Ask question

Ask question

All categories

3 years ago

10

Help please!!!!!!!!!!!!

1 answer:

S_A_V [24]3 years ago

4 0

Step-by-step explanation:

(2(x+y)÷(x+y)(x-y) )×(x+y÷(x^2+2×x×2y+2y^2)

2÷x^2+2y^2

You might be interested in

100 POINTS HELP ASAP Linear Combination

notka56 [123]

Answer:

1) $x=\dfrac12$

2) $n = -3 \ \ \textsf{and} \ \ m = -4$

3) see below

4) A: 0 = 1

Step-by-step explanation:

<u>Question 1</u>

$15-0.5(4x-2)+4x=17$

$\implies 15-2x+1+4x=17$

$\implies 2x+16=17$

$\implies 2x=1$

$\implies x=\dfrac12$

<u>Question 2</u>

$\textsf{rearrange} \ n=m+1 :$

$\implies -m=-n+1$

$\textsf{add equations} \ -m=-n+1 \ \textsf{and} \ m=2n+2:\\$

$\implies0=n+3$

$\implies n=-3$

$\textsf{substitute} \ \ n=-3 \ \ \textsf{into} \ \ m=n-1:$

$\implies m=-3-1$

$\implies m=-4$

<u>Question 3</u>

subtract the second equation from the first

divide both sides by -4

substitute found value for y into first equation

solve for x

<u>Question 4</u>

$3j=k$

$k=3j+1$

$\textsf{rearrange} \ 3j=k :$

$\implies -k=-3j$

$\textsf{add equations}\ -k=-3j \ \ \textsf{and}\ \ k=3j+1:$

$\implies 0=1$

Solution = A

6 0

2 years ago

What are the x-intercepts of this function?<br><br> g(x) = -0.25x2 − 0.25x + 5

musickatia [10]

Answer:

(-5,0) and (4,0)

x= -5 and x= 4

Step-by-step explanation:

6 0

2 years ago

What would be the least amount of money needed to purchase exactly 19 muffins?

Lady bird [3.3K]

B: 9.25

12/19=5.75/x
X=9.10 but least amount which is 9.25

7 0

2 years ago

Read 2 more answers

Suppose a triangle has to size of lint 42 and 35 and the angles between these 2 sides is 120 which equated should you solve to f

Brilliant_brown [7]

Answer:

$7\sqrt{91}\ units$ or $66.78\ units$

Step-by-step explanation:

we know that

Applying the law of cosines

$c^{2}=a^{2}+b^{2}-2abcos(C)$

In this problem we have

$a=42\ units, b=35\ units, C=120\°$

c is the length of the third side

Substitute

$c^{2}=42^{2}+35^{2}-2(42)(35)cos(120\°)$

$c^{2}=1,764+1,225-2,940cos(120\°)$

$c^{2}=4,459$

$c=\sqrt{4,459}\ units$

$c=7\sqrt{91}\ units$ or $c=66.78\ units$

5 0

3 years ago

EastWind [94]

$\frac{986}{1700} = 0.58$

$0.58 * 100=58$

The company has a 58% success rate.

5 0

3 years ago

Read 2 more answers