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Tanzania [10]
3 years ago
7

Need help please.I forgot this.

Mathematics
1 answer:
Sonbull [250]3 years ago
8 0
The associative property lets you move the parentheses.

6. (-20×50)×-29 = -1000×-29 = 29,000

7. (5×10)×18 = 50×18 = 900

8. 400 + (60 + 98) = 400 +158 = 558

9. 3×(20×5) = 3×100 = 300

10. (18 + 9) +91 = 27 +91 = 118
You might be interested in
How do you find the slope of the line with a pair of points?
soldi70 [24.7K]
Suppose you're given 2 points:  (a,b) and (c,d).  The SLOPE of the line segment connecting these 2 points is given by 
       d-b
m=--------
       c-a

Try this.  Find the slope of the line segment connecting (3,4) and (7,9).
6 0
3 years ago
PLZZZZ I need a quick answer
777dan777 [17]

Answer:

32 m

Step-by-step explanation:

Height of mast = 96tan30

Distance of second point = 96tan30 / tan60

Distance  = 32 m

4 0
3 years ago
Your friend tossed a fair coin when you weren’t around. She has a habit of messing with you every once in a while, and so there
zaharov [31]

Answer:

Step-by-step explanation:

Given that your friend tossed a fair coin when you weren’t around.

Let A be the event that she said the outcome is head

B1 = Event she lied and B2 = Event she did not lie

P(B1) = \frac{1}{3}    \\ P(B2) \frac{2}{3}

P(AB1) = \frac{1}{2} *\frac{1}{3} =\frac{1}{6}

P(AB2) = \frac{2}{3} \frac{1}{2} =\frac{2}{6}

Required probability = P(B1/A)=\frac{P(B1A)}{P(B1A)+P(B2A)} \\=\frac{\frac{1}{6} }{\frac{1}{6}+\frac{2}{6}} \\=\frac{1}{3}

3 0
3 years ago
GUYS HELP ME PLS. Tina is standing at the bottom of a hill. Matt is standing on the hill so that when Tina's line of sight is
Pie

Answer:

71°

Step-by-step explanation:

The angle of elevation of the hill can be obtiaed using trigonometry :

Given

the opposite length = 14.5 feets

Adjacent = 5 feets

The angle of elevation vabnbe obtained using :

Tan θ = opposite / Adjacent

Where θ = angle of elevation

Tan θ = 14.5 / 5

Tan θ = 2.9

θ = tan^-1(2.9)

θ = 70.97 = 71°

3 0
3 years ago
(-2) • (-4.5) <br> answer
sashaice [31]

Answer:

9

plz mark brainliest

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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