MATHEMATICS HIGH SCHOOL

Consider the sequence: 8;18;30;44.
Write down the next two terms of the sequence

Answers

Answer 1
Answer: ............................................................60 and 78

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How many questions would I have to miss on a 25 question test to get 88% ?

Answers

let's start with the question, how many questions do you need to get 88%?

so were are looking for
?/25 = 88% and 88% is also 0.88 so we can multiply 25 by 0.88

we get 22


But this doesn't here. the question asks us how many mistakes do you need. you can just subtract 22 from 25

25-22= 3
you need 3 misses to get 88%

An object moves 100 m in 4 s and then remains at rest for an additional 1 s.What is the average speed of the object?

Answers

Answer:

20 m per second

Step-by-step explanation:

100 / 5 = 20

1) 5x-2y=4.         2) 3x-5y=13  x-2y=5
3x+y=9

Answers

\left\{\begin{array}{ccc}5x-2y=4\n3x+y=9&/\cdot2\end{array}\right\n+\left\{\begin{array}{ccc}5x-2y=4\n6x+2y=18\end{array}\right\n----------\n.\ \ \ \ \ 11x=22\ \ \ \ /:11\n.\ \ \ \ \ \ \ x=2\n\n3\cdot2+y=9\n6+y=9\ny=9-6\ny=3\n\nAnswer:x=2;\ y=3


\left\{\begin{array}{ccc}3x-5y=13\nx-2y=5\end{array}\right\n\left\{\begin{array}{ccc}3x-5y=13\nx=2y+5\end{array}\right\n\nsubstitute:\n\n3(2y+5)-5y=13\n6y+15-5y=13\ny=13-15\ny=-2\n\nx=2\cdot(-2)+5=-4+5=1\n\nAnswer:x=1;\ y=-2.

What is value of x?



Enter your answer in the box.

Answers

the answer for x is 9

step-by-step

find perimeter of the triangle
2x + x = -5 + 8 + 10 + 14
3x = 27
x = 27/3
x = 9

The volume of a greenhous is 150 feet long, 20 feet wide, 10 feet high at the sides, and the 15 feet high in the center what is the cubic feet?

Answers

long=150
wide=20
high=10
volume=l*w*h
=150*20*10=30000which will be divided by 15 to get the cubic feet.
The answer will be 2000.

Let n = 2.5. what is the value of 2n(6n-3)+4n?

Answers

n = 2.5, \ \n\n\ 2n(6n-3)+4n = 12n^2 - 6n +4n =12n^2-2n\n \n12n^2-2n=12 *(2.5)^2-2*2.5=12*6.25-5=75-5=70
2n(6n-3)+4n

substitute n=2.5

2*2.5(6*2.5-3)+4*2.5=5(15-3)+10=60+10=70
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