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2 years ago

Helpppp!!!! Plzzzzzzzzz

Mathematics

2 answers:

meriva2 years ago

6 0

Answer:

false

Step-by-step explanation:

the intersection of two planes is a line. Planes are like grids so if you have a 3d model, they'd create a line

dmitriy555 [2]2 years ago

5 0

Answer:

false

Step-by-step explanation:

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Can someone help me with this? its solving systems by substitution

yKpoI14uk [10]

Answer: x = 1 and y = 2

Given:
y = -3x + 5
5x - 4y = -3

Since we are given y, let’s sub it in the second equation.

5x - 4(-3x + 5) = -3
5x + 12x - 20 = -3
17x = 17
x = 1

After finding x, we can now find y.

5(1) - 4y = -3
-4y = -8
y = 2

Checking:

y = -3x + 5
2 = -3(1) + 5
2 = 2

5x - 4y = -3
5(1) - 4(2) = -3
-3 = -3

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2 years ago

The length of each leg of an isosceles right triangle is 4 cm. What is the length of the hypotenuse

miss Akunina [59]

Answer:

5.65 cm

Step-by-step explanation:

We are given that the length of each leg of an isosceles right triangle is 4 cm and we are to find the length of the hypotenuse.

For this, we will use the Pythagoras Theorem:

$a ^ 2 = b ^ 2 + c ^ 2$

where $a$ is the hypotenuse.

$a ^ 2 = 4 ^ 2 + 4 ^ 2$

$\sqrt { a ^ 2} = \sqrt { 3 2 }$

$a = 5 . 6 5$

Therefore, the length of the hypotenuse is 5.65 cm.

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3 years ago

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18 POINTS What are the 5 properties of a Parallelogram?

kap26 [50]

Answer:

There are six important properties of parallelograms I know:

Opposite sides are congruent (AB = DC).

Opposite angels are congruent (D = B).

Consecutive angles are supplementary (A + D = 180°).

If one angle is right, then all angles are right.

The diagonals of a parallelogram bisect each other

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Nadusha1986 [10]

Answer:

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Step-by-step explanation:

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One side of a square is 445mm long.find the perimeter in m

sergejj [24]

I’m pretty sure the answer is 1.78 meters since it’s 1780 millimeters and that converted into meters is 1.78 meters, by the way don’t forget to add the unit too

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3 years ago