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3 years ago

Subtract 7x^2+4x-9 from 5x^2+10x-5. Express the result as a trinomial in descending degree order.

Mathematics

2 answers:

KATRIN_1 [288]3 years ago

5 0

After subtracting your answer should be -2x^2+6x+4

victus00 [196]3 years ago

3 0

So it's saying to
(5x^2 + 10x - 5) - (7x^2 + 4x - 9)

Collect the like terms
and regroup

(5x^2 - 7x^2) + (10x - 4x) + ( -5 + 9)

Simplify

-2x^2 + 6x + 4

Hope this helps :)

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Dan invests £18790 into his bank account. He receives 4.9% per year simple interest. How much will Dan have after 3 years? Give

garri49 [273]

Answer:

£21552.

Step-by-step explanation:

Given information:

Principal amount = £18790

Rate of simple interest =4.9% = 0.049 per year

Time = 3 years

Formula for simple interest:

$I=P\times r\times t$

where, P is principal, r is rate of interest and t is time in years.

$I=18790\times 0.049\times 3$

$I=2762.13$

Total amount after 3 year is

$A=P+I$

$A=18790+2762.13$

$A=21552.13$

$A\approx 21552$

Therefore, Dan have £21552 after 3 years.

8 0

3 years ago

50 POINTS!!! A side of the triangle below has been extended to form an exterior angle of 148°. Find the value of x.

Bingel [31]

Answer: x= 58°
explanation: interior angles of all triangles add up to 180.

5 0

2 years ago

Count back by one with the number 953

krok68 [10]

If i read it right, it would just be 1 - 953. Depending on your grade (Around 3rd grade it would just be 952) Above that would be -952

6 0

3 years ago

Write an expression using the distributive property that can be used to find the quotient of 126 divided by 7

sleet_krkn [62]

(7×100)+(7×20)+(7×6)

6 0

3 years ago

Can someone pleaseeee hellpp??

monitta

Answer:

5.8

Step-by-step explanation:

To get the mean, add up all the numbers

9+4+8+3+5 = 29

Then divide by how many numbers there are (5)

29/5 =5.8

The mean is 5.8

4 0

3 years ago