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3 years ago

Can ya'll help me with this 7r+8>64-r

Mathematics

1 answer:

ira [324]3 years ago

7 0

Answer:

r > 7

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define inequality

7r + 8 > 64 - r

Step 2: Solve for r

Add r to both sides: 8r + 8 > 64
Subtract 8 on both sides: 8r > 56
Divide 8 on both sides: r > 7

Here we see that any value r greater than 7 would work as a solution to the inequality.

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For a package to qualify for a certain postage rate, the sum of its length and girth cannot exceed 85 inches. If the girth is 63

tester [92]

Answer:

Length of package can be = 22 inches

Step-by-step explanation:

Given:

For a package to qualify for a certain postage rate, the sum of its length and girth cannot exceed 85 inches

To find length of package when girth of package is = 63 inches

Solution:

Let length of package be = $l$ inches

Let girth length of package be = $g$ inches

Sum of length and girth of package = $(l+g)$ inches

To qualify for a certain postage rate the sum of length and girth should not exceed 85 inches.

Thus, the inequality representing the situation can be given as:

$l+g\leq 85$

We are given girth of package is = 63 inches

So, inequality to find length would be:

$l+63\leq 85$

Subtracting both sides by 63.

$l+63-63\leq 85-63$

$l\leq 22$ inches

So, length should not exceed 22 inches in order to qualify.

Thus, the maximum length of package to qualify for the postal rate must be = 22 inches

3 0

3 years ago

For what value(s) of p will the equation x^2=p have 2 real number solutions? Explain your reasoning?

Stolb23 [73]

Answer:

p > 0

Step-by-step explanation:

x² = p

x² - p = 0

A = 1, B = 0, C = -p

For 2 real roots:

B² - 4AC > 0

0² - 4(1)(-p) > 0

4p > 0

p > 0

6 0

3 years ago

What is the intermediate step in the form (x + a)2 = b as a result of completing the

irina [24]

Answer:

So the intermediate step in question is (x - 10)² = 66

Step-by-step explanation:

Let's find out:

x² + 34 = 10x

x² - 10x = -34

x² - 20x + 100 = 66

(x - 10)² = 66

x - 10 = ± √66

x = 10 ± √66

x ≈ 18.12, 1.88

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3 years ago

Help whats the answer need it now im in a test!

Allisa [31]

Answer:

7 ton

Step-by-step explanation:

6 0

3 years ago

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I need help ASAP for my homework

bogdanovich [222]

Answer:

slope of line ax + by = c is -a/b

so, slope of 7x +2y =5 is -7/2

3 0

3 years ago

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