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Nataly_w [17]
3 years ago
15

Choose the correct ordered pair

Mathematics
2 answers:
VladimirAG [237]3 years ago
8 0
A (8, 1) is your answer. 

x + y = 9
x - y = 7

We have to use a system of equations to solve for both x and y

Take equation 1 (x + y = 9)
Solve for x by subtracting y from both sides
x = 9 - y

Plug 9 - y in for x in the second equation.
(9 - y) - y = 7

Solve for y
9 - 2y = 7
2 = 2y
y = 1

Now that we know y = 1, we can plug 1 in for y in the first equation to solve for x.
x + 1 = 9

Solve for x
x = 8

So our coordinate that satisfies the system of equations is (8, 1)
Mars2501 [29]3 years ago
4 0
Your answer will be A. (8,1)
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An arc has a central angle of 1.8 radians and a radius of 20
Nutka1998 [239]

Answer:

a) <em>Arc  length (l) = 36 inches</em>

b)

The nearest angle in degrees θ = 103.18°

Step-by-step explanation:

<u><em>Step(i):</em></u>-

An arc has a central angle of 1.8 radians and a radius of 20  inches.

Given arc has a central angle of 1.8 radians and

radius of circle = 20 inches

Given arc has a central angle (θ ) = 1.8 radians

<em> Arc  length (l) = r θ </em>

<em>                  l = 20 × 1.8 radians</em>

<em>               l  = 36</em>

The length of arc = 36 inches

b)

<em>we will convert radians to degree</em>

<em> 1.8 × 180° / π =  324° / π ≅ 103.18°</em>

The nearest angle in degrees θ = 103.18°

                           

3 0
3 years ago
If r is ten more than the square root of l , then r = A) l2 + 10 B) (l + 10)2 C) l + 10 D) l + 10 E) l + 10
stiv31 [10]

Answer:

r=\sqrt {I}+10

Step-by-step explanation:

We first need to know the square root of I then add 10 on that square root since r is 10 more than the square root of I

Therefore,

r=\sqrt {I}+10

4 0
3 years ago
4. What is the rule of the nth term of the geometric sequence with <img src="https://tex.z-dn.net/?f=a_%7B4%7D" id="TexFormula1"
hram777 [196]

Answer:

\text{d.}\quad a_n=-2.25(2)^{n-1}

Step-by-step explanation:

The common ratio is given as 2, so the base of any exponential must be 2 (not -2 or 2.25). The 4th term is negative, so the initial value must be negative (since the multiplying factor is positive). The only selection matching these requirements is d.

You know the general term is ...

... an = a1·r^(n-1)

so the 4th term is

... -18 = a1·2^(4-1) = 8·a1

Then the first term is ...

... a1 = -18/8 = -2.25 . . . . . confirms our choice of answer d.

7 0
3 years ago
Whoever responds first will get marked best!!!!Elise's math class has 11 female students and 10 male students. Write the ratio o
nadezda [96]
10:21
There are 10 males and males plus females equal 21
4 0
3 years ago
Graft the solution to the inequality on the number line. <br><br><br> m&gt;2.8
Oduvanchick [21]

Answer:

See the graph of the given inequality in the attachment as shown below:

Step-by-step explanation:

Given the inequality: m > 2.8

To graph this inequality on the number line.

Remember:

  • If the symbol is (\geq or \leq) then you fill in the dot
  • If  the symbol is (> or then you do not fill in the dot.

Since, in the given inequality the symbol is '>'

Now, sketch a number line and draw an open circle around the number 2.8.

You can see the number line as shown below in the attachment.


4 0
3 years ago
Read 2 more answers
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