Mathematics High School

can someone solve -15 = - 7a - 4 - 4a

and m - 4m = -6

and 8v - 3 + 3v = 8

STEP BY STEP PLEASE.

Answers

Answer 1

Answer:

A=1, m=2, v=1

Step-by-step explanation:

A.

[tex]-15=-7a-4-4a\\\\-15+4=-11a-4+4\\\\-11=-11a\\\\a=1[/tex]

B.

[tex]m-4m=-6\\\\\\-3m=-6\\\\\\3m=6\\\\m=2[/tex]

C.

[tex]8v-3+3v=8\\\\11v-3=8\\\\11v-3+3=8+3\\\\11v=11\\\\v=1[/tex]

For A, I first subtracted -4 from -7 as their variables are the same. I cannot subtract integers from variables. Then, I added 4 on both sides to move the integer on the left side. (This would also remove the -4 on the right side because -4+4=0) Then I divided -11 by both sides to get 1a or a.

For B, I  subtracted -4 from 1 as their variables are the same. This time, since they are both negative numbers, I can make them both positive. So, just divide 3 by both sides as we want to get 1m.

For C, Add 3 to 8 as v is their variable. Then, I added 3 to both sides because we want to get the variable on one side. Divide by 11 and you will get v=1.

Related Questions

What is gross income? Gross income is money earned before taxes are taken from a paycheck. Gross income is money earned after taxes are taken from a paycheck. Gross income is money paid to fund firefighters and police officers. Gross income is money paid for taxes.

Answers

Answer:

Gross income is money earned before taxes are taken from a paycheck

Step-by-step explanation:

Gross income is money earned before taxes are taken from a paycheck

Gross income refers to the total amount of money earned by an individual over a specific period of time usually a year before any deductions such as taxes is made.

Gross income includes income earned from all sources. It can also be called Gross pay on a paycheck.

For example, if an individual earns $100 in a year and is expected to pay a tax of 2%. The gross income is $100 before tax is deducted


write each percent as a fraction in simplest form
60%​

Answers

Answer: 3/5 i hope this helps god bless

Step-by-step explanation:

How do You get the range in a quadratic

Answers

Answer:

You find all the numbers the y value can be

Step-by-step explanation:

The range is all the possible y values, alot of the times it's going to be infinite

If a baseball travels at 90 mi/h, how many seconds does it take to travel 60 ft.?

Answers

Answer:

0.458 seconds

Step-by-step explanation:

dont get mad when its wrong

0.458 seconds

You already know that the ball travels at 90 mi/hr. 60.5 1/475200 = 0.00012732 hours. This is still a small number so express it in seconds. 0.0076389 minutes = 60 0.0076389 = 0.458 seconds. (this from google btw)

What is the Y-intercept of the graph of the linear function? What is the slope?

Answers

Answer:

The Y intercept is -5 and the slope is -5/2

a sphere has a radius r=12 inches. What is it’s approximate volume

Answers

Answer: 7238.28

Step-by-step explanation:

The test scores for 15 students are 72, 74, 74, 79, 82, 82, 82, 82, 86, 86, 86, 87, 87, 89, and 92. Find the mean of the data. Round your answer to two decimal places.

Answers

76.53 i’m pretty sure.

Answer:

82.67

Step-by-step explanation:

1240 divided by 15 = 82.66667

Plz if u would mark me as brainlest!

Which number line shows the points −125 and –2.8?

Answers

You didn’t send a picture so we can’t tell

Would you need circumference or area to find the amount of oil it takes to cover the bottom of a frying pan?

Answers

Answer:

circumference

Step-by-step explanation:

A major arc will have a measure that is
A. less than 180°
B. equal to 180°
C. greater than 180°​

Answers

I think it’s C. Greater than 180 I’m not sure though don’t get mad if I’m wrong

9514 1404 393

Answer:

  C.  greater than 180°

Step-by-step explanation:

Arcs are classified as "major" or "minor" depending on whether they are more or less than half a circle. A major arc is more than half a circle so is greater than 180°.

I need help for this question ASAP

Answers

Use the Pythagorean Theorem:
Formula is a^2+b^2=c^2 so
x^2+(15)^2=(17)^2
x^2+225=289
x^2=64
x=8

We know x is 8 so add them all together
8+15+17=40

perimeter=40

the order of the surd 6 √2187 after simplification is​

Answers

Answer:

[tex]n = 162[/tex]

Step-by-step explanation:

Given

[tex]6\sqrt{2187[/tex]

Required

Determine the order of the surd

If a surd is represented as [tex]n\sqrt{r[/tex], then the order of the surd is [tex]n[/tex]

[tex]6\sqrt{2187[/tex]

Express 2187 as [tex]3^6 * 3[/tex]

[tex]6\sqrt{2187} = 6\sqrt{3^6 * 3}[/tex]

Split the surd

[tex]6\sqrt{2187} = 6\sqrt{3^6} * \sqrt{3}[/tex]

Apply the following law of indices:

[tex]\sqrt{a} = a^{\frac{1}{2}}[/tex]

The expression becomes:

[tex]6\sqrt{2187} = 6 * 3^{\frac{6}{2}} * \sqrt{3}[/tex]

[tex]6\sqrt{2187} = 6 * 3^{3} * \sqrt{3}[/tex]

[tex]6\sqrt{2187} = 6 * 27 * \sqrt{3}[/tex]

[tex]6\sqrt{2187} = 162 * \sqrt{3}[/tex]

[tex]6\sqrt{2187} = 162 \sqrt{3}[/tex]

By comparing [tex]162 \sqrt{3}[/tex] to [tex]n\sqrt{r[/tex], we can say that:

[tex]n = 162[/tex]

[tex]r = 3[/tex]

Conclusively, the order of the surd is 162

plz help i will mark you brainlist this is due in 5 minutes

Answers

Answer: ion know help ur self

Step-by-step explanation:

Helpppppppppppppppppppppppppppppppppppppp

Answers

Answer:

A.) Point A is closer to the surface of the sea than point B

Step-by-step explanation:

-7/3 = -14/6

-5/2 = -15/6

Point A is closer to the surface of the sea than point B.

help a girl out plz!! im confused

Answers

Answer:

30

Step-by-step explanation:

distribute the 5 to z and 4 --> 5z + 20

same with 5 to the 2 and -z --> 10-5z

5z + 20 + 10 - 5z = ? combind like terms

the z cancle out leaving 20 + 10 = ?

Answer:

20z-10z

Step-by-step explanation:

Distribute the 5 to both z and 4 which would make it 20z

Distribute the 5 to the 2 and -z which gives you 10z

Put them together and you get the answer

Select the correct answer.
Which equation represents the vertical line passing through (1,-9)?
A.
x = -9
B.
x = 1
C.
y = -9
D.
y = 1

Answers

Answer:

x=1

Step-by-step explanation:

X=1


Step-by step explanation

Building A is 400 feet tall and Building B is 300 feet tall. Johnny is standing in between the two building. The angle of elevation from the point on the ground where Johnny is standing is 70 degrees to the top of Building A and 52 degrees to the top of Building B. How far apart are the two buildings

Answers

Answer:

389 feets apart

Step-by-step explanation:

Given that:

Building A

Height = 400feets

Angle of elevation = 70°

Building B:

Height = 300 feets

Angle of elevation = 52°

Distance from the foot of building A to where Jonny is standing = x (see attached picture)

Using trigonometry :

Tanθ = opposite / Adjacent

Tan 70 = 400/ x

2.7474774x = 400

x = 145.58809 feets

Distance from the foot of building B to where Jonny is standing = y (see attached picture)

Using trigonometry :

Tanθ = opposite / Adjacent

Tan 52 = 300/ y

1.2799416y = 300

y = 145.59

y = 234.38568 feets

x + y = distance between the two buildings

(145.58809 + 234.38568) feets

= 379.97377

= 380 feets apart

What is the value of x^2 - 3y + 5x + 2 whenx = 7 and y = 4?

Answers

Answer:

74

Step-by-step explanation:

[tex]x^2 - 3y + 5x + 2 \\ \\ = {7}^{2} - 3(4) + 5(7) + 2 \\ \\ = 49 - 12 + 35 + 2 \\ \\ = 74[/tex]

is this table a function? why or why not?

Answers

No. There has to be only one output for each input. Because the number two is an input twice and has two different outputs, this can not be a function
no because 2 has two different inputs

How to do this question plz answer me ​

Answers

Answer:

140

Step-by-step explanation:

We first find out how much degrees altogether in the pentagon so we do

S = (n-2) x 180

s is the sum in the shape

n is the number of sides

S = (5-2) x 180

S = 3 x 180

S =540

Now that we have the sum we can add all the sides, first lets make the side ABC = x and side BCD = 2x:

115 + 125 + 90 + x + 2x = 540

330 + 3x = 540

3x = 540 - 330

3x = 210

x = 70

Now that we know x = 70 we can find side BCD, it says its is 2 x angle ABC

so we do 2x70 = 140

so Angle BCD = 140

I hope i did this correctly.

Select the correct answer.
Which function has the same zeros as g(x) = -x3 + x2 + 12x?
ОА. .
y
-30
-20
10
1-10
-8
-6
-4
-2
6
8
10
-10
20

Answers

Answer: -30

Step-by-step explanation:

-30 bc it has the same functions.

Answer:

points -3,0,4 on a graph

Step-by-step explanation:

correct on edmentum or plato

In ΔIJK, ∠K ≅∠J, IJ = 9 and JK = 10. Find the length of KI.

Answers

Answer:

KI = 9

Step-by-step explanation:

In ΔIJK,

∠K ≅∠J (given)

Therefore,

IJ ≅ KI (sides opposite to equal angles are equal)

Since,

IJ = 9

So,

KI = 9

A line passes through the points (-8,-4) and has a slope of 5/4.​

Answers

The answer is y=5/4x+6

finish the table and write the equation​

Answers

Answer:

29

Step-by-step explanation:

Each number has 4 in difference

Answer:

29

Step-by-step explanation:

25+4=29

What’s the slope and y intercept of (3,4) and (0,-3)

Answers

Slope is 7/3 and y intercept is -3.

Slope: 7/3

Y intercept: -3

Please answer correctly !!!!!!!!!!!!! Will mark Brianliest pleaseeeee !!!!!!

Answers

Answer:

2sqrt(10)

Step-by-step explanation:

Use the Pythagorean theorem.

x^2 + 3^2 = 7^2

x^2 + 9 = 49

x^2 = 40

x = sqrt(40)

x = 2sqrt(10)

Determine which of the lines, if any, are parallel or perpendicular. Explain.

Line A: 4x-3y=2
Line B: y=4/3x+2
Line C: 4y+3x=4

Answers

line A. line B. line C. it’s A

At an aquarium, the admission price is $11.50 for an adult and $5.25 for a child. The owner of the aquarium wants to make at least $800 on a Saturday. Let x be the number of adult visitors and y be the number of child visitors. Select the inequality that shows the numbers of visitors that need to enter the aquarium.

Answers

what inequalities can u show them

give your answer as either an improper fraction or mixed number​

Answers

Answer:

1 1/10

Step-by-step explanation:

2 1/5= 2 2/10

33/10- 22/10= 11/10 or 1 1/10 or 1.1

BTW you can use google!

11/10 and i dunno what the mixed number is sorry

A 12 cm by 20 cm painting hangs in a museum. The museum curator wants to hang other paintings in the gallery that are proportional in size. The dimensions of several paintings are shown. Which paintings' dimensions are proportional to the original painting? Select all that apply. A. 1.5 cm by 2.5 cm B. 27 cm by 45 cm C. 9 cm by 15 cm D. 30 cm by 50 cm E. 6 cm by 14 cm

Answers

Answer:

A. 1.5 cm by 2.5 cm

B. 27 cm by 45 cm

C. 9 cm by 15 cm

D. 30 cm by 50 cm

Step-by-step explanation:

The dimensions of the original painting = 12 cm by 20 cm painting

Hence, the proportion is:

12/20 = 0.6

Hence, we compare the options given in the question.

A. 1.5 cm by 2.5 cm

= 1.5/2.5 = 0.6 , option A is correct

B. 27 cm by 45 cm

27cm/45 cm = 0.6 Option B is correct

C. 9 cm by 15 cm

9cm/15cm = 0.6 , Option C is correct

D. 30 cm by 50 cm

30 cm /50 cm = 0.6 Option D is correct

E. 6 cm by 14 cm

6cm/14 cm = 0.4285714286

Option E is not correct

Therefore, Options A to D are the correct options

Other Questions
This table shows the descriptions of careers of three individuals.IndividualCareer DescriptionsDerekDrives a mobile running store in a van that sells racing gear to runners at running events, such as marathonsTaylorStands by the entrance and exit of a retail shoe store and collects money for the merchandise that customers are buyingRashidaOversees that the aquariums for a fish tank store are made, stored, and transported according to scheduleWhich best describes the career each individual has?Derek is a Driver/Sales Worker, Taylor is a Customer Service Representative, and Rashida is a Supply Chain Manager.Derek is an Entrepreneur, Taylor is a Cashier, and Rashida is a Survey Researcher.Derek is an Entrepreneur, Taylor is a Customer Service Representative, and Rashida is a Survey Researcher.Derek is a Driver/Sales Worker, Taylor is a Cashier, and Rashida is a Supply Chain Manager. Read the passage.What did the president mean when he said he had to face very difficult choices when creating a federal budget?deciding which country to borrow from to finance spendingdeciding what would be funded and what would be cutdeciding how to keep interest rates low on the national debtdeciding how much to increase tax rates group of elected officials that represented the needs of the common people of rome in the republic government Which fraction is equivalent to 0.4?StartFraction 4 over 100 EndFractionOne-fourthFour-tenthsStartFraction 4 over 1 EndFraction what is the right answer? how does gawain show loyalty to the king in sir gawain and the green knight?? Eight children sit together at story time. Seven children sit in a circle and one child sits in the middle to tell the story. In how many different ways can the children sit In the diagram, line A is parallel to line B. Which angles are congruent to angle 1?(20 Points)Select All that apply angle 2angle 3angle 4angleangle 6angle 7angle 8 could someone help please? this is hard !!PLEASE HELPP!! While reading difficult content, it is best to focus on a small section of material.Please select the best answer from the choices providedOTOF In which two ways would the story be different if it were told from the point of view of Mrs. Copperfield? The reader would know why Mrs. Copperfield is not very pleased to see Miss Betsey. The reader would know what Mrs. Copperfield looks like. The reader would know why Mrs. Copperfield is worried about herself and her son. The reader would know how old Mrs. Copperfield's son is. The reader would know why Miss Betsey has come to visit Mrs. Copperfield. PLZ HELP FASTEnter an equation in standard form to model the linear situation. A pool that is being drained contained 19,000 gallons of water. After 2 hours, 14,500 gallons of water remain. In the condition of the working class in England in 1844 how does the author show the impact of the new inventions on society? A rectangular poster is to contain 578 square inches of print. The margins at the top and bottom of the poster are to be 2 inches, and the margins on the left and right are to be 1 inch. What should the dimensions of the poster be so that the least amount of poster is used? I NEED HELP ASAP! For the first part you can pair the object with the number there is no specific one it goes with! What are some of the changes that Ann Cooper made?HURRRRRRRRRRRYYYYYYY how much force would be needed to move a 100 kg object at the acceleration rate of 2 m/s a) Solve x + 4x - 8 = 0 by completing the square Consider the enlarged triangle.A smaller triangle has side lengths 4, 5, 3. A larger triangle has side lengths 8, 10, 6.Which steps should be used to find the perimeter? Check all that apply.Find the scale factor: enlarged over original = 6 over 3 = 2Find the scale factor: enlarged over original = 3 over 6 = one-halfCalculate the perimeter of the original figure.Divide the perimeter of the original figure by the scale factor.Multiply the perimeter of the original figure by the scale factor. Please answer correctly !!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!!