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3 years ago

Ples halp meh ToT

Mathematics

2 answers:

Ahat [919]3 years ago

7 0

Answer:

We live in a sad world

Explanation:

This might help a lil :/

Statements:

5. Angle CAD is congruent to angle DCA;

Angle DAE is congruent to angle AED

11. Angle ADC and Angle EDA are supplementary

18. Angle CAE is 90 degrees

20. AE is perpendicular to AC

Reasons:

3. Definition of isosceles triangle

4. Sum of interior angles of a triangle is 180 degrees.

9. Subtraction

16. Definition of complementary angles

21. Converse of Radius-Tangent Theorem

igor_vitrenko [27]3 years ago

5 0

Answer:

I do have the answers here. They're from the other answer you saw.. Some of the answers are also in the pictures as well. But i'm really sorry, I still haven't figured out 10 yet...

Statements:

5. Angle CAD is congruent to angle DCA;

Angle DAE is congruent to angle AED

11. Angle ADC and Angle EDA are supplementary

18. Angle CAE is 90 degrees

20. AE is perpendicular to AC

Reasons:

3. Definition of isosceles triangle

4. Sum of interior angles of a triangle is 180 degrees.

9. Subtraction

16. Definition of complementary angles

21. Converse of Radius-Tangent Theorem

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PLEASE HELP ASAP 50 POINTS

Katen [24]

Answer:

3x times 5=5 times 3x

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Help with this please

Lera25 [3.4K]

Answer:

C) 0 <\ x OR x />7

Step-by-step explanation:

The first arrow has a closed circle which indicates greater/less than or equal to. All the values shaded are to the left of 0. So, <em>x</em> is less than or equal to 0. The second arrow also has a closed circle. Since the shaded part of the arrow is to the right of 7, <em>x</em> is greater than or equal to 7.

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3 years ago

Expand and simplify each expression. 3(m + 2) + 4(6 + m) = Response area 5(2p + 5) + 4(2p −3) =

SVEN [57.7K]

Answer:

Step-by-step explanation:

3(m+2)+4(6+m)

3m+6+24+4m

3m+4m+6+24

7m+30

--------------------

5(2p+5)+4(2p-3)

10p+25+8p-12

10p+8p+25-12

18p+13

6 0

2 years ago

In an all boys school, the heights of the student body are normally distributed with a mean of 71 inches and a standard deviatio

Vika [28.1K]

Answer: the interval of heights that represents the middle 95% of male heights from this school is between 66 inches and 76 inches.

Step-by-step explanation:

Let x be a random variable representing the heights of males from this school. With the mean and standard deviation given, then the Empirical Rule says the that

1) About 68% of the x values lie between 1 standard deviation below and above the mean.

2) About 95% of the x values lie between 2 standard deviations below and above the mean.

3) About 99.7% of the x values lie between 3 standard deviations below and above the mean.

From the information given,

mean = 71 inches

Standard deviation = 2.5 inches

We want to determine where 95% of x values lies. This is 2 standard deviations from the mean Therefore,

2 standard deviations = 2 × 2.5 = 5 inches

The heights are

71 - 5 = 66 inches and

71 + 5 = 76 inches

7 0

3 years ago

Someone please help, can’t seem to get the problems

VikaD [51]

Answer:

A) 525,500

B) decreasing by 0.995% per year

C) 430,243

D) After 20 years, the population can be expected to be about 20% smaller.

E) 2009

Step-by-step explanation:

A) t=0 represents the year 2000, so put 0 where t is in the expression and evaluate it. Of course, e^0 = 1, so the y-value is 525.5 thousand, or 525,500.

B) Each year, the population is multiplied by e^-0.01 ≈ 0.99004983, or about 1 - 0.995%. That is, the population is decreasing by 0.995% per year.

C) t represents the number of years since 2000, so the year 2020 is represented by t=20. Put that value in the equation and do the arithmetic.

y = 525.5·e^(-0.01·20) = 525.5·e^-0.2 ≈ 430.243 . . . . thousands

The population in 2020 is predicted to be 430,243.

D) The decrease is about 1% per year, so a rough estimate of the decrease over 20 years is 20%. The population of about 500,000 will decrease by about 100,000 in that time period, so will be about 400,000. The value we calculated is in that ballpark. (The actual decrease is about 18.13%; or about 95.2 thousand.)

E) Your working shows the general idea, but you need to remember the numbers in the equation are thousands:

480 = 525.5·e^(-0.01t)

0.913416 = e^(-0.01t) . . . . divide by 525.5

ln(0.913416) = -0.01·t . . . . take the natural log

-100ln(0.913416) = t ≈ 9.06

The population will be 480 thousand after 9 .06 years, in the year 2009.

5 0

3 years ago