Mathematics High School

What errors did her coach make in the following example

Answers

Answer 1

Answer:

its the last one & the 3rd one.

hope that helps

Related Questions

Which expression is equivalent to 1/2b -15?

A. -1/2 (b + 30)

B. -1/2 (b - 30)

C. 1/2 (b - 30)

D. 1/2 (b + 30)

Answers

C

Using the distributive property, 1/2(b - 30) would end up being (1/2b) - ((1/2)30). 1/2 times 30 is 15. So 1/2b - 15.

The expression 1/2b -15 is equivalent to, 1/2(b-30), So option C is correct

What are expressions?

An expression is a sentence with at least two numbers or variables having mathematical operation. Math operations can be addition, subtraction, multiplication, division.

For example, 2x+3

Given that,

An expression, 1/2b -15

The expressions are equivalent = ?

So now, we can take 1/2 common from the expressions

⇒ 1/2b -15(2/2)

⇒ 1/2(b -15×2)

⇒ 1/2(b - 30)

Hence, the equivalent expression is, 1/2(b - 30)

To know more about Expressions check:

brainly.com/question/16804733

#SPJ1

the product of 9 and c

Answers

Answer:

The answer is 9c or 9 × c..

can someone solve this please , ill give Brainly to whoever is first :)

Answers

Answer:

630 in^2

Step-by-step explanation:

21 x 15 divided by 2 = 157.5

157.5 x 4 = 630

Answer:

Step-by-step explanation:

I person who answers this is right

Solve for the volume of the 3D shape.

27 m3

27

180 m3

180m

360 m3

360 m

Answers

Answer:

360 m3

Step-by-step explanation: just multiply 18m times 5m times 4 m then you get your answer :)

hope this helps :D

Answer:

360 m3

Step-by-step explanation:

Make the other guy brainlist cuz he helped me. :p

A blueprint for a new triangular playground shows that the sides
measure 480 ft, 140 ft, and 500 ft. Is the playground in the shape of
a right triangle? Explain.

Answers

Answer:

Step-by-step explanation:

because it is not equal numbers

Use the Distributive Property to find the product.

1 1/5x25=?

The product is .

Answers

Answer:

Step-by-step explanation:

you make 25 into its perfect square form and multiply

11÷5 x 5 x 5

1. 1 3/4 + 1/2 + 1/4 + 1/2
2. 5 5/8 - 2 6/7 - 2/7 -5/8
3. 9 5/6 + 1 1/4 + ___ = 14
Please answer these and help me!!!

Answers

yo mama is nice stay safe

Answer:

1. 3

2. 1 6/7

3.8 1/6

Step-by-step explanation:

hope this is correct:)

Part A: If PM =PN and MPQ=UNPQ which triangle congruency postulate can we
use to determine APMQ = APNQ given the information on the figure?
OSAS
O SSS
O AAS
O ASA
Part b:How did you determine your answer in part A/Question 2?

Answers

Answer:the answer for part A is SAS.

Step-by-step explanation:

We already know that side PQ is the same length for both the triangles. We were then given the information that sides PM and PN were equal. So now we already have two sides that are the same. Then we were given the information that angle MPQ and angle NPQ were also equal. So now we have two sides and an angle that are equal. This is how we got SAS (side angle side). I tried my best to explain. I added a photo so you could see what I was trying to explain. Hopefully this helped!

Just look at the picture please fast I WILL MAKE BRAINLIEST!!!!!!!!

Answers

Answer:

A (-3,0) B (0,-1) C (1,-4)

Step-by-step explanation:

Jan wants a bunch of balloons for her birthday party. There were 10 red, 12 blue, 13 green and 15 yellow balloons. What percentage is the blue balloons ?

Answers

Answer:

Should be 24%

Step-by-step explanation:

12/50= .24

The measures of the angles of a triangle are shown in the figure below.Solve for X

Answers

x=9, all angles will add up to 180. 180-63-38=79. 79=9x-2. 81=9x. divide by 9, x=9.

Determine if it’s relationship is a function.

Answers

Answer:

It is not a function

because: 4: 25 went to 4: 35

an input can not have two or more outputs

Step-by-step explanation:

Help needed ASAP, please!

Answers

Answer:

percent 60%

fraction 60/100

ratio 60:40

(dk if it is)

Answer: 60% fraction: 6/10 ratio: 6:10

Step-by-step explanation:

ILL GIVE BRAINLIEST FOR FIRST ANSWER HELP

What is the volume of this rectangular prism?

Answers

Answer:

The answer is 56 cm^3

Step-by-step explanation:

2 = height

7 = length

4 = width

Formula: LxWxH

2 x 7 x 4 = 56

A seventh-grade student wants to read at least 300 pages of a novel this week. He has already read 55 pages. An inequality that represents this situation is 7x+55≥300.

Solve this inequality for x, the number of pager per day.
Identify a number of pages that the student could read per day in order to have at least 300 pages of the novel read in a week.
Explain how you know that your answer is appropriate.
Enter your answer and your work or explanation in the space provided.

Answers

Answer:

x=35

Step-by-step explanation:

7x+55≥300

-55 -55

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

7x≥245

now divide both sides by 7

x=35

2.

Which equation best describes the graph??

y = 3x + 1
y = -3x + 1
y = -3x - 1
y = 3x - 1

Answers

Answer:

y = 3x + 1

Step-by-step explanation:

Subtract 1/2h - 1 from 3/4h + 4

A: -1/4h
B: 1/4h + 3
C: -1/4h + 5
D: 1/4h + 5

Answers

Answer:

option d.......................

Evaluate the expression for p = 9!

Answers

Answer:

362880

Step-by-step explanation:

P=3.14 and 3.14 times 9 equals 28.26

What is the value of Fraction 1 over 2 x3 + 3.4y when x = 3 and y = 4? (4 points)15.85 18.1 27.1 31.6

Answers

The correct answer is 27.1

Diane looked out the window in the store parking lot and said, “There are 13 motorcycles and cars in the lot.” Steve looked out the window and said, “I see 42 wheels.”

Question: How many motorcycles and how many cars are in the parking lot?

Answers

Answer:

There are 5 motorcycles and 8 cars in the parking lot.

Step-by-step explanation:

Set variables X to represent the number of cars and Y to represent the number of motorcycles. You will get the following equations:

X + Y = 13 (Total number of motorcycles and cars)

4X + 2Y = 42 (Total number of wheels)

Combine the two equations together and solve for Y and X

4(13 - Y) + 2Y = 42 note: X = 13 - Y

52 - 4Y + 2Y = 42

-2Y = -10

Y = 5

X + 5 = 13

X = 8

solve this system of equations by using the elimination method.

2x-3y=25
5x+3y=10

Answers

Elimination method is my favorite way to solve 2 equations like this written in standard form! First I'm going to rewrite the equations and mark numbers to make this explanation more clear.

2x-3y=251️⃣

5x+3y=102️⃣

Looking at these 2 equations we can see that there is a +3 and a -3. This could be eliminated by adding the 2 equations together! *Remember what is on the left side adds with the left side, and what's on the right side adds with the right side. Therefore we can do:

1️⃣+2️⃣

2x-3y+5x+3y=25+10

7x=35

x=5

Then we can substitute the value of x back into either of the 2 equations.

2*5-3y=25

10-3y=25

3y=-15

y=-5

Then write the 2 answers together.

{x=5

{

{y=-5

Now we can check our answers.

2*5-3*-5=10- -15= 10+15=25 Correct

5*5+3*-5= 25+ -15= 10 Correct

From this we can see that x=5 y= - 5 are the correct answers!

14 =2b HELP ME PLEASE

Answers

Answer:

The answer is b = 7

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

~Hoped this helped~

Divide 2b by 2 to get b. Then divide 14 by 2 to get 7. b=7

What is the slope between:
(2,5) (4, 13)

Answers

Answer:

m = 4

you can find the answer for this on m a t h w a y (without the spaces)

I hope this helps!

Answer:

Step-by-step explanation:

slope = y2-y1 / x2-x1

13-5= 8

4-2=2

8/2= 4

Debra made $228 for 12 hours of work.
At the same rate, how many hours would she have to work to make $323?

Answers

Answer:

17 hours

Step-by-step explanation:

Set up a proportion: [tex]\frac{12}{228} = \frac{x}{323}[/tex] Cross multiply, then divide: 12 × 323 = 3876, 3876 ÷ 228 = 17So, she would have to work 17 hours to make $323.

I hope this helps!

Write two expressions which are equivalent to 24x + 8.

Answers

[tex]8(3x + 1)[/tex]

Factor out 8 from the expression

Find the 9th term of the geometric sequence 6, -24, 96,

Answers

Step-by-step explanation:

the process is show in the above picture.

Solve for y when f(x)=2x^4-5

Answers

if you are looking for the y intercept it is (0,-5) or -5

Laila and Young each made a model volcano. Laila's volcano weighs 3 times as much as Young's. Laila's volcano weighs 9 pounds.
How much does Young's volcano weigh?
A3 pounds
B. 6 pounds
c 12 pounds
D. 18 pounds
E 27 pounds

Answers

Answer:

Step-by-step explanation:

The answer to this question is A

4. What is the axis of symmetry for h(x) = 19(x – 5)^2 + 6

Answers

Answer:

x = 5

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

(h, k ) are the coordinates of the vertex and a is a multiplier

h(x) = 19(x - 5)² + 6 ← is in vertex form

with vertex (h, k ) = (5, 6 )

The axis of symmetry is a vertical line passing through the vertex

with equation x = 5

Will Mark brainliest if answer both correctly / What is X= ? / conditional statement

Answers

The answer is for 1st question is “10.4” and for the second question “non of these choices are correct”.

Explanation:

For the 1st question:

tan = opposite / adjacent

tan 30 = x / 18

18 tan 30 = x

x = 10.4

For the 2nd question,
If a triangle as an angle of 90 degree, it is 100% a right triangle.

Hope it helps :), mark me brainliest please!

Other Questions

On a number line, point D is at -3, and point E Is at 6. The point F lies on DE. The ratio of Df to FE ls 2:3. Where does point F lie on thenumber line?Point F is at. All rights reserved.on the number line.Helppp me please What term is used to refer to crimes committed by individuals in the course of their daily business activities QuestionDespite its bureaucratic function, the courthouse was much loved by the townspeople: all agreed that it wasa beautiful example of early twentieth-century architecture.A-Townspeople; all agreedB-townspeople all agreedC-townspeople and all agreeingD-townspeople, they were all agreed How was the surplus created? how was it sustained? industrial revolution Both chorionic villus sampling and amniocentesis collect fetal cell samples from the pregnant mother. However, during _____, a needle is passed through the abdomen and uterine walls to collect the samples; and during _____, a suction tube is inserted through the vagina into the uterus to collect the samples. _________ is a set of rules governing behavior in a society. It is influenced by morals, values, and religious beliefs. Which term represents a set of tasks or activities that produce desired outcomes? a. business process b. trigger c. outcome d. enterprise resource planning e. none of the above Needs are essentially ________ that we become consciously aware of and channel toward particular goals and associated behaviors. 4. Read the question.Did you put the key in your pocket?What kind of question is this?O a fact questionO an unanswerable questionO an open-ended questiona closed question In the late nineteenth century, many cities cut death rates from typhoid, yellow fever, and cholera by instituting what? Write a speech you would give to the people in your community about how to keep the environment clean If business planning predicts that your gross margins will be small, you would be best advised to:______ A company has an overhead application rate of 125% of direct labor costs. How much overhead would be allocated to a job if it required direct labor costing $20,000 Practice with Laws of LogicProvide the valid conclusion to the argument below.If I am sick, then I will not come to school.If I do not come to school, then I am sad. Which practice was the top priority for New England settlers during the early colonial era? Why did religious persecutions have a negative effect on society? Esmeralda promises to pay fiorello $400 because ""he does not have as much money as other people. "" esmeraldas promise is not enforceable because. please help me !! due today:( What's one of the billing steps taken by the pharmacist in an outpatient pharmacy ? a ) The prescription data , which includes the patient's insurance information , is entered into the pharmacy's software management system . b ) The pharmacy will notify the prescribing physician who will then bill the insurance company for the service and for the medication he or she prescribed on behalf of the pharmacy . Oc ) The patient will pay out of pocket and the pharmacist will give the patient a compensation letter which will allow him or ber to be reimbursed by the insurance company . d ) The pharmacist will telephonically submit the claim to the insurance company . In addition to immigration, what is another factor that has changed American identify?The concept of American identity has changed over time. When the colonists came to the New World from Europe, they began writing letters, essays, and articles that documented their daily experiences and hardships. Major events in US history have also had significant effects on American literature. For example, when slavery and the subsequent civil rights movement were pressing issues in society, many people wrote passionate letters, essays, poems, and biographies that expanded upon all sides of the topic.A) The concept of American identity has changed over time.B) When the colonists came to the New World from Europe, they began writing letters, essays, and articles that documented their daily experiences and hardshipsC) For example, when slavery and the subsequent civil rights movement were pressing issues in society, many people wrote passionate letters, essays, poems, and biographies that expanded upon all sides of the topic.