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Black_prince [1.1K]
3 years ago
12

Need help with solving a problem with elimination method

Mathematics
1 answer:
iren2701 [21]3 years ago
4 0
Yes 7x+2x=35 that’s the problem I need help with
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there are 37 chairs and 9 tables in a class room Mrs Kensington wants to put an equal number of chairs at each table how many ch
BartSMP [9]

Answer:

4 chairs at each table and 1 leftover

Step-by-step explanation:

9 goes into 37 four times and there is a remainder of one (37-36 = 1).

4 0
2 years ago
Read 2 more answers
Help please I’m struggling badly because Im bad at math
myrzilka [38]

Answer:

40º

Step-by-step explanation:

if u look at the triangle it would show you

5 0
3 years ago
Read 2 more answers
Please answer asap!!!!!
kherson [118]

Step-by-step explanation:

The equation of a circle can be the expanded form of

\large \text{$(x-a)^2+(y-b)^2=r^2$}(x−a)

2

+(y−b)

2

=r

2

where rr is the radius of the circle, (a,\ b)(a, b) is the center of the circle, and (x,\ y)(x, y) is a point on the circle.

Here, the equation of the circle is,

\begin{gathered}\begin{aligned}&x^2+y^2+10x-4y-20&=&\ \ 0\\ \\ \Longrightarrow\ \ &x^2+y^2+10x-4y+25+4-49&=&\ \ 0\\ \\ \Longrightarrow\ \ &x^2+y^2+10x-4y+25+4&=&\ \ 49\\ \\ \Longrightarrow\ \ &x^2+10x+25+y^2-4y+4&=&\ \ 49\\ \\ \Longrightarrow\ \ &(x+5)^2+(y-2)^2&=&\ \ 7^2\end{aligned}\end{gathered}

⟹

⟹

⟹

⟹

x

2

+y

2

+10x−4y−20

x

2

+y

2

+10x−4y+25+4−49

x

2

+y

2

+10x−4y+25+4

x

2

+10x+25+y

2

−4y+4

(x+5)

2

+(y−2)

2

=

=

=

=

=

0

0

49

49

7

2

From this, we get two things:

\begin{gathered}\begin{aligned}1.&\ \ \textsf{Center of the circle is $(-5,\ 2)$.}\\ \\ 2.&\ \ \textsf{Radius of the circle is $\bold{7}$ units. }\end{aligned}\end{gathered}

1.

2.

Center of the circle is (−5, 2).

Radius of the circle is 7 units.

Hence the radius is 7 units.

4 0
3 years ago
Im even worse at this
stira [4]

The first sentence is irrelevant information, you can ignore that!

There are 20 players. Each player paid the <em>same amount. </em>

In total, they payed $500,000.

We need x, the amount a single player pays. x times 20 will give us 500,000. This gives us the equation 20x=500,000

Divide both sides by 20 to isolate the variable.

x=25,000

3 0
3 years ago
Read 2 more answers
A streaming company charges $10.50 to join plus $2.75 for each month.
Natali [406]

Answer:

the answer is 8

Step-by-step explanation:

jfjxjxjfhrhcurbfbrjfiendjsnex

7 0
3 years ago
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