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3 years ago

Just need to check these answers

Mathematics

1 answer:

amid [387]3 years ago

3 0

Great Job! they are all correct. :)

Good luck in your next tests.

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X+y=2 2x^2+xy+1 Plz answer

iren2701 [21]

Answer:

answer is y^2-6y+9

Step-by-step explanation:

first take out the value of x from equation 1 which is x=(2-y)

then put the value of x in equation 2 u will get ur answer as y^2-6y+9

6 0

3 years ago

HELP ME IT'S URGENT I COULD FAIL

hjlf

Answer:

pm+2=8

Step-by-step explanation:

Given,

m=3

p=3

We know,

pm+2=3(3)+2

=3×3+2

=6+2

5 0

2 years ago

Read 2 more answers

Please help with this question!!

erica [24]

Answer:

Step-by-step explanation:

The side lengths of ΔEFG are:

5 ft, 12 ft and 13 ft.

The scale factor: s = 4

All sides of the ΔKLM are four times longer than the sides of the ΔKLM.

Therefore the side lengths of KLM are:

5 ft · 4 = 20 ft

12 ft · 4 = 48 ft

13 ft · 4 = 52 ft

3 0

4 years ago

Find all points on the circle (x^2) + (y^2) = 676 where the slope is 5/12

borishaifa [10]

Implicit defferentation

remember that dy/dx y= dy/dx

so
take derivitive of both sides
$2x+2y \space\ \frac{dy}{dx}=0$
solve for $\frac{dy}{dx}$
minus 2x both sides
$2y \space\ \frac{dy}{dx}=-2x$
divide both sides by 2y
$\frac{dy}{dx}=\frac{-2x}{2y}$
$\frac{dy}{dx}=\frac{-x}{y}$

when is the slope equal to $\frac{5}{12}$
solve for $\frac{dy}{dx}=\frac{5}{12}$
$\frac{dy}{dx}=\frac{5}{12}$
$\frac{5}{12}=\frac{-x}{y}$
$5y=-12x$
$y=\frac{-12}{5}x$
find where the circle and this line intersects

substitute $\frac{-12}{5}x$ for y
$x^2+(\frac{-12}{5}x)^2=676$
$x^2+\frac{144}{25}x^2=676$
$\frac{25}{25}x^2+\frac{144}{25}x^2=676$
$\frac{169}{25}x^2=676$
times both sides by $\frac{25}{169}$
$x^2=100$
sqrt both sides, take positive and negative roots
x=+/-10

sub back

$y=\frac{-12}{5}x$
$y=(\frac{-12}{5})(10) \space\ or \space\ (\frac{-12}{5})(-10)$
$y=\frac{-120}{5} \space\ or \space\ \frac{120}{5}$
$y=-24 \space\ or \space\ 24$

the points are (10,-24) and (-10,24)

8 0

3 years ago

What is the sum of 5/11 + 1/3 in lowest terms?

trapecia [35]

Answer:

5/11+1/3

= <u>5*3 + 1*11</u>

= <u>15+11</u>

= 26/33

Can you thanks me?

3 0

2 years ago