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lisabon 2012 [21]
3 years ago
7

Marco missed 4 questions on the test but answered 75% of the questions correctly.How many questions were on the test?

Mathematics
1 answer:
Nutka1998 [239]3 years ago
4 0

Answer:10

Step-by-step explanation:

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cora says she doesn't need to know the y-intercept of a line to write its equation, just its slope and some other point on the l
Nadusha1986 [10]

Answer:

The equation of line with given slope that include given points is                 3 y + x - 20 = 0

Step-by-step explanation:

According to Cora , if we know the slope and points on a line then we can write the equation of a line .

Since , The equation of line in slope-intercept form is

y = m x + c

<u>Where m is the slope of line , and if we know the points ( x , y ) which satisfy the line then constant term c can be get and the equation of line can be formed .</u>

So , From the statement said above it is clear that she is correct .

Now , Again

Given as :

Slope of a line is m = - \frac{1}{3}

That include points ( 2 , 6 )

Now from the equation of line as  y = m x + c

∴   6 =  - \frac{1}{3} ( 2 ) + c

Or, 6 =  - \frac{2}{3}  + c

So , c = 6 + \frac{2}{3}

or,  c = \frac{18 + 2}{3}

∴   c = \frac{20}{3}

So, The equation of line can be written as

 y =   - \frac{1}{3} x + \frac{20}{3}

Or, 3 y = - x + 20

I.e  3 y + x - 20 = 0

Hence The equation of line with given slope that include given points is     3 y + x - 20 = 0   Answer

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3 years ago
Let f(x)=x-2 and g(x)=x2-7x-9 find f(g(-1))
ira [324]
....................

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3 years ago
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Find the slope of the line that passes through the points (0, -3) and (-4,1).
kozerog [31]

The formula for slope is \frac{y_{2} -y_{1} }{x_{2} -x_{1} }

In this case:

y_{2} = 1\\ y_{1} }= -3\\x_{2} = -4\\x_{1} = 0

so...

\frac{1 - (-3)}{-4 - 0}

\frac{4}{-4}

-1 <<<The slope

Hope this helped!

~Just a girl in love with Shawn Mendes

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2 years ago
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A line graph titled Text messages sent has time of day on the x-axis and number of text on the y-axis. Girls sent 10 in the morn
slavikrds [6]

Answer:

Boys sent more text messages than girls during the

✔ night

.

In the morning, girls sent about

✔ 5

more text messages than boys.

Both boys and girls sent the most text messages in the

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During the afternoon, the students sent a total of approximately

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Step-by-step explanation:

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Shelly wanted to buy a shirt for $25 and a skirt for $20.When she got to the check out stand, they added 8% tax to her total. Ab
Verizon [17]

Answer:

$3.60

Step-by-step explanation:

25+20=45 (because you need the tax of both)

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