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3 years ago

Help pls due in 30mins

Mathematics

2 answers:

gogolik [260]3 years ago

8 0

Answer:

Step-by-step explanation:

y = -2x - 4

y = 3x + 3

Since both lines have different slopes, they're non-parallel.

Any pair of non-parallel lines meet an one point. So exactly one solution

julsineya [31]3 years ago

6 0

y=-2x-4

y=3x+3

2x+y=-4

-3x+y=3

2x+y=-4

3x-y=-3

+---------

5x=-7 //5

x=-7/5

3*(-7/5)+y=3

y=-6/5

x=-7/5

y=-6/5

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PLEASE HELP ME WITH THIS QUESTION. please and thank you.

sashaice [31]

3(a+b) and 3a+b: not equivalent

4(x+2y) and 8y+4x: equivalent

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3 years ago

Read 2 more answers

15/15 as a whole number

vladimir2022 [97]

Bruh it's 15. i mean if it is 15/15 then there is 15 things present yunno? idk but i hope this helped, have an amazing day :)

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3 years ago

On paper, make a rectangle that has points A and B as two of its vertices and has a perimeter of 40 units. Draw and label the tw

Westkost [7]

Answer:

$A(x,y),B(x+10,y),C(x+10,y-10) \:and\: D(x,y-10)$

Step-by-step explanation:

If a Rectangle has a perimeter of 40 units, then we can write that formula and find the a formula for the coordinates:

$\left\{\begin{matrix}w+l=20 & \\ w*l=100 & \end{matrix}\right.\Rightarrow w=20-l\Rightarrow (20-l)l=100\Rightarrow -l^2+20l-100=0\Rightarrow l^2-20l+100\Rightarrow (l-10)(l-10)\Rightarrow l=10\therefore l=10\: and\: w=10$

Therefore we can say:

$A(x,y),B(x+10,y),C(x+10,y-10) \:and\: D(x,y-10)$

Technically when $w=l$ in this rectangle is a square, a degenerate square.

8 0

3 years ago

The ratio of ducks to geese in a pond is 3 : 5. There are 27 ducks.<br> How many geese are there?

Gemiola [76]

Answer:

D:G-------> 3:5

27/3=9

9 x 5= 45

45 geese

7 0

3 years ago

I need help! I don't know how to get the answer or what it is. Can anyone help me it's for a test and I'm on my last attempt?

Greeley [361]

Answer:

See explanation

Step-by-step explanation:

(4)

Using the sine ratio in the right triangle

sinΘ = $\frac{opposite}{hypotenuse}$ = $\frac{7}{9}$ , thus

Θ = $sin^{-1}$ ( $\frac{7}{9}$ ) ≈ 51.1°

(5)

Using the tangent ratio in the right triangle

tanΘ = $\frac{opposite}{adjacent}$ = $\frac{4}{5}$ , thus

Θ = $tan^{-1}$ ( $\frac{4}{5}$ ) ≈ 38.7°

7 0

3 years ago