3 years ago

Which two comparisons are true?

Mathematics

1 answer:

uranmaximum [27]3 years ago

8 0

Answer:

The answer is b and d

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Create your own word problem: dividing a fraction by a whole number?

emmasim [6.3K]

Three fourths divided by 3. 3/4 / 3

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3 years ago

What is the area of the composite figure?

ivolga24 [154]

Answer:

745.4 cm^2

Step-by-step explanation:

The composite figure is made up of a rectangle 25 cm by 20 cm and a semicircle of radius 12.5 cm.

We add the two areas to find the total area.

total area = area of rectangle + area of semicircle

TA = LW + (1/2)(pi)r^2

TA = (25 cm)(20 cm) + (1/2)(3.14159)(12.5 cm)^2

TA = 500 cm^2 + 245.4 cm^2

TA = 745.4 cm^2

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3 years ago

Like for like ? follow for follow ?

VikaD [51]

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Step-by-step explanation:

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3 years ago

A ball is thrown from an initial height of 1 meter with an initial upward velocity of 11 m/s. The ball's height h (in meters) af

bonufazy [111]

Answer:

$t=0.64$ and $t=1.56$ seconds

Step-by-step explanation:

$h=1+11t-5t^2\\\\6=1+11t-5t^2\\\\0=-5+11t-5t^2\\\\0=-5t^2+11t-5\\\\t=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\ \\t=\frac{-11\pm\sqrt{11^2-4(-5)(-5)}}{2(-5)}\\\\t=\frac{-11\pm\sqrt{121-100}}{-10}\\ \\t=\frac{-11\pm\sqrt{21}}{-10}\\\\t=\frac{11}{10}\pm\frac{\sqrt{21}}{10}\\ \\t_1\approx0.64\\\\t_2\approx1.56$

Therefore, the values of t for which the ball's height is 6 meters is $t=0.64$ and $t=1.56$ seconds.

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2 years ago

Helllllpppppppppp! me plz

Taya2010 [7]

use Pythagoras theorem,

a² + b² = c²

x² + 12² = 14²

x = √(14² - 12²)

x = 7.2111

x = 7.21 units.

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3 years ago