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sergiy2304 [10]
3 years ago
6

2(a + 3) = −4 i need help i don't understand

Mathematics
2 answers:
valina [46]3 years ago
4 0

Answer:

a = -5

Step-by-step explanation:

2(a + 3) = -4

2a + 6 = -4     Use the distributive property, distribute the 2 into (a + 3), meaning multiply the 2 by a and by 3.

2a = -10       Subtract 6 from both sides to isolate the a variable.

a = -5        Divide both sides by 2

kkurt [141]3 years ago
3 0

Answer: a = -5

Step-by-step explanation:

2(a+3)=-4

Distribute

2a+6=-4

subtract the six with the four and you get -10

-6-4=-10

now divide 2a with -10

you get a= -5

you can plug the answer in

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The ratio of the volume of two solids is 1331:729. What is the ratio of the surface area
katovenus [111]
Volume ratio = 1331/729 which is the cube of the linear scale factor.
To find the linear scale factor, let find the cubic root of the numerator & the denominator:

∛1331 = ∛11³  = 11

&  ∛729 = ∛9³  = 9

So the linear scale is 11/9 ==> then the ratio of their surface area will be:

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A triangle has two sides of length 9 and 14 what is the smallest possible whole number length for the third side
melisa1 [442]

Let the third side = x.

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3 years ago
Check the consistency of 2x-3y=7 and x-2y+1=0
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Answer:

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y = 9.

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3 0
3 years ago
I dont really know how to do soh cah toah. please help me find x.
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Now both triangles are 30^\circ-60^\circ-90^\circ, which means there's a convenient ratio between its sides. If the length of the shortest leg is \ell_1, then the length of the longer leg is \ell_2=\sqrt3\ell_1 and the hypotenuse has length \ell_3=\sqrt{{\ell_1}^2+{\ell_2}^2}=2\ell_1.

Since x is the shortest leg in the larger triangle, it follows that a+b=2x, so a+b=15=2x\implies x=\dfrac{15}2
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4 years ago
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