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Anna35 [415]
2 years ago
6

Can you evaluate the expressions for the given value. (show steps if you can)

Mathematics
1 answer:
exis [7]2 years ago
6 0

Answer:

Q1. -45

Q2. -10

Q3. 31?

Step-by-step explanation:

Q1 -- you times -8 and 2 which comes out to -16. Since you have -16 + 1 inside of the parentheses you add 1 to -16 which comes out to -15. Then you take -15 times 3 and it comes out to -45.

Q2 -- the m gets replaced by the 5 so now its -2 times 5. Which comes out to -10. Then you take -10 times 2, which is -20. Now take -20 + 10 which gives us the answer of -10.

Q3 -- I'm not completely sure on this one but I think the equation would transfer to this 2*5 + 5*3 + 2*3. So 2*5 is 10, 5*3 is 15, and 2*3 is 6. Add them all together and you get 31.

I hope this was right and it helps you!

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Solve the following problem then write your answer before the number.
Triss [41]

Answer:

1) Rizza's average speed is 27 km/h.

2) The distance between Barretto and Pampanga is 294 km.

3) Aaron's journey was 3.5 hours long.

Step-by-step explanation:

1) Time taken to cove the distance = 20 minutes

60 minutes = 1 hour

So that, 20 minutes = \frac{20}{60} hours

                                 = \frac{1}{3} hours

Distance covered = 9 km

But,

speed = \frac{distance covered}{time taken}

Rizza's average speed = 9 ÷ \frac{1}{3}

                                       = 9 x 3

                                       = 27 km/h

Rizza's average speed is 27 km/h.

2) Time taken = 3.5 h

the car's average speed = 84 km/h

Distance between Barretto and Pampanga = average speed x time taken

                                           = 84 km/h x 3.5 h

                                           = 294 km

The distance between Baretto and Pampanga is 294 km.

3) The uniform speed implies that Aaron did not accelerate during his journey.

Distance covered = 210 km

uniform speed = 60 km/h

time taken = \frac{distance covered}{speed}

                   = \frac{210}{60}

                   = 3.5 hours

Aaron's journey was 3.5 hours long.

6 0
2 years ago
You can approximate e by substituting large values for ninto the expression
ratelena [41]

You can approximate e by substituting large values for (1 + 1/n)^n into the expression.

<h3>How to illustrate the expression?</h3>

It should be noted that an expression can simply be used to illustrate the information given in a data.

In this case, you can approximate e by substituting large values for (1 + 1/n)^n into the expression.

Learn more about expressions on:

brainly.com/question/723406

#SPJ1

8 0
1 year ago
Simplify the expression 3x+4y+2+6y+3. What is the coefficient of y? What is the constant?
inn [45]
Given 3x+4y+2+6y+3

Collecting the like terms 
3x+4y+6y+2+3
3x+10y+5

The coefficient of y is 10
The constant is 3

8 0
3 years ago
Each of two congruent sides of and isosceles triangle is 2n + 7 and their third side is 3n. Write two equivalent expressions for
Veronika [31]
P=2(2n+7)+3n

p=4n+14+3n

p=7n+14

p=7(n+2)
8 0
3 years ago
Read 2 more answers
Seema is travelling to Australia. She travels a distance of 4,500 km by plane to Dubai and then another 11,700 km to Melbourne.
steposvetlana [31]

Add the two trips together for total Km’s:

4500 + 11700 = 16,200 km.


divide total km by speed:


16,200 / 1,100 = 14.727272 hours

0.727272 x 60 minutes per hour = 43.636363 minutes, round up to 44 minutes


total time: 14 hours and 44 minutes


7 0
2 years ago
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