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Andrews [41]
3 years ago
5

What is the answer to this −8(9r−1)−9(−8r+2)

Mathematics
2 answers:
Nitella [24]3 years ago
7 0

Answer:

-10

Step-by-step explanation:

-72r+8+72r-18

-10

Artist 52 [7]3 years ago
7 0
-10 is the answer I simplified it
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You have to complete at least 10 physics problems and math problems within 2 hours before you playing video games. It will take
Ghella [55]

Answer:2

Step-by-step explanation:

Given

Physics problem requires 20 min

Math problem require 10 min

suppose x question of Physics and y questions of Math are done

so according to the question

x+y\geq 10\ldots 1

Time require for x Physics problem =20 x

Time require for y Math problem =10 y

so,

20 x+10 y\leq 120\ldots 2

On solving (1) and (2)

we get x=2 and y=8

Maximum no of Physics question which can be solved is 2

5 0
3 years ago
Find the periodic withdrawals PMT for the annuity given. HINT [See Example 4.] (Assume end-of-period withdrawals and compounding
Anettt [7]
It depends on if the interest rate of 6% is nominal or not.  The question doesn't specify.  Let's assume that is is a nominal rate, compounded monthly.
Start with 100000 = x * a angle 132 at .5% per month
This becomes 100000 = x * (1-1.005^-132)/.005
Which becomes (100000(.005))/(1 - 1.005^-132) = x
So x is the PMT, which is 1036.70.
8 0
3 years ago
F as a function of x is equal to the square root of quantity 6 x plus 9 , f as a function of x is equal to the square root of qu
Elis [28]

Answer:

A. \sqrt{6x+9} +\sqrt{6x-9}

Step-by-step explanation:

We are given the functions f(x) and g(x) as,

f(x)=\sqrt{6x+9}

g(x)=\sqrt{6x-9}

It is required to find the function ( f+g ) i.e. ( f+g ) (x)

So, (f+g)(x)=f(x)+g(x)

i.e. (f+g)(x)=\sqrt{6x+9}+\sqrt{6x-9}

Hence, we get that (f+g)(x)=\sqrt{6x+9}+\sqrt{6x-9}.

So, the first option is correct.

4 0
3 years ago
3 numbers are in arithmetic progression their sum is15 and their product is 80 determine the 3 numbers
Mashcka [7]

Answer:

2, 5, 8

Step-by-step explanation:

For starters, let us assume that the numbers are x-d, x, and x+d.

Where d is the common difference between terms.

This mean that we can say, from the question

x-d + x + x+d = 15

3x = 15,

x = 5,

This means that the terms are 5, 5-d and 5+d.

On the other hand,

(5-d) * 5 * (5+d) = 80

(5-d) * (5+d) = 80/5

(5-d) * (5+d) = 16

25 - d² = 16

d² = 9

d = + or - 3.

Finally, the three numbers will be 2, 5, and 8. On the flipside, their sum and product are 15 and 80.

6 0
2 years ago
IMPORTANT NEED RIGHT NOW!! PLEASE HELP!!! WILL VOTE BRAINLIEST!!!
irina1246 [14]
Week 1: 50
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3 years ago
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