Is this correct?? show work pleasee

Mathematics

1 answer:

In-s [12.5K]3 years ago

6 0

There isn't a question or a file, is that a mistake?

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• Write the equation of the line that passes through the points (-7,0) and(-3,-9). Put your answer in fully reduced point-slope

coldgirl [10]

We want to calculate the line that passes through the points (-7,0) and (-3,-9). Recall that the equation of a line is

$y=mx+b$

where m is the slope and b is the y intercept. We can calculate first the slope and then find the value of b. To do so, recall that given points (a,b) and (c,d) the slope of the line that passes through them is given by the formula

$m=\frac{(d\text{ -b)}}{(c\text{ -a)}}=\frac{b\text{ -d}}{a\text{ -c}}$

so by taking a=-7, b=0, c=-3 and d=-9 we get

$m=\frac{0\text{ - (-9)}}{\text{ -7 -( -3)}}=\frac{9}{\text{ -4}}=\text{ -}\frac{9}{4}$

so our equation becomes

$y=\text{ -}\frac{9}{4}x+b$

so know we want this line to pass through the point (-7,0), so whenever x= -7 then y=0 so we have the equation

$0=\text{ -}\frac{9}{4}(\text{ -7)+b}$

or equivalently

$0=\frac{63}{4}+b$

so if we subtract 63/4 on both sides, we get

$b=\text{ -}\frac{63}{4}$

so our equation would be

$y=\text{ -}\frac{9}{4}x\text{ -}\frac{63}{4}$

3 0

1 year ago

you are working as an assistant to a chef. the chef has 8 cups of berries and will use 2/3 cup of berries for each dessert he ma

mamaluj [8]

Zero because assistants don't know anything and only the chef can cook

jk

ok so how many 2/3's are in 8?

easy way to compar is
make 8 into a fraction over 3
8/1 times 3/3=24/3

how many 2/3 are in 24/3
how many 2's are in 24
12

answer is 12 desserts

6 0

3 years ago

Read 2 more answers

A random sample of 10 chocolate energy bars of a certain brand has, on average, 230 calories per bar, with a standard deviation

Troyanec [42]

Answer:

The confidence interval for the true mean calorie content is

$215$