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Norma-Jean [14]
2 years ago
13

Evaluate the expression please help me

Mathematics
2 answers:
Contact [7]2 years ago
8 0

Answer:

19/9 i think

Step-by-step explanation:

Bezzdna [24]2 years ago
7 0
Yep 19/9 ...
No explanation
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Find the quadratic function ..<br><br> 3x2 - y2 = 9<br><br> x2 + 2y2 = 38
ruslelena [56]

Answer:

Step-by-step explanation:

3x2 - y2 = 9.........(1)

x2 + 2y2 = 38......(2)

Let x^2 = a and y^2 = b

:- the two equations becomes

3a - b = 9..........(3)

a + 2b = 38.......(4)

Multiplying (4) by 3

3a + 6b = 114........(5)

Substracting (3) from (5)

3a - 3a + 6b - (-b) = 114 - 9

6b +b = 105

7b = 105

b = 105/7

b = 15

And 3a - b = 9 putting b = 15

3a - 15 = 9

3a = 15+9

3a = 24

a = 24/3

a = 8

And

x^2 = a

x^2 = 8

x = √8

x = √(4×2)

x = 2√2

Also y^2 = b

y^2 = 15

y = √15

6 0
2 years ago
Can someone help me
MArishka [77]

Answer:

ok

Step-by-step explanation:

9+10=21

5 0
3 years ago
Awnser please now !!!!!!!!!!!!!!
polet [3.4K]

Answer:

(2, 0)

Step-by-step explanation:

The x intercept is when y is equal to 0.

Therefore,

8x-1/3*0=16

8x=16

x=2

The answer is (2,0)

5 0
2 years ago
Read 2 more answers
A rectangular room is 11 feet by 18 feet. The ceilings are 10 feet high. If a gallon of paint covers 250 square feet. How many g
Bingel [31]

Answer:

2.32 gallons of paint

Step-by-step explanation:

First, find the area of all 4 sides of the room, with the equation A = lw

11(10)

= 110 (for 2 of the walls)

18(10)

= 180 (for the other 2 walls)

Add these up:

110 + 110 + 180 + 180

= 580

Then, divide this by 250:

580/250

= 2.32

So, 2.32 gallons of paint will be needed to paint the room.

5 0
3 years ago
What is the answer for 0.025×10=
Mashutka [201]
The answer would be 0.25... when multiplying by 10, shift the decimal place one to the right.
8 0
2 years ago
Read 2 more answers
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