If the temperature has been changing at a rate of −1.5 degrees each hour, and it is currently 5 degrees, the temperature 4 hours ago was

Answer:

(0, - 9 )

Step-by-step explanation:

x = 2y + 18 → (1)

5x = - 3y - 27 → (2)

substitute x = 2y + 18 into (2)

5(2y + 18) = - 3y - 27

10y + 90 = - 3y - 27 ( add 3y to both sides )

13y + 90 = - 27 ( subtract 90 from both sides )

13y = - 117 ( divide both sides by 13 )

y = - 9

substitute y = - 9 into (1)

x = 2(- 9) + 18 = - 18 + 18 = 0

solution is (0, - 9 )

The logarithmic form of 1/4 = 4⁻¹ is log₄ 4⁻¹ = ₋1.

The fundamental logarithmic function has the notation f(x) = log(r) y = log(x), where a > 0. The exponential function ay = x's inverse is represented by this. The common logarithm (log) or natural logarithm (ln) are examples of log functions (log).

The exponential function of the type aˣ = N can be converted into the logarithmic function logₐN = x. A Napier logarithm table can be used to determine the logarithmic value of any number. Logarithms are often calculated using a base of 10, therefore it is possible to get the logarithmic value of any number.

we have the exponential form as aˣ = N

1/4 = 4⁻¹

now the logarithmic form is:

logₐ N = x

log₄ 4⁻¹ = ₋1

hence we get the logarithmic form  as log₄ 4⁻¹ = ₋1.

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Answer:

You want to start off my isolating the y onto one side:

2y-10x=14 ---> 2y=14+10x

then you remove the coefficient from the left side:

2y=14+10x -----> y=7+5x

Then all you want to do is rearrange the equation to match slope intercept:

y=7+5x ----> y=5x+7

Answer:

You want to start off my isolating the y onto one side:

2y-10x=14 ---> 2y=14+10x

then you remove the coefficient from the left side:

2y=14+10x -----> y=7+5x

Then all you want to do is rearrange the equation to match slope intercept:

y=7+5x ----> y=5x+7

Step-by-step explanation:

Answer:

first one = -50

second one = 0.2

Step-by-step explanation:

Answer: bro if your on a computer or phone just use a calculator lol but ill put the answer below

Step-by-step explanation:

-15 divided by 0.3= -50

-4 divided by -20 = -24

The average quantity of juice that is consumed per person in this country is given as 3.84

We have the following data with which to answer this question

The consumption of juice = 1.92 billion

The population of the country = 500 million

The question wants us to calculate the amount of drink that the persons would consume on average in this nation.

we have average = quantity consumed / total number of persons

This would give us

average = 1.92 billion / 500 million

= 1, 920, 000, 000 / 500, 000 ,000

= 3.84

Hence the amount of juice that is consumed per person in this country is given as 3.84

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Answer:

Step-by-step explanation:

basically the angle is a 90 degree angle and it tilted slightly to the left measures that you come out with 3/4 .

The value of the expression √75 + √125 is 5 (√3 + √5 ).

A number is a fundamental mathematical unit. For counting, measuring, and comparing quantities, we utilize numbers. A set of symbols, or numerals, used to represent numbers is known as a number system.

A square root is a factor of a number that yields the original number when multiplied by itself.

Consider the expression √75 + √125,

Let's assume x = √75 + √125

Now,

75 = 5 × 15 = 5 × 3 × 5

125 = 5 × 25 = 5 × 5 × 5

Therefore,

x = √75 + √125

x = √ [ 5 × 3 × 5] + √ [ 5 × 5 × 5 ]

x = 5√3 + 5√5

x = 5 × [ √3 + √5 ]

x = 5 × [ 1.73 + 2.24 ]

x = 5 × 3.97

x = 19.85

√75 + √125 = 19.85

Hence, the value of √75 + √125 is equal to 19.85.

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Answer:

maximum at (0, 2 )

Step-by-step explanation:

the vertex is the turning point on the graph.

the graph increases on the left up to (0, 2 ) then decreases

this indicates the vertex is a maximum

the answer for your question is true. I believe.

Answer:

back view

Step-by-step explanation:

You are very very very correct

Answer:

624

Step-by-step explanation:

650 * .80 = 520520 * 1.20 = 624

Answer:

j = 3

Step-by-step explanation:

Recall the slope formula:

[tex]m=\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]

Now, simply substitute the values from the question.

[tex]\frac{1}{3} =\frac{-4+3}{j-6}[/tex]

Now, use the cross-multiplication method. (remember, when subtracting negatives, the negative becomes a positive)

[tex]1(j-6)=3(-4+3)[/tex]             Cross Multiplication

[tex]1(j-6)=3(-1)[/tex]                   Simplify

[tex]j-6=-3[/tex]                            Distributive Property

[tex]j=3[/tex]                                     Addition Property

Therefore, j = 3.

We will get  lne¹⁰ itself after simplifying the given expression lne¹⁰.

So,

Then,

Therefore, we will get  lne¹⁰ itself after simplifying the given expression lne¹⁰.

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Answer: 8,938 [tex]\frac{8}{9}[/tex] or 8,938.8889 meters per second

Step-by-step explanation:

     To solve this problem, we will use a process called dimensional analysis (that you have probably done many times without realizing it).

     What is dimensional analysis? Let's say you know there are 12 inches in a foot, and you want to know how many inches are in 2 feet. 12 * 2 = 24 inches in a foot, that's dimensional analysis!

     Here is the process you would take to solve your problem:

➜ If we have the units [tex]\frac{hour}{hour}[/tex], they "cancel" out to become one. This way, we make sure we end up with the correct units, [tex]\frac{meters}{second}[/tex].

➜ We take units we know, such as 3,600 seconds in an hour, and multiply them by the original value until we end up with the measurement we want.

[tex]\displaystyle 20,000\; \frac{miles}{hour}*\frac{1 \;hour}{3,600\; seconds} *\frac{1,609\;meters}{1\;mile}=\frac{20,000*1*1,609\;meters}{3,600\;seconds} =\frac{32,180,000\;meters}{3,600\;seconds} = 8,938.89\; \frac{meters}{second}[/tex]

     In other words;

           8,938.89 meters per second

Answer:

odd

Step-by-step explanation:

Not sure tho

The answer to the present question is:5x² + 13x - 6 = (5x - 2) (x + 3)

For a polynomial, ax² + bx + c, we want to separate the center term because the sum of these two numbers, whose sum is adequate to the merchandise of the opposite two numbers.

So, here, we'd like to rewrite 13 because the sum of two numbers, whose product is adequate to the opposite two numbers, i.e., 5*(-6) = -30

So, to separate 13, two numbers used here will be: 1 5 and -2, because after we will add 15 and -2 we are going to get 13 and that we will multiply them, then we are going to get

-30.5x² + 13x -6 = 5x² + 15x - 2x - 6

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

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

Therefore,  5x² + 13x - 6 = (5x - 2) (x + 3)

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The absolute value of the inequality is x < 6

Absolute value can be defined as the describing the distance of a number from zero on the number line, without considering direction.

It is also the value of the number with no consideration to it's sign.

Given the inequality;

| | x+4|-7 |< 5 | |

Take the absolute value and expand the bracket

(x + 4) + 7 < 5

expand the bracket

x + 4 + 7 < 5

x + 11 < 5

Make 'x' the subject

x < 5 - 11

x < -6

Take the absolute value

x < 6

Thus, the absolute value of the inequality is x < 6

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2.

x^2-4y

/2

4^2- (4*-3)

/2

16+12

/2

28/2

14

Answer:

f(-8)= -7660

Step-by-step explanation:

f(-8)= 3(-8)^2·5(-8)+20

Answer:

y = -2

Step-by-step explanation:

Given equation:

[tex]3(-4y-5)=8y+25[/tex]

Distribute:

[tex]\implies 3 \cdot -4y - 3 \cdot 5=8y+25[/tex]

[tex]\implies -12y - 15=8y+25[/tex]

Add 15 to both sides:

[tex]\implies -12y - 15+15=8y+25+15[/tex]

[tex]\implies -12y =8y+40[/tex]

Subtract 8y from both sides:

[tex]\implies -12y-8y =8y+40-8y[/tex]

[tex]\implies -20y =40[/tex]

Divide both sides by -20:

[tex]\implies \dfrac{-20y}{-20} =\dfrac{40}{-20}[/tex]

[tex]\implies y =-2[/tex]

Now we have to,

→ solve for the required value of y.

Let's solve the problem,

→ 3(-4y - 5) = 8y + 25

→ -12y - 15 = 8y + 25

→ -12y - 8y = 25 + 15

→ -20y = 40

→ y = -40/20

→ [ y = -2 ]

Hence, the value of y is -2.

The inverse of the expression y = 5 · (x - 6)² - 5 is x = √[(y + 5) / 5] + 6. (Correct choice: D)

According to the statement we have a function of the form y = f(x) and we need to find its inverse, that is, finding the equation of x in terms of y. This can be done by using algebra properties:

y = 5 · (x - 6)² - 5                          Given

y = 5 · [(x - 6)² - 1]                         Distributive property

y / 5 + 1 = (x - 6)²                          Compatibilities with multiplication and addition / Existence of additive and multiplicative inverses / Associative and modulative properties

x - 6 = √(y / 5 + 1)                         Definition of square root / Symmetric property

x = √(y / 5 + 1) + 6                         Compatibility with addition / Existence of additive inverse / Associative, commutative and modulative properties

x = √[(y + 5) / 5] + 6                      Addition of fractions with different denominators / Result

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The the distance between the school and Nokesville be on the map is 0.7 inches.

What is scaling ?

It is the technique to resize drawing with comparing to actual size of object which uses proportion or ratio. For example, Mapping of earth, drawing prototype of automobiles.

It is given that :

The distance between the school and Target is 4.2 miles and on a map the ratio is 0.5 inches is equal to 3 miles that is :

3 miles = 0.5 inches on map

Now to find the distance between the school and Nokesville be on the map we first find for 1 miles on the map and then multiply it by 4.2 miles :

3 miles = 0.5 inches on map

1  miles = 0.5/3 inches on map

4.2 miles = (0.5/3) x 4.2 inches on map

4.2 miles = 0.7 inches inches on map

Therefore, the the distance between the school and Nokesville be on the map is 0.7 inches.

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Answer:

f(- 1) = - 5

Step-by-step explanation:

substitute x = - 1 into f(x)

f(x) = x² + 2x - 4 , then

f(- 1) = (- 1)² + 2(- 1) - 4 = 1 - 2 - 4 = - 5

Answer:

Option 2

Step-by-step explanation:

The distances will be the same because the bisector will create congruent triangles, and the desired equalities follow from CPCTC and the definition of congruency.

Answer:

It is: 8^4 times 3^2 = 36,864

Answer:

8^4 x 3^2

Step-by-step explanation:

There's 4 8's and 2 3's so that's the number the exponents will be

Answer:

I deleted my answer bc i accidentally answered the wrong question

f ⁻¹( x)= x^2+4 is the inverse of f(x)= [tex]\sqrt{x-4}[/tex]

what is an inverse function ?

An inverse function or an anti function is defined as a function, which can reverse into another function. In simple words, if any function “f” takes x to y then, the inverse of “f” will take y to x. If the function is denoted by 'f' or 'F', then the inverse function is denoted by f-1 or F-1.

write f(x)= [tex]\sqrt{x-4}[/tex] as an equation

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

interchange the variables

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

solve the equation for y we get

squaring both side ,we have

x^2 = y-4

this implies that

y= x^2 +4

replace y with f ⁻¹( x)  to show the final answer

f ⁻¹( x)= x^2+4

Hence, f ⁻¹( x)= x^2+4 is the inverse of f(x)= [tex]\sqrt{x-4}[/tex]

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If the expression is log₃ 7(2 x-3)², then the expansion of the expression is [[tex]log_{3}[/tex] 7+ [tex]log_{3}[/tex] [tex](2x-3)^{2}[/tex]]

Given that the expression is log₃ 7(2 x-3)².

We are told to find the expansion of the expression.

Logarithmic function is basically the opposite of the exponential function and is denoted by log or ln.

It says that [tex]log_{a} b[/tex]= [tex]log_{x}b /log_{x}a[/tex].

The expression is log₃ 7(2 x-3)².

We know that log mn=log m +log n.

log₃ 7(2 x-3)²=[[tex]log_{3}[/tex] 7+ [tex]log_{3}[/tex] [tex](2x-3)^{2}[/tex]]

We know that log [tex]a^{b}[/tex]=log b/log a but we are not changing here,So,

log₃ 7(2 x-3)²=[[tex]log_{3}[/tex] 7+ [tex]log_{3}[/tex] [tex](2x-3)^{2}[/tex]]

Hence if the expression is log₃ 7(2 x-3)², then the expansion of the expression is [[tex]log_{3}[/tex] 7+ [tex]log_{3}[/tex] [tex](2x-3)^{2}[/tex]]

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The given expression , the value of x is 2.

given,

equivalent expression = -3(2x - 4)

                                    = -6x + 12

                                  x  = 2

Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we plug in the same value for the variable.

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