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fredd [130]
3 years ago
8

Evaluate the following expression when a = 5 and b = 1. Then, plot the resulting value on the provided number line.

Mathematics
1 answer:
snow_lady [41]3 years ago
7 0

Answer:

12+[2-(4.22)]=7+8

12+[2-8.44]=7+8

12+[-6.44]=7+8

12+77.28=7+8

89.28=7+8

89.28=15

Step-by-step explanation:

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Yuto and Lian are at train stations 1,880 kilometers apart. Yuto boards a train heading east at an average speed of 220
Doss [256]

Answer:

1,000 km

Step-by-step explanation:

Assume that when two train pass each other, Lian has traveled x (km)

=> The time Lian has traveled when two trains pass each other is:

<em>Time = Distance/ Rate = x/ 250 (hour)</em>

As Lian and Yuto travelled from the two opposite train stations and the train stations are 1,880 km apart

=> When two train pass each other, Yuto has traveled 1,880 - x (km)

=> The time Yuto has traveled when two trains pass each other is:

<em>Time = Distance/ Rate = (1,880 - x)/220 (hour)</em>

As Lian and Yuto board at the same time, so that when two trains pass each other, the time both of them have traveled is equal

=> <em>x/ 250 = (1,880 - x)/220</em>

<em>=> 220x = 250 x (1,880 -x) </em>

<em>=> 220x = 470,000 - 250x</em>

<em>=> 470x = 470,000</em>

<em>=> x = 1,000</em>

<em />

<em>So that, </em>when two train pass each other, Lian has traveled x = 1,000 km

<em> </em>

6 0
3 years ago
Read 2 more answers
length is 2x centimeters. Write a simplified equation to solve for x in terms of AT, the area of the tile. If necessary, use rat
Lelu [443]

i dont know if this is correct

AT (X)= 6X^2 another part to this equation is: AT/6= X^2 and the answer is X= AT/6^1/2b.

8 0
3 years ago
Which of the following is equivalent to the complex number i^8?
Maru [420]

Answer:

I think the answer is -1

Step-by-step explanation:

the sequence goes i, -i, 1, -1

Right? >_>

4 0
3 years ago
Read 2 more answers
2(x2 + 5) − 3(x + 1) + 3
mestny [16]

Answer:

2x^2  -3x +10

Step-by-step explanation:

2(x^2 + 5) − 3(x + 1) + 3

Distribute

2x^2 +10 -3x -3 +3

Combine like terms

2x^2    -3x    +10 -3+3

2x^2  -3x +10

7 0
3 years ago
The shapes in this question are drawn on a centimetre grid.
xenn [34]

Answer:

A. 12 centimeters B. 4 centimeters C. 20 centimeters

Step-by-step explanation:

To find area you need to do the Height time the Length.

For A it is 3x4

For B it is 4x1

And for C it is 4x5

You get this equation by multiplying the amount of squares that the Height and Length measured!

Hope this helped!

:DD

8 0
3 years ago
Read 2 more answers
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