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4 years ago

6

Stacy rowed across the lake with her friend Rainey (in the same boat) at a rate of 4 mph. Rainey then rowed back at a rate of 3

mph. If the lake is 6 miles across, how long did it take them to complete their trip?

2 answers:

tankabanditka [31]4 years ago

7 0

According to my various methods it took them 12 hours to reach the end

Sholpan [36]4 years ago

6 0

4 miles per hour
6/4 = 1.5

3 miles per hour
6/3= 2

1.5+ 2 = 3.5 mps

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Another algebra question I need help with

zzz [600]

7x -7/2 y = -49
7/2 y = 7x + 49
y = 2x + 14
y - intercept = 14
x - intercept : 2x + 14 = 0 so x = -7

answer is C.
x - intercept : -7
y - intercept : 14

4 0

3 years ago

1) -7v + 4(2 - 5v) = -154

Bad White [126]

Answer:

v=6

Step-by-step explanation:

First let's simplify the equation so it will be easier to PEMDAS the equation later.

-7v+4(2-5v)=-154

-7v+8-20v=-154

-27v+8=-154

Now you must isolate the v variable. You do this by subtracting 8 first and then divide by -27.

-27v+8=-154

-27v=-162

v = 6

5 0

3 years ago

Tristan is building steps up to a deck that is 156 5 6 yards above the ground. The steps must all be the same height. If he want

ss7ja [257]

Answer:

The height of each step is 1957 yard

Step-by-step explanation:

we are given

Tristan is building steps up to a deck that is 15656 yards above the ground

so, total height =15656 yards

Number of steps =8

now, we can use formula

Height of each step = ( total height)/( number of steps)

now, we can plug these values

and we get

Height of each step is

$=\frac{15656}{8}yards$

$=1957yards$

8 0

3 years ago

Write in point-slope form (-4,-3) m=-1

zvonat [6]

Answer:

Point-slope form: y + 3= -1(x + 4)

Slope-intercept form: y = -1x - 7

y = m * x + b,

where:

m is the slope; and

b is the intercept of the y-axis.

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3 years ago

Someone pelase help me!!!!

Art [367]

Answer:

$\boxed{\bold{True}}$

$\boxed{\bold{True}}$

Step By Step Explanation:

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$\bold{\left(-\frac{2}{5}x\right)\left(-1\right)$

Simplify

$\bold{\frac{2}{5}x$

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$\bold{5\cdot \frac{2}{5}x$

Simplify

$\bold{2x$

Divide Both Sides By 2

$\bold{\frac{2x}{2}$

Simplify

$\bold{x$

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Subtract $\bold{\frac{3}{4} }$ From Both Sides

$\bold{-x+\frac{3}{4}-\frac{3}{4}$

Simplify

$\bold{-x$

Multiply Both Sides By -1 (Reverse The Inequality)

$\bold{\left(-x\right)\left(-1\right)>\frac{37\left(-1\right)}{4}}$

Simplify

$\bold{x>-\frac{37}{4}}$

8 0

3 years ago