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3 years ago

Which one ,, giving 35 points to the right person

Mathematics

1 answer:

dybincka [34]3 years ago

7 0

Answer:

31.5

Step-by-step explanation:

Triangular prism formula for volume is V = 1/2 a x c x h

V = 1/2 7 x 4.5 x 2

V = 1/2 63

V = 31.5 in 3

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prohojiy [21]

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3 years ago

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3 years ago

Laura’s overall monthly living expenses are $1,600. How much money does she have at the end of the month to put into savings?

EastWind [94]

Step-by-step explanation:

The question has missing details nevertheless we can make head way with the information on ground.

Given that Laura's overall monthly living expenses are $1,600

in order to calculate her savings for the month we need to know her income for the month, that is the overall sum she has at hand before incurring any expenses(this is the missing detail).

Say this overall amount is "x"

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7 0

3 years ago

PLZZZ HELP Find the inverse of a 2x2 matrix Plz give answer .

liraira [26]

Answer:

$\left[\begin{array}{cc}-\frac{1}{2}&\frac{1}{6}\\-\frac{1}{2}&\frac{1}{3}\\\end{array}\right]$

Step-by-step explanation:

If a 2x2 matrix is given as:

$\left[\begin{array}{cc}a&b\\c&d\\\end{array}\right]$

The inverse is:

$\frac{1}{ad-bc}\left[\begin{array}{cc}d&-b\\-c&a\\\end{array}\right]$

Our matrix given is:

$\left[\begin{array}{cc}-4&2\\-6&6\\\end{array}\right]$

Using the formula, let's find the inverse:

$\frac{1}{ad-bc}\left[\begin{array}{cc}d&-b\\-c&a\\\end{array}\right]\\=\frac{1}{(-4)(6)-(-6)(2)}\left[\begin{array}{cc}6&-2\\6&-4\\\end{array}\right]\\=\frac{1}{-12}\left[\begin{array}{cc}6&-2\\6&-4\\\end{array}\right]\\=\left[\begin{array}{cc}-\frac{1}{2}&\frac{1}{6}\\-\frac{1}{2}&\frac{1}{3}\\\end{array}\right]$

4 0

3 years ago

Find the area of a semicircle with a diameter equal to 8 meters (use pi=3.14):* d=8 m D

KatRina [158]

Answer:

you do 8/2 which is 4, so that is ur radius

you do 3.14*4*4=50.24

there is ur answer!

Step-by-step explanation:

6 0

3 years ago