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Svetach [21]
3 years ago
7

Explain how you could mentally find 8x45 by using Distrubitive property

Mathematics
2 answers:
ICE Princess25 [194]3 years ago
4 0
You could do 8x40=320 and then do 8x5=40 and lastly do 320+40=360
I hope that this helps you!!!
saul85 [17]3 years ago
3 0
 The distributive property
multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products 

8x45= 360
8x40=320
8x5=40
8x40 + 8x5 = 360


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Ann [662]

Answer:

X+296=285

X=-11

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6 0
2 years ago
Which term is used to describe the opposite of a statement?
Kazeer [188]
“ negation “ would be used
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3 years ago
The function C(x)=−15x+2304 represents the cost to produce x items. What is the least number of items that can be produced so th
Alexus [3.1K]

Answer:

152

Step-by-step explanation:

Given the function :

C(x)=−15x+2304

The least Number of items, x that can be produced so that average cost does not exceed $33

C(x) = less than or equal to 33

33 = - 15x + 2304

33 - 2304 = - 15x

-2271 = - 15x

x = 2271 / 15

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3 0
2 years ago
The following histogram shows the relative frequencies of the heights, recorded to the nearest inch, of a population of women. T
Airida [17]

Answer:

The following histogram shows the relative frequencies of the height recorded to the nearest inch of population of women the mean of the population is 64.97 inches and the standard deviation is 2.66 inches

(a) Based on the histogram, what is the probability that the selected woman will have a height of at least 67 inches? Show your work

Answer:

0.22268

Step-by-step explanation:

z-score is z = (x-μ)/σ,

where x is the raw score

μ is the population mean

σ is the population standard deviation.

(a) Based on the histogram, what is the probability that the selected woman will have a height of at least 67 inches? Show your work

At least means equal to or greater than 67 inches

z = 67 - 64.97/2.66

z = 0.76316

P-value from Z-Table:

P(x<67) = 0.77732

P(x>67) = 1 - P(x<67) = 0.22268

The probability that the selected woman will have a height of at least 67 inches is 0.22268

Step-by-step explanation:

6 0
3 years ago
The sum of the areas of two circles is 8pie square meters. Find the length of a radius of each circle ifone of them is twice as
NeX [460]
Nice

area=pir^2
the areas are
pir^2+pi(2r)^2
they add to 8pi

8pi=pir^2+pi(2r)^2
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8pi=pi(r^2+(2r)^2)
divide both sides by pi
8=r^2+(2r)^2
expand
8=r^2+4r^2
add
8=5r^2
divide by 5
8/5=r^2
sqrt both sides
√(8/5)=r
double since it is double
2√(8/5) is radius of bigger aka (4√10)/5

radius=(4√10)/5
5 0
3 years ago
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