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professor190 [17]
3 years ago
11

Someone please help I will mark brainliest!!!!

Mathematics
1 answer:
Iteru [2.4K]3 years ago
6 0

Answer:

I think the answer are C, B, C, and A.

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PLEASE HELP QUICK!!
AVprozaik [17]

Answer:

28 miles in 1.4 hours in the city

Step-by-step explanation:

<u>On the highway:</u>

Time =t hours

Rate = 45 mph

Distance =45\cdot t miles

<u>In the city:</u>

Time =3-t hours

Rate = 20 mph

Distance =20\cdot (3-t) miles

The trip was 100 miles long, then

45t+20(3-t)=100\\ \\45t+60-20t=100\\ \\45t-20t=100-60\\ \\25t=40\\ \\t=1.6\ hours\\ \\3-t=3-1.6=1.4\ hours

Distance on the highway =45\cdot 1.6=72 miles

Distance in the city =20\cdot 1.4=28 miles

6 0
4 years ago
Match each linear equation to its slope and y-intercept.
Alex Ar [27]

Answer:

-x + 5y = 4

5y = x + 4

y = x/5 + 4/5

Slope: 1/5

Y-intercept: 4/5

5y - x = 15

5y = x + 15

y = x/5 + 3

Slope: 1/5

Y-intercept: 3

2y - 3x = 7

2y = 3x + 7

y = 3/2x + 7/2

Slope: 3/2

Y-intercept: 7/2

2y = 5x + 7

y = 5/2x + 7/2

Slope: 5/2

Y-intercept: 7/2

8 0
3 years ago
Angle A?? <br> Ch.7.1 trig
Tju [1.3M]

9514 1404 393

Answer:

  m∠A =86°

Step-by-step explanation:

The sum of angles in a triangle is 180°

  A + B + C = 180°

  A + 51° + 43° = 180°

  A = 86° . . . . . . . . . . . . . subtract 94° from both sides

6 0
3 years ago
What are the factors of -100 that will = zero?
Karolina [17]

Answer:0

Step-by-step explanation:

Because it is a 0

7 0
4 years ago
Find the sum.<br> 2.680<br> 34.200<br> +20.386
Talja [164]
Answer: 57.266

Align all the decimal point and do the operation required.


8 0
4 years ago
Read 2 more answers
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