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3 years ago

A. X - y = 3 2x - 4y = 8 Given ordered pair: (2,-1).

Mathematics

1 answer:

Studentka2010 [4]3 years ago

7 0

Answer:

X-y=3. 2x-2y=6. 2y=-2

Y= -1

2x-4y=8. 2x-4y=8 2.x-4.-1=8

2x=4. x=2

Step-by-step explanation:

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The diagram shows two regular shapes

Bond [772]

Answer:

x = 144°

Step-by-step explanation:

In the figure given , two regular polygons are given to us. Since the polygon has five sides , it is a regular Pentagon. We know that each angle of a regular Pentagon is 108° .

So , here as per figure two regular Pentagons are attached base to base . Now , we know that,

Measure of complete angle is 360° .
Measure of regular polygon's angle is 108°.

According to Question ,

⇒ 108° + 108° + x = 360°

⇒ 216° + x = 360°

⇒ x = 360° - 216°

⇒ x = 144°

<h3>Hence the value of x is 144° </h3>

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3 years ago

How many solutions does the equation x_1 +x_2+x_3+x_4+x_5=21 have where x_1, x_2, x_3, x_4, and x_5 are nonnegative integers and

omeli [17]

Step-by-step explanation:

$x_{1} + x_{2} + x_{3} + x_{4} + x_{5} = 21\\$ (given)

Let us consider :

$x_{1}$ = $t_{1} + 1$

$x_{2}$ = $t_{2}$

$x_{3}$ = $t_{3}$

$x_{4}$ = $t_{4}$

$x_{5}$ = $t_{5}$

Now, by substituting the above considerations in the above equation, we get:

$t_{1} + 1 + t_{2} + t_{3} + t_{4} + t_{5} = 21\\$

$t_{1} + t_{2} + t_{3} + t_{4} + t_{5} = 20\\$

where,

$t_{i}$ $\geq$ 1

then it follows

n = 20

r = 4

then no. of solutions for the eqn = $_{r}^{n + r}\textrm{C}$

= $_{4}^{24}\textrm{C}$

= 10626

Answer :

no. of solutions for the eqn 10626

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3 years ago

5*213 is a 5 digit number replace the * number by smallest digit to make them divisible by 3

Elina [12.6K]

Answer:

Step-by-step explanation:

that is the answer

because 51213÷3=17071

7 0

2 years ago

Read 2 more answers

Help with this Which equ. Can we use to find the length of side labeled x

bogdanovich [222]

Answer:

Answer D

Step-by-step explanation:

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3 years ago

8 4/5 - 2/3 - ___ = 3 1/10

Amiraneli [1.4K]

Answer:

x= 5 1/30

Step-by-step explanation:

hope this is fine :)

8 0

3 years ago