Solve the equation below algebraically for the exact value of x.
6 - 2(x + 5) = 42​

Answers

Answer 1

Answer:

x= -19

Step-by-step explanation:

6-2(x+5)=42

6-2x-10=42

-4-2x=42

-2x=38

x= -19


Related Questions

How do I solve each log equation

Answers

When subtracting logs you actually divide.

logx^2 = log 160 - log 2

logx^2 = log (160/2)

logx^2 = log 80

Now remove the log from each side:

x^2 = 80

x = √80

x = 4√5 and -4√5

fill in the missing exponents in each box & show reasoning (5^?)^3=5^1

Answers

the missing exponent would be 2

[tex]\bf (5^?)^{3}=5^1\implies 5^{?\cdot 3}=5^1\implies \stackrel{\textit{same base, the exponents must also be the same}}{?3=1\implies ?=\cfrac{1}{3}}[/tex]

GENERAL QUESTION for my next math class should i take pre-calc, or intergrated math. which one is easier and which one hasmore answers on here.

Answers

Because integrated math requires skills in trigonometry, I would highly recommend pre calc first

Answer:

I would say you first evaluate your strengths by checking on both the syllabuses. Find what really interests you, your passion. Is it pre-calculus or is it integrated math.

Ability and passion go hand in hand when it comes to the performance.

Solve the inequality statement:
4r – 5 < 5r+7

Answers

Answer:

r > - 12

Step-by-step explanation:

4r – 5 < 5r+7

4r - 5r < 7 + 5

-r <12

r > - 12 (when you multiply or divide a negative number, the sign will be flipped)

Answer:D

Step-by-step explanation:

what is the term that is used for the only number which is neither positive nor negative.

Answers

Answer:

Zero is neither positive nor negative integer and is known as origin.

What is the value of v in the equation 3(2v + 1)=-15(5v + 16)​

Answers

Answer:

v = -3

Step-by-step explanation:

Step 1: Use the Distributive Property

6v + 3= -75v - 240

Step 2: Isolate v

81v = -243

Step 3: Simplify

v = -3

The value of v in the equation 3(2v + 1)=-15(5v + 16)​ is -3 after rearranging and solving.

What is linear equation?

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have a linear equation in one variable:

3(2v + 1)=-15(5v + 16)​

6v + 3 = -75v -240

6v + 75v = -240 - 3

81v = -243

v = -3

Thus, the value of v in the equation 3(2v + 1)=-15(5v + 16)​ is -3 after rearranging and solving.

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can help me with this please​

Answers

Answer:

Step-by-step explanation: the answer is 1 because line a and b are paralel so 1 , 5 are the same as well as (2,7)

Answer:

angle 1

Step-by-step explanation:

this is because they are alternating angles.

The principal P is borrowed at a simple interest rater for a period of time t. Find the loan's future value A, or the total amount due at timet. Round answers to the
nearest cent.
P - $7000, r = 7%, t = 6 years

Answers

Simple interest formula:
I=PRT

I(interest money created in dollars)
P(initial amount of money)
R(interest rate as a decimal)
T(time in years)

I=7000(.07)(6)
I=$2,940

Therefore, the future value of A is $2,940

The loan's future amount is $9940

What is simple interest?Simple interest is based on the principal amount of a loan or the first deposit in a savings account.

The formula to calculate Simple interest is :

I=PRT

where,

I(interest money created)

P(initial amount of money)

R(interest rate as a decimal)

T(time in years)

How to find the loan's future value?Loan's future value will be principle amount + the net interest.

I=7000(.07)(6)

I=$2,940

So, the loan's future amount = $7000 + $2940 = $9940

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If 1/2 of all the books at a bookstore are fiction and 3/5 of the books in fiction
are mysteries, what fraction of the store's books are fiction mysteries?

Answers

Answer:

[tex]\frac{3}{10}[/tex]

Step-by-step explanation:

we know that

To find the fraction of the store's books that are fiction mysteries, multiply 1/2 by 3/5

so

[tex](\frac{1}{2})(\frac{3}{5})=\frac{3}{10}[/tex]

David wants to build a rectangular fencing with the 5 identical parts for his animals. He has 780 feet of fencing to make it. What dimensions of each part will maximize the total enclosed area?

Answers

Answer:

65 ft by 39 ft

Step-by-step explanation:

Let x ft be the length of each part and y ft be the width of each part. The total perimeter of all 5 parts is

[tex]6x+10y=780[/tex]

The length of the large rectangle is 5y ft and the width of the large rectangle is x, so the total area is

[tex]A=x\cdot 5y[/tex]

From the first equation,

[tex]y=78-0.6x[/tex]

Substitute it into the area expression:

[tex]A(x)=x\cdot 5(78-0.6x)=390x-3x^2[/tex]

Find the derivative:

[tex]A'(x)=390-3\cdot 2x=390-6x[/tex]

Equate it to 0:

[tex]390-6x=0\\ \\6x=390\\ \\x=65[/tex]

Then

[tex]y=78-0.6\cdot 65=78-39=39[/tex]

What is the function rule for the following situation? Rex paid $20 for a membership to the pool and pays $300 each time he goes to the pool
https://brainly.com/question/12669821

Answers

f(x)=20+300x

Also, Rex should find a different pool because that fee is ridiculous.

Final answer:

The function rule in the given situation is a linear function and can be represented as C=20+300x. In this rule, 'C' is the total cost in dollars, '20' is the initial membership fee, '300' is the cost of each pool visit and 'x' is the number of pool visits.

Explanation:

The function rule in this situation is called a linear function. A function rule describes how to convert an input (in this case, the number of times Rex visits the pool) into an output (the total cost).

The function rule for this specific situation could be represented as C=20+300x, where 'C' is the total cost, '20' is the initial membership fee, '300' is the cost each time Rex goes to the couple, and 'x' is the number of times Rex goes to the pool.

So, each time Rex goes to the pool, you would multiply that number by 300 (the cost per visit), and then add 20 (the initial fee) to get the total cost.

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Write an equation.John bought 6 note books at CVS, he spent a total of $13.50.​

Answers

2.25 per notebook because 13.50/6 = 2.25

Hello There!

6n=13.50

This means that 6 notebooks and some amount represented as n is 13.50

Use the Exterior Angles Theorem to find the measure of each angle in degrees.​

Answers

You have to begin by using the triangle sum therom. That means Angle DEC would be 64°, Angle D would be 76°, and angle C would be 40°

choose the correct simplification of (x^2/y^5)^4

Answers

Answer:

x^8/y^20

Step-by-step explanation:

multiply the exponents by 4.

Find the volume of a cylinder with a 9-inch height and a 3-inch radius
(i = 3.14).
A. 35.36 cubic inches
B. 89.78 cubic inches
C. 169.56 cubic inches
D. 254.34 cubic inches

Answers

Answer:

D. 254.34 cubic inches

Step-by-step explanation:

The volume of a cylinder is given by

V = pi r^2h

Where r = 3 in and h = 9 in

V = (3.14) * (3)^2 *9

V = 254.34 in ^3

Answer:

volume of a cylinder= \pi*r^2*h

81*pi

=254.34 in^3

OFFERING A LOT OF POINTS. please write 2 or
more sentences and explain how you got the answer.
Alaska is the largest state in the United States. The state has an area of approximately 663,000 square miles. Rhode Island is the smallest state in the United States, with an area of approximately 1,000 square miles. Currently, the populations of Alaska and Rhode Island are 732,000 people and 1 million people, respectively. If Alaska had the same number of people per square mile as Rhode Island, what would its population be? In two or more sentences, explain your calculations and conclusions.

Answers

Answer:

Rhode Island has 1,000,000 people within an area of 1000 sq miles.....

1,000,000/1000 = 1000 people per sq mile

Step-by-step explanation:

If Alaska had the same number of people per square mile as Rhode Island, its population would be calculated as 663,000 mi^2 times 1,000 people = 663,000,000 people.

Solve the equation for a: ab – ac = d + e

Answers

Answer:

see explanation

Step-by-step explanation:

Given

ab - ac = d + e ← factor out a from both terms on the left side

a(b - c) = d + e ← divide both sides by (b - c)

a = [tex]\frac{d+e}{b-c}[/tex]

Answer:

Step-by-step explanation:

Liliana wants to start a seventh-grade computer club at Hamden Middle School. She surveyed 20 seventh-grade students at the town park. She asked each student how many hours they spend on their computers each week. She obtained the following results.

8, 15, 0, 11, 12, 13, 16, 13, 0, 4, 17, 14, 30, 13, 5, 12, 1, 13, 12, 21

What is the ratio of the total number of students who used their computers to the total number of students surveyed?

Answers

Answer:

Ratio would be 9 : 10

Step-by-step explanation:

Liliana surveyed 20 students that how many hours they spend on their computers each week.

The results are as follows

8, 15, 0, 11, 12, 13, 16, 13, 0, 4, 17, 14, 30, 13, 5, 12, 1, 13, 12, 21

In the above results 2 students did not use computers out of 20 students.

Therefore, The total number of students who used their computers = 20 - 2 = 18

So the ratio would be 18 : 20 or 9 : 10

Answer:

C. 18/20 or 9/10

HELP ASAP WILL REQARD BRAINLIEST

GRADUATING THIS WEEK NEED THIS ALL ANSWERED PLZ

1. 14k+k<30
2. 9d-3d+7 > 31
3. 13x-2x>77
4. 5y< 7y + 18
5. 3f-12-10+9f
6. 4t-8< 2t-2
7. 15h+ 16 > 6h-20
8. 4r-2r> 6-​

Answers

Part A

1. 14k+k<30

Add the left hand side to get;

15k<30

Divide both sides by 15.

[tex]\frac{15k}{15}\:<\:\frac{30}{15}[/tex]

k<2

2. We have 9d-3d+7>31

Group similar terms to obtain:

9d-3d>31-7

Combine similar terms:

6d>24

Divide both sides by 6

[tex]\frac{6d}{6}\:>\:\frac{24}{6}[/tex]

This implies that:

d>4

3. We have 13x-2x>77

This implies:

11x>77[tex]\frac{11x}{11} \:>\:\frac{77}{11}[/tex]

x>7

4. We have 5y<7y+18

This implies

5y-7y<18

-2y<18

Divide both sides by -2 and reverse the sign.

[tex]\frac{-2y}{-2} \:>\:\frac{18}{-2}[/tex]

[tex]y\:>\:-9[/tex]

5. The given expression is;

3f-12>-10+9f

Group similar terms:

-12+10>9f-3f

-2>6f

Divide both sides by 6.

[tex]\frac{-2}{6}\:>\:\frac{6f}{6}[/tex]

[tex]-\frac{1}{3}\:>\:f[/tex]

[tex]f\:<\:-\frac{1}{3}[/tex]

6. We have 4t-8<2t-2

Group similar terms;

4t-2t<-2+8

2t<6

t<3

7.  We have

15h+16>6h-20

Group like terms;

15h-6h>-20-16

9h>-36

Divide both sides by 9

h>-4

8. The given inequality is

4r-2r>6-r

This implies

4r-2r+r>6

3r>6

r>2

Part B

x-27=193

x=193+27

x=220

2. The given equation is

f(12)=48

or

12f=48

f=48/12

f=4

3. We have the equation 4s+2=74

4s=74-2

4s=72

s=18

4. The given equation is

9(r+1)-18=2r+12

Expand to get:

9r+9-18=2r+12

Group like terms:

9r-2r=12+18-9

7r=21

r=3

Plz help me with this

Answers

The minimum y-value is -7.

I'm only a few Brainliests away from ranking up, so one would be much appreciated.

Answer:  A) -7

Step-by-step explanation:

The Asymptote is 1 so the range of the graph is from +1 to -1.

However, there is also a shift down of 6 units, so the range of the transformed graph is from (+1-6 = -5) to (-1-6 = -7).

Therefore, the maximum is -5 and the minimum is -7.

find the area of the trapezoid?

Answers

Answer: 52.5 units squared

Step-by-step explanation:

The formula to find the area of a trapezoid is, (base1 + base2)/2 * height

So you find out which variable is which

Base 1 = 4

Base 2 = 3

Height = 15

Then plug it into the formula,

(4+3)/2 * 15

Then solve the order of operations

7/2 * 15

3.5 * 15

52.5 is the answer

Answer:

52.5

Step-by-step explanation:

Formula

Area = (1/2) (a + b)*h

Givens

a = 4

b = 3

h = 15

Solution

Area = (4 + 3)*15/2

Area = 7 * 15/2

Area = 105/2

Area = 52.5

Find the surface area of the prism.

Answers

Answer:

376

Step-by-step explanation:

2(8x10)=2(80)=160

2(10x6)==2(60)=120

2(6x8)=2(48)=96

160+120+96=376

Theo starts with savings of £18
James starts​ with no savings
Each week from now,
Theo will save £4.50 and James will save £4
In how many weeks will Theo and James have savings in the ratio 15:8?

Answers

Answer:

6 weeks.

Step-by-step explanation:

Let x be the number of weeks to be found.

Then  4.5x + 18 / 4x = 15/8

Cross multiply:

36x + 144 = 60x

24x = 144

x =  6  (answer).

Final answer:

In approximately 1.67 weeks (or rounded to 2 weeks), Theo and James will have savings in the ratio 15:8.

Explanation:

We can set up an equation to represent the savings of Theo and James over time. Let x be the number of weeks they have saved. Theo will have saved £4.50x and James will have saved £4x. We can set up the equation:

£4.50x / £4x = 15 / 8

Cross-multiplying the equation gives us:

8 * £4.50x = 15 * £4x

Simplifying the equation gives us:

36x = 60x

Dividing both sides by 36x gives us:

1 = 5 / 3x

Cross-multiplying again gives us:

3x = 5

Dividing both sides by 3 gives us:

x = 5 / 3

Therefore, in approximately 1.67 weeks (or rounded to 2 weeks), Theo and James will have savings in the ratio 15:8.

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50 points!!! please have serious answers
Use the data in the following table to answer the 3 questions below. Please show all calculations needed.

Daily Earnings $25 $26.50 $20 $23.50 $20

Find:
1: Median
2: Mean
3: Mode

PLEASE SHOW ALL STEPS

Answers

Answer:

Median: 23

Mode: $20

Mean: The average of numbers added up and then divided, equalling in 23

Simplify the expression using long division. (10x2 – 85x – 10) ÷ (x – 8)

Answers

Answer: 5 • (2x2 - 17x - 2)

 ———————————————————

        x - 8      

Step-by-step explanation:

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 

Step  2  :

           10x2 - 85x - 10

Simplify   ———————————————

                x - 8      

Step  3  :

Pulling out like terms :

3.1     Pull out like factors :

  10x2 - 85x - 10  =   5 • (2x2 - 17x - 2)  

Trying to factor by splitting the middle term

3.2     Factoring  2x2 - 17x - 2  

The first term is,  2x2  its coefficient is  2 .

The middle term is,  -17x  its coefficient is  -17 .

The last term, "the constant", is  -2  

Step-1 : Multiply the coefficient of the first term by the constant   2 • -2 = -4  

Step-2 : Find two factors of  -4  whose sum equals the coefficient of the middle term, which is   -17 .

     -4    +    1    =    -3  

     -2    +    2    =    0  

     -1    +    4    =    3  

Observation : No two such factors can be found !!  

Conclusion : Trinomial can not be factored

Need Help !!!!!!!!!!!!

Answers

Answer:

C

Step-by-step explanation:

The slope m of the functions give the measure of the rate of change.

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

g(x) = [tex]\frac{5}{2}[/tex] x - 3 ← is in slope- intercept form

with slope m = [tex]\frac{5}{2}[/tex] = 2.5

Calculate the slope of f(x) using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, - 3.5) and (x₂, y₂ ) = (1, - 1) ← 2 points from the table

m = [tex]\frac{-1+3.5}{1-0}[/tex] = 2.5

Hence

The slopes of g(x) and f(x) are both m = 2.5, thus

The functions increase at the same rate → C

Need Help Please!!!!!!

Answers

I believe it has to be the height of a cricket as it jumps the other ones don’t seem to fit right.

pretty sure it’s the crickets because the others one does not make sense, crickets are known for jumping up and down a lot so i’m pretty sure it’s the cricket

The blue figure is rotated 90° counterclockwise around the origin and then reflected across the x-axis. In which quadrant will the transformed image be located?

Answers

The transformed image will be located in Quadrant III.

To solve this problem, we can think about what happens to the hour hand when it is rotated 90 degrees counterclockwise around the origin, and then reflected across the x-axis.

Rotation: When the hour hand is rotated 90 degrees counterclockwise around the origin, it moves to the position of the 3 o'clock hour. This means that the x and y coordinates of the tip of the hour hand are swapped. For example, if the tip of the hour hand was originally at (3, 4), after the rotation it would be at (4, 3).

Reflection: When the hour hand is reflected across the x-axis, its y-coordinate is multiplied by -1. This means that if the tip of the hour hand was at (4, 3) after the rotation, after the reflection it would be at (4, -3).

Now, let's look at the quadrants:

Quadrant I: x > 0, y > 0

Quadrant II: x < 0, y > 0

Quadrant III: x < 0, y < 0

Quadrant IV: x > 0, y < 0

Before the rotation, the tip of the hour hand is in Quadrant I, because both its x and y coordinates are positive.

After the rotation and reflection, the tip of the hour hand is in Quadrant IV, because its x-coordinate is still positive and its y-coordinate is now negative.

Therefore, the image will be in Quadrant III.

1) m SUT equals ___ Degrees.

2) m TUW equals ___ degrees

3) TUW is a(n) _____angle

4) SUT is a(n) ____angle

5) TUW and SUT are___ angles

Answers

Answer:

1. 30

2. 150

3. obtuse

4. acute

5. Adjacent

Step-by-step explanation:

The correct expression for the angles are;

1) m SUT equals  30 Degrees.

2) m TUW equals  150 degrees

3) TUW is obtuse angle

4) SUT is acute angle

5) TUW and SUT are Adjacent angles

What are obtuse acte and adjacent angles?

Similar to corners, right angles have a 90° measure. Acute angles are less than ninety degrees. More than 90° but less than 180° are obtuse angles. Additionally, a straight angle is 180°, which is the point at which two lines merge into one by going in the same direction.

Any angle is composed of two rays that converge at a point known as the vertex. When two angles share a ray, it indicates that they are adjacent to one another.

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Simplify (a + b )(a^2 - ab + b^2)

Answers

Answer:

a^3 + b^3

Step-by-step explanation:

(a + b )(a^2 - ab + b^2)

Distribute

a*a^2 -a*ab+a*b^2    + b*a^2 -b*ab +b*b^2

Simplify

a^3 -a^2b +ab^2 +a^2b -ab^2+b^3

Combining like terms

a^3 +b^3

Answer:

a^3 + b^3

Step-by-step explanation:

hope this helps you! have a good day/night :D

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