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3 years ago

Which phrase should be inserted on the line to make a true statement? Use the models to help.

Mathematics

2 answers:

Paladinen [302]3 years ago

4 0

Answer:

is equal to or awnser D

Step-by-step explanation:If you divide the you get the same awnser

nlexa [21]3 years ago

3 0

Answer:

2/3 = 8/12

Step-by-step explanation:

2/3 vs 8/12

Multiply the left by 4/4 to get common denominators

2/3 *4/4 = 8/12

They are equal

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How solve this x+y=5 X-y=7

Misha Larkins [42]

$elimination\ methode\\\\\underline{+\left\{\begin{array}{ccc}x+y=5\\x-y=7\end{array}\right}\ \ \ \ |add\ both\ sides\ of\ the\ equations\\.\ \ \ \ \ \ 2x=12\ \ \ \ \ |divide\ both\ sides\ by\ 2\\.\ \ \ \ \ \ \ \boxed{x=6}\\\\subtitute\ the\ value\ of\ x\ to\ the\ first\ equation:\\\\6+y=5\ \ \ \ |subtract\ 6\ from\ both\ sides\\\boxed{y=-1}\\\\Answer:\boxed{\left\{\begin{array}{ccc}x=6\\y=-1\end{array}\right}$

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3 years ago

Write an equation that is non-proportional.

elena-s [515]

Answer:

y = mx + b. When b ≠ 0, the relationship between x and y is nonproportional.

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2 years ago

Calculate the average between 200 and 4100

yKpoI14uk [10]

4300 / 2 = 2150

Just simply divide

8 0

3 years ago

Read 2 more answers

What is the missing step in this proof?

garri49 [273]

I'm not really sure what I'm looking at... is it possible for you to take a better picture so I can look at the diagram if there is one + the rest of the steps?

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3 years ago

5x + 4y = 11 2x + 6y = -7

olga55 [171]

$\left\{\begin{array}{ccc}5x+4y=11&|\cdot2\\2x+6y=-7&|\cdot(-5)\end{array}\right\\\underline{+\left\{\begin{array}{ccc}10x+8y=22\\-10x-30y=35\end{array}\right}\ \ \ \ |add\ both\ sides\ of\ the\ equations\\.\ \ \ \ \ \ \ \ \ \ \ -22y=57\ \ \ \ |:(-22)\\.\ \ \ \ \ \ \ \ \ \ \ y=-\dfrac{57}{22}\\\\substitute\ the\ value\ of\ y\ to\ the\ first\ equation\\\\5x+4\left(-\dfrac{57}{22}\right)=11\\\\5x-2\cdot\dfrac{57}{11}=11\ \ \ \ |\cdot11\\\\55x-114=121\ \ \ \ |+114\\\\55x=135\ \ \ \ |:55$

$x=\dfrac{135}{55}\\\\x=\dfrac{27}{11}\\\\Answer:\ x=\dfrac{27}{11}\ and\ y=-\dfrac{57}{22}\to\left(\dfrac{27}{11},\ -\dfrac{57}{22}\right)$

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3 years ago