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Fudgin [204]
3 years ago
13

How do I solve this? What do they mean

Mathematics
1 answer:
adell [148]3 years ago
8 0
Complimentary angles add to equal 90°. Write two equations to solve for two variable.
J + K = 90
J = K - 18

use substitution or elimination to solve
I will use substitution. substitute (K - 18) for J in the first equation to combine equations into one in only variable K.

(K - 18) + K = 90
2K - 18 = 90
2K = 90 + 18
2K = 108
K = 108/2
K = 54°

J and K are complimentary.
J + 54° = 90°
J = 36°
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In the figure below,S is between Q and T and R is the midpoint of QS. If RT=9 And RS=4 find QT
LiRa [457]

Answer:

QT = 13

Step-by-step explanation:

since R is the midpoint of QS, QR = RS = 4

QT = RT + QR = 9 + 4 = 13

3 0
3 years ago
Eleven members of the Middle School Math Club each paid the same amount for a guest speaker to talk about problem solving at the
Ilia_Sergeevich [38]
The correct answer for the question that is being presented above is this one: "<span>The missing digit is 3."</span>

The missing digit is represented by A  ⇒  $1A2, where A represents a whole number from 0 to 9.

Try substituting any number from 0 to 9 for A (the middle digit or tens place) , then divide by 11 members.

<span>Option 2:  A = 3  ⇒  $1 </span><span>3 </span>2
$ 132 ÷ 11 = $12

The only one-digit that gives a whole number quotient when it takes the place of tens digit in $1 __2  is<span> 3.</span><span>   Because $ 132 ÷ 11 = $ 12. (Option 2)</span>

The missing digit is 3.
6 0
3 years ago
Find the distance between points A (10,-1) and B (-2,5). Round to the nearest tenth
bija089 [108]

Answer:

<h2>The answer is 13.4 units</h2>

Step-by-step explanation:

The distance between two points can be found by using the formula

d =  \sqrt{ ({x1 - x2})^{2}  +  ({y1 - y2})^{2} }  \\

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

A (10,-1) and B (-2,5)

The distance is

|AB|  =  \sqrt{ ({10 + 2})^{2} +  ({ - 1 - 5})^{2}  }  \\  =  \sqrt{ {12}^{2}  +  ({ - 6})^{2} }  \\  =  \sqrt{144 + 36}  \:  \:  \:  \:  \:  \:  \:   \\  =  \sqrt{180}  \\  = 6 \sqrt{5}  \:  \:  \\  =13.416407

We have the final answer as

<h3>13.4 units to the nearest tenth</h3>

Hope this helps you

7 0
3 years ago
Use the rules of significant figures to simplify the following expression: 22.674 • 15.05
ArbitrLikvidat [17]
1. count how many sig figs are in the number with least sig figs
2. multiply
3. cut the result off at the number of sig figs on top


15.05 has 4 sig figs
341.2

C
3 0
3 years ago
If the figure is a polygon, name it by its number of sides.
maxonik [38]

Answer: five sides is the answer:))


Step-by-step explanation:


4 0
3 years ago
Read 2 more answers
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