I need help!! Please

Mathematics

1 answer:

dimaraw [331]3 years ago

8 0

Answer:

i dont know , sorry:(

Step-by-step explanation:

i'll ask my mum and then ill edit the answer

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Hey! Can someone check my answers?

Andrew [12]

The greatest common factor is the biggest number taken from the values.

Q1. The answer is A. 5y^6

$20 y^{9} +5 y^{6}= 4*5 y^{9}+5 y^{6}$
Since $x^{a}* x^{b} =x^{a+b}$ , then $x^{9}= x^{3}* x^{6}$

Back to our expression:
$4*5 y^{9}+5 y^{6}=4*5 y^{3}*y^{6}+5 y^{6}=4 y^{3}*5y ^{6}+ 5y ^{6}*1=5 y^{6} (4y ^{3} +1)$
The greatest common factor is thus $5 y^{6}$

Q2. The answer is D. 12xy^2

$12x y^{5}+60 x^{4} y^{2} -24 x^{3} y^{3}=12x y^{5}+5*12 x^{4} y^{2} -2*12 x^{3} y^{3}$
We will use the rule $x^{a}* x^{b} =x^{a+b}$ to factorise the exponents:
$12x y^{5}+5*12 x^{4} y^{2} -2*12 x^{3} y^{3}= \\ =12x*y^{2}*y^{3}+5*12*x* x^{3} *y^{2}-2*12x* x^{2} *y*y^{2}= \\ =12xy^{2}*y^{3}+12xy^{2}*5 x^{3} -12xy^{2}*2 x^{2} y= \\ =12xy^{2}(y^{3}+5 x^{3}-2 x^{2} y)$
The greatest common factor is thus $12xy^{2}$

3 0

4 years ago

Please h e l p answer this??

aleksandrvk [35]

A, 4(750c - 700t). Hope this helps.

6 0

3 years ago

How to evaluate the integral

Papessa [141]

Remember
for F(x) is the antiderivitive of f(x)
$\int\limits^a_b {f(x)} \, dx =F(a)-F(b)$
so find the antiderivitive of ((x+1)^2)/x

if we expand we get (x^2+2x+1)/x which simplifies to x+2+(1/x)
the anti-deritivive of x is (1/2)x^2
the antideritiveve of 2 is 2x
the antideritivieve of 1/x is ln|x|

F(x)=(1/2)x^2+2x+ln|x|+C

$\int\limits^2_1 { \frac{(x+1)^2}{x} } \, dx =F(2)-F(1)$

F(1)=(5/2)+ln1+C
F(2)=6+ln2+C

F(2)-F(1)=6+ln2+C-(5/2+ln1+C)
F(2)-F(1)=(7/2)+ln2
that is the answer
if you want is simplified or expanded it is about 4.1915

8 0

3 years ago

PLEASE HELPPP!!! Given f(x) = 5x + 3, find f(-2) A. -7 B. -10 C. 13 D. -1

Deffense [45]

Answer:

A. -7

Step-by-step explanation:

Okay so all this is doing is plugging in -2 in the place of x. 5(-2) + 3 = -7 Hope this helps.

3 0

4 years ago

Read 2 more answers

Solve the simultaneous equations: x + 5y = 39 4x + 3y = 20