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Sindrei [870]
3 years ago
12

Find the value of b if the following figures are similar.​

Mathematics
2 answers:
Brrunno [24]3 years ago
8 0
B = 15 - (20 - 12)
b = 15 - 8
b = 7
chubhunter [2.5K]3 years ago
3 0

Answer:

7

Step-by-step explanation:

20 - 12 = 8

15 - b = 8

-b = 8 - 15

b = 7 ( -ve signs will become +ve)

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kinata goes for swimming lessons every 5 days while wayo goes every 6 days. if both kinata and wayo had lessons together at the
eduard
5*6=30
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30th day they both will be together
4 0
3 years ago
Someone help with this
timama [110]

Answer:

18% decrease

Step-by-step explanation:

  1. 7,500 - 6,125 = $1,375
  2. Set up a proportion: \frac{1375}{7500} = \frac{x}{100}  
  3. Cross multiply, then divide: 1375 × 100 = 137500, 137500 ÷ 7500 = 18 1/3
  4. 18 1/3% rounded = 18%
  5. It went down, so it is a decrease

I hope this helps!

7 0
3 years ago
Read 2 more answers
Please help me with this question:)
Lunna [17]

Answer:

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Step-by-step explanation:

7 0
3 years ago
The sum of negative eighteen and a number is eleven. What is the number?
Oksanka [162]

Answer:

29

Step-by-step explanation:

-18 (Negative Eighteen) = A

29 (Positive Twenty Nine) = B

11 (Positive Eleven) = C


First, make A positive, and add C to it. You get B.

Now here is the equation:

-18 + (18 + 11)


-18 + (29)


11

5 0
3 years ago
Help please ............ solve<br><br>Solve<br><br> <br><br>X-3y=z<br>-x+2y=-3
Alenkasestr [34]
You don't need 3 equations to get a general solution.  To do this use the equations x-3y-z=0 and -x+2y+0z= -3.  Start out by letting z = t.  Then solving those 2 equations simultaneously, your x's cancel out leaving you with -y-z=-3.  But since z=t, then -y=-3+t or y=3-t.  Now sub that in for y in the first equation, along with the fact that z=t to get x-3(3-t)-t = 0 and solve for x. x=9-2t.  So a general solution for this would be (9-2t, 3-t, t)
8 0
3 years ago
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