3 years ago

Pls help me :)))))))))))

Mathematics

2 answers:

77julia77 [94]3 years ago

6 0

Answer:

im stuck on this too, i hope someone provides the right answer ;(

Step-by-step explanation:

docker41 [41]3 years ago

4 0

Answer:

330ft²

Step-by-step explanation:

Area of figure = Area of rectangle + Area of semicircle

= lb + pi r²/2

= 10 x 8 + 3.1 x 4 x 4/2 ( as 8 is diameter)

= 80 ft² + 248 ft²

= 328 ft² => 330ft²

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What are the solutions to the following system of equations? y = x2 + 3x − 7 3x − y = −2 (2 points) (3, 11) and (−3, −7) (11, 3)

Minchanka [31]

ANSWER

(3, 11) and (−3, −7)

EXPLANATION

The given system of equations are:

$y = {x}^{2} + 3x - 7$

and

$3x - y = - 2$

or

$y = 3x + 2$

We equate the two equations to obtain,

${x}^{2} + 3x - 7 = 3x + 2$

We rewrite in standard quadratic form to obtain,

${x}^{2} + 3x - 3x - 7 - 2 = 0$

This simplifies to

${x}^{2}- 9= 0$

We solve for x to obtain,

${x}^{2} = 9$

$x = \pm \sqrt{9}$

$x = \pm 3$

$x = 3 \: or \: x = - 3$

When
$x = 3$

$y = 3(3) + 2 = 11$

When x=-3,

$y = 3( - 3) + 2 = - 7$

Therefore the solution for the system is (3, 11) and (−3, −7).

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3 years ago

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The diameter of Mercury is approximately 4.9×1034.9×103 kilometers. The diameter of Saturn is approximately 1.2×1051.2×105 kilom

mrs_skeptik [129]

To get the difference between the two diameters, all you have to do is subtract the smaller diameter (Mercury) from the larger diameter (Saturn) as follows:

Difference between the two diameters =diameter of Saturn-diameter of Mercury
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4 years ago

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*Simple math question* The eighth grade class at grade school has 15 girls and 14 boys. How many different boy-girl dates can be

AlladinOne [14]

15*14=210
210 boy-girl dates

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3 years ago

Please help with this question!!!!!

Finger [1]

72 in2 because you add the area of everything

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