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WARRIOR [948]
3 years ago
10

6r+7=13+7r solve the equation.

Mathematics
2 answers:
givi [52]3 years ago
8 0
The answer is r = <span>−<span>6. Hope this helps :D</span></span>
Likurg_2 [28]3 years ago
5 0
The answer is r=-6,,,
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Suppose the contact rate for a phone survey is 78% and that 22% of people will participate in that survey. Assume that agreeing
Gnoma [55]
Remember that, for independent events, the probability that both occurr is the product of the individual probabilities.

a) Probability of being contacted: 78% = 0.78

Probaility of refusing: 1 - 22% = 1 -0.22 = 0.78

Combined probability: 0.78*0.78 = 0.6084

b) The probability of failing to contact or making contact and not geeting them to agree 1 - the probability of contacting and getting them to agree.

The probabilityof contacting and getting them to agree is 0.78*0.22 = 0.1716

The the answer to this question is 1 - 0.1716 = 0.8284


 
8 0
3 years ago
Find the product write the product as a mixed number
Helga [31]

Answer:

\frac{9}{10}  \times 54 =  \frac{9 \times 54}{10}  =  \frac{486}{10}  = 48 \frac{6}{10}  =  \frac{243}{5}

3 0
3 years ago
Find the value of 7u+7 given that -3u-5=4
Serga [27]

Answer:

14

Step-by-step explanation:

-3u = 4+5

-3u = 9

u = -3

7u + 7

7(u +1) = 7(-3+1)

7(-2)

14

3 0
2 years ago
Linda is 12 years younger than her sister Laura. Together their total age is 18. How old is Linda? How old is Laura?
geniusboy [140]

Answer:

Linda: 3 ; Laura: 15

Step-by-step explanation:

Note that Linda + Laura's age is 18, and that Linda is 12 years younger than her sister.

Let "Linda" = x , "Laura" = y:

x + y = 18

x = y - 12

First, plug in y - 12 for x in the first equation:

(y - 12) + y = 18

Simplify.

2y - 12 = 18

Isolate the variable (y). Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. First add, then divide.

2y - 12 (+12) = 18 (+12)

2y = 18 + 12

2y = 30

(2y)/2 = (30)/2

y = 30/2

y = 15

Next, plug in 15 for y in the second equation (the other equation would work too).

x = y - 12

x = (15) - 12

x = 3

Linda's age is 3, Laura's age is 15.

~

7 0
3 years ago
What is the area of the polygon?
Elenna [48]
Hello,

Answer C
13*(12-3)+3*10=147

6 0
3 years ago
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