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marin [14]
3 years ago
12

3x + y = 5 2x - 2y = -2

Mathematics
2 answers:
zalisa [80]3 years ago
8 0

Answer:

y =5-3x

and

Step-by-step explanation:

<u>First question</u>

Subtract  3 x  from both sides of the equation

Vesnalui [34]3 years ago
7 0

Answer:

Solving the system of equations:

x: 1

y: 2

Step-by-step explanation:

Plug it in to see if it is right, to make sure of course.  Better to be safe than sorry.

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Step-by-step explanation:

\frac{\pi}{2}  = 90

its 1/4 of the circle

circle circumference:

8 \times \pi

we need 1/4 of it, so its

2 \times \pi = 6.28

5 0
3 years ago
How to know if two triangles are congruent. Currently learning SAS, SSS, ASA, and AAS.
krek1111 [17]

Answer:

Refer to the chart below for help:

SSS: When all three sides are equal to each other on both triangles, the triangle is congruent

AAS: If two angles and a non-included (you can think of it as outside) side of one triangle are congruent to the corresponding parts of another triangle, then the triangles are congruent.

ASA: If two angles and the included side of one triangle are congruent to the corresponding parts of another triangle, then the triangles are congruent.

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3 0
3 years ago
WILL MARK BRAINLIEST HELP QUICK Find the sum of the digits of the number 6+66+666+6666 + ... +666...66, where the last number co
zheka24 [161]

Answer:

8,136

Step-by-step explanation:

Add all of the numbers together

8 0
4 years ago
Find the number of sides for a regular polygon whose interior angles each measure 10 times each exterior angle
gavmur [86]

Answer:

22 sides

Step-by-step explanation:

The expression to find an interior angle of a polygon is:

\frac{(n-2)*180}{n}

The expression to find an exterior angle of a polygon is:

\frac{360}{n}

Please note that "n" represents the number of sides the polygon has.

We can use these two expressions to set up an equation.

\frac{(n-2)*180}{n}=10(\frac{360}{n})

Multiply both sides by "n":

(n-2)*180=10n(\frac{360}{n})

Now, distribute:

180(n)-180(2)=\frac{3600n}{n}\\180n-360=3600

Divide both sides by 10:

\frac{180n}{10}-\frac{360}{10}=\frac{3600}{10}\\

18n-36=360

Add 36 to both sides:

18n=360+36\\18n=396

Divide both sides by 18:

n=22

The polygon has 22 sides

6 0
3 years ago
5
NeX [460]

Answer:

(b) the answer

Step-by-step explanation:

8 0
2 years ago
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