Mathematics College

PLEASE HELP ASAP PLEASE I'VE BEEN UP ALL NIGHT TRYING TO DO IT I DON'T UNDERSTAND PLZ HELPP!!​

PLEASE HELP ASAP PLEASE I'VE BEEN UP ALL NIGHT TRYING TO DO IT I DON'T UNDERSTAND PLZ HELPP!!

Answers

Answer 1

Answer:

Angle COD=40

Step-by-step explanation:

(2a+62)+ (54-a)+(5a-20)=180

6a+96=180

6a=84

a=14

Angle AOC=2(14)+62=90

Angle COD=54-14=40

Angle DOB=5(14)-20=50

Answer 2

Answer:

Angle COD, 40 degrees

Step-by-step explanation:

Alrighty, to start, Angle AOB is a 180 degree angle because it is a line.

Therefore, if we combine all of the variables and numbers together, we can set it equal to 180 degrees to find a.

2a+62+54-a+5a-20

6a+96=180

6a=84

a=14

Next, plug in this value into each of the given angles provided with variables and numbers:

Angle AOB:

2a+62

2(14)+62

28+62

90 degrees

Angle COD:

54-a

54-14

40 degrees

Angle DOB:

5a-20

5(14)-20

70-20

50 degrees

From this, it can be found that Angle COD has the smallest angle, with it being 40 degrees.

Related Questions

a) Work out the size of angle x.

b) Give reasons for your answer.

Answers

Answer:

x = 75°

Step-by-step explanation:

Angle x and the angle measure 105° are same-side exterior angles. Same-side exterior angles are supplementary. Supplementary angles are angles measures that add up to 180°. So 180° - 105° = 75°.   x = 75°

Answer:

75

Step-by-step explanation:

180° - 105° = 75°. x = 75°

Here is the final problem jaded

Answers

Answer:

x = 12.99

Step-by-step explanation:

Tan(33) = [tex]\frac{x}{20}[/tex]

Tan(33) * 20 = x

12.99 = x

Hope this helps!

Write the equation of the circle with a center (5, -7) and radius = 7

Answers

Answer:

[tex](x-5)^{2} + (y+7)^{2} = 49[/tex]

Step-by-step explanation:

9514 1404 393

Answer:

  (x -5)^2 +(y +7)^2 = 49

Step-by-step explanation:

The equation of the circle with center (h, k) and radius r is ...

  (x -h)^2 +(y -k)^2 = r^2

Putting (h, k) = (5, -7) and r = 7 into this form, your equation is ...

  (x -5)^2 +(y +7)^2 = 49

Options are:

X=2, Y=3

X=3, Y=2

X= -2, Y=3

X=4, Y=8

Answers

Answer:

x = 4, y = 8

Step-by-step explanation:

If the triangles are congruent by the HL Theorem, it means that the hypotenuse and one leg of the right triangle are congruent to the corresponding one leg and hypotenuse of the other.

Thus;

2x - 5 = y - 5 (Eqn 1) and

y - 3 = x + 1 (Eqn 2)

Thus:

Rewrite equation 1

2x = y - 5 + 5

2x = y

Substitute y = 2x in equation 2.

y - 3 = x + 1 (Eqn 2)

2x - 3 = x + 1

Collect like terms

2x - x = 3 + 1

x = 4

Substitute x = 4 in equation 1

2x - 5 = y - 5 (eqn 1)

2(4) - 5 = y - 5

8 - 5 = y - 5

3 = y - 5

3 + 5 = y

8 = y

y = 8

h(-3), h(5), h(2), h(0)

h(x) = {x+1, x<2
{2x-1, x>2

Solve these:

h(-3) =
h(5) =
h(2) =
h(0) =

Answers

Answer:

h(-3) = -3h

h(5) = 5h

h(2) = 2h

h(0) = 0

convert 12 1/2 to a precent A. B. 12.5% C. 125% D. 1,250%

Answers

B. 12.5% is your answer

What is 4 27/50 as a decimal

Answers

Answer:

4.54

Step-by-step explanation:

There are 3 red, 5 green, 7 blue, 1 black and 4 yellow marbles in a bag. Once a marble is selected, it is not replaced. Find the probability of selecting a green marble, then a red marble.

Answers

Answer:

Step-by-step explanation:

Initial condition:

3 red

2 blue

5 green

2/10 times 5/9=2/9 times 5/10 or 1/2 = 2/9 times 1/2=1/9

hope this helps have a good day too.

If you borrow $900 for 4 years at an
annual interest rate of 5%, how
much will you pay altogether?

Answers

Answer:

$995.04

Step-by-step explanation:

You pay $20.73 every month. $20.73 x 48 = $995.04

Answer:

i am going to assume that for interest you mean simple interest.

900*5%*4=180

180+900=1080.

if you mean compound interest...

900*(1+5%)^4=1094.0 (1.d.p)

Suppose a city with population 340,000 has been growing at a rate of 4% per year. If this rate continues, find the population of this city in 20 years.

Answers

Answer:

Total population = 340000

Growing rate = 4%

Growing population = 340000×4/100

= 13600 per year

Now population increased in 20 years = 13600 × 20 = 272000 population.

Now ,

The population after 20 years = 340000+272000

=612000

So the population after 20 years = 612000

anced
d
15. A two-digit positive number is such that the ones
digit is 2.5 times as much as the tens digit. If the
difference between the number and the number
obtained when the digits are reversed is 27, find
the number.

Answers

Answer:

The number is 52 or 25.

Step-by-step explanation:

The photo has the full solution

The number, when A two-digit positive number is such that the one's digit is 2.5 times as much as the ten's digit, is 25.

What is the equation?

In other terms, an equation is a mathematical statement stating that "this is equivalent to that." It appears to be a mathematical expression on the left, an equal sign in the center, and a mathematical expression on the right.

Given:

A two-digit positive number is such that the one's digit is 2.5 times as much as the ten's digit,

Write the equations of the statement as shown below,

Assume the one's digit is x and the ten's digit is y then,

x = 2.5y

(10y + x) - (10x + y) = 27

Solve the above equation and find the value of x and y,

10y + x - 10x - y  = 27

-9x + 9y = 27

-x + y = 3

-2.5y + y = 3   (Plug value of x)

-1.5y = 3

y =  2

x = 2.5 × 2

x = 5

Number = 2 × 10 + 5 = 25

Thus, the number is 25.

To know more about equation:

https://brainly.com/question/12788590

#SPJ2

Please help me lol I need it picture should be below ​

Answers

9514 1404 393

Answer:

  m∠Y = 40°

Step-by-step explanation:

The sum of complementary angles is 90°. If we let s and y represent m∠S and m∠Y, respectively, the angle measures in degrees satisfy ...

  s + y = 90

  (4y -110) +y = 90 . . . . . . . . substitute for s

  5y = 200 . . . . . . . . . add 110

  y = 40 . . . . . . . divide by 5

The measure of angle Y is 40°.

find the equation of the straight line passing through the point (3, 3) which is perpendicular to the line y=-1/2x-4

Answers

Answer:

y = 2x - 3

Step-by-step explanation:

The negative recipricol is -1/(-1/2) = 2

Use point-slope equation:

y-y1 = m(x-x1)

x1 = 3, y1=3

y-3 = 2(x-3)

y-3 = 2x-6

y = 2x-3

After the introduction of a new soft drink, 200 people are asked to take a taste test to see how it is being received. Of those who participated, 48 said they preferred the new soft drink, 112 preferred the old soft drink, and 40 could not tell any difference. What is the probability that a person in this survey, chosen at random, preferred the new soft drink

Answers

Answer:

Step-by-step explanation:

The possibility is 48/200

The probability of people preferred the new soft drink is 6/25.

To find the probability.

What is probability?

probability is the ratio of the number of favorable outcomes and the total number of possible outcomes.

Given that:

Total number of people taste test=200

Number of people who participated new soft drink=48

Number of people who participated old soft drink=112

Number of people who  participated could not tell any difference=40

So, the probability of people preferred the new soft drink=

favorable outcome/total number of outcome

probability of people preferred the new soft drink=48/200

probability of people preferred the new soft drink=6/25

So, the probability of people preferred the new soft drink is 6/25.

Learn more about probability here:

https://brainly.com/question/23471143

#SPJ2

For which of the following is x=-5 a solution? Select all that apply.
A) x+10=-5
B) -x^2+50=25
C) |2x|=10
D) x<0
E) 2x<10

Answers

Answer:

B

D

E

[tex]b. - ( - 5)^{2} + 50 = 25 \\ \\ d. \: - 5 < 0 \\ \\ e. \: 2( - 5) < 10[/tex]

Answer:

B and C

Step-by-step explanation:

Those 2 are the only ones that equal 5,-5

If x= 4, calculate the value of: 3x2 + 4x

Answers

Answer 64
Step by step exploration
3*4*4+4*4=48+16=64

Answer:

64

Step-by-step explanation:

x = 4

Substitute x and calculate:

3x² + 4x = 3(4²) + 4(4) = 48 + 16 = 64

How many 1/3s are in 1 2/3?

Answers

Answer:

12

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

3/3+2/3 = 5/3

Answer is 5

Help! CAN anyone help? I’ll give Brainly!! It’s not 5.75% x 60,000... thank you

Answers

The answer is 3400 or 3684

help help exponents help

Answers

Answer:

3

Step-by-step explanation:

The base is the number below the exponent.

Please help me this is for 40 points !!!!

Answers

Help you with what? There is no context. Send the text

Find the dot product of u and v.

Answers

9514 1404 393

Answer:

  -4

Step-by-step explanation:

The dot product is the sum of products of corresponding coefficients.

  u·v = (4)(-1) +(0)(2) = -4

  u·v = -4

I need to finish this today! Please help!

Answers

Answer:

13 square inches

Step-by-step explanation:

Add both values for the area together to get your answer

small one is

1*1=1 square inch

large one is

4*3=12 square inches

Answer:

13

Step-by-step explanation:

area of the polygon = area of a rectangle +area of the square

area of the polygon = 3*4 +1*1 = 12+1 = 13 in²

What is the scale factor of this dilation?

Answers

9514 1404 393

Answer:

  3/5

Step-by-step explanation:

The scale factor is the ratio ...

  (image measure)/(original measure)

The diagram shows that the original measure of 5 becomes a measure of 3 on the image. The scale factor is 3/5.

The probability that no one is waiting in a given hour

Answers

Answer:

two people in an hour

Step-by-step explanation:

thats why I think that why no one is waiting

Answer:

Step-by-step explanation:

HELP ME PLEASEEEEEEEEEEEE

Answers

Answer:

A) 3.5 m

Step-by-step explanation:

3.5 x 2 = 7/2 = 3.5

If you save $110 in one month, how much will you save in one year?

Answers

There is 12 months in a year so you need to multiply 12 by 110 which is 1320

Your answer is: 1320 saved in one year

Hope this helped :)

How many times can you fill a 250ml cup from a 4 litre jar?​

Answers

sorry i’m unsure, maybe try a different solution

Find the range of the data. 45,76,98,21,52,39

Answers

I think the Range= 77

In order to find range, you reorder the numbers from smallest to largest (21 39 45 52 76 98). Then you subtract the smallest number from the largest number and get the answer (98-21=77)

Hope this helps!

What is the volume of this triangular prism in cm^3? Image is in the png link. Ples help. :(

Answers

It’s 855 sike I lied thanks hope it help !

over the weekend MRs. Kinston sold slices of cake at a bake sale fundraiser

Answers

What’s the question?
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