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Alexxx [7]
3 years ago
13

1 Solve: -1/2x+2=-x+7

Mathematics
2 answers:
Ugo [173]3 years ago
7 0

Answer:

x=10

Step-by-step explanation:

Step 1: Add x to both sides

Step 2: Subtract 2 from both sides.

Step 3: Multiply both sides by 2.

sveticcg [70]3 years ago
6 0
The correct should be X=10
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Two bowls and one cup weigh 800 grams. One bowl and two cups weigh 700 grams. Find the weight of the bowl and the cup
antoniya [11.8K]

Answer:

\large \boxed{\textbf{Bowl = 300 g; cup = 200 g}}  

Step-by-step explanation:

 Let b  = the mass of a bowl  

and c = the mass of a cup  

We have two conditions:  

\begin{array}{lrcl}(1) &2b + c  & = & 800\\(2) & b + 2c & = & 700\\\end{array}

Calculations:  

\begin{array}{lrcll}(3) & 4b + 2c &=  & 1600&\text{ Multiplied (1) by 2}\\& 3b & = & 900&\text{Subtracted (2) from (3)}\\(4) & b & = & \mathbf{300}&\text{Divided each side by 3}\\ & 600 + c & = & 800&\text{Substituted (4) into (2}\\ & c & = & \mathbf{200}\\\end{array}\\\text{The mass of a bowl  is $\large \boxed{\textbf{300 g}}$ and that of a cup is $\large \boxed{\textbf{200 g}}$}

Check:

\begin{array}{rlcrl}2(300) + 200& =800 & & 300 + 2(200) & = 700\\600 + 200 & = 800& & 300 + 400 & = 700\\800 & = 800& & 700 & = 700\\\end{array}

OK.

6 0
3 years ago
The GCF of 18 and 27 is _______.
Gnoma [55]

Answer:

9

Step-by-step explanation:

The factors of 18 are : 1, 2, 3, 6, 9, 18

The factors of 27 are : 1, 3, 9, 27

The common factors are : 1, 3, 9

The gcf is 9

3 0
3 years ago
Read 2 more answers
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viktelen [127]

Answer: 146.24 square meters

Step-by-step explanation:

4 0
4 years ago
PLEASE HELP<br> BIG FINALS TEST
Troyanec [42]

Answer:

the length of segment AB is 14

Step-by-step explanation:

If Both shapes are the same just from different angles, that means segments AB and RQ are the same. Here is the equations:

3(x) + 8 = ???

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5(x) + 4 = ???

5(2) + 4 = 14

A variable can only represent one number, in this case x was equal to 2, and as a result both solutions, AB and RQ were equivalent to each other, therefore:

Symplified Answer: The Length Of Segment AB Is 14.

7 0
3 years ago
The bullet leaves a rifle with a speed of 699m/s how much time elapses before it strikes a target 1,000m away
Dafna1 [17]

Answer:

I think u need to subtract 1000-699

5 0
3 years ago
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