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3 years ago

8 in. 4 in. 13 in. Find the area of a trapezoid

Mathematics

1 answer:

insens350 [35]3 years ago

4 0

Answer:

the area is 68

Step-by-step explanation:

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A vendor at a craft show sold items for $4.50, $6.00, and $7.50.

Mamont248 [21]

Answer:

You could either use the second or fourth system as each of these choices have x+y+z=87 in the first equation.

Step-by-step explanation:

Answer(s) is above. Hope it helps!

5 0

3 years ago

NEED HELP FAST!!!

Leya [2.2K]

None of them are right triangles.

Hope This Helps!!!

5 0

4 years ago

Read 2 more answers

Worth 25 points!

MrRissso [65]

Answer:

1) $\sqrt{-48}=4\sqrt{3} \ i$

2) $\sqrt{-63}=3\sqrt{7} \ i$

3) $\sqrt{-72}=6\sqrt{2} \ i$

4) $\sqrt{-24}=4\sqrt{6} \ i$

5) $\sqrt{-84}=2\sqrt{21} \ i$

6) $\sqrt{-99}=3\sqrt{11} \ i$

Step-by-step explanation:

We need to simply the following :

<u>Note: For all questions given we know that </u> $\sqrt{-1}=i$ <u> using it in all the given questions.</u>

1) $\sqrt{-48}$

Factors of 48 are: 2x2x2x2x3

$\sqrt{-48}\\=\sqrt{48}\sqrt{-1} \\=\sqrt{2\times2\times2\times2\times3}\ i\\= \sqrt{2^2\times2^2\times3}\ i\\=2\times2\sqrt{3} \ i \\=4\sqrt{3} \ i$

2) $\sqrt{-63}$

Factors of 63 are: 3x3x7

$\sqrt{-63}\\=\sqrt{63}\sqrt{-1} \\=\sqrt{3\times3\times7}\ i\\= \sqrt{3^2\times7}\ i\\=3\sqrt{7} \ i$

3) $\sqrt{-72}$

Factors of 72 are: 2x2x2x3x3

$\sqrt{-72}\\=\sqrt{72}\sqrt{-1} \\=\sqrt{2\times2\times2\times3\times3}\ i\\= \sqrt{2^2\times3^2\times2}\ i\\=2\times3\sqrt{2} \ i \\=6\sqrt{2} \ i$

4) $\sqrt{-24}$

Factors of 24 are: 2x2x2x3

$\sqrt{-24}\\=\sqrt{24}\sqrt{-1} \\=\sqrt{2\times2\times2\times3}\ i\\= \sqrt{2^2\times2\times3}\ i\\=2\sqrt{2\times3} \ i \\=2\sqrt{6} \ i$

5) $\sqrt{-84}$

Factors of 84 are: 2x2x3x7

$\sqrt{-84}\\=\sqrt{84}\sqrt{-1} \\=\sqrt{2\times2\times3\times7}\ i\\= \sqrt{2^2\times3\times7}\ i\\=2\sqrt{21} \ i$

6) $\sqrt{-99}\\$

Prime factors of 99 are: 3x3x11

$\sqrt{-99}\\=\sqrt{99}\sqrt{-1} \\=\sqrt{3\times3\times11}\ i\\= \sqrt{3^2\times11}\ i\\=3\sqrt{11} \ i \\=3\sqrt{11} \ i$

6 0

3 years ago

"you have just become a parent of twins and are told they are both girls. given this information, what is the probability that t

GaryK [48]

The answer should be half (Can be written as .5 or 1/2) because there are only two types of twins, fraternal and identical. So therefore the probability is half

3 0

3 years ago

Answer these In scientific notation with work shown, adding scientific notation.

vichka [17]

Answer:

1. $9.9 \times 10^{-1} + 5.2 \times 10^{-2} = 104.2 \times 10^{-2}$

2. $3.24 \times 10^{5} + 8.3 \times 10^{1} =32408.3 \times 10^{1}$

3. $1.24 \times 10^{0} + 5 \times 10^{-1} = 13.64 \times 10^{-1}$

Step-by-step explanation:

1) $9.9 \times 10^{-1} + 5.2 \times 10^{-2}$

Now, $9.9 \times 10^{-1}$ = $99 \times 10^{-2}$

So, $99 \times 10^{-2} + 5.2 \times 10^{-2}$ = $104.2 \times 10^{-2}$

2. $3.24 \times 10^{5} + 8.3 \times 10^{1}$

Now, $3.24 \times 10^{5}$ = $32400 \times 10^{1}$

So, $32400 \times 10^{1} + 8.3 \times 10^{1}$ = $32408.3 \times 10^{1}$

3. $1.24 \times 10^{0} + 5 \times 10^{-1}$

Now, $1.24 \times 10^{0}$ = $12.4 \times 10^{1-}$

So, $1.24 \times 10^{0} + 12.4 \times 10^{1-}$ = $13.64 \times 10^{-1}$

8 0

4 years ago