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Citrus2011 [14]
3 years ago
5

Show how to use substitution or elimination to solve the following system of equations. Write your solution as an ordered pair:

Mathematics
1 answer:
MAVERICK [17]3 years ago
5 0

Answer:substitution

Step-by-step explanation:

baka

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What is the length of the diagonal of a square with side lengths 7 square root of 2 ? round to the nearest tenth if necessary?
mr_godi [17]
There is 2 ways to solve this type of question.

Method 1
--------------------------------------------------
Formula
--------------------------------------------------
a² + b² = c²

--------------------------------------------------
Apply the formula
---------------------------------------------------
(7√2)² + (7√2)² = c²
c² = 98 + 98
c² = 196
c = √196
c = 14

--------------------------------------------------
Ans: The diagonal length is 14cm 
--------------------------------------------------

_____________________________________________________________

Method 2
--------------------------------------------------
Identify the triangle
--------------------------------------------------
This is a special triangle
45° - 45° - 90°

--------------------------------------------------
Property of the Angles 
--------------------------------------------------
x - x - x√2

--------------------------------------------------
Find hypotenuse
--------------------------------------------------
Given that the non-hypotenuse is 7√2

Hypotenuse =  (7√2)(√2)
Hypotenuse =  7 x 2
Hypotenuse = = 14cm

--------------------------------------------------
Ans: The diagonal length is 14cm 
--------------------------------------------------

6 0
3 years ago
Convert -62.8º C into Fº using the correct formula below. Conversion Formulas: Cº = (Fº - 32º) 1095-02-02-01-00_ 1.8 Fº = 1.8 x
Mrac [35]

Answer:

- 81.04°F

Step-by-step explanation:

Given the question :

Convert - 62.8°C into F°

Using the conversion formula :

Fº = 1.8 x Cº + 32º

C = - 62.8°

Fº = (1.8 x - 62.8)+ 32º

F° = - 113.04° + 32°

= - 81.04°F

7 0
3 years ago
A man owns a store. One week he sells 100 loaves of bread. If he sells twice as many loaves the next week, how many loaves did h
maw [93]
Loaves sold on the first week=100
Loaves sold on the next=2(100)=200
Total number of loaves=200+100=300
6 0
3 years ago
HELP ME PLEASE I WILL MARK BRAINLIEST <br>​
Murljashka [212]
Massage me if it’s not clear

Hope it’s right
Best luck with your studying

5 0
3 years ago
Read 2 more answers
Im suppose to select the number line that goes with the inequalities.
kvasek [131]

Answer:

Number line C

Step-by-step explanation:

First, you isolate x. This gives you x>=3+4 or x>= 7. Next, you find a number line greater than or equal to which cancels out A and D. Now whichever line starts on 7, is the answer which is C

3 0
3 years ago
Read 2 more answers
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