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3 years ago

13

Someone help, I can't figure this out lol

1 answer:

AveGali [126]3 years ago

8 0

Answer: (13) 128 (14) 3 (15) 38 (16) 21

Step-by-step explanation:

13) (x+3)+49=180

14) 66+8x=90

15) (x+3)+49=90

16) 3x+117=180

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Which of the following is the inverse of y=12^x

Elenna [48]

$y=12^x\ \ \ |log_{12}\\\\\log_{12}y=\log_{12}12^x\\\\\log_{12}y=x\log_{12}12\\\\x=\log_{12}y$

$y=12^x\to y^{-1}=\log_{12}x;\ x\in\mathbb{R^+}\to\ y^{-1}=\dfrac{\log x}{\log12};\ x\in\mathbb{R^+}\to y^{-1}=\dfrac{\ln x}{\ln 12}$

$Used:\\\\\log_aa=1\\\\\log_ab^n=n\log_ab\\\\\log_ab=\dfrac{\log_cb}{\log_ca}$

3 0

3 years ago

Read 2 more answers

The Gordon family plans to buy a TV. One TV has a purchase price of $330 and an estimated yearly operating cost of $14. The othe

garri49 [273]

Answer:

Step-by-step explanation:

They should purchase the $369 one with the $9 plan.

330 + (14x8) =442

369+ (9x8) = 441

Hope this helps!

6 0

3 years ago

Read 2 more answers

I’m putting the right answer which is “6” but the computer keeps telling me I’m wrong, I don’t understand, what else is there to

iragen [17]

You may have have forgotten to find the measure of A. Which would by using your 6 that you got would be 19.

16X-6=90

96=16X

X=6

8X6-29

48-29

19

3 0

3 years ago

given total 72 stitches and 1 stitch takes 1/4 inch, so total yarn used : 18 inch 36 inch = 3 feet = 1 yard divide by 2 18 inch

dezoksy [38]

I hope this helps you

if 1 stitch 1/4 inch

72 stitches ? inches

?=72.1/4

?=18 inches

8 0

4 years ago

Plssss help quick i need it for sum important

Vanyuwa [196]

(a) The product of $(2x-4)\ and\ (3x^2-x+4)$ is calculated to be $=6x^3-14x^2+12x-16$

(b)The product of $(2x-4) \ and\ (3x^2-x+4)\$ is not equal to the product of $(4x-2)\ and\ (3x^2-x+4)$

<u>Step-by-step explanation:</u>

<u>(a)</u>

$(2x-4)(3x^2-x+4)\\\\=(2x.3x^2)+(2x.-x)+(2x.4)+(-4.3x^2)+(-4.-x)+(-4.4)\\\\=6x^3-2x^2+8x-12x^2+4x-16\\\\=6x^3-14x^2+12x-16$

b)

$(4x-2)(3x^2-x+4)\\\\=(4x.3x^2)+(4x.-x)+(4x.4)+(-2.3x^2)+(-2.-x)+(-2.4)\\\\=12x^3-4x^2+16x-6x^2+2x-8\\\\=12x^3-10x^2+18x-8$

The product of $(2x-4) \ and\ (3x^2-x+4)\$ is not equal to the product of $(4x-2)\ and\ (3x^2-x+4)$

7 0

3 years ago