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Alex787 [66]
3 years ago
12

Simplify variable expressions involving like terms and the distributive property

Mathematics
1 answer:
Mandarinka [93]3 years ago
6 0

Answer:

gracias por los puntos xd

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Evaluate and simplify the expression<br> when a = 4 and b = -1.<br> 5 - 2(a + 3b)/2
gayaneshka [121]

Answer:

4

Step-by-step explanation:

hope it helps ;)

4 0
2 years ago
I need help on this math problem.
OLEGan [10]

B: (0, a)

C should have the same y value as B

D: (a,0)

C should have the same x value as D


So point C is (a,a)

Since point A is on the origin, its point is (0,0)


You use the slope formula and plug in point A and C:

m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

m=\frac{a-0}{a-0}

m=\frac{a}{a}

m = 1


So the value that belongs in the green box is 1


6 0
3 years ago
Kristin is 20 miles behind a truck that is driving 50 miles per hour. How long will it take her to catch up to the truck? How fa
creativ13 [48]
<span>t = 20/(r-50)</span>t=20/r-50 hours

8 0
3 years ago
During the grand opening of the T-Shirt Shack at the Madera County Emu Farm, four of the emus broke through the fence and attack
Irina-Kira [14]

Given :

p = 0.68

margin of error, E = 0.1

99% confident interval

alpha, α = 1 - 0.99

             = 0.01

$\frac{\alpha }{2}=\frac{0.01}{2} = 0.005$

∴ $z_{\alpha/2}=z_{0.005}=2.5758$ (z-critical value)

Sample size = $z_{\alpha/2} \times \frac{p(1-p)}{E^2}$

                    $=(2.5758)^2 \times 0.68 \times \frac{(1-0.68)}{0.1^2}$

                    $= 6.63475 \times 0.68 \times \frac{0.32}{0.01}$

                   = 144.37

                  = 145 (rounded off)

Therefore, there are 145 businesses does she need to sample to meet this criteria.

6 0
3 years ago
What is the answer for number 10?
barxatty [35]
Answer is a to the question
4 0
2 years ago
Read 2 more answers
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