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Salsk061 [2.6K]
2 years ago
7

PLZ HELP ILL MARK U BRAINLIEST!!!

Mathematics
1 answer:
lidiya [134]2 years ago
3 0

Answer:

x=18

Step-by-step explanation:

7x-1=125

<u>  +1    +1</u>

<u>7x</u>=<u>126</u>

7      7

X=18

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Please look at a the attached image below, it’s urgent
sveta [45]

Answer:

40⁰ is angle boc

Aod is 75⁰ hope it's help yo

4 0
2 years ago
What is the multiplicative inverse of 2 1/2?<br><br> A) 2/3<br> B) 2/5<br> C)2
zheka24 [161]
If you get rid of the whole number in that fraction, you will have 3/2.
So the opposite of that would be 2/3.
I believe the answer is 2/3.
5 0
3 years ago
Read 2 more answers
Solve this system of equations.<br>y=2x-5<br>y=-2x+3​
Alinara [238K]

Answer:

x = 2

y = -1

Step-by-step explanation:

y = 2x - 5

y = -2x + 3

2x - 5 = -2x + 3

     4x = 8

       x = 2

y = 2(2) - 5

y = -1

5 0
3 years ago
9. Select all expressions that are
Kruka [31]

Answer:

Step-by-step explanation:

2(9a - 6) = 2*9a - 2*6 = 18a - 12    

Yes, it is equivalent.

6*(3a-2) = 6*3a - 6*2 = 18a - 12

Yes, it is equivalent.

-3(6a+4)= -3*6a + 4*(-3) = -18a - 12

No, not equivalent

3(6a+4) = 3*6a + 3*4 = 18a + 12

No, not equivalent

-3(4-6a) = -3*4  - 6a*(-3 )  = -12 + 18a = 18a - 12

Yes, it is equivalent.

7 0
3 years ago
Read 2 more answers
How much of an alloy that is 10% copper should be mixed with 600 ounce of an alloy that is 70%copper in order to get an alloy th
svetoff [14.1K]

Answer:

1200 ounces

Step-by-step explanation:

How much of an alloy that is 10% copper should be mixed with 600 ounce of an alloy that is 70%copper in order to get an alloy that is 30%copper?

Let us represent

Number of ounce of 10% copper = x

Hence, our Equation =

x × 10% + 600 × 70% = (x + 600) × 30%

0.1x + 420 = (x + 600)0.3

0.1x + 420 = 0.3x + 180

Collect like terms

0.3x - 0.1x = 420 - 180

0.2x = 240

x = 240/0.2

x = 1200 ounces

7 0
2 years ago
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