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Ray Of Light [21]
3 years ago
13

Factorise 49x²-y² class 8​

Mathematics
2 answers:
kondor19780726 [428]3 years ago
8 0

Answer:

(7x-y)(7x+y)

Step-by-step explanation:

Charra [1.4K]3 years ago
6 0

Answer:

(7x-y)×(7x+y)

Step-by-step explanation:

49x²-y²

7²x²-y²

(7x²)-y²

(7x-y)×(7x+y)

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Write an equation of the line with the given slope, m, and y-intercept (0,b).<br><br> m = 8, b = 9
Advocard [28]

Answer:

Equation: Y=8x+9, y-intercept: (0,9)

Step-by-step explanation:

An equation is set up in the format of y = mx+b, so simply plug the appropriate numbers in for those variables.

5 0
3 years ago
Gabriel invested $77,000 in an account paying an interest rate of 3%
const2013 [10]

Answer:

Isabella earn 5604.54 more money than  Gabriel

Step-by-step explanation:

As we know

Compound interest (CI) = P (1 + \frac{r}{n})^{nt}

P is the principal amount

t is the time period

n is the number of time periods

r is the rate of interest

a)  CI for  Gabriel

= 77000 (1 + \frac{3}{100*12})^{12*6} = 92165.03 dollars

b) CI for Isabella

= 77000 (1 + \frac{4}{100*4})^{4*6} = 97769.57 dollars

Isabella earn 5604.54 more money than  Gabriel

7 0
3 years ago
A waiting room is 2/3 full when 36 people are seated. How many people are in the waiting room when it is 1/2 full?
Ahat [919]
When 36 people are seated the room is 2/3 full.
So for 1/3 , 18 people are needed
It will be 3/3 full if 54 people are present

So there can be 54 people in total

Now for the room to be 1/2 full , people will be 1/2 x 54 = 27 people
6 0
3 years ago
Help asap!!!!!!!!!!<br><br> Properties of exponents <br><br> Simplify
maksim [4K]

Answer:

C) 4a^{6}b

Step-by-step explanation:

\frac{(4b^{3} 3a^{4}b^{2})}{3a^{-2} b^{4}} Copy the original equation

\frac{12a^{6}b^{5}}{3b^{4} } Combine like terms

\frac{12a^{6}b}{3} Simplify the b, then divide by 3

4a^{6}b

If this answer is correct, please make me Brainliest!

4 0
3 years ago
F(x) = -1/3 x + 7 determine the input that would give an output value of 2/3
-BARSIC- [3]
Ur output value is f(x).....so to do this problem u need to sub in 2/3 for f(x) and solve for the input value which is x

f(x) = -1/3x + 7
2/3 = -1/3x + 7 ...multiply everything by 3
2 = -x + 21
2 - 21 = - x
- 19 = -x
19 = x <== ur output

7 0
3 years ago
Read 2 more answers
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