Mathematics High School

help please asap I NEED THE WORKING TOO!!!!!!!​

Answers

Answer 1

Answer:

9/7 =a

Step-by-step explanation:

9 / -a + 15 = 8

Subtract 15 from each side

9 / -a + 15 -15 = 8-15

9 / -a = -7

Multiply each side by -a

9/-a * -a = -7 * -a

9 =7a

Divide each side by 7

9/7 = 7a/7

9/7 =a

Answer 2

Answer:

9 / 7 = a

Step-by-step explanation:

9 / - a + 15 = 8

Determined the defined range

9 / ( - a ) + 15 = 8 , a ≠ 0

subtract 15 from each side

9 / - a + 15 - 15 = 8 - 15

calculate the difference

9 / - a = - 7

multiply both side of equation by - a

9 / - a × - a = - 7 × - a

9 = 7 a

divide each side by of equation by 7

9 / 7 = 7 a / 7

9 / 7 = a

Related Questions

Match each equation with the correct number of solutions

Answers

The first one is no solution
The second one is infinite solutions
The third one is one solution

Hope this helps ;)

8 of 8
Work out the mean for the data set
below:
2.3, 0.3, 7,6.1, 9.7
Give your answer as a decimal.

Answers

Answer:

Mean = 5.08

Step-by-step explanation:

The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.

[tex] \frac{2.3 + 0.3 + 7 + 6.1 + 9.7}{5} [/tex]

[tex] = \frac{25.4}{5} [/tex]

= 5.08

Select the two values of x that are roots of this equation

Answers

Answer:

c

Step-by-step explanation:

There are two answers to the question...

Answer:

B and C

The ages, in years, of employees at a fabric store are represented by the box-and-whisker plot shown.

Answers

Answer:

There isn't a plot.

Step-by-step explanation:

Tell whether the sequence is arithmetic. If it is, what is the common difference? -21, -15, -9, -3,

Answers

Answer:

it is arithmetic and the difference is 6

Does anyone know how to solve this?

Answers

Given :

A right angle triangle ABC .

To Find :

The perimeter of ABC .

Solution :

Since, triangle ABC is right angled and angle ∠ABC is 46° .

So, AC = AB cos 46° = 7.64 units.

Also, CB = AB sin 46° = 7.91 units.

Therefore, the perimeter of ΔABC is :

P = 11 + 7.64 + 7.91 units

P = 26.55 units

Hence, this is the required solution.

Factor completely 18x2 − 21x −15. 3(2x + 1)(3x − 5) 3(2x − 5)(3x + 1) 3(2x − 1)(3x + 5) 3(6x + 1)(x − 5)

Answers

Answer:

3(2x + 1)(3x - 5)

Step-by-step explanation:

Given

18x² - 21x - 15 ← factor out 3 from each term

= 3(6x² - 7x - 5 ) ← factor the quadratic

Consider the factors of the product of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 6 × - 5 = - 30 and sum = - 7

The factors are + 3 and - 10

Use these factors to split the x- term

6x² + 3x - 10x - 5 ( factor the first/second and third/fourth terms )

3x(2x + 1) - 5(2x + 1) ← factor out (2x + 1) from each term

(2x + 1)(3x - 5)

Then

18x² - 21x - 15 = 3(2x + 1)(3x - 5)

Answer:

A

Step-by-step explanation:

Consider this equation
3x+ 1=2x-5

Answers

Answer: x=-6

Step-by-step explanation:

Add 5 to both sides to get 2x by itself

Yes, subtract 1 from both sides to get 3x by itself so you can subtract 2x as to not get a negative x value

One common mistake would be to accidentaly adding or subtracting 1 or 5 when they are supposed to be added/subtracted. To avoid this just go back and check your awnser by plugging it in.

Translate the sentence into an equation. Twice the difference of a number and 6 is 2.

Answers

Step-by-step explanation:

2(x-2)=6, x-2=3, x=5

.......................

help me solve this question !

Answers

Answer:

The answer is

(x-5)(x+5)

Write an equation of the line that passes
through (0, – 5) and is perpendicular to
the line y= - 4/5x

Answers

Answer:

[tex]y = \frac{5}{4} x - 5[/tex]

A 9-pack of sponges costs $4.68. What is the unit price?

Answers

Answer:

You can do 4.68/9.

One pack of sponges costs $0.52 cents

Answer: $0.52

Step-by-step explanation: You divide 4.68 by 9 for the unit price

Solve the equation for X. Show all work.
6(-3x - 4) = - 18x + 24

Answers

-12x - 24 = -18x + 24
+24. +24
-12x = -18x + 48
+18x. +18x
6x = 48
/6. /6
X = 8

PLEASE HELP ME WHAT IS THE ANWSER

Answers

Answer:

c is the same angle as a

b and d are the same as the other

and together the are what's left from 360° after a and c got their share

so

360 -98 -98 = b + d

makes

164 = b + d

since they are of equal value, just decide 164 by 2 and you got b and d at once

pls brainliest

Answer:

Vertical Angles: a and c , d and b

m<b= 82⁰ , m<c=98⁰ , m<d=82⁰

Adjacent Angles: a and b , b and c , c and d ,d and a

correct me if im wrong

what are the answer to this question

Answers

Answer: t=-3h+25

Step-by-step explanation:

t=-3h+25

25 degrees is a constant-- it never changes, no matter how many hours goes by. So, you don't multiply a variable with it.

The temperature drops every 3 hours-- this is not constant, since it's dependent on the number of hours that passes. So, use a variable here. Since the temperature drops every three hours, it's -3, and not 3.

Answer:

[tex]t=-3h+25[/tex]

Step-by-step explanation:

If we know that when [tex]h=0[/tex], [tex]t=25[/tex], then we can use a direct proportion equation ([tex]x=ky[/tex]). The temperature decreases every hour by 3 degrees. However, we know that before any temperature drop, the temperature was 25 degrees. All together, this gives us [tex]t=-3h+25[/tex], where [tex]-3h[/tex] is the temperature drop each hour, and [tex]25[/tex] is the starting temperature. Hope that explained things :)

Can someone help me with this math problem ?? Pls it’s for my final !
-
A 525ft cable runs from the top of an antena to the ground. The angle of elevation made by the ground to the top of an antena 25°
How tall is the antena ??

Answers

Answer:

221.87 feet

Step-by-step explanation:

Given that,

A 525 ft cable runs from the top of an antenna to the ground.

The angle of elevation made by the ground to the top of an antena 25°

We need to find the height of the antenna.

Using trigonometry,

Hypotenuse, H = 525 ft

θ = 25°

So,

[tex]\sin\theta=\dfrac{P}{H}\\\\P=H\sin\theta\\\\P=525\times \sin(25)\\\\P=221.87\ ft[/tex]

So, the height of the antenna is equal to 221.87 feet.

Can someone please help me with this?

Answers

Answer:

y = x

Step-by-step explanation:

i took two points which are very close to the trend line - (3,3) and (5,5) - to get the slope

the slope is 2/2 or 1 and the y-intercept is zero

this means the trend line is 'y = x'

Help me please!!! I really need it!

Answers

Answer: The value of x can be either 5 or 10.

Step-by-step explanation:

We are given:

Total profit, P = $5600

The given equation follows:

⇒ P = 600 + 1500x - 100x²

Putting value of P in above equation, we get:

⇒ -100x² + 1500x + 600 = 5600

⇒ -100x² + 1500x - 5000 = 0

⇒ 100x² - 1500x + 5000 = 0

Solving this equation by middle term split, we get:

⇒ 100(x² - 15x + 50) = 0

⇒ (x² - 10x - 5x + 50) = 0

⇒ x(x - 10) - 5(x -10) = 0

⇒ (x - 10)(x - 5) = 0

⇒ x = 10, 5

Hence, the value of x can be either 5 or 10.




For each 7 mm of coloured fabric Gavyn uses to make his curtains, he also uses 1 cm of white
fabric. Express the amount of white fabric to coloured fabric as a ratio in its simplest form.

Answers

Answer:

7mm:10mm

Step-by-step explanation:

1cm =10mm

so 7:10

What is the answer for K ?

Answers

10/3 = k/9

10 x 9 = 3 x k

90 = 3 k

k = 90/3

k = 30

you need to do a cross multiple first and then we’ll get 3K=90 so they just want K so 90/3 and the answer is 30

A student must study for 20 to 30 hours a week to maintain their grade point average. If the
student wants to study daily, how many hours per day is this (in interval notation)?
0 (20,30)
[20/7,30/7]
[13,23]
[27,37]

Answers

The answer would be [20/7,30/7]

That gives you an idea of how long each day the student must study in order to maintain their GPA

How can you apply the concept of area and perimeter in your everyday life?

Answers

you can use area to find out how much space is in your room and to find out how big furniture is the perimeter can help with lining up the space between them

Place these lengths in order of size with the smallest first:
4.5m, 4.93cm, 475.9mm, 47.3m

Answers

Answer:

4.93 cm 475.9 mm 4.5 m 47.3 m

Step-by-step explanation:

mmmmmmmmmmmmmmmmmmmmmmm

Marking brainliest

I’m getting a belly piercing soon and this guy asked this question but I’m not sure what he means? Someone help

Answers

Answer:

navel piercing.

Or

belly button piercing

Or

an umbilical dip piercing

Please help me out!!

Answers

Answer:

456

Step-by-step explanation:...

Martha’s biweekly gross pay is $1,000. Her deductions make up 23% of her gross pay. How much is deducted from her pay for a full calendar year?
$4,600
$5,980
$7,020
$9,420
ALL GIVE BRAINLY

Answers

Answer:

$5,980

Step-by-step explanation:

23% of $1,000 = $230

so, Martha's deductions for a full calendar year =

52/2 × $230 = $5,980

write an equation then find the angle measure for A. 25 points and brainliest.

Answers

Answer:

A

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 angles and equate to 180

4 + 3x + 3x + 14 + 90 = 180 , simplify left side

108 + 6x = 180 ( subtract 108 from both sides )

6x = 72 ( divide both sides by 6 )

x = 12

Then

∠ A = 4 + 3x = 4 + 3(12) = 4 + 36 = 40° → A

please help asap! i will mark brainliest!!!!!!

Answers

Answer:

it is A

Step-by-step explanation:

A is the answer, your welcome!

These are the means and standard deviations for samples of prices from two different brands of shoes. Brand A Brand B Mean: $50 Mean: $40 Standard deviation: $5 Standard deviation: $8

Select the two true statements.

A. Brand A has a higher average price than brand B.

B. Brand A has a lower average price than brand B.

C. Brand A's prices are less spread out than brand B's prices.

D Brand A's prices are more enread out than brad pie​

Answers

Answer:

A and C

Step-by-step explanation:

just took the test

Help
Asap please!!!!

Answers

Answer:

The slope is 3/4

Step-by-step explanation: slope= rise/run. from point (-2,0) to point (2,3), it rises 3 units and runs 4 units to the right. :)

Other Questions
What are the benefits of vaccination for women and men? por or para please answer correctly Question: Describe in five or more complete Spanish sentences using informal commands what a newly licensed friend should and should not do to be a safe driver on the road? what happens right after a war ? Any help 70 pointsWhen the quantity that consumers are willing and able to buy equals the quantity that producers are willing and able to sell. Graphically, it is the point at which the two curves intersect. Solve the equation for X. Show all work. 6(-3x - 4) = - 18x + 24 Read the information. Pick 5 of the most important ideas/facts from the information and bullet point them.1. We are all born free and equal. We all have our own thoughts and ideas.2. These rights belong to everybody, whatever our differences.3. We all have the right to life, and to live in freedom and safety.4. Nobody has any right to make us a slave. We cannot make anyone else our slave.5. Nobody has any right to hurt or torture us or treat us cruelly.6. Everyone has the right to be protected by the law.7. The law is the same for everyone. It must treat us all fairly.8. We can all ask for the law to help us when we are not treated fairly.9. Nobody has the right to put us in prison without a good reason.10. If we are put on trial, this should be in public.11. Nobody should be blamed for doing something until it has been proved.12. Nobody has the right to come into our home, open our letters, without a good reason.13. We all have the right to go where we want to in our own country and to travel abroad as we wish.14. If we are frightened of being badly treated in our own country, we all have the right to run away to another country to be safe.15. We all have the right to belong to a country.16. Every grown up has the right to marry and have a family if they want to.17. Everyone has the right to own things or share them.18. We all have the right to believe in what we want to believe, to have a religion, or to change it if we wish.19. We all have the right to make up our own minds and to share our ideas with other people.20. We all have the right to meet our friends and to work together in peace to defend our rights.21. We all have the right to take part in the government of our country e.g. vote.22. We all have the right to a home, enough money to live on and medical help if we are ill.23. Every grown up has the right to a job, to a fair wage for their work, and to join a trade union.24. We all have the right to rest from work and to relax.25. We all have the right to enough food, clothing, housing and health care.26. We all have the right to education.27. We all have the right to our own way of life.28. There must be proper order so we can all enjoy rights and freedoms in our own country and all over the world.29. We have a duty to other people, and we should protect their rights and freedoms.30. Nobody can take away these rights and freedoms from us.I just don't understand anything on here Why was the Battle of Coral Sea a victory for the United States? What is the best definition of persona PLEASE HELP ME WHAT IS THE ANWSER I wanna read the manga series Chainsaw Man anyone read it before? is it good? any spam or irrelevant answers gets reported. How did Alexander the Great become a pharaoh of Egypt ? what is method of magnetic separation which of the following is the equation of a line that would be perpendicular to the line whose equation is y=2x-5? helppp they're for finalsA. y=-2x+4B. y=-1/2x+4C. y=2x+4D. y=-1/2x+4 Hoi nghi ban chap hanh trung uong dang dang cong san dong duong 11-1939 xac dinh nhiem vu truoc mat cua cach mang dong duong la please help need to solve this fastt what are the answer to this question Which of the following motivated the 15th-century European monarchsto find a sea route to East Asia?A~The desire of learn native languagesB~The desire to adopt new religions and traditionsC~To create a new market for European productsD~To eliminate the high cost of trading with Italian merchants Can someone help me with this math problem ?? Pls its for my final ! -A 525ft cable runs from the top of an antena to the ground. The angle of elevation made by the ground to the top of an antena 25 How tall is the antena ?? Joe and Marty work for two different landscaping companies. Joe earns a base amount of $15 and $8 per lawn. Marty earns a base amount of $45 and $6 per lawn. Last week, they earned the same amount of money. How many lawns did they each mow?