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vovangra [49]
2 years ago
8

10x – 5y + 2x – Зу Simplify this expression

Mathematics
2 answers:
iVinArrow [24]2 years ago
7 0
12x - 8y or 4(3x-2y)

Add 10x and 2x and -5y and -3y
12345 [234]2 years ago
4 0

Answer:

12x-8y

Step-by-step explanation:

add 10x and 2x, this gets 12x, and add -5y with -3y, which gives you -8y. Add both of these values together and you get 12x-8y

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What is the future value of $11,600 invested for 17 years at 7.25 percent compounded annually? $32,483.60 $27,890.87 $38,991.07
Black_prince [1.1K]
The main formula is A=P(1+r/n)^nt, where A=amount of $ in the account at the specified time, P=principal (amount originally invested), r=interest rate, expressed as a decimal number, t=time, in years, of the investment, and n=number of times the account is compounded annually. 
In our equation:
P=$11,600
r=7.25%=.0725
t=17 years
n=1 (compounded annually)
A= 11600(1+.[0725/1])^(1*17)
=11600(1+.0725)^17
=11600(1.0725)^17
=11600(3.286654969)
A=$38125.20

7 0
3 years ago
Read 2 more answers
Based on information from Consumer Reports, a random sample of 35 thirty-gram cookies had a sample mean of 146 calories. The sta
Nonamiya [84]

Using the z-distribution, it is found that the 90% confidence interval for mean calories in a 30-gram serving of all chocolate chip cookies is (143, 149).

We are given the <em>standard deviation</em> for the population, which is why the <em>z-distribution </em>is used to solve this question.

The information given is:

  • Sample mean of \overline{x} = 146.
  • Population standard deviation of \sigma = 12.
  • Sample size of n = 65.

The confidence interval is:

\overline{x} \pm z\frac{\sigma}{\sqrt{n}}

The critical value, using a z-distribution calculator, for a <u>95% confidence interval</u> is z = 1.645, hence:

\overline{x} - z\frac{\sigma}{\sqrt{n}} = 146 - 1.645\frac{12}{\sqrt{35}} = 143

\overline{x} + z\frac{\sigma}{\sqrt{n}} = 146 + 1.645\frac{12}{\sqrt{35}} = 149

The 90% confidence interval for mean calories in a 30-gram serving of all chocolate chip cookies is (143, 149).

A similar problem is given at brainly.com/question/16807970

8 0
2 years ago
Bamboo plants grow rapidly. A bamboo plant is 130 inches tall. Tomorrow it will be 143 inches tall, the next day it will be 156
jasenka [17]

Your choice of answer D is correct.

_____

When the number of days is zero, the height is 130 inches. This eliminates choices B and C. Evaluating the expression for n=13 gives

... 130 + 13×13 = 130 + 169 = 299 . . . . . corresponding to answer D.

3 0
2 years ago
How many cups is 4-6 quarts
Irina-Kira [14]

if 4 to 6 then 16 to 24, but if its 4 minus 6, its -8 cups


3 0
3 years ago
Last year sandro bought a book for $13.89. this year the same book cost $15.79. what is the percent of change
SashulF [63]
15.79-13.89=1.9

1.9/13.89=0.14

14% change
4 0
3 years ago
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