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Nitella [24]
3 years ago
12

Evaluate the expression b/2-3 if b=8.​

Mathematics
1 answer:
Black_prince [1.1K]3 years ago
8 0

Answer:

-8

Step-by-step explanation:

b/2-3

substitute 8 for b

8/2-3

then solve

8/2-3

8/-1

-8

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It took the high school hockey team 5h to travel to a tournament in Thunder Bay. They travelled by bus and plane a total distanc
mote1985 [20]
Entire distance = 1,320
Entire time = 5 hours

bus avg = 40 km/h
plane avg = 600 km/h

Working this by trial and error
1 hour bus 4 hour plane = 40 + 2,400 = 2,800 distance (too high)
2 hour bus 3 hour plane = 80 + 1,800 = 1,880 distance (too high)
3 hour bus 2 hour plane = 120 + 1,200 = 1,320 distance (Correct!!)

So, they traveled 3 hours by bus and 2 hours by plane
(yes, you had the right answer).

8 0
3 years ago
-x - 4 = 4x - 54 im to lazy to figure it out myself
BlackZzzverrR [31]

Step-by-step explanation:

  • <em>-x-4=</em><em>4</em><em>x</em><em>-</em><em>5</em><em>4</em>

Adding x on both sides, we get

  • <em>-x-4+</em><em>x=</em><em>4</em><em>x</em><em>-</em><em>5</em><em>4</em><em>+</em><em>x</em>
  • <em>-</em><em>4</em><em>=</em><em>5</em><em>x</em><em>-</em><em>5</em><em>4</em>

Adding 54 on both sides, we get

  • <em>-</em><em>4</em><em>+</em><em>5</em><em>4</em><em>=</em><em>5</em><em>x</em><em>-</em><em>5</em><em>4</em><em>+</em><em>5</em><em>4</em>
  • <em>5</em><em>0</em><em>=</em><em>5</em><em>x</em>

Dividing both sides by 5, we get

  • <em>5</em><em>0</em><em>/</em><em>5</em><em>=</em><em>5</em><em>x</em><em>/</em><em>5</em>
  • <em>1</em><em>0</em><em>=</em><em>x</em>

<em>Hence,</em><em> </em><em>the </em><em>value</em><em> of</em><em> x</em><em> </em><em>is</em><em> </em><em>1</em><em>0</em><em>.</em>

5 0
3 years ago
On Monday Mrs. Wise bought 3 lbs of apples at $4 per lb. On
White raven [17]

Answer:

I think its $28

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Help please! Someone who knows the answer.
Svetlanka [38]

Answer:

A = 140° B = 30° C = 10°

Step-by-step explanation:

3x + 135 = 180

3x = 45

x = 15°

2 X 15 = 30

1 X 15 - 5 = 10

3 0
3 years ago
If you got a 1.25% interest rate how long would you need to invest $6000 if you wanted to earn $105 in interest
gavmur [86]

Answer:

1.4 years

Step-by-step explanation:

Use the formula for simple Interest:

I = P * r * t

Where I is the interest gained (in your case $105),

P is the principal (in your case $6000),

r is the annual interest rate in decimal form (in your case 0.0125)

and t is the time (in years) you need to find.

Therefore, we 105 = 6000 * 0.0125 * t = 75 * t\\t = \frac{105}{75} = 1.4 yearssolve for "t" in the following equation:

3 0
3 years ago
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