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3 years ago

2-An 83cm piece is cut from a length of ribbon measuring 1.3 metres. What length is left?

Mathematics

1 answer:

Delvig [45]3 years ago

3 0

Answer:

81.7cm is the length left behind

Step-by-step explanation:

83 -1.3 =81.7

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Two equiangular decagons are congruent. Sometimes/Always/Never

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Answer:

Two equiangular decagons are sometimes congruent.

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3 years ago

Find the coefficient of correlation between and X and Y if covariance between X and Y is 15 and the variance of X and Y are resp

IRINA_888 [86]

Answer:

0.95

Step-by-step explanation:

$Correlation \ coefficient \ (r) = \dfrac{covaraince \ between \ X \ and \ Y }{SD_X \times SD_Y }$

$Correlation \ coefficient \ (r) = \dfrac{15 }{10^{1/2} \times 25^{1/2} }$

$Correlation \ coefficient \ (r) = \dfrac{15 }{3.162 \times 5 }$

$Correlation \ coefficient \ (r) = \dfrac{15 }{15.81 }$

$Correlation \ coefficient \ (r) \simeq 0.95$

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3 years ago

Find the product of 4h(6ah) please tell the correct answer:

svlad2 [7]

Answer:

24a $h^{2}$

Step-by-step explanation:

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3 years ago

The equation 5x-10y=10 is written in standard form. What is the first step when solving for x?

sattari [20]

Isolate the y variable on one side.

3 0

3 years ago

Read 2 more answers

Please help ASAP! Due tonight!

Trava [24]

Answer:

D. x = √17

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Trigonometry

Pythagorean Theorem: a² + b² = c²

Step-by-step explanation:

Step 1: Define

leg a = 4

leg b = 1

hypotenuse c = x

Step 2: Solve for x

Substitute: 4² + 1² = x²
Exponents: 16 + 1 = x²
Add: 17 = x²
Isolate x: √17 = x
Rewrite: x = √17

3 0

3 years ago