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4 years ago

Evaluate (5x)² if x=3 (5x)² =

Mathematics

1 answer:

Rus_ich [418]4 years ago

4 0

Answer:

225

Step-by-step explanation:

(5x)^2, then plug in X which is 3->(5x3)^2, then do 5 times 3 in the parentheses->(15)^2, then do 15 squared or 15 times 15-> 225

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Ann is baking cookies. she bakes three dozen oatmeal raisin cookies, two dozen sugar cookies, and four dozen chocolate chip cook

jeyben [28]

Ann is keeping:
1 dozen oatmeal raisin
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4 years ago

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Nswer two questions about Systems A AA and B BB: System A AA start text, end text System B BB { − 3 x + 12 y = 15 7 x − 10 y = −

rjkz [21]

Answer:

(Choice C) C Replace one equation with a multiple of itself

Step-by-step explanation:

Since system A has the equations

-3x + 12y = 15 and 7x - 10y = -2 and,

system B has the equations

-x + 4y = 5 and 7x - 10 y = -2.

To get system B from system A, we notice that equation -x + 4y = 5 is a multiple of -3x + 12y = 15 ⇒ 3(-x + 4y = 5) = (-3x + 12y = 15).

So, (-x + 4y = 5) = (1/3) × (-3x + 12y = 15)

So, we replace the first equation in system B by 1/3 the first equation in system A to obtain the first equation in system B.

So, choice C is the answer.

We replace one equation with a multiple of itself.

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3 years ago

I am at the Kruger National Park in Skukuza with the latitude and longitude coordinates (-24.98,31.58). My friends are exploring

dsp73

Given Kruger National Park in Skukuza coordinate : (-24.98,31.58).

Nelson Mandela Musuem in Mpumalanga coordinate : (-29.82,31.58).

We need to find exactly in between given coordinates.

We know, mid - point formula :

$\mathrm{Midpoint\:of\:}\left(x_1,\:y_1\right),\:\left(x_2,\:y_2\right):\quad \left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right).$

$\left(x_1,\:y_1\right)=\left(-24.98,\:31.58\right),\:\left(x_2,\:y_2\right)=\left(-29.82,\:31.58\right)$

$=\left(\frac{-29.82-24.98}{2},\:\frac{31.58+31.58}{2}\right)$ .

$=\left(-27.4,\:31.58\right)$ .

Therefore, will be meeting at (-27.4, 31.58).

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4 years ago

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melomori [17]

Answer: C

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4 years ago

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OverLord2011 [107]

Answer: is it c?

Step-by-step explanation:

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3 years ago

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