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4 years ago

Can someone please Solve 20-2x(4+2)

Mathematics

2 answers:

kotegsom [21]4 years ago

7 0

Answer:

20−12x

Step-by-step explanation:

Serggg [28]4 years ago

5 0

Answer:

20-12x

Step-by-step explanation:

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Emily uses 2/3 cup of milk to make one batch of muffins. How many cups of will Emily use if she makes 3 batches of muffins

Degger [83]

Answer:

$2\ cups\ of\ milk$

Step-by-step explanation:

we know that

Using proportion

$\frac{(2/3)}{1}\frac{cups\ of\ milk}{batch\ of\ muffins}=\frac{x}{3}\frac{cups\ of\ milk}{batches\ of\ muffins}\\ \\x=3*(2/3)\\ \\x=2\ cups\ of\ milk$

3 0

4 years ago

IF U HELP ME I WILL GIVE U A COOKIE AND BRAINLIEST

Andrej [43]

Step-by-step explanation:

Hope it helps you in your learning process.

3 0

4 years ago

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What are the orders of 3,7,9,11,13,17 and 19(mod20)?does 20 have primitive roots?

bezimeni [28]

$3\equiv3\mod{20}$
$3^2\equiv9\mod{20}$
$3^3\equiv27\equiv7\mod{20}$
$3^4\equiv3\cdot3^3\equiv3\cdot7\equiv21\equiv1\mod{20}$

$7\equiv7\mod{20}$
$7^2\equiv49\equiv9\mod{20}$
$7^3\equiv7\cdot7^2\equiv63\equiv3\mod{20}$
$7^4\equiv7\cdot7^3\equiv21\equiv1\mod{20}$

$9\equiv9\mod{20}$
$9^2\equiv3^4\equiv1\mod{20}$

$11\equiv11\mod{20}$
$11^2\equiv121\equiv1\mod{20}$

$13\equiv-7\equiv13\mod{20}$
$13^2\equiv169\equiv9\mod{20}$
$13^3\equiv13\cdot13^2\equiv(-7)9\equiv-63\equiv-3\mod{20}$
$13^4\equiv13\cdot13^3\equiv(-7)(-3)\equiv21\equiv1\mod{20}$

$17\equiv-3\equiv17\mod{20}$
$17^2\equiv(-3)^2\equiv9\mod{20}$
$17^3\equiv(-3)^3\equiv-27\equiv3\mod{20}$
$17^4\equiv(-3)^4\equiv81\equiv1\mod{20}$

$19\equiv-1\equiv19\mod{20}$
$19^2\equiv19(-1)\equiv-19\equiv1\mod{20}$

Generally speaking, a number $x$ coprime to $n$ will be a primitive root of $n$ if we have $x^n\equiv x\mod{n}$ , or $x^{n-1}\equiv1\mod{n}$ . In other words, if $x$ is of order $n-1$ modulo $n$ , then $x$ is a primitive root of $n$ .

Since none of these numbers has order 19, it follows that 20 does not have any primitive roots.

6 0

4 years ago

Which of the following is the height of the special trapezoid if WX = 18 , YZ = 18 & The Area Is 144^2

Ierofanga [76]

Area of a trapezoid formula:

A = 1/2(Base1 + Base2)*height

I will assume that WX and YZ are the two bases, since that's the only thing that logically makes sense to answer the question.

Plug in what we know
I believe the Area is meant to be 144 unit^2, as no area is ever given as 144^2

144 = 1/2(18 + 18) * h

solve for h

144 = 18 * h

h = 144/18

h = 8

The height is 8.

8 0

3 years ago

The equation y - 2 = 3(x + 1) is in point-slope

7nadin3 [17]

Answer:

y=3x+5

Step-by-step explanation:

See attached image

6 0

2 years ago

Read 2 more answers