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Colt1911 [192]
3 years ago
8

Describe and correct the error in solving the equation -1.5+k=8.2 k=8.2+(-1.5) k=6.7

Mathematics
1 answer:
Snezhnost [94]3 years ago
6 0
Hello : 
<span>-1.5+k=8.2
k=8.2+(+1.5)..... (+ 105 no : - )
k=.....</span>
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For questions 8 – 10, answer the questions about tangent-tangent angles.
olchik [2.2K]

Answer:

m(arc ZWY) = 305°

Step-by-step explanation:

8). Formula for the angle formed outside the circle by the intersection of two tangents or two secants is,

Angle formed by two tangents = \frac{1}{2}(\text{Difference of intercepted arcs})

                                                   = \frac{1}{2}(220-140)

                                                   = \frac{1}{2}(80)

                                                   = 40°

9). Following the same rule as above,

Angle formed between two tangents = \frac{1}{2}(\text{Difference of intercepted arcs})

125 = \frac{1}{2}[m(\text{major arc})-m(\text{minor arc})]

250 = [m(\text{arc ZWY})-m(\text{arc ZY})]

250 = m(arc ZWY) - 55

m(arc ZWY) = 305°

Therefore, measure of arc ZWY = 305° will be the answer.

10). m(arc BAC) = \frac{1}{2}([m(\text{arc BDC})-m(\text{arc BC})])

                          = \frac{1}{2}(254-106)

                          = \frac{148}{2}

                          = 74°

4 0
2 years ago
Based on the data in the two-way table, the probability of being 25-35 years and having a hemoglobin level above 11 is __ a.29 b
Alina [70]

The probability of being 25-35 years and having a haemoglobin level above 11 is 34%.

The probability of having a haemoglobin level above 11 is 36%.

Being 25-35 years and having a hemoglobin level above 11 are not dependent on each other.

<h3>What are the probabilities?
</h3>

Probability determines the odds that a random event would occur. The odds of the event happening lie between 0 and 1.

The probability of being 25-35 years and having a haemoglobin level above 11 = number of people between 25 - 35 that have a level above 11 / total number of people between 25 - 35

44 / 128 = 34%

The probability of having a haemoglobin level above 11  = number of people with a level above 11 / total number of respondents

153 / 429 = 36%

To learn more about probability, please check: brainly.com/question/13234031

#SPJ1

4 0
2 years ago
X=2y+7 3x−2y=3 solve by substitution
vazorg [7]

Answer: x= -2

Step-by-step explanation:

8 0
3 years ago
Are loops considered directed edges in terms of a digraph
Leya [2.2K]
Yes if you would like them to be considered that way depending on you x axis degree
5 0
3 years ago
If z1=12(cos⁡55°+isin⁡55°) and z2=4(cos⁡95°+isin⁡95°), then |z1z2|=
Y_Kistochka [10]

Answer:

This isn't middle school

Step-by-step explanation:

8 0
2 years ago
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