100% -

Solve for the variable: -15r – 8 = 37 A. -5 B. -3 C. -2 D. 3

aksik [14]

Hello! I would be happy to help you with your math problem. For this problem, we plug in the values until we find what fits. In this case, we have to find what is true, or, in other words, equals 37.

The answer to your question would be B -- -3. Here is why.

-15*-3-8=37.

Hope this helps!

8 0

3 years ago

Read 2 more answers

8/x2+6x times 2x product

sergejj [24]

Answer:

4 • (3x4 + 2)

———————

x2

Step-by-step explanation:

Step 1 :

8

Simplify ——

x2

Equation at the end of step 1 :

8

—— + 12x2

x2

Step 2 :

Rewriting the whole as an Equivalent Fraction :

2.1 Adding a whole to a fraction

Rewrite the whole as a fraction using x2 as the denominator :

12x2 12x2 • x2

12x2 = ———— = —————————

1 x2

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

2.2 Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

8 + 12x2 • x2 12x4 + 8

————————————— = ————————

x2 x2

Step 3 :

Pulling out like terms :

3.1 Pull out like factors :

12x4 + 8 = 4 • (3x4 + 2)

Polynomial Roots Calculator :

3.2 Find roots (zeroes) of : F(x) = 3x4 + 2

Polynomial Roots Calculator is a set of methods aimed at finding values of x for which F(x)=0

Rational Roots Test is one of the above mentioned tools. It would only find Rational Roots that is numbers x which can be expressed as the quotient of two integers

The Rational Root Theorem states that if a polynomial zeroes for a rational number P/Q then P is a factor of the Trailing Constant and Q is a factor of the Leading Coefficient

In this case, the Leading Coefficient is 3 and the Trailing Constant is 2.

The factor(s) are:

of the Leading Coefficient : 1,3

of the Trailing Constant : 1 ,2

Let us test ....

P Q P/Q F(P/Q) Divisor

-1 1 -1.00 5.00

-1 3 -0.33 2.04

-2 1 -2.00 50.00

-2 3 -0.67 2.59

1 1 1.00 5.00

1 3 0.33 2.04

2 1 2.00 50.00

2 3 0.67 2.59

Polynomial Roots Calculator found no rational roots

Final result :

4 • (3x4 + 2)

—————————————

x2

Processing ends successfully

plz mark me as brainliest :)

8 0

3 years ago

Find the percent change from the first value to the second 50;31

tiny-mole [99]

Answer:

-0.38%

Step-by-step explanation:

Divide 31 by 50. 31 / 50 = 0.62.

1 - 0.62 = 0.38

Since it is a decrease in change the percent change is negative.

-0.38%

6 0

3 years ago

Determine the value of k

KATRIN_1 [288]

Answer:

$\displaystyle k = 6$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Algebra I

Functions
Function Notation

Algebra II

Piecewise Functions

Calculus

Limits
Continuity

Step-by-step explanation:

Step 1: Define

Identify

Continuous at x = 2

$\displaystyle f(x) = \left \{ {{2x^2 \ if \ x < 2} \atop {x + k \ if \ x \geq 2}} \right.$

Step 2: Solve for k

Definition of Continuity: $\displaystyle \lim_{x \to 2^+} 2x^2 = \lim_{x \to 2^-} x + k$
Evaluate limits: $\displaystyle 2(2)^2 = 2 + k$
Evaluate exponents: $\displaystyle 2(4) = 2 + k$
Multiply: $\displaystyle 8 = 2 + k$
[Subtraction Property of Equality] Subtract 2 on both sides: $\displaystyle 6 = k$
Rewrite: $\displaystyle k = 6$

Topic: AP Calculus AB/BC (Calculus I/II)

Unit: Limits - Continuity

Book: College Calculus 10e

4 0

3 years ago

Read 2 more answers

Store A

olga2289 [7]

Answer:

72

Step-by-step explanation:

3 0

3 years ago