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Vsevolod [243]
3 years ago
6

What is the product of (2x2 + 4x-2) and 3x+6)?​

Mathematics
1 answer:
Setler79 [48]3 years ago
8 0

Answer:

{24x}^{2} + 42x - 12

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Your uncle gave you a stock certificate worth $4 that he said would triple in value each year. How much would your certificate b
Zigmanuir [339]

Why hello there

Your question: Your uncle gave you a stock certificate worth $4 that he said would triple in value each year. How much would your certificate be worth in 10 years?

My answer: So lets do this step by step

  • First so in the first year u get $4
  • In the secon year u get $12
  • In the third year you get $36
  • In the fourth year you get $108
  • In the fifth year you get $324
  • 6th year $972
  • 7th year $2916
  • 8th year $8748
  • 9th year $26244
  • 10th year $78732

So in 10 years you get $78,732

If my answer helped please mark me as brainliest thank you and have the best day ever!

5 0
3 years ago
A screening test for a newly discovered disease is being evaluated for its performance as a screening test. In order to determin
Elena-2011 [213]

Answer:

- Sensitivity = 62.7 %

- specificity = 74.9 %

- positive predictive value = 45.2 %

- negative predictive value = 85.9 %

- Accuracy of the test = 71.9 %

Step-by-step explanation:

Given the data in th question;

                                 CONDITION POSITIVE    CONDITION NEGATIVE   TOTAL

TEST POSITIVE                   42                                       51                            93

TEST NEGATIVE                 25                                      152                          177

TOTAL                                  67                                     203                         270

so; A=42, B=51, C=25 and D=152

Sensitivity = [A / ( A + C) ]×100= [42 /( 42 + 25)]×100 = [42 / 67] 100=

Sensitivity = 62.7 %

specificity = [D / ( D + B) ]×100= [152 /( 152 + 51)]×100 = [152 / 203] 100=

specificity = 74.9 %

positive predictive value = [A / ( A + B) ]×100 = [42 /( 42 + 51)]×100 =[42/93] 100

positive predictive value = 45.2 %

negative predictive value =  [D / ( D + C) ]×100 = [152 /( 152 + 25)]×100 =[152/177] 100

negative predictive value = 85.9 %

Accuracy of the test = [A + D / ( A+B+C+D)] =  [42 + 152 / ( 42+51+25+152)]

= [ 194 / 270 ]

Accuracy of the test = 71.9 %

3 0
2 years ago
Distribute and simplify the following:<br><br>3 ( x + 4) + 2 ( 5 - x)​
lesya [120]

Step-by-step explanation:

Given

3 ( x + 4) + 2 ( 5 - x)

= 3x + 12 + 10 - 2x

= x + 22

Hope it will help :)❤

4 0
2 years ago
Find the value of x and please show how
Rzqust [24]

Answer:

?=91 degrees.

Step-by-step explanation:

There is no x- I'll find ? though.

So, angles in a triangle must equal 180.

180-29-62=89. The last angle in the triangle is 89 degrees.

A straight angle is equal to 180 degrees. ? + 89=180.

180-89=91.

?=91 degrees.

Hope this helped!

5 0
2 years ago
Laura is paying 1.07x including tax for a sweater that costs x before tax. Write this expression in another way to show the amou
ludmilkaskok [199]
Laura is paying 7% as tax.

1.07 is equal to 107%. To get the total price of something with tax you multiply it by 100% plus the tax. Simplify the percent to 1.07,

1.07x = x + 0.07x
8 0
3 years ago
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