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Anastasy [175]
3 years ago
11

Help me asap please! please answer all 4 questionsss!! thank you very muchhh!!! ​

Mathematics
1 answer:
cupoosta [38]3 years ago
7 0

Answer:

5. DE

6. 6cm

7.20 in

8. DCF

Step-by-step explanation:

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Zarrin [17]

Answer:

21.2 yd

Step-by-step explanation:

8 + 6 + 7.2 = 14 + 7.2 = 21.2

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2 years ago
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Solve system of equations 2x + 2y + 5z = 7 6x + 8y + 5z = 9 2x + 3y + 5z = 6
svet-max [94.6K]

Answer:

the values of x, y and z are x= 2, y =-1 and z=1

Step-by-step explanation:

We need to solve the following system of equations.

We will use elimination method to solve these equations and find the values of x, y and z.

2x + 2y + 5z = 7     eq(1)

6x + 8y + 5z = 9     eq(2)

2x + 3y + 5z = 6     eq(3)

Subtracting eq(1) and eq(3)

2x + 2y + 5z = 7

2x + 3y + 5z = 6

-    -       -        -

_____________

0 -y + 0 = 1

-y = 1

=> y = -1

Subtracting eq(2) and eq(3)

6x + 8y + 5z = 9    

2x + 3y + 5z = 6    

-     -      -          -

______________

4x + 5y +0z = 3    

4x + 5y = 3      eq(4)

Putting value of y = -1 in equation 4

4x + 5y = 3

4x + 5(-1) = 3

4x -5 = 3

4x = 3+5

4x = 8

x= 8/4

x = 2

Putting value of x=2 and y=-1 in eq(1)

2x + 2y + 5z = 7

2(2) + 2(-1) + 5z = 7

4 -2 + 5z = 7

2 + 5z = 7

5z = 7 -2

5z = 5

z = 5/5

z = 1

So, the values of x, y and z are x= 2, y =-1 and z=1

5 0
3 years ago
What number is 73% of 58?
lapo4ka [179]
73℅ of 58
= (73/100) × 58
= (73×58)/100
= 4234/100
= 42.34
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3 years ago
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What expression can represent 4 more than the product of 6 and 2 1/2
mrs_skeptik [129]

Answer:

6 x 2 1/2 + 4 ??? I hope this is correct :)

Step-by-step explanation:

If its not.. I'm so sorry:(

Have a nice day! <3

7 0
3 years ago
About how many inches are equivalent to 3 meters? Round the number(s) needed in the table to the nearest tenth to find the appro
Burka [1]

Answer:

D

Step-by-step explanation:

three meters is 118.11 inches, so if you were to round that you would get 120 inches. That means the answer is D.

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