Are the ones with answers correct? I just want to make sure I’m right

The output value of f(5) in the given function f(x) = -4x - 5 is -25

A function is simply a set of ordered pairs where each first element is paired with one and only second element and also no element in either pair is without a partner.

Given the data in the question;

To determine the output value of f(5), replace the variable x with 5 and simplify.

f(x) = -4x - 5

f(5) = -4(5) - 5

Perform the multiplication operation to remove the parenthesis.

f(5) = -4(5) - 5

f(5) = -20 - 5

f(5) = -25

Therefore, the output value of f(5) in the given function f(x) = -4x - 5 is -25.

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The negation is "antarctica is not in the northern hemisphere" &  the truth value of the original proposition is FALSE and its negation is TRUE.

The sentences that can be classified as true or false , but not both are called as propositions.

For Example , "Shirt is yellow" is a proposition whereas "a is less than 2" is not a proposition as the value of a is not fixed.

Negation of proposition means writing the opposite of the given proposition.

If the proposition is true then it's truth value is "True".

If the proposition is false then it's truth value is "False".

According to the given Question

The negation of the statement "antarctica is in the northern hemisphere" is "antarctica is not in the northern hemisphere"

The truth value of the original proposition is FALSE as Antarctica is in the Southern hemisphere.

The truth value of the negation is TRUE as Antarctica is not in the Northern hemisphere it is in southern Hemisphere.

Therefore , the negation is "antarctica is not in the northern hemisphere" &  the truth value of the original proposition is FALSE and its negation is TRUE.

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value of x =  25

In, mathematics a logarithmic equation is inverse of exponential equation. That means, we can easily convert the logarithmic equation into exponential equation and vice versa. The basic form of the logarithm function can be written as [tex]log_{a}x[/tex] .

where, a is the base of function or equation

           x is the expression

Mathematically, if [tex]a^x = N[/tex] is an exponential function then, this can be converted to logarithmic function as  [tex]log_aN = x[/tex].

There are many formulas that are given to us for solving several simple and complex problems based on logarithmic functions and logarithmic equations.

Some important formulas of logarithms :

According to given statement,

log 4x =2

now convert this equation to exponential form

=> 4x = 10²

=> 4x = 100

=> x = 100 / 4

=> x = 25

Thus solution for this equation is x =25.

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Answer:

Step-by-step explanation:

4,536

The factoring of the expression 3 x²-2=5 x is (x - 2) (3x +1)

By ordering the values, we get:

3x² - 5x - 2 = 0

To solve this exercise, we have to follow the rules of factoring:

1. Factor 5 from 5x:

3x² - 5x - 2 = 0

3x² + (- 6 + 1) x - 2 = 0

2. Apply the distributive b:

3x² - 6x + 1x - 2 = 0

3. Groups the first two terms and the last two terms:

(3x² - 6x) + 1x - 2 = 0

4. Factorize the greatest common denominator (GCM) of each group:

3x(x - 2) + x - 2 = 0

5. Simplify the common term (x - 2) with the distributive property:

(x - 2) (3x +1)

Is a technique that consist of decomposition of a factor into a product of another factor, which when multiplied together give the original number.

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If we have two pairs  (x₁, y₁) and (x₂, y₂) on the table, use the following formula to get the slope:

a = (y₂ - y₁)/(x₂ - x₁)

A general linear equation in the slope-intercept form can be written as:

y = a*x + b

Where a is the slope and b is the y-intercept.

Now, if the linear equation has a table with some values:

X    Y

x₁    y₁

x₂   y₂

x₃   y₃

etc...

Then you can select any two of the pairs on the table, for example (x₁, y₁) and (x₂, y₂), and use the following formula to get the slope:

a = (y₂ - y₁)/(x₂ - x₁)

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Answer:

it would be 1 (im not really sure what it would be, let me know if this helps)

Step-by-step explanation:

The two numbers are 12 and 20

Let the small number be x

Let the large number be y

We have that;

y = 8 + x      (1)

But;

x + y = 32    (2)

Now, substitute the value of y as 8 + x in equation (2)

x + 8 + x = 32

collect like terms

2x + 8 = 32

2x = 32 - 8

2x = 24

Make 'x' the subject

x = 24/ 2

x = 12

But;

y = 8 + x

y = 8 + 12

y = 20

Thus, the two numbers are 12 and 20

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Answer:

a = 10

Step-by-step explanation:

The image is showing a linear pair which equals 180°
104° is shown.

If you take 180° and subtract 104° you should get the answer to what (8a -4)° should equal to.

180° - 104° = 76°

Your equation should look like : 8a - 4 = 76°
-- Add 4 to both sides

8a - 4 = 76°
     +4    +4

= 8a = 80
-- Divide 8 on both sides

8a/8 = 80/8

a = 10

Proof:

8(10) - 4 =
80 - 4 = 76°

104° + 76° = 180°

Hope this helps!
--Blu

The time taken for Mel to finish mowing the yard if they have 80 minutes is 53 minutes.

It should be noted that this represents the number of pieces removed from the whole. The denominator of a fraction is the numerical value that comes before the brings together various.

Given that,

Michael mows = 1/3 of the yards

Mel will cut: 1 - 1/3 = 2/3

Therefore, the time taken for Mel to mow the yard will be:

= 80 × 2/3

= 53 minutes

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After Michael mows ⅓ of the yard, Write a fraction division problem that you can use to find out how long it will take Mel to finish mowing the yard if they have 80 minutes.

The equation of the line passing through the given coordinate with the given slope is; y = 2x + 11

The formula for equation of line in point slope form is;

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

We are given the slope is 2

Now, if the line passes through the coordinate (-4, 3), then the equation of the line is;

(y - 3) = 2(x - (-4))

y - 3 = 2x + 8

y = 2x + 11

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If the expression is log₄2+log₄8, then it will look like [tex]log_{4}16[/tex] in single logarithm form.

Given that the expression is log₄2+log₄8.

We are required to express the given expression in single logarithm.

Product property of logarithm basically tells that says that the logarithm of a product is equal to a sum of logarithms and because logs are exponents, and we multiply like bases, we can add the exponents.

The expression is log₄2+log₄8.

log₄2+log₄8=[tex]log_{4}[/tex](8*2) (We are not required to write the base separately)

=[tex]log_{4}[/tex]16

Hence if the expression is log₄2+log₄8, then it will look like [tex]log_{4}16[/tex] in single logarithm form.

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The 4 number of boxes are in the stack.

Arithmetic is the branch of mathematics that deals with the study of numbers using various operations on them. Basic operations of math are addition, subtraction, multiplication and division. These operations are denoted by the given symbols.

Given:

A stack of boxes is 6/5 meters tall.

Each box is 3/10 meter tall.

According to given question we have

The number of  boxes are in the stack

[tex]\frac{6/5}{3/10} \\\\=\frac{6*10}{3*5} \\\\=4[/tex]

Therefore, the 4 number of boxes are in the stack.

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Answer:

x= 0.31066017 rounded to 0.31

Step-by-step explanation:

first you take out the exponent (2) by getting the square root of 18 so the equation will be 4x+3=18squared rooted. the primary factors of 18 are 2*3 squared. so instead of 18 put the factors is.so now you will get

4x+3=3^2*2 square rooted.

then you apply the radical rule so square root each of the digits.that will simplify to 4x=3square rooted by 2 divide by 4 on both sides minus 3/4 and if you simplify it should give you the answer

[tex]\sqrt{x}[/tex] = [tex]\sqrt{x+1}[/tex] has no real roots.

[tex]\sqrt{x}[/tex] = [tex]\sqrt{x+1}[/tex]

squaring both the sides

x = x+1

0 = 1

which is not true

hence false.

Therefore, no real roots.

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The algebraic expression for the given statement is: 9x + 9.

Given the statement above, the unknown number can be represented with variable "x".

The number = x

"Product" means multiplication.

"Product of 9 and x" = 9x

If 9 is added to the "product of 9 and x", the algebraic expression would be: 9x + 9.

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If Reginald Wallace’s gross weekly salary is $515 and the Medicare tax is 1.45 percent of gross pay. The state tax is 1.5 percent of gross pay. The amount that is deducted from Wallace’s weekly wages for state tax and Medicare tax is: $15.19.

State tax=1.5 percent of gross pay

Medicare tax=1.45 percent of gross pay

State tax=$515 ×0.015

State tax= $7.725

Medicare tax=$515× 0.0145

Medicare tax = $7.4675

Hence:

State tax and Medicare tax=$7.725+$7.4675

State tax and Medicare tax=$15.1925

State tax and Medicare tax=$15.19 (Approximately)

Therefore If Reginald Wallace’s gross weekly salary is $515 and the Medicare tax is 1.45 percent of gross pay. The state tax is 1.5 percent of gross pay. The amount that is deducted from Wallace’s weekly wages for state tax and Medicare tax is: $15.19.

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a) The explosion does violate the town regulation

b) The values are , I = [tex]1.65 * 10^{2} W/m^{2}[/tex] and [tex]I_{0}[/tex] = [tex]10^{-12} W/m^{2}[/tex]

The values that we have been given are

        L = loudness of the sound = 10log(I/[tex]I_{0}[/tex])

        I = intensity of the sound in watts per square meter = [tex]1.65 * 10^{2} W/m^{2}[/tex]

        [tex]I_{0}[/tex] = intensity of barely audible sound = [tex]10^{-12} W/m^{2}[/tex]

Putting the required value in the equation of the loudness we get

      a)       L =  [tex]10*log (\frac{1.65*10^{2} }{10^{-12} } )[/tex]

             L = 10*14.217 dB = 1142.17 dB

And according to the town regulation the loudness of the construction work should not exceed 100dB.

Thus the explosion is in violation of the town regulation as it exceeds 100dB.

b)  The respective values of I and [tex]I_{0}[/tex] are

        I = intensity of the sound in watts per square meter = [tex]1.65 * 10^{2} W/m^{2}[/tex]

         = intensity of barely audible sound = [tex]10^{-12} W/m^{2}[/tex]

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let's recall that an angle bisector, bisects = cuts into two equal halves.

Check the picture below.

Answer:

54

Step-by-step explanation:

When the given non testable questions are made into testable questions, they become:

A testable question is one that requires the answer to be acquired by means of experimentation.

Instead of asking, "Which planet is the most interesting to study?" you could ask about the conditions that a planet has which are considered subjects of interest.

Also, instead of asking, "What happens if you do not eat breakfast?" you could ask about how the body is affected when we skip breakfast. This can be tested in an experiment that checks the body's functions when breakfast isn't eaten.

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The solution of the given equation by rounding off it to the nearest ten-thousandth is 10.0427.

What is a round-off of the digit?

In mathematics, a round-off is defined as an approximation of the given number to a fewer number of significant digits by taking into consideration some rules.

For eg: 13.58 ~ 13.6

Solving the given equation:  log 4 + 2 log x = 6

We are given a logarithmic expression: log 4 + 2 log x = 6  

We know that e^(log b) = b

a log b = (log b)^a

log a + log b = log (ab)

Using exponential on both sides, we have

e^(log 4 + 2 log x) = e^6

e^(log 4 + log x² ) = 403.428

e^(log 4x² ) = 403.428

4x² = 403.428

x² = 403.428 / 4

x² = 100.857

x = 10.0427

Hence, the solution of the given equation rounded off to the nearest ten-thousandth is 10.0427.

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Let the number be x

x=18

if you really liked my answer, be sure to rate, thanks, and award brainliest

hope this helped :)

Answer:    X=18

Step-by-step explanation:

Answer: associative property of adding

Answer:

Step-by-step explanation:

The area is 6

because the base is 4 units and the height it 3 units, and base times height will give you 6.

Answer:

option a 0.06 bared

Answer:

Answer: 57 & 59

Step-by-step explanation:

Let us assume first odd integer is 'x'

Then, next consecutive integer should be 'x+2'. RIGHT?

Now, put in the form of equation:

x + (x+2) = 116

x + x + 2 = 116

2x + 2 = 116

2x = 116 - 2

2x = 114

x = 114 / 2 => 57

Now, put the value of 'x' in second step:

           x + 2 => 57 + 2 = 59

Therefore, answer would be 57 & 59

Answer:

3

Step-by-step explanation:

6=2*3

9=3*3

The only common factor is 3

The numeric values of the function are given as follows:

The function is missing, and is given as follows:

It asks for the following numeric values:

f(-3), f(2), f(5).

To find the numeric value of a function, we replace each instance of the variable by the desired value.

Hence, for this function, the numeric values are:

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