8x - 3y = 12
-8x+3y=5.

The value of the functions defined in the piecewise function f(1) - f(-7) is 4

From the question, we have the following piecewise function that can be used in our computation:

f(x) = | x + 8| - 9         if x ≤ -4

         -x² - 3x             if  -4 < x ≤ 1

         2x + 7               if  x > 1

So, we have the expression to be

f(1) - f(-7)

In the function f(1), we have the x value to be

x = 1

This x value is at the domain -4 < x ≤ 1

So, we make use of

f(x) = -x² - 3x

Substitute 1 for x in f(x) = -x² - 3x

f(1) = -(1)² - 3(1)

Evaluate

f(1) = -4

In the function f(-7), we have the x value to be

x = -7

This x value is at the domain x ≤ -4

So, we make use of

f(x) = |x + 8| - 9

Substitute -7 for x in f(x) = | x + 8| - 9

f(-7) = |-7 + 8| - 9

Evaluate

f(-7) = -8

Recall that

f(1) - f(-7)

So, we have

f(1) - f(-7) = -4 - -8

This gives

f(1) - f(-7) = 4

Hence, the value of f(1) - f(-7) is 4

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Answer:

x = 8, y = 7

Step-by-step explanation:

The two equations are

y = 3x - 17      [1]

y = x -1           [2]

Substitute y = x - 1 in the first equation

x - 1 = 3x - 17

==> x - 3x = -17 + 1

==> -2x = -16

==> x = -16/-2 = 8

Sub for x in [2]

y = 8 - 1 = 7

Here is the completed table:

Taco                   3         9            13.5

Sour cream         2        6           9

The amount of taco seasoning that is needed to make 15 cups of sour cream is 22.50 teaspoons.

Ratio expresses the relationship between two or more numbers. It shows the number of times that one value is contained within other value(s).

Given the information in the table, the amount of taco seasoning needed for 1 cup of sour cream is 2/3.

The amount of sour cream needed for 1 teaspoon of taco seasoning is 3/2.

The teaspoon of taco seasoning needed for 9 cups of sour cream : 3/2 x 9 = 13.5 teaspoons

Cups of sour cream needed for 9 teaspoons of taco seasoning : 2/3 x 9 = 6 cups

The teaspoon of taco seasoning needed for 15 cups of sour cream : 3/2 x 15 = 22.50

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The remaining amount of salt that Tom needed to pour was 67.59 grams.

To subtract in mathematics is to take something away from a group or a number of objects.

In other meaning, subtraction is a mathematical operation such that two values are going to subtract and give a resultant value.

The group's total number of items decreases or becomes lower when we subtract from it.

As per the given,

The total amount that Tom needs to pour = 84.99 grams

Amount poured = 17.4 grams

Remaining = 84.99 grams - 17.4 grams = 7.59 grams

Hence "The remaining amount of salt that Tom needed to pour was 67.59 grams".

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Answer:

x - 9y = -45

Step-by-step explanation:

y = 1/9 x + 5  Multiply all the way through by 9 to clear the fraction

9y = x + 45   -9y from  both sides

0 = x - 9y + 45  Subtract 45 from both sides

-45 = x  - 9y  You can rewrite

x - 9y = --45

Answer:

7/5 decimal form- 1.4

Step-by-step explanation:

Hope this helped ! :D

Answer:

$2376

Step-by-step explanation:

Money Marc withholds from his gross income in taxes and deductions: We can do this by multiplying his gross income by the withholding rate of 28%, which gives us 0.28 * $3,300 = $<<0.28*3300=924>>924.

Next, we need to subtract this amount from Marc's gross income to find his net pay. This gives us $3,300 - $924 = $<<3300-924=2376>>2376. Therefore, Marc's monthly net pay is $2376.

the answer is prolly not B

Answer:

m=4

Step-by-step explanation:

3.6m=14.4

Divide both sides by 3.6

3.6m=14.4

/3.6.   /3.6

m=4

hopes this helps please mark brainliest

Answer:

m = 4

Step-by-step explanation:

Answer:  9 ÷ 5830 = 0 with remainder 9 ( 0 R 9 )

This is the simple form of the given equation [tex]\frac{(-4x^4z^3 - 5x^4z^5 + 8) }{(x^2z^2)}[/tex]

What is the polynomial equation?

An algebraic equation, also known as a polynomial equation, in mathematics, is a formula of the form P=0, where P is a polynomial with coefficients in some field, typically the field of the rational numbers.

We have,

(32 x³ z² - 16 x⁷ z⁵ - 20 x⁷ z⁷) ÷ (4x⁵ z⁴)

(32 x³z² - 16 x⁷z⁵ - 20 x⁷z⁷) * 1/(4x⁵z⁴)

[tex]\frac{(32 x^3z^2 - 16 x^7z^5 - 20x^7z^7) }{(4x^5z^4)}[/tex]

[tex]=\frac{(-4x^4z^3 - 5x^4z^5 + 8) }{(x^2z^2)}[/tex]

Hence, this is the simple form of the given equation [tex]\frac{(-4x^4z^3 - 5x^4z^5 + 8) }{(x^2z^2)}[/tex]

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The domain of the function f(x)=x+10 is (-∞, ∞) and for the function g(x)=x² is (-∞, ∞).

If a formula specifies a real function f, it may not be defined for some values of the variable. The natural domain or domain of definition of f is the set of real numbers on which the formula can be evaluated to a real number in this case. A partial function is often referred to just as a function, and its natural domain is referred to simply as its domain.

Given,  f(x) = x + 10

g(x)=x²

The domain for the function f(x)=x + 10

So, the domain of f(x)=x+10 is (-∞, ∞)

The domain for the function g(x)=x²

The expression's domain is only real numbers, with the exception of places where it is undefined. Because there is no real number in this scenario, the expression is undefined.

So, the domain of the function g(x)=x² is (-∞, ∞)

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Answer:

1

Step-by-step explanation:

Because 0 is nothing 1 is equal to 7/7 and 1/2 is equal to 3.5/7 so 7/7 is closer to 6/7

[tex]\textit{height of an equilateral triangle}\\\\ h=\cfrac{s\sqrt{3}}{2} ~~ \begin{cases} s=sides\\[-0.5em] \hrulefill\\ s=2 \end{cases}\implies h=\cfrac{2\sqrt{3}}{2}\implies h=\sqrt{3}\implies h\approx 1.7[/tex]

Answer:

Your answer is 6.23

Step-by-step explanation:

(attached)

Answer: -13x+35

Hope this helps! :)

Step-by-step explanation:

-5(2x-7)-3x

(1. Distribute)

-10x+35-3x  (2 negatives make a positive when multiplying and dividing)

(2. Combine like terms)

-13x+35  (Add the negatives)

The annual tax for the plot based on the triangle and the side lengths is $1488

From the question, we have the following parameters that can be used in our computation:

Annual tax per foot = $12

Shape of the land = Triangle

Parameters of the triangle are represented as

Angle between sides = 80 degrees

Sides = 46 ft and 28 ft

The side represented as "Street" is calculated as

Street = The square root of Sum of the squares of the other sides - 2 * the product of the other sides * the cosine of the angle between them

Mathematically, this is represented as

Street = √46² + 28² - 2 * 46 * 28 * cos(80)

Evaluate

Street = 50

So, the perimeter of the land is

Perimeter = 50 + 46 + 28

Perimeter = 124 foot

Recall that:

Annual tax per foot = $12

So, we have

Yearly annual tax per foot = $12 * 124

Evaluate

Yearly annual tax per foot = $1488

Hence, the yearly annual tax per foot = $1488

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Answer:

-6.81 < 0.979, -0.87 > 5%

Step-by-step explanation:

1. Compare the whole numbers of each pair: 6 < 0 and -0 < 5

2. Compare the decimal numbers of each pair: 0.81 < 0.979 and 0.87 > 0.05

3. Combine the two comparisons to get the final result: -6.81 < 0.979 and -0.87 > 5%

Answer:

93.5

Step-by-step explanation:

Answer:

2 7/15 miles

Step-by-step explanation:

1 4/5 = 1 + 4/5 = 5/5 + 4/5 = (5+4)/5 = 9/5

Then:

1 4/5 + 2/3 = 9/5 + 2/3

9/5 = 27/15

2/3 = 10/15

Then:

9/5 + 2/3 = 27/15 + 10/15 = (27+10)/15

= 37/15

37/15 = 30/15 + 7/15 = 2 + 7/15

= 2 7/15

Answer:

Pemdas?

Step-by-step explanation:

Parantheses

Exponents

Multiplication

Division

Addition

Subtraction.

Answer:

Uhm…

Step-by-step explanation:

You either add, divide, multiply, or divide

Das is how we solve equations

Using the secant-secant theorem,

[tex](4)(6)=(3)(2x+8) \\ \\ 24=3(2x+8) \\ \\ 8=2x+8 \\ \\ 2x=0 \\ \\ x=0 \\ \\ \implies LK=2(0)+5=\boxed{5}[/tex]

Answer: 0.38 is correct!

Step-by-step explanation:

0.50 - 0.12 = 0.38
Your answer is correct

The true statement is (c) SSS; two congruent sides are given and the third side is congruent by the Reflexive Property of Congruence.

Congruent triangles are those that are exactly the same size and shape. Congruent is represented by the symbol ≅ When the three sides and three angles of one triangle match the dimensions of the three sides and three angles of another triangle, they are said to be congruent.

It is given that:

The sides marked with II are congruent.

The triangles are congruent.

Thus, the true statement is (c) SSS; two congruent sides are given and the third side is congruent by the Reflexive Property of Congruence.

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Answer:

2x^(5/2)

Step-by-step explanation:

The square root of 4x^10 is (4x^10)^1/2.

Therefore, the square root of 4x^10 is (2x^5)^1/2.

This means that the square root of 4x^10 is 2x^(5/2).

Answer:-2

Step-by-step explanation:

Step 1: Write this in slope-intercept form

y=mx+b

Step 2: Plug in the known values

m is the slope, x is the given x value, and y is the given y value

4=2(3)+b

Step 3: Solve for the y-intercept

the y-intercept is b, so all we need to do is solve for b

4=6+b

subtract 6 from both sides so that y is isolated

Answer: b=-2

The y-intercept is -2

Answer:

Plan B: 5n > 8

Plan A: 3n + 8 < 5n