6(7x+12y) equals too?

Train a leaves new york at 9am eastern time on monday, headed for los angeles at a constant rate of 40 miles per hour. on the sa

nlexa [21]

We can assume that B leaves Los Angeles not at noon but at 2pm Eastern Time, so 5 hours later than A leaves New York.

In 5 hours A covers 5*40=200 miles. So, A and B together should cover 3,000-200=2,800 miles.

Combined rate = 40 + 60 = 100 miles per hour.

To cover 2,800 miles they'll need 2,800/100=28 hours.

2pm Eastern Time on Monday + 28 hours = 6pm Eastern Time on Tuesday.

Answer: 6:00pm on Tuesday

7 0

2 years ago

A football team loses 7 yards on each of 2 consecutive plays. Find the total change in yards from where the team started.

kupik [55]

Answer:

confusion

Step-by-step explanation:

7 0

2 years ago

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Please for the love of god anwser my question lay correctly I really need your help :( I will give 25 points :)! This is geometr

Zepler [3.9K]

Answer: x=8

for every 5 there is 2

so for x=8

there are four 5's in 20

I hope this is good enough:

3 0

2 years ago

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The sum of a number w and 3 is less than or equal to ten.

Zinaida [17]

<h2>Answer:</h2>

In this problem we must translate English words into Algebraic Expressions. So we have the following English words:

<em>The sum of a number w and 3 is less than or equal to ten</em>

<em />

So let's do that using two steps:

<h3>1. The sum of a number w and 3:</h3>

Here we have two numbers w and 3. So we must makes the sum these numbers, therefore:

$w+3$

<h3>2. The sum of a number w and 3 is less than or equal to ten:</h3>

The symbol for the English words less than or equal to is ≤ hence we can write these words as:

$\boxed{w+3\leq 10}$

As you can see, the algebraic expression is an inequality.

8 0

2 years ago

Please help!!! Need answers today!!

MariettaO [177]

1) Equation in Point Slope form is $y-20=-\frac{55}{4}(x+2)$

2) So, linear equation of line with slope of -1/2 and point (3,5) is $y=-\frac{1}{2}x-6\frac{1}{2}$

3) a) Slope = -1/2 and point is (4,3)

b) Slope intercept form is $y=-\frac{1}{2}x+7$

c) Standard form is: $\frac{1}{2}x+y=7$

d) x-intercept is (14,0) and y-intercept is (0,7)

Step-by-step explanation:

1) Write an equation in point slope form to model the table.

The standard form of point slope form is:

$y-y_{1} = m(x-x_{1})$

Finding Slope m:

Slope can be find using:

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

where $y_{2}=132,y_{1}=20,x_{2}=-10,x_{1}=-2$

Putting values:

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\m=\frac{132-20}{-10-(-2)}\\m=\frac{132-20}{-10+2}\\m=\frac{110}{-8}\\m=-\frac{55}{4}$

So, slope is -55/4 and considering x₁= -2 y₁=20

Putting values in point-slope form:

$y-y_{1} = m(x-x_{1})\\y-20=-\frac{55}{4}(x-(-2))\\y-20=-\frac{55}{4}(x+2)$

So, Equation in Point Slope form is $y-20=-\frac{55}{4}(x+2)$

2) Write a linear equation for the line having Slope = -1/2 and point (3,5)

We will use Point Slope form:

$y-y_{1} = m(x-x_{1})$

Putting values:

$y-5=-\frac{1}{2}(x-3)\\y-5=-\frac{1}{2}x-\frac{3}{2}\\y=-\frac{1}{2}x-\frac{3}{2}+5\\y=-\frac{1}{2}x-\frac{3+5*2}{2}\\y=-\frac{1}{2}x-\frac{13}{2}\\y=-\frac{1}{2}x-6\frac{1}{2}$