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Yuri [45]
3 years ago
9

draw3 rows with 2 counters in each row write a word problem that can be acted out using these counters

Mathematics
2 answers:
Diano4ka-milaya [45]3 years ago
7 0
3 rows 2 counters

OO
OO
OO
 if each O was a counter
it would be 3 rows at 2 counters a piece   also check 3 times to is 6 counters


Gnoma [55]3 years ago
6 0
Pretend * is counter

*   *   *
*   *   *

the word problem could be in a box of chocolates there is 3 rows and 2 chocolates in each row how many chocolates are there total.
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11Alexandr11 [23.1K]

Answer:

CBY Stands for Cry Baby Yodleman

Step-by-step explanation:

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4 0
3 years ago
I need help ASAP PLEASE!
jek_recluse [69]
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All rational numbers are not integers. But all integers are rational numbers.

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4 0
3 years ago
A new screening test for Lyme disease is developed for use in the general population. The sensitivity and specificity of the new
Anit [1.1K]

Answer:

predictive value of a positive test = 18.18%

predictive value of a negative test = 94.03%

Step-by-step explanation:

Sensitivity = 60% = 0.6

Specificity = 70% = 0.7

Let True Positive = TP

True Negative = TN

False Negative = FN

Sensitivity = \frac{TP}{TP + FN} \\0.6 = \frac{TP}{TP + FN} \\0.6TP + 0.6FN = TP\\0.4TP = 0.6FN\\TP = 1.5 FN

Specificity = \frac{TN}{TN + FP} \\0.7 = \frac{TN}{TN + FP} \\0.7TN + 0.7FP = TN\\0.7FP = 0.3 TN\\TN  = 7/3 FP

Prevalence = 10% = 0.1

Three hundred people are screened, T_{total} = 300

Total number of people having the disease, T_{disease} = ?

Prevalence = \frac{T_{disease} }{T_{total} } \\0.1 =  \frac{T_{disease} }{300 }\\T_{disease} = 30

T_{disease} = TP + FN\\30 = TP + FN

But TP = 1.5 FN

30 = 1.5 FN + FN

30 = 2.5 FN

FN = 30/2.5

FN = 12

TP = 1.5 FN = 1.5 * 12

TP = 18

FP + TN = T_{total} - T_{disease} \\FP + TN = 300 - 30\\FP + TN = 270\\FP + \frac{7}{3} FP = 270\\\frac{10}{3} FP = 270\\FP = 27 * 3\\FP = 81

81 + TN = 270

TN = 189

To calculate the Predictive value of positive test (PPT)

PPT = \frac{TP}{TP + FP} * 100\\PPT = \frac{18}{18+81} * 100\\PPT = \frac{18}{99} * 100\\PPT = 18.18 \%

To calculate the Predictive value of negative test (PNT)

PPT = \frac{TN}{FN + TN} * 100\\PPT = \frac{189}{189+12} * 100\\PPT = \frac{189}{201} * 100\\PPT = 94.03 \%

7 0
3 years ago
What times what equals -18
photoshop1234 [79]

-1 x 18 = 18

-2 x 9 = 18

-3 x 6 = 18

-6 x 3 = 18

-9 x 2 = 18

-18 x 1 = 18

Hope this helped!

Nate

7 0
3 years ago
What is 3 x 4/5 equal too?
sineoko [7]
12/5 is the answer!

Hope I helped!
Ps: symbolab.com is a great calculator to help solve those type of problems :-)
5 0
3 years ago
Read 2 more answers
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