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Marina86 [1]
4 years ago
11

Rational or irrational (-6.25)

Mathematics
1 answer:
Nat2105 [25]4 years ago
7 0

No. A rational plus an irrational is always an irrational.

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Solve the simultaneous equations<br> 2x+3y20 <br> 2x+5=10
ruslelena [56]

Answer:

x=\frac{5}{2} \\y=5

( 5/2, 2 )

Step-by-step explanation:

Solve by substitution method:

2x+5=10\\\2x+3y=20

Solve 2x+5=10 for x:

2x+5=10

2x=10-5

2x=5

x=5/2

Substitute 5/2 for x in 2x+3y=20:

2x+3y=20

2(\frac{5}{2} )+3y=20

3y+5=20

3y=20-5

3y=15

y=15/3

y=5

∴ x=\frac{5}{2} and y=5

<em>hope this helps....</em>

6 0
3 years ago
The morning temperature is -15° by the afternoon the temperature rises by 20° right in addition expression for the afternoon tem
GrogVix [38]

Answer:

The afternoon temperature is

5°

Step-by-step explanation:

Step one:

given data

the morning temperature=  -15°

the afternoon temperature rose by  20°

Required

The afternoon temperature

Step two:

Hence the afternoon temperature is given as

=-15°+20°

= 5°

8 0
3 years ago
Please help me I’m timed
likoan [24]

Answer:

-6

Step-by-step explanation:

4 0
3 years ago
Isnt the median 6 i am the confuse
GREYUIT [131]
Median is the middle number
so in this picture median = 5

answer is 5
7 0
3 years ago
Read 2 more answers
How to understand piecewise functions
Nataly [62]
Each piece is defined over some (limited) domain. When you are evaluating or graphing a piecewise function, you only evaluate or graph the function whose domain includes the variable value of interest.
6 0
3 years ago
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