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3 years ago

If 7 sandwich rolls cost $1.26, how much will 25 rolls cost?

Mathematics

1 answer:

zavuch27 [327]3 years ago

4 0

$4.5 since 1.26/7 is .14 and need 25 so it’s 4.5

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A line includes the points (-39,49) and (0,0). What is its equation in slope-intercept form?

malfutka [58]

Answer:

The equation in the slope-intercept form will be:

$y=-\frac{49}{39}x+0$

Step-by-step explanation:

Given the points

(-39,49)

(0,0)

Finding the slope between the points using the formula

$\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

$\left(x_1,\:y_1\right)=\left(-39,\:49\right),\:\left(x_2,\:y_2\right)=\left(0,\:0\right)$

$m=\frac{0-49}{0-\left(-39\right)}$

$m=-\frac{49}{39}$

We know that the point-slope of the line equation is

$y-y_1=m\left(x-x_1\right)$

substituting $m=-\frac{49}{39}$ and (-39,49) in the equation

$y-y_1=m\left(x-x_1\right)$

$y-49=\frac{-49}{39}\left(x-\left(-39\right)\right)$

Now writing the equation in slope-intercept form

$y=mx+b$

where m is the slope and b is the y-intercept

$y-49=\frac{-49}{39}\left(x-\left(-39\right)\right)$

$y-49=\frac{-49}{39}\left(x+39\right)$

$\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{-a}{b}=-\frac{a}{b}$

$y-49=-\frac{49}{39}\left(x+39\right)$

$\mathrm{Add\:}49\mathrm{\:to\:both\:sides}$

$y-49+49=-\frac{49}{39}\left(x+39\right)+49$

$y=-\frac{49}{39}x+0$ ∵ $y=mx+b$

Where

$m=-\frac{49}{39}$ and the y-intercept i.e. $b=0$

Therefore, the equation in the slope-intercept form will be:

$y=-\frac{49}{39}x+0$

5 0

3 years ago

Dave uses 500 milliliters of juice for a How many more punch recipe He mixes it with 2 liters of ' pears did she buy ginger ale

Yakvenalex [24]

1 liter: 1000 ml

so 2 liters: 2000 ml. s

so now the last step adding- 2000+500= 2500

so Dave made 2500 millimeters of punch

8 0

3 years ago

Shane is trying to find the 5th term of a sequence where f(1)=4 and f(n)=2*f(n-1)+1 for each whole number greater than one. He r

Helen [10]

Just try to explain that by solving this in order, you can get the answer. Look:
<span>f(2) = 9
f(3) = 19
f(4) = 39
f(5) = 79
</span>

7 0

3 years ago

Round to the nearest tenths and hundreds 265

slavikrds [6]

Answer:

To the nearest tenth, 270, to the nearest 100, 300.

Step-by-step explanation:

3 0

3 years ago

Help me please in this problem

Rufina [12.5K]

To find the x point of the vertex do -b/2a which in this case is 24/12 which is equal to 2, then to find the y value plug 2 into every x 6(2)^2 -24(2) + 30

24-48+30 which is equal to 6, so your vertex is at (2,6)

3 0

3 years ago