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Alecsey [184]
3 years ago
9

Does anyone understand this

Mathematics
1 answer:
melomori [17]3 years ago
7 0
I hope this helps you

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Solve the system 8y-5z=23 3y-2z=6<br><br> 100 POINTS
Hatshy [7]

Answer:

z = 21 ; y= 16

Step-by-step explanation:

first of all we have to isolate a variable.

In second expression we can obtain:

3y = 2z+6

y = 2/3 z + 2

now we have to substitute this value in the first equation and solve it

8(2/3z+2)-5z = 23

16/3z + 16 -5z = 23

16z +48 - 15z = 69

z = 21

now we have to substitute z in the second equation:

y = 2/3 (21) +2

y = 14+ 2 = 16

y = 16

6 0
3 years ago
Read 2 more answers
51/8 times 17/4and simplified
gayaneshka [121]

Answer:

27 3/32

Step-by-step explanation:

3 0
3 years ago
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The cost of going to the big playland park for a family is given by C=15x + 50, where C represents the cost and x represents the
IgorC [24]
Set the equation to 125.

15x+50= 125

Subtract 50.

15x= 75

Divide by 15 into both sides.

x= 5

5 family members went.

I hope this helps!
~cupcake
3 0
3 years ago
If m angle A is 155 degrees what is m angle c?
Lubov Fominskaja [6]
Hi again! If the measure of angle A is 155 degrees, then the measure of angle C is also 155 degrees because vertical angles are congruent. Vertical angles are the two angles created when two lines intersect that are NOT linear. 
6 0
3 years ago
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Determine which of the following formulas hold for all invertible n×n matrices A and B.
garik1379 [7]

Answer:

1 hold

2 hold

3 does not hold

4 hold

5 hold

6 hold

7 does not hold

8 does not hold

9 Does not hold

10 Hold

Step-by-step explanation:

The detailed step by step verification is as shown in the attachment

4 0
3 years ago
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