4 years ago

If the shape of a plane figure looks exactly the same when it is rotated, it has _________________________.

1 answer:

3 0

Hey, I am guessing A! "Guessing". I m pretty sure it's a but not 100 confident. it's like 99.999999% a lol. u should confirm with someone else too

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Uhh help lol<br> 5.3x + y = 28.5 <br> 4.2x + 3.1y = 27.2<br> find x and y

navik [9.2K]

Answer:

x = 5, y = 2

Step-by-step explanation:

First, isolate y in the top equation.

$y = -5.3x+28.5$

Next, substitute y in the bottom equation.

$4.2x + 3.1(-5.3x + 28.5) = 27.2$

$5.3x + y = 28.5$

Simplify.

$4.2x + -16.43x + 88.35 = 27.2$

Combine like terms.

$-12.23x + 88.35 = 27.2$

Isolate x on one side.

$-12.23x = -61.15$

Isolate x.

$x = 5$

Substitute x into $5.3x + y = 28.5$

$5.3(5) + y = 28.5$

Simplify.

$26.5 + y = 28.5$

Isolate y.

$y = 2$

$x = 5 \\y = 2$

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3 years ago

7=8 + r/15 <br> Simplify, with steps pleaseee

Crazy boy [7]

Answer:

$7 = 8 + \frac{r}{15} \\ 7 - 8 = \frac{r}{15} \\ - 1 = \frac{r}{15} \\ \therefore \: r = - 15$

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3 years ago

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Write twenty eight and sixty five thousandths as a decimal!

tangare [24]

Answer:answer is 28.00065 hope this helps

Step-by-step explanation:

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3 years ago

What is the branch of mathematics developed by isaac newton called today?.

joja [24]

Answer: Calculus.

Step-by-step explanation: He created calculus.

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2 years ago

<img src="https://tex.z-dn.net/?f=2%20-%206%20%5Cdiv%206" id="TexFormula1" title="2 - 6 \div 6" alt="2 - 6 \div 6" align="absmid

Karolina [17]

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= 2 - 1

= 1

Answer is 1

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3 years ago