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3 years ago

BRAINLIEST to correct answer!! (Ignore the answer already selected- I don’t know if it’s correct)

Mathematics

1 answer:

VMariaS [17]3 years ago

5 0

Answer:

1.Factor numerator and denominator

2.reduce the fraction

3.rewrite any remaining expressions in the numerator an denominator

Step-by-step explanation:

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Elena is designing a paint can with thickness ttt millimeters and height hhh centimeters. She calculates that the thickness of t

Degger [83]

Answer:

$t \ge h$ and $t + 0.5h \le 12.0$

Step-by-step explanation:

Given

$t= thickness$

$h =height$

From the first statement, we have that:

$t\ mm \ge 0.1 * h\ cm$

Convert mm to cm

$t\ * 0.1*cm \ge 0.1 * h\ cm$

$t\ *0.1 \ge 0.1 * h$

Divide both sides by 0.1

$t \ge h$

From the second statement, we have that:

$Cost \le 12.2$

Substitute 0.2 + t + 0.5h for Cost

$0.2 + t + 0.5h \le 12.2$

Collect Like Terms:

$t + 0.5h \le 12.2-0.2$

$t + 0.5h \le 12.0$

So, the inequalities are:

$t \ge h$ and $t + 0.5h \le 12.0$

8 0

3 years ago

Solve using the quadratic formula. Approximate answers to the nearest tenth.

-BARSIC- [3]

Answer:

$\displaystyle x=-1, \ 8$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Standard Form: ax² + bx + c = 0
Quadratic Formula: $\displaystyle x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}$

Step-by-step explanation:

Step 1: Define

Identify variables

x² - 7x - 8

↓

a = 1, b = -7, c = -8

Step 2: Solve for x

Substitute in variables [Quadratic Formula]: $\displaystyle x=\frac{7 \pm \sqrt{(-7)^2-4(1)(-8)}}{2(1)}$
[√Radical] Evaluate exponents: $\displaystyle x=\frac{7 \pm \sqrt{49-4(1)(-8)}}{2(1)}$
[√Radical] Multiply: $\displaystyle x=\frac{7 \pm \sqrt{49 + 32}}{2(1)}$
[√Radical] Add: $\displaystyle x=\frac{7 \pm \sqrt{81}}{2(1)}$
[√Radical] Evaluate: $\displaystyle x=\frac{7 \pm 9}{2(1)}$
Multiply: $\displaystyle x=\frac{7 \pm 9}{2}$
Add/Subtract: $\displaystyle x=\frac{-2}{2}, \ \frac{16}{2}$
Divide: $\displaystyle x=-1, \ 8$

5 0

3 years ago

Iliana performed an experiment by spinning a spinner a set number of times and noting the color on which the spinner landed.

tatiyna

An experimental probability is given by the number of observations divided by the number of trials.

From the given table it can be seen that the color with the highest frequency is red with 9 observations while that number of trials is given by the sum of the individual observations, i.e 7 + 9 + 6 + 8 = 30

Therefore, the experimental probability of the highest frequeny is given by 9 / 30 = 0.3

7 0

4 years ago

Read 2 more answers

NEED HELP PLEASE BEEN ASKING FOR 30 MINUTES WILL MARK BRAINIEST PLEASE HELP

liraira [26]

Answer:

Because we are adding up our 2 equations.

Step-by-step explanation:

2.2b + 1.6b = 3.8b

3.6g + 1.2g = 4.8g

9.35 + 3.68 = 13.03

6 0