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Stels [109]
3 years ago
14

What is the value of r?

Mathematics
2 answers:
goldfiish [28.3K]3 years ago
7 0
Your answer will be 6. You have to solve for r. You have to add 2 and minus 5 from both sides.
Anarel [89]3 years ago
4 0

Answer:

6

Step-by-step explanation:

5+r-2=9

5+6=11

5+6-2=9

5+6=11

11-2=9

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Write an expression that is equivalent to (3x-2)-x^2+2x+5), combing like terms
ss7ja [257]

Answer:

-x^2+5x+3

Step-by-step explanation:

Remove unnecessary parenthesis.

3x-2-x^2+2x+5

Collect like terms.

5x+3-x^2

Use the commutative property to reorder the terms.

-x^2+5x+3

4 0
3 years ago
Please help quick for 25 points with explanations. Any silly and absurd answers will be reported.
amid [387]

Answer:

Note that the tangents to the circles at A and B intersect at a point Z on XY by radical center. Then, since∠ZAB=∠ZQA and ∠ZBA=∠ZQB. ∠AZB+∠AQB=∠AZB+∠ZAB+∠ZBA=180°. ∴ZAQB is cyclic.But if O is the center of w, clearly ZAOB is cyclic with diameter ZO, so ∠ZQO is 90° ⇒Q is the mid-point of XY.Then, by Power of a Point, PY· PX = PA · PB = 15 and it is given that PY+PX = 11. Thus,PX=(11±\sqrt{61})/2. So, PQ=\frac{\sqrt{61} }{2}, PQ²=\frac{61}{4}. Thus, the answer is 61+4=65.

Step-by-step explanation:

4 0
3 years ago
41=12d-7 can someone help me?​
OverLord2011 [107]

Answer:

d = 4

Step-by-step explanation:

41 = 12d - 7

48 = 12d

d = 4

6 0
3 years ago
Read 2 more answers
9.
Elena L [17]

<u>Given</u>:

The distance (in kilometers) Dora hiked is modeled as a function of time.

We need to determine the average rate of change in distance hiked, measured in kilometers per hour, between 8:30 am to 1:30 pm.

<u>Average rate of change:</u>

Let us write the time and the distance hiked in coordinates for the time 8:30 am and 1:30 pm.

Thus, the coordinates are (8.30, 4) and (1,12)

The average rate of change can be determined using the formula,

m=\frac{y_2-y_1}{x_2-x_1}

Substituting the points (8.30, 4) and (1.30,12), we get;

m=\frac{12-4}{1.30-8.30}

m=\frac{8}{-7}

m=-1.14

Rounding off to the nearest whole number, we get;

m=-1

Therefore, the average rate of change is -1.

7 0
3 years ago
In a class, 45 students take the SAT exam. The number of boys is 7 more than the number of girls
velikii [3]
There are 26 boys and 19 girls,
Take away 7 from 45 to get 2g(# of girls)
45-7=38 38=2g To get to # of girls,find just one g
38/2=19 so 19 girls
45-19=boys 45-19=26 boys
6 0
2 years ago
Read 2 more answers
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