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aev [14]
3 years ago
5

Pls help w this question !! Determine the value of 2r² + r + 1 when: r= -0.2

Mathematics
2 answers:
AleksAgata [21]3 years ago
8 0
Its 0.4 is the answer it’s 0.4
Elena-2011 [213]3 years ago
3 0

Answer:

0.4

Step-by-step explanation:

2 x (-0.2) + (-0.2) + 1

- 0.4 - 0.2 + 1

-0.6 + 1

= 0.4

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Answer:

she earned 36$ and the store earned 409.5

Step-by-step explana

8% of 450

91% of 450

7 0
3 years ago
(9^8/17^6)^4<br> This is something from study island
jeka94

I hate study island lol and are those supposed to be powers? Like 3 to the power of 8

8 0
3 years ago
Read 2 more answers
1/2 (b - 10) + 2b = 25
Serggg [28]

Answer:

the answer is 12

Step-by-step explanation:

Simplify both sides of the equation.

12(b−10)+2b=25

(12)(b)+(12)(−10)+2b=25(Distribute)

12b+−5+2b=25

(12b+2b)+(−5)=25 (Combine Like Terms)

52b+−5=25

52b−5=25

add 5 to both sides.

52b−5+5=25+5

52b=30

multiply both sides by 2/5.

(25)*(52b)=(25)*(30)

b=12

4 0
3 years ago
Read 2 more answers
Six less than three times a number is eighteen. What is the number?
Snezhnost [94]

Answer: 6-3x=18

Step-by-step explanation: You just have to read what the question says for example Six less than three times a number is 6-3x=18

7 0
3 years ago
A train is traveling at a constant speed and goes 17 kilometers in 8 minutes. How far will the train travel in 60 minutes.
allsm [11]

Answer:

Distance B = 1275 kilometers.

Step-by-step explanation:

Let the two distances and time be A and B respectively.

Given the following data;

Distance A = 17 kilometers.

Time A = 8 minutes.

Distance B =?

Time B = 60 minutes.

First of all, we would find the constant speed;

Speed = distance/time

Substituting into the equation, we have;

Speed = 17/8

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Now, to find the distance B;

Distance B = speed * time

Distance B = 2.125 * 60

<em>Distance B = 1275 km</em>

3 0
3 years ago
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