-step explanation:

A=18

Can you mark me brainliest? Plzzz?

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Sophia determined that the expression Negative (4 x minus 5) + 2 (x minus 3) is equivalent to –2x – 5 by using the steps below.
CaHeK987 [17]

Answer:Hope This Helps ☺️

Step-by-step explanation:

She is not correct because she did not substitute the same number in both expressions in Step 1

Step-by-step explanation:

CASE 1: substitute 1 for x to both sides of the equations

L.H.S

-(4x-5)+2(x-3)

-(4 (1) - 5)+ 2(1-3) = - (-1) + 2(-2) = 1 - 4 = -3

R.H.S

-2x - 5

-2(1) - 5 = -2-5 = -7

Hence for x= 1

-(4x-5)+2(x-3) ≠ -2x -5

Because -3 ≠ -7

CASE 2: substitute -1 for x to both sides of the equations

L.H.S

-(4x-5)+2(x-3)

-(4 (-1) - 5)+ 2(-1-3) = - (-9) + 2(-4) = 9 - 8 = 1

R.H.S

-2x - 5

-2(-1) - 5 = 2-5 = -3

Hence for x= -1

-(4x-5)+2(x-3) ≠ -2x -5

Because 1 ≠ -3

Answer:

She is not correct because she did not substitute the same number in both expressions in Step 1

3 0
3 years ago
Read 2 more answers
Quadrilateral with vertices at A(2,2), B(1,5) C(5,3), D(4,6)
MatroZZZ [7]
I have attached an image explaining how to solve this problem.
(“m” means slope)

6 0
2 years ago
What's the difference between two whole number 1/2 percent of 36 and 30% of 10<br>​
AlexFokin [52]

Here, we proceed step by step, to obtain our answer,

\frac{1}{2}  % of 36 can be written as ,

0.5 % of 36 , which means,

100 % refers to 36, then

0.5 % refers to what,  thus, by cross multiplication we get,

0.5 % of 36 =  \frac{0.5 X 36}{100} = 0.18 ___(1), which can be expressed in whole numbers as 0.

Now, 30 % of 10 means,

100 % refers to 10, then

30 % refers to what,  thus, by cross multiplication we get,

30 % of 10 = \frac{30 X 10}{100} = 3 __(2)

From equations (1)  and (2),

the whole numbers that we obtain are 0 and 3, respectively,

Thus the difference between these two whole numbers is,

= 3 - 0 = 3.

To know more about  percentage, visit,

brainly.com/question/26497520

#Percentage

5 0
1 year ago
Helppppppppppp me please
Scilla [17]

Answer:

18.85 rounded

Step-by-step explanation:

The length of an arc depends on the radius of a circle and the central angle Θ. We know that for the angle equal to 360 degrees (2π), the arc length is equal to circumference. Hence, as the proportion between angle and arc length is constant, we can say that:

L / Θ = C / 2π

As circumference C = 2πr,

L / Θ = 2πr / 2π

L / Θ = r

We find out the arc length formula when multiplying this equation by Θ:

L = r * Θ

Hence, the arc length is equal to radius multiplied by the central angle (in radians).

7 0
3 years ago
Consider z = 3StartRoot 3 EndRoot + 3i. What happens to the modulus and argument when z is raised to the 4th power?
exis [7]

Answer:

It's A

Step-by-step explanation:

Just took it and it matches

6 0
3 years ago
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