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enyata [817]
3 years ago
11

HELP

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
8 0
B is the answer
2*7+2*2=18
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Please please please help me with this...
dlinn [17]

Answer:

It's option d.

Step-by-step explanation:

The line y = x + 2 has domain x < 2 (because of the clear circle.)

The lines y = x + 1 has domain x ≥ 2. ( because of the filled circle).

7 0
3 years ago
5.b) If z^(1/2)=x^(1/2)+y^(1/2) , show that (x+y-z)^2=4xy
Rudik [331]

Answer:

Step-by-step explanation:

  • (x+y-z)²= 4xy
  • (x+y-z)²- 4xy = 0
  • (x+y-z)²-(2√x√y)² = 0
  • (x+y-z-2√x√y)(x+y-z+2√x√y) =0
  • [(√x-√y)²-z]*[(√x+√y)²-z]=0
  • (√x-√y)²-z = 0 or (√x+√y)²-z = 0

We have : z^(1/2)= x^(1/2)+y^(1/2) ⇒ √z = √x + √y ⇒ z = (√x + √y)²

  • so (√x+√y)²-z = 0

so (x+y-z)²= 4xy

3 0
3 years ago
HELP ME Four students each wrote an equation. Which two students wrote equations that have no solution?
rjkz [21]

Answer:

Beto and Mark

Step-by-step explanation:

When you simplify Beto's equation, you get 0=5 which is inncorrect. 5 does not equal 0 so there are no solutions. When you simplify Mark's equation, you get 6=2 which is also inncorrect. 6 can not equal 2. If you solve the other 2 equations you get answers that can work.

6 0
4 years ago
Read 2 more answers
Can someone please help me with this
adell [148]
Area of a parallelogram is base x height
48x14=672
5 0
3 years ago
Read 2 more answers
Find the mean deviation from each data set.<br>(a)<br>12<br>6<br>7<br>3<br>15<br>10<br>18<br>5​
Pavlova-9 [17]

Answer:

5

Step-by-step explanation:

you find the mean of the numbers and use the mean and subtract the mean from all of the numbers.

Sorry I am bad at explaining

3 0
3 years ago
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