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2 years ago

Answer the question please

Mathematics

2 answers:

mr_godi [17]2 years ago

8 0

Answer:

117

Step-by-step explanation:

<DAB = <B + <C

nikitadnepr [17]2 years ago

7 0

Answer:

DAB=117

Step-by-step explanation:

63+54=117

then do

180-117=63

so BAC=63

then sence BAC and DAB are supplimentary do

180-63=117

so DAB=117

If Brainiest is earned its greatly Appreciated

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The correlation analysis assumes that the measurements have a bivariate normal distribution in the population. Select all of the

RoseWind [281]

Answer:

A. True

B. True

C. False

D. False

E. False

F. False

G. True

Step-by-step explanation:

Select all of the features that define a bivariate normal distribution.

(this means that we select only those that are properties of the bivariate normal distribution)

A. Bell-shaped probability distribution in two dimensions rather than one

TRUE because any combination of the two is still normal Z(x,y)=aX+bY

B. A relationship between X and Y that is not linear

TRUE The contours of the distribution are ellipses.

C. The presence of outliers

FALSE possible, but not always.

D. Either X or Y has a decidedly skewed distribution

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E. A relationship between X and Y that is linear

FALSE see answer to B

F. A cloud of points that is funnel shaped (wider at one end than the other)

FALSE normal distributions are symmetric

G. The frequency distributions of X andY separately are normal

TRUE For example, in Z(x,y)=aX+bY, putting a or b=0 means that X and Y separately are normal.

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3 years ago

The building below is shown to scale; for every 1 inch of drawing, it is 5 feet in actual distance. The exterior surface area of

VashaNatasha [74]

Answer:

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Step-by-step explanation:

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2 years ago

Factor tree 67344 using prime numbers

Aleksandr-060686 [28]

Answer:

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Step-by-step explanation:

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2 years ago

4 < 4x- 16 Please answer!

anzhelika [568]

Answer:

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You do that by adding 16 to both sides of the greater than sign.

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2 years ago

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Irina18 [472]

Answer:

22.38 g of silicone-32 will be present in 300 years.

Step-by-step explanation:

A radioactive half-life refers to the amount of time it takes for half of the original isotope to decay and its given by

$N(t)=N_0(\frac{1}{2})^{\frac{t}{t_{1/2}}$

where,

$N(t)$ = quantity of the substance remaining

$N_0$ = initial quantity of the substance

$t$ = time elapsed

$t_{1/2}$ = half life of the substance

From the information given we know:

The initial quantity of silicone-32 is 30 g.
The time elapsed is 300 years.
The half life of silicone-32 is 710 years.

So, to find the quantity of silicone-32 remaining we apply the above equation

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2 years ago