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Alex777 [14]
3 years ago
14

Given: -3(2x + 7) = -29 – 4x; Prove: x = 4

Mathematics
1 answer:
sergey [27]3 years ago
8 0

Answer:

See steps below

Step-by-step explanation:

-3(2x+7)=-29-4x

Use the distributive property

-6x-21=-29-4x

Add 21 to each side

-6x=-8-4x

Add 4x to both sides

-2x=-8

Divide by -2

x=4

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Answer:

D = 45 and C = 26

Step-by-step explanation:

The bigger triangle has a 90 degree corner add that to 64 and you will get 164 (all of the triangles angles have to add to 180) from 180 subtract 164 and you get 26 which is C's answer

For D just divide 90 by 2 (90/2)=45

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3 years ago
The battery standby duration (in hours) of a new model of cell phone is known to be normally distributed. Ten pieces of such new
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want to find probability (P) x >= 13

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To convert that to percentage, multiply 100, to get 84.13%

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3 years ago
A boy purchased​ (bought) a​ party-length sandwich 51 in. long. He wants to cut it into three pieces so that the middle piece is
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Answer:

Step-by-step explanation:

we have a 51 in sandwich

let a piece be x

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What is the measure of angle DBC
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The angle measure of DBC is 45
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3 years ago
An item is regularly priced at $30. Frank bought it at a discount of 20% off the regular price. How much did Frank pay?
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Answer:

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Hope this helps!

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