3 years ago

3 x 104 + 2.5 x 105 = A. 0.5 x 105 B. 2.8 x 105 c. 3.25 x 10$ D. 5.5 x 10

Mathematics

1 answer:

s2008m [1.1K]3 years ago

8 0

Well I’m getting 574.5 for the first one and not getting the same for any of them.

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Your family goes to a southern style restaurant for dinner. There are 6 people in your family. Some order the chicken dinner for

Len [333]

Ok. You can use equations to find out what number of each meal was eaten.

x*14+y*17=99

If you solve for x and y (I used guess and check- there's only a few possible combinations) and got one chicken dinner and five steak dinners.

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3 years ago

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BRAINLIEST FOR WHOEVER SOVLES FIRST AND GIVES A GOOD REASON.

natulia [17]

X=60
That’s the answer

What I did to get it
(3x-60)=120
+60. +60
3x =180
————. = 60
3

X=60

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3 years ago

X + 3/ 5 = 2<br> -5<br> -3<br> 7<br> 13

ahrayia [7]

X 3/5 =2x+15=2x=15-2x=13

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3 years ago

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love history [14]

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3 0

3 years ago

Find a vector 3 units long in the opposite direction from v = 〈3, 1,-4).

lutik1710 [3]

Unit vector along the direction v = <3,1,-4> is :

$\hat{v} = \dfrac{3i + j -4k}{\sqrt{3^2 + 1^2 + 4^2}}\\\\\hat{v} = \dfrac{3i + j -4k}{5.1}$

So, unit vector opposing the $\hat{v}$ is :

$\hat{v'} = -\hat{v}\\\\\hat{v'} = -( \dfrac{3i + j -4k}{5.1})\\\\\hat{v'} = \dfrac{-3i - j +4k}{5.1}$

so, vector of magnitude 3 units in opposite direction from v is :

$\vec{V} = 3\hat{v'}\\\\\vec{V} = \dfrac{3}{5.1}( -3i -j+4k)$

Hence, this is the required solution.

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3 years ago