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tresset_1 [31]
3 years ago
7

Pls help with this, I'm confused

Mathematics
1 answer:
Viktor [21]3 years ago
3 0

Answer:

Step-by-step explanation:

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231 km 811 m + 485 km 829 m
Eva8 [605]
231+811+485+829=2356km



6 0
3 years ago
Read 2 more answers
write the slope intercept form of an equation of the line that passes through (4,3) that is perpendicular to the line Y=-3x-15
cricket20 [7]
If two lines are perpendicular, then their slopes have a product of -1 or you could say they are opposite signed reciprocals of each other.
The given equation has a slope of -3.  We know this because it is in slope-intercept form y = mx + b ...y = (slope)x + (y-intercept).

so taking the slope -3...the opposite signed reciprocal would be +\frac{1}{3}

Now we have a slope and a point... we can use them to find the b (y-intercept)
x = 4, y = 3, and m = \frac{1}{3}
3= \frac{1}{3} (4)+b
3= \frac{4}{3} +b
Using the common denominator fraction for 3, we subtract 4/3 from both sides
3= \frac{9}{3}
\frac{5}{3} =b
plug the values for m and b into the slope intercept form
y= \frac{1}{3} x+ \frac{5}{3}
7 0
3 years ago
N-1 increased by 110%
ElenaW [278]

Answer:

2.1n-2.1

Step-by-step explanation:

The increase is

1.10 (n-1)= 1.1n -1.1

Add this to the original amount

(n-1) + 1.1n - 1.1

2.1n-2.1

5 0
3 years ago
....Math I need help
Brilliant_brown [7]
M<FIB = 90 -  (4x+3)
m<FIB = 87 - 4x

---------------------
m<HFG = 90 - (5x + 4)
m<HFG = 86 - 5x

-------------------------------
<BCF = 180 - (<CBF + <CFB)
<CBF  = 10x + 3
<CFB =90 - <CFD
but <CFD = <HFG = 86 - 5x (vertical angles)

<CFB =90 -(86 - 5x) = 4 + 5x

<BCF = 180 - (10x + 3  + 4 + 5x)
<BCF = 180 - (15x + 7)
<BCF = = 173 - 15x

3 0
3 years ago
Some railroad rails weigh 155 pounds per yard how much would a 33 foot long rail weigh
Nikolay [14]
155x33=5,115

5,115 pounds for 33 foot long railroad.
3 0
3 years ago
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