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borishaifa [10]
3 years ago
5

The sum of 8n^2-3n+10 and -3n^2 -6n-7 is​

Mathematics
1 answer:
Alex Ar [27]3 years ago
3 0

Answer:5n^2-9n-7

Step-by-step explanation:

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$925 at 2% interest for 2.4 years. Find the simple interest earned.
mixer [17]

Answer:

£43

Step-by-step explanation:

925×2/100

=£ 18.5

2.4 years =18.5×2.4

=£43

5 0
3 years ago
What is the slope of a line that goes through the points (-1,2) and (1, 4)?
oksian1 [2.3K]

Answer:

1

Step-by-step explanation:

We can use the slope formula

m = ( y2-y1)/(x2-x1)

    = ( 4-2)/(1 - -1)

    = (4-2)/(1+1)

      = 2/2

    = 1

4 0
2 years ago
How do I solve without s calculator?
baherus [9]
You could solve it ( without a graph) in 2 easy ways :

1 use the equation that you have written in pencil and solve for y

y=3=-x+4
y=-x +1

Or you could use the point slop form after you find the y intercept y=mx+b


-3=4(-1)+b
b= 1

So the answer would be y= -x +1


Hope this help of it does feel free to give the brainliest

5 0
3 years ago
A survey at your school found that 842 in 989 students have a cell phone. What percent of the student in school has a cell phone
Mumz [18]

Answer:

85.14% of the students have a cell phone.

8 0
3 years ago
Read 2 more answers
Could someone please help me asap? Thanks in advance! :)
Elden [556K]

Answer:

A

Step-by-step explanation:

the standard form of a quadratic equation is

ax² + bx + c = 0 : a ≠ 0

obtain (5 + x)(5 - x) = 7 in this form by expanding the factors

25 - x ² = 7 ( subtract 7 from both sides )

18 - x² = 0 ( multiply through by - 1 )

x² - 18 = 0 ← in standard form

with a = 1, b= 0 and c = - 18 → A


4 0
3 years ago
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