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2 years ago

Plz help with this question ill mark u brainlist

Mathematics

1 answer:

IceJOKER [234]2 years ago

7 0

You should find the area under the curve. Which will give you multiple shapes. That are 3 triangles and one rectangle. Then use the Rule of the area of the triangle which is 1/2 × base × height then lastly. When you find the area for each shape you then find the sum of all the distance to give you the full area under the curve.

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You have in the class 11 boys and 8 girls. You also have 3 seniors, 4 juniors, and 12 sophomores. If you select a student at ran

Daniel [21]

Answer:

Step-by-step explanation:

5 0

2 years ago

How do i calculate? All the way to s_75. It’s so long

mina [271]

Answer:

-675

Step-by-step explanation:

The sum can be broken into parts that you know. Here, one of those parts is the sum of numbers 1 to n. That sum is given by n(n+1)/2.

$\displaystyle S_{75}=\sum\limits_{n=1}^{75}{(67-2n)}=\sum\limits_{n=1}^{75}{67}-2\sum\limits_{n=1}^{75}{n}\\\\=75\cdot 67-2\dfrac{75(75+1)}{2}=75(67-76)\\\\=\bf{-675}$

Another way to do this is to realize the sequence of numbers is an arithmetic sequence with a first term of 65 and a last term of 67-2·75 = -83.

The sum of an arithmetic sequence is found by multiplying the number of terms by their average value. Their average value is the average of the first and last terms.

The average value of those 75 terms is (65 +(-83))/2 = -9, so their sum is ...

75(-9) = -675

7 0

3 years ago

Simplity find the quotient and the remainder of (2x2+9x+8)÷(x+2)

Nuetrik [128]

That’s what I got I didn’t know how to type it so I just took a photo

8 0

2 years ago

Solve the systems of equations by substitution. 2x+y=-2 3x-y=7

lukranit [14]

Answer:

To solve the system of equations by substitution:

2x+y=-2

3x-y=7

first solve for y:

2x+y=-2

y=-2x-2

Then plug ^^ equation for y in the other equation

3x-(-2x-2)=7

5x+2=7

5x=5

x=1

Then solve for y:

2(1)+y=-2

y=-4

Final answer is x = 1 and y = -4

Hope it helps!

5 0

1 year ago

What is ___x5=20 3x _____=6 2+ ____=16 3x____=24 9x____=34 12+____=2

nydimaria [60]

Answer:

4×5=20

3×2=6

2+14=16

3×8=24

9×4=36, 36 -2 = 34

12+(-10) =2

4 0

2 years ago