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3 years ago

Could the numbers 9,10,19 be a triangle

Mathematics

1 answer:

IRINA_888 [86]3 years ago

3 0

Answer:

I wasn't sure if you meant centimeters, inches or degrees. But since I don't know, I'll answer all three.

Step-by-step explanation:

Centimeters- Possible

Inches- Possible (Extremely big. I suggest using a big whiteboard to draw out)

Degrees- Impossible (All degrees in a triangle have to add up to 180)

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Simplify the expression, only odds 9-17

Elodia [21]

All exercises involve the same concept, so I'll show you how to do the first, then you can apply the exact same logic to all the others.

The first thing you need to know is that, when a certain quantity multiplies a parenthesis, you can distribute that number to every element in the parenthesis. This means that

$a(b+c) = ab+ac$

So, $a$ is multiplying the parenthesis involving $b$ and $c$ , and we distributed it: $a$ multiplies both $b$ and $c$ in the final result.

Secondly, you have to know how to recognize like terms, because they are the only terms you can sum. Two terms can be summed if they have the same literal expression. So, for example, you cannot sum $3x+2y$ , and neither $5x^2-4x$ exponents count.

But you can su, for example,

$5x-3x = (5-3)x = 2x$

$23xy^2z^6 - 17xy^2z^6 = 6xy^2z^6$

So, take for example exercise 9:

$1.2(7x-5y) - (10y-4.3x)$

We distribute the 1.2 through the first parenthesis:

$1.2(7x-5y) = 1.2 \cdot 7x - 1.2 \cdot 5y = 8.4x-6y$

And you can distribute the negative sign through the second parenthesis (it counts as a -1 to distribute):

$- (10y-4.3x) = -10y+4.3x$

So, the expression becomes

$8.4x-6y-10y+4.3x$

Now sum like terms:

$(8.4+4.3)x + (-6-10)y = 12.7x - 16y$

7 0

3 years ago

Please help me I appreciate it

Naddik [55]

Answer:

$\displaystyle Point \ A(-2, 5)\\Point \ B(5, 5)\\d = 7 \ units$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Reading a Cartesian coordinate plane
Coordinates

Algebra II

Distance Formula: $\displaystyle d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point A(-2, 5)

Point B(5, 5)

Step 2: Find distance d

Simply plug in the 2 coordinates into the distance formula to find distance d

Substitute in points [DF]: $\displaystyle d = \sqrt{(5--2)^2+(5-5)^2}$
(Parenthesis) Simplify: $\displaystyle d = \sqrt{(5+2)^2+(5-5)^2}$
(Parenthesis) Add/Subtract: $\displaystyle d = \sqrt{(7)^2+(0)^2}$
[√Radical] Exponent: $\displaystyle d = \sqrt{(7)^2}$
[√Radical] Evaluate: $\displaystyle d = 7$

4 0

3 years ago

a company paid $48 for two cases of printer paper. each case contained 12 packages of paper. next month the company's office man

zmey [24]

Well, if two cases of 12 packages of printer paper cost $48, then 24 packages cost $48. This means that each package cost $0.5. Multiplying this by 180, we get a total of $90 for 180 packages of paper. A is the answer.

5 0

4 years ago

Ali runs 7 miles in 60 minutes. At the same rate, how many miles would he run in 24 minutes

VladimirAG [237]

Answer:

Ali would run 2.8 miles in 24 minutes.

7 0

4 years ago

Please help!!!!!!!!

Arisa [49]

It should be C., is that what the graph looks like?

6 0

4 years ago