3 years ago

Are the two expressions equivalent when x = 20? 8(12x + 4) 96x + 32

Mathematics

1 answer:

Iteru [2.4K]3 years ago

7 0

Yes
<span>8(12x + 4) = 8[12(20) + 4 ] = 1952

</span>96x + 32 = 96 (20) + 32 = 1952

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Colin invests £1500 into a savings account. The bank gives 4% compound interest for the first 3 years and 5% thereafter. How muc

fomenos

1500(1+0.04)^3 = 1687.30

1687.30(1+0.05) = 1771.67 to the nearest pound: 1772

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2 years ago

A bag contains 10 red marbles, 15 yellow marbles and 5 green marbles. What is the probability of drawing a red or green marble f

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Probability =

(number of ways it can come out the way you want)
divided by
(total number of ways it can come out).

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2 years ago

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I dont know what your asking, for the other angle? Ig so. Answer: THE OTHER ANGLE IS 26. :)

Step-by-step explanation:

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180-154 = 26.

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3 years ago

Solve equation 3x+3y+6z-15w=9

Allushta [10]

Answer:

The equation is already solved.

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2 years ago

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Standard deviation of 300, 785, 670, 187, 760, 724

White raven [17]

STEP 1

Mean = $\frac{300+785+670+187+760+724}{6} = \frac{3426}{6}=571$

STEP 2

Subtract the mean from each data value then square the answer
$300-571=-271$ ⇒ $(-271)^{2} =73441$
$785-571=214$ ⇒ $(214)^{2}=45796$
$670-571=99$ ⇒ $(99)^{2}=9801$
$187-571=-384$ ⇒ $(-384)^{2} =147456$
$760-571=189$ ⇒ $189^{2}=35721$
$724-571=153$ ⇒ $153^{2} =23409$

STEP 3

Add the squared answers in STEP 2 then find the mean

$\frac{73441+45796+9801+147456+35721+23409}{6}= \frac{335624}{6}=55937.3$

STEP 4

Square root the answer in STEP 3
$\sqrt{55937.3} =236.5$

Standard deviation is 236.5

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3 years ago