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goldenfox [79]
3 years ago
14

Which is an equation of the line with slope –3 and passes through (2, –1)

Mathematics
1 answer:
Savatey [412]3 years ago
7 0

using the formula:

y = mx +b

Using the given slope and coordinate points we get:

-1 = -3(2) + b

-1 = -6 + b

add 6 to each side

5 = b

y = -3x + 5

which is the same as:

3x + y = 5 ...answer choice a

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I don’t know how to do it
lara [203]

Multiply the speed of the train by how many hours it travels:


22.5 miles per hour x 2.5 hours = 56.25 mile.

The train is 60 miles from it's destination, so now you want to subtract the miles it will travel in 2.5 hours from the total distance:

60 miles - 56.25 miles = 3.75 miles away from its destination.


5 0
3 years ago
What is the measure of < A, In degrees?
amid [387]

Answer:

D.120

Step-by-step explanation:

The sides AB and AC are equal and thus the angles they form with BC should be equal . Since now angle ABC is 30 then application of sum of angles in a triangle as a constant(180 degrees) we can subtract 60 degrees from it which gives 120

4 0
3 years ago
Katie went shopping with her friends Erin. Katie bought 3 shirts and 2 pairs of pants for $80. Erin bought 3 shirts and 4 pairs
Vera_Pavlovna [14]

Answer:

Step-by-step explanation:

shirt = x, pants: y

Katie equation: 3x + 2y = 80, Erin equation: 3x + 4y = 116  

3x + 2y = 80

3x = 80 - 2y

x = 80/3 - 2y/3

3(80/3 - 2y/3) + 4y = 116

80 - 2y + 4y = 116

80 + 2y + 116

2y = 36

y = 18, pants cost $18

3x + 4(18) = 116

3x + 72 = 116

3x = 44

x = 14.66... (66 is repeating), shirts cost $14.66

check work:

Katie: 3(14.66) + 2(18) = 79.98 which is roughly 80.

6 0
3 years ago
Suppose a candy bar weighs 5.38 ounces. How much does a pack of 8 bars weigh?
Alla [95]

Answer:

Step-by-step explanation: you multiply 5.38 and 8 and you get the answer 43.04

6 0
2 years ago
Read 2 more answers
PLEASE HELP!!!!<br><br> Write x = -2 in the form ax + by + c = 0
lisov135 [29]

x+2=0

............

3 0
3 years ago
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