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VLD [36.1K]
3 years ago
5

If R is the midpoint of QS, find QS. QR=5x-3 RS=21-x

Mathematics
1 answer:
steposvetlana [31]3 years ago
4 0

Answer:

QS = 34

Step-by-step explanation:

if R is the midpoint, then the two divided segments are equal to each other.

5x - 3 = 21 - x

Add x

6x - 3 = 21

Add 3.

6x = 24

Divide 6.

x = 4

Substitute this x value into any equation.

5(4) - 3 = 20 - 3 = 17

So half of QS is 17.

QS = 17 * 2 = 34

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3(58 - 6) - 2(4x + 5)?<br> Which expression is equal to
larisa86 [58]

Answer:

-8x + 146

Step-by-step explanation:

Step 1: Write out expression

3(58 - 6) - 2(4x + 5)

Step 2: Parenthesis

3(52) - 2(4x + 5)

Step 3: Multiply

156 - 2(4x + 5)

Step 4: Distribute

156 - 8x - 10

Step 5: Combine like terms (constants)

-8x + 146

7 0
3 years ago
Question 2 (1 point)
jonny [76]

Answer:

(2,4)

Step-by-step explanation:

Equation 1:

x+y=6(for the 6 times they scored)

x=-y+6

Equation 2:

7x+3y=26 (for the 7 point touchdowns, and 3 point field goals.)

7(-y+6)+3y=26(replace x with -y+6)

7y+42+3y=26(distrubite property)

-4y+42=26

-4y= -16

y= 4

Now that we know that y is equal to 4:

x+4=6

x=2

5 0
3 years ago
Read 2 more answers
Which is greater 6 cups or 4 quarts
ivann1987 [24]

Answer:

4 quarts

Step-by-step explanation:

because 4 quarts is 16 cups

4 0
3 years ago
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Problems 4-5 <br> Prove statements about segments and angles
antiseptic1488 [7]

Answer:

15

15

Step-by-step explanation:

x + 20 = 35

   - 20   -20

        x = 15


5x - 14 = 16 + 3x

    + 14   +14

5x        = 30 + 3x

-3x                - 3x

2x         = 30

x            = 15


3 0
4 years ago
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Answer:

$7.56

Step-by-step explanation:

They sell it in $2.25 per kg

Hamburger: cost

      1 kg      :  2.25

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1 x 3.4= 3.4

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6 0
3 years ago
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