Mathematics High School

Please help, I’m being timer

Answers

Answer 1

Answer:

CB=18

And the measure of angle BDA is 21 degrees

Step-by-step explanation:

Answer 2

Answer: ∠BDA = 21; CB = 30

have:

sin ∠BDC = [tex]\frac{4x+6}{BD}[/tex]

sin ∠ADB = [tex]\frac{7x-12}{BD}[/tex]

because ∠BDC = ∠ADB => sin ∠BDC = sin ∠ADB

=> [tex]\frac{4x+6}{BD}=\frac{7x-12}{BD}[/tex]

=> 4x + 6 = 7x -12

<=> 3x = 18

<=> x = 6 => CB = 4.6 + 6 = 30

Step-by-step explanation:

Related Questions

Jodie bought a refrigerator on sale for 35% off the original price, for $97. What was the price of the refrigerator before the sale?
I need help

Answers

Answer:

$149

Step-by-step explanation:

As it is 35% off, $97 is therefore 65% of the full price [because 100 -35 = 65].

You can then divide 97 by 65 [1.49 to 2 d.p] to get 1% of the full price. 100% is the full price so we multiply 1.49 by 100 and the result of that is 149.

Gregory sees an $80.00 jacket on sale at 30% off. How much will it cost after a 7% sales tax is applied?

Answers

IT'S B

HOPE THIS HELPED MARK ME BRAINLIST PLS HAVE A NICE DAY

A tree initially measured 18 feet tall. Over the next 312 years, it grew to a final height of 3512 feet. During those 312 years, what was the average yearly growth rate of the height of the tree?

Answers

Answer:

Average growth= 11.20 feet

Step-by-step explanation:

First, we need to calculate the total growth during those 312 years:

Total growth= 3,512 - 18

Total growth= 3,494 feet

Now, the average growth:

Average growth= total growth / number of years

Average growth= 3,494 / 312

Average growth= 11.20 feet

whats the slope of this?

Answers

Answer: -3

Step-by-step explanation:

when this polynomial is divided by (m+1), the remainder is 0. What is the value of the polynomial’s constant term?

Answers

Answer: it would be -4

Step-by-step explanation:

I got it right one the mastery test

Answer: -4

Step-by-step explanation:

Can someone plz help me with this????

Answers

what information are you given??

Answer:

since we cant see what info is given maybe these tips can help...

the 'b' is also called the y-intercept, the y-int is what you start of with. Example, if your parents give you $20 and you spend $5 every week, your y-int is 20

The m is the slope, so if your parents give you $20 and you spend $5 every week, your slope is -5 because your money is decreasing at a linear rate

the x is the input, so if you want to know how much money you have 2 weeks after you got $20, you would substitute x with 2, and solve to get $10

Is correct that is rounded to 30 BRAINLY PLS HELP ME OUT I FORGIT HOW TO DO THIS ASP !PLS !

Answers

Answer:

No, it doesn't.

Step-by-step explanation:

Whenever there's a "th" at the end of a mathematical word, it means decimal place. A tenth is the first number in a decimal. Ex. (Underlined is the tenth) 1.27. If you round them to the tenth, you would get 20 and 30. Therefore 20 does not round to 30 if rounding to the tenths.

Answer:

It would actually be 20.

Step-by-step explanation:

When rounding to the nearest tenth, you need to pay attention to the second-to-last digit in the number. If the number is anything from 0 - 4 it rounds down. If the number is anything from 5 - 9, it rounds up.

Feel free to give brainliest.

Have an excellent day!

Explain why 20 is not a square number.

Answers

A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 20 is about 4.472. Thus, the square root of 20 is not an integer, and therefore 20 is not a square number.

The reason why 20 is not a square number is because it's square root is not an integer.

Why is 20 not a square number?

It follows from the task content that we explain why 20 is not a square number.

First, a square number is one whose square root is an integer. Hence, such a number is a perfect square.

On this note, 20 is not a square number because it's square root is not an integer.

Answers

Answer:

Step-by-step explanation:

g-(3,3)

h-(-5,3)

j- (5,-5)

Plz name me brainliest

Solve: -68.1 * 0.8
A) -54.48
B) 68.9
C) 54.48
D) -68.9

Answers

Answer:

A) - 54.48

Step-by-step explanation:

Just plug it into the calculator like this; (-68.1) x 0.8, which equals -54.48.

the answer is negative because you multiplied a positive # and a negative #.

If two pounds of steak will serve 5 people, how many
pounds will be needed to serve 13 people?

Answers

Answer:

5.2 pounds will be needed

Step-by-step explanation:

TEXAS INSTRUMENTS TI-30X IX

- calculator i used

Answer:

5.2 approximately 5 pounds of steak

Step-by-step explanation:

if 5 people : 2 pounds of steak

then 13 people : ?

if more , less divides

13/5×2

26/5

5.2

The regular price of a baseball hat is $14.45. If Carlos buys the baseball hat on sale for 20% off the regular price, how much change will he receive after paying with $20?

$_____

PLEASE HELP

Answers

14.45 times 0.20 = 2.89
14.45 - 2.89 = $11.56 after sale
$20 - $11.56 = $8.44 in change

Will give brainliest!

Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s)
Complete the inverse function for the function given below.
(1) = 21 - 4
() =
T +

Answers

Answer:

[tex]f^{-1}(x) = x/2 +2[/tex]

Step-by-step explanation:

let [tex]f^{-1} (x)[/tex] = y

then f(y) = x

2y-4 =x

2y =x+4

y= x/2 +2

hence f^{-1} (x) = x/2 +2

Hey everyone! What is -9.56 - (-1.235) = ?
Thanks!

Answers

Step-by-step explanation:

-9.56 - (-1.235)

=-9.56+1.235

=-8.325

2) Which of the following are opposite rays?
(picture attached)
A. JG and JN
B. JH and KJ
C. NJ and GJ

Answers

Answer:

A. JG and JN

Step-by-step explanation:

hope this helped :-)

At Pablo’s Pizza Pie, medium cheese pizzas cost $12.50, large cheese pizzas cost $15, and a 3-liter bottle of soda costs $2.50. Kevin purchased one bottle of soda and 5 pizzas for his party. If he spent exactly $70, what combination of medium and large pizzas did he purchase?

Answers

Answer:

3 medium and 2 large pizzas.

Step-by-step explanation:

70= 2.5+(12.50x+15y)

70-2.5=67.5

Possibilities

67.5=12.5(1)+15(4) FALSE(72.5)

67.5=12.5(4)+15(1) FALSE (65)

67.5=12.5(2)+15(3)FALSE(52.5)

67.5=12.5(3)+15(2)

TRUE (67.5)

If y is directly proportional with x and y=24 when x=6. What is the value of x when y=16

Answers

Answer:

x = 4

Step-by-step explanation:

Given y is directly proportional to x then the equation relating them is

y = kx ← k is the constant of proportion

To find k use the condition y = 24 when x = 6 , then

24 = 6k ( divide both sides by 6 )

4 = k

y = 4x ← equation of proportion

When y = 16, then

16 = 4x ( divide both sides by 4 )

4 = x

what is the value of x

Answers

Answer:

x=12

Step-by-step explanation:

substitute the number 12 with X

x=12 because it just does. hope you got it.

Find the A distance B between and .

Answers

Step-by-step explanation:

26 should be the answer

m: -1/2 Point: (-1, 3) Solve for y=mx+b
Help

Answers

Answer:

y= (-1/2)x+(5/2)

Step-by-step explanation:

equation point slope

(y-y1)=m(x-x1)

y-3 = -1/2(x+1) add -3 to both sides and distribute

y=( -x/2) +(-1/2)+3 rewrite 3 as 6/2

y=(-1/2)x +(-1+6/2) solve

y= (-1/2)x+(5/2)

Samir estimates the value of 3/5*16.1 which estimate is reasonable

Answers

Answer:

9.66

Step-by-step explanation:

Plz mark brainliest!!!

I need help ASAP
3k+30=95+k+2k-5

Answers

Answer:

Step-by-step explanation:

3k+30=95+k+2k-5

3k+30=100+3k

-30 -30

3k=70+3k

-3k -3k

k=70

Martha’s video game rental plan costs $18 per month .which table shows the sum of the amounts that Martha will pay for her video game rental plan over the next 5 months

Answers

Answer: not exactly sure what you meant but I don’t see a table so I’m guessing you should go for 90

Step-by-step explanation:

PLS help guys dont do it for the points and you have to find the sum

Answers

Answer:

12/15 or 4/5

Step-by-step explanation:

4+1+7=12

All three fractions have common denominator which is 15

Answer:Exact Form 4/5

Decimal form: 0.8

or it is 8/10, 12/15, 16,20, 20/25 and 24/30

Can someone please help me with my homework !!

Answers

The top left question is -1. The top middle question is -50. The top right question is 9. The bottom left question is -2x+23. The bottom middle question is 7x-28. The bottom right question is Option d or between -7 and -8:)

I have a test I'm doing and it makes no sense. Here are some of the questions, and thx for the other answer.
-12 = p - 7
-7b = -35
-5/8w = -9
9/25 = p/125
-3a +4 = -14

Answers

third one is 72/5
I did the reciprocal of -5/8 which is -8/5 to both sides. Multiply -9 and -8/5 to get 72/5

Find the limit !!!!!!

Answers

Answer:

1/8.

Step-by-step explanation:

Use l'Hopitals rule - we find the derivative of top and bottom of the fraction.

Derivative of the numerator = 0 - 1/2 (16 - x)^-1/2 -1

= 1 / [ 2 * (16 - x)^1/2

Derivative of the denominator = 1

When x approaches 0 this is 1 / (2*4)

= 1/8.

Another way to do this is to multiply top and bottom by 4 + (16 - x)^1/2

This becomes 16 - (16 - x) / x(4 + (16-x)^1/2)

= 1 / (4 + (16 + x)^1/2

When x ---> 0

this = 1 /(4 + 4)

= 1/8.

7/9 divided by 3/4 WITH A MODEL;)

Answers

That doesn't work.... they won't work.

PLSSSSS HELP (brainliest)
What is the slope of the line that contains these points? x 5 6 7 8 y -5 -6 -7 -8

Answers

Answer:

-6/5

Step-by-step explanation:

The formula for slope is [ y2-y1/x2-x1 ]. Use two of the given points to solve.

-6-6/-5-5

-12/-10

-6/5

Best of Luck!

Answer:

-1

Step-by-step explanation:

You have to divide with y being on top and x being on the bottom you then get -1

A mudslide left 42 acre-feet of mud in a valley. The mud is being
removed at the rate of 5 acre-feet per day.

Answers

Answer:

8.4 days

Step-by-step explanation:

I'm not sure what the question is, but if it's how many days it would take to remove all the mud, you divide 42 by 5 and get 8.4.

Other Questions

35/27 as a mixed number Learning can cause negative behaviors. How did Toussaint respond when Napoleons French government seemed headed towards reinstituting slavery? HELP PLEASE ANSWER ASAP!!!!!When atoms react, they often lose, gain, or share electrons to form a more stable version of themselves. For example, alkali metals such as sodium (Na) lose their outer shell electron in their reactions to form compounds. The electron configuration of alkali metals would then resemble those of which group of the periodic table in the compounds they form? a. 7A or group 17b. 8A or group 18c. 2A or group 2d. 1A or group 1 Who was our first sec. of treasury under President Washington?Who was our first sec. of state under President Washington? (c) What is the value of p if 4x + 20x + p is aperfect square describe a city in the german language Why do you think the quality of life does not have any absolute measurement yard stick? Explain with examples 2/v+1/w+1/2 solve for v What is the solution to this inequality?4x + 2 5 -14 or 3x-5 > 16OA.X3-4 or x>7OB.-45x8OD.x=-4 The following scale drawing was made for a home that is for sale. Use this information to answer the problem.A.)1 in. by 1.5 in.B.)36 in. by 54 in.C.)2 in. by 3 in.D.)18 in. by 27 in. Click below for question! THANKS FOR ALL YOUR HELP GUYS! Which equation is equivalent to 4 - 6(3 - 2x) = 3(x - 4)?a. 15x= -2 b. 5x=-10 c. 9x=2 d. 15x=2 DUE 10:00 PM HELP ASAP. When Sarah left your house this morning her cell phone was 80% charged and then it started to lose 8% charge for each hour there after write an equation for B in terms of tea representing the charge remaining in series battery as percentage tea hours after Sara left her house Hey can any of yall give me a short summary of the battle of hastings please? "21st century education is indispensable at present scenario of the world" elaborate your idea about the statement by comparing it with the conventional way of learning. [write at least 250 words] i will troll ur onlince class , give me information A. Write the spelling word that best completes each sentence.1. Be careful in the kitchen because theis hot.2. The windy storm hasaway my umbrella!3. I had aof energy and cleaned my room.4. Did the system restart andup yet?5. Myfollows me when the sun is out.6. I will be filled withwhen summer is over.7. The small boy could reach that shelf because it was8. The soccer player made aright before the buzzer.9. The rubberof my sneaker keeps me from slipping.10. There wason the bathroom ceiling from all the humid air. Fill in the blank with the correct conjugation of the verb in parentheses.Yo _____ (aprender) espaol.-aprendes-aprendo-aprende-aprendemos Examine the following situations. Decide whether the search violates the Fourth Amendment. Explain your decisions.A. The police see Dell standing at a bus stop in an area known for drug dealing. They stop and search him, finding drugs in his pocket.B.) After Brandon checks out of a hotel, the police ask the hotel manager to turn over the contents of the wastebasket, where they find notes planning a murder.C.)Jills ex-boyfriend breaks into her apartment and looks through her desk for love letters. Instead he finds drugs, which he gives to the police.