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kondaur [170]
3 years ago
8

PLEASE HELP

Mathematics
1 answer:
zhuklara [117]3 years ago
7 0
Beck add like terms so you get
4x^2 -4x-15
lucy factor our negative so you left with -4x^2 +5x -10 +8x^2 -9x -5
simplify 4x^2 -4x -15
therefore both students answers simplify to 4x^2 -4x -15
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Write the equation of line that passes through (-1,3) and (-5,-3)
Black_prince [1.1K]

Answer:

y =  \frac{3}{2} x + 4 \frac{1}{2}

Step-by-step explanation:

y=mx+c

where m is the gradient and c is the y-intercept of the line

Let's find the gradient of the line first.

gradient =  \frac{y1 - y2}{x1 - x2}

Using the above formula,

gradient \: of \: line \\  =  \frac{3 - ( - 3)}{ - 1 - ( - 5)}  \\  =  \frac{3 + 3}{5 - 1}  \\  =  \frac{6}{4}  \\  =  \frac{3}{2}

Subst. the gradient into m:

y =  \frac{3}{2} x + c

Now, find the value of c by substituting a coordinate into the above equation.

when x=-1, y=3,

3 =  \frac{3}{2} ( - 1) + c \\ 3 =  -\frac{3}{2}  + c \\ c = 3 +  \frac{3}{2}  \\ c = 4 \frac{1}{2}

Therefore the equation of the line is

y =  \frac{3}{2} x +  4\frac{1}{2}

5 0
3 years ago
an adult male lion eats about 108 pounds of meat per week about how much meat does an adult male lion eat in one day
Hatshy [7]
To work this out all you need to do is 108 divide by 7.
The answer would be 15.43
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8 0
4 years ago
To the nearest hundredth, how many cm are in 47 in? (1 in = 2.54
Nuetrik [128]
Your answer would be 119.38. This is because 47 times 2.54 is equal to 119.38. Have a great day Love! Contact me if you need more help!
8 0
3 years ago
Which angle, θ, forms the point on the unit circle with the coordinates (sqrt2/2, sqrt2/2)?
Nataly_w [17]
If you look at a unit circle (or you have one memorized, which I would strongly suggest) (√2/2,√2/2) is located at the radian value \pi /4, which is 45 degrees
5 0
4 years ago
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2/3 of a number is 20 less than the original number. Find the original number
Advocard [28]

Answer:

60

Step-by-step explanation:

Let the original number be x.

According to the question we can write as (2/3)x+20x

On rearranging x−(2/3)x=20

Now taking the L.C.M od 1 and 3 is 3

(3x−2x)/3=20

x/3=20

Again by transposing x=60

So the original number is 60

5 0
3 years ago
Read 2 more answers
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