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Naddika [18.5K]
3 years ago
8

Donna is on her way home in her car. She has driven

Mathematics
1 answer:
kakasveta [241]3 years ago
5 0
50 miles is her total length of drive
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(a + 3)(a - 2) please help
gregori [183]
Final Answer: a2+a−6
3 0
3 years ago
1.solve the following equation for y 3x- 2y= 6
harkovskaia [24]
So,

For number one, there will be an infinite number of solutions, as there are two placeholders.
3x - 2y = 6
It seems we can use the intercept method.
3x - 2(0) = 6
3x = 6

Divide both sides by 3
x = 2

This is one solution: (2,0)

3(0) - 2y = 6
-2y = 6

Divide both sidees by -2
y = -3

This is another solution: (0,-3)
You should now be able to draw the line.
If you want intercept form for this equation, just manipulate the equation in order to get the y = mx + b form.

Subtract 3x from both sides
-2y = -3x + 6

Divide both sides by -2
y =  \frac{3}{2} x + 6


For the second problem, simply manipulate the equation.
\frac{1}{3} (6x - 9) =  \frac{3}{4} (4x - 8)

Distribute
2x - 3 = 3x - 6

Subtract 2x from both sides
-3 = x - 6

Add 6 to both sides
3 = x


For the third problem, do the same thing.
\frac{3(2x-1)}{4} = x +  \frac{7}{2}

We must first multiply both sides by 4.
3(2x-1) = 4x + 14

Distribute
6x - 3 = 4x + 14

Subtract 4x from both sides
2x - 3 = 14

Add 3 to both sides
2x = 17

Divide both sides by 2
x =  \frac{17}{2} \ or\ 8 \frac{1}{2}
5 0
3 years ago
Write an equation of the line that passes through (2 , 0) and is perpendicular to the line y=-1/7x-3
aleksley [76]

Answer:

y = 7x - 14

Step-by-step explanation:

If the given line has slope -1/7, then any perpendicular line has the slope which is the negative reciprocal of -1/7.  That is +7.

Apply the slope-intercept formula for the equation of a straight line, using 0 for y, 2 for x and searching for the y-intercept value b:

0 = 7(2) + b.  Then b = -14, and the desired equation is y = 7x - 14.

3 0
3 years ago
A restaurant sells burritos for $8.00 each. The cost of the meat is $1.50 and the cost of the other ingredients is $1.00 for eac
Zina [86]

Answer: $550

Step-by-step explanation:                                                                                                                            

How much is the profit for 1 burrito?: $8 - ($1.50+$1) = $5.5

So, profit for 100 burritos is $5.5 x 100 = $550.

Hope this helps.

4 0
3 years ago
Read 2 more answers
Mary runs 7 1/5 miles, jogs 5 1/4 miles andcwalks 8 2/3 miles. How far has she traveled?
MrRa [10]

Answer:

217/60 miles

Step-by-step explanation:

7 0
3 years ago
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