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3 years ago

PLEASE HELP

Mathematics

1 answer:

nirvana33 [79]3 years ago

6 0

You don't say whether this is a right triangle or not.

Assuming it is a right triangle, then we use the Pythagorean Theorem to determine the length of the hypotenuse:

(hypo) = (length of third side) = √(12^2 + 4^2) = √(144+16) = √160 = 4√10.

This is approx. 12.65 inches. Since this does not match any of the possible answer choices, we'll have to take a different approach to answering this question.

Given that 2 sides of the given triangle are 12 and 4 inches, respectively, we see that the 3rd side has to be longer than 8 inches; otherwise we'd have three line segments on the same line, not forming a triangle.

By this reasoning, 9 inches is the only possible answer that could be correct. With sides 12, 9 and 4 inches, the triangle would be obtuse and appear quite flat, but not be part of a straight line as with a third side of 8.

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How can I make liters into deciliters?

Mila [183]

Answer:

Multiply liters by 10.

1 liters= 10 deciliters

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4 years ago

Check my answers?

hichkok12 [17]

Answer:

3. D) $(-8, -17)$

2. D) $(-15, -16)$

1. B) $(3, -4)$

Step-by-step explanation:

{y = 3x + 7

{y = x - 9

x - 9 = 3x + 7

-3x - 3x

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−2x - 9 = 7

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−2x = 16

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$-8 = x$ [Plug this back into both equations above to get the y-coordinate of −17]; $-17 = y$

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{−4x + 3y = 12

{−2x + 3y = −18

−½[−4x + 3y = 12]

{2x - 1½y = −6 >> New Equation

{−2x + 3y = −18

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1½y = −24

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1½ 1½

$-16 = y$ [Plug this back into both equations above to get the x-coordinate of −15]; $-15 = x$

__________________________________________________________

{−10x - 3y = −18

{−7x - 8y = 11

−⅜[−7x - 8y = 11]

{−10x - 3y = −18

{2⅝x + 3y = −4⅛ >> New Equation

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−7⅜x = −22⅛

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$3 = x$ [Plug this back into both equations above to get the y-coordinate of −4]; $-4 = y$

I am joyous to assist you anytime.

5 0

4 years ago

Add. write your answer in simplest form.<br> -4 _/135 + 7 _/15

Zarrin [17]

$\huge\quad\qquad\underline{{\sf Answer}}$

Let's solve ~

$\qquad \sf \dashrightarrow \: - 4 \sqrt{135} + 7 \sqrt{15}$

$\qquad \tt \dashrightarrow \: - 4 \sqrt{5 \times3 \times 3 \times 3} + 7 \sqrt{15}$

$\qquad \tt \dashrightarrow \:( - 4 \times 3) \sqrt{5 \times 3} + 7 \sqrt{15}$

$\qquad \tt \dashrightarrow \: - 12 \sqrt{15 } + 7 \sqrt{15}$

$\qquad \tt \dashrightarrow \: - 5 \sqrt{15}$

7 0

3 years ago

A large jar is filled with jelly beans of different colors. there are 40 black, 24 red, 12 green, 24 orange, and 20 clear ones.

Lostsunrise [7]

The probability is 3/10

8 0

3 years ago

It’s giving me symbols to add

Natalija [7]

Answer:

I. Ella packed 70 books more than Ray.

II. Ray packed 580 books.

III. Ella packed 650 books.

Step-by-step explanation:

Given the following data;

Ray = 29 boxes of 20 books

Ella = 26 boxes with 25 books

To find the total number of books packed by Ray;

Total for Ray (Ray packed) = 29 * 20

Total for Ray = 580 books.

To find the total number of books packed by Ella;

Total for Ella (Ella packed) = 26 * 25

Total for Ella = 650 books.

Next, we find the difference between the books packed by Ella and Ray;

Difference = Ella - Ray

Difference = 650 - 580

Difference = 70 books

5 0

3 years ago