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3 years ago

Find the measure of angle 1

Mathematics

1 answer:

WARRIOR [948]3 years ago

7 0

Answer:

m∠1 = 70°

Step-by-step explanation:

Since the triangle is isosceles, the two base angles are congruent

The sum of the measures of the angles = 180

So, 180 - 40 = 140 = 2m∠1

m∠1 = 140/2 = 70°

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Answer:

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Step-by-step explanation:

Given the data:

X : 52 48 49 52 53

Sample mean = ΣX / n

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Sample mean, xbar = 254 / 5 = 50.8

Standard deviation, s = 2.17 (using calculator)

The standard error (SE) : s/√n =2.17/√5 = 0.970

The degree of freedom, df = n-1

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Tscore(0.05, 4) = 2.776

Confidence interval :

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2 years ago

What is the rate of Change of the line through (1,-3) and (0,-1)

andreyandreev [35.5K]

Answer:

$m=-2$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Point (1, -3)

Point (0, -1)

Step 2: Find slope m

Substitute in points into the slope formula to find rate of change

Substitute [SF]: $m=\frac{-1+3}{0-1}$
Add/Subtract: $m=\frac{2}{-1}$
Divide: $m=-2$

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