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fomenos
3 years ago
7

what is the cost of 8 books at $4 each? what is the cost of x books at $4 each? what is the cost of 5 books at $x each ?​

Mathematics
1 answer:
tatiyna3 years ago
6 0

Step-by-step explanation:

the cost of 8 books at $4 each

=》8 × 4 = $ 32

the cost of x books at $4 each

=》x × 4 = $ 4x

the cost of 5 books at $x each

=》5 × x = $ 5x

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The cost of 5 story books is Rs 800. How many books can be bought for Rs 1,440?​
djyliett [7]

Answer:

cost of 5 story book=800

cost of 1 story book=800/5

=160

how many. book can be bought on rs.1400

=1400/160

=8.75

Step-by-step explanation:

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4 0
2 years ago
if you are told only that you scored 80th percentile do you know from the description exactly how it wad calculated? Explain
Dmitriy789 [7]

<span>We know that there is no universal acceptance meaning of a percentile. When someone told you that you are in the 80th percentile, the meaning of that is you have achieved the lowest score that is greater than 80 percent of the score. It is calculated by using the formula     <span>R = P/100 x (N + 1)</span></span>

3 0
3 years ago
What is the slope of the line given by the equation y = 6x​
Alenkinab [10]

Answer: Slope:  

6

y-intercept:  

0

Step-by-step explanation:

Hope this helps!

I am joyous to assist anytime.

~Jarvis

8 0
2 years ago
out of a group of zebras 6/5 times the square root of the number of zebras are playing on the shore of the tank remaining six ar
MatroZZZ [7]

Answer:

Step-by-step explanation:

(6/5)√x = x - 6

(36/25)x = x² - 12x + 36

0 = x² - 13.44x + 36

x = (13.44 ± √(13.44² - 4(1)(36))) / (2(1))

x = (13.44 ± 6.052569702...) / 2

x = 3.69371... zebras

or

x = 9.74628... zebras

In either case we have some odd fractions of zebras hanging around. This makes me highly suspect that the question is misreported

3 0
2 years ago
How many pounds of each kind of candy (hard at $2 per pound, and soft at $4 per pound) must be mixed to
Reil [10]

Answer:

30 pounds of hard candy and 30 pouonds of soft candy

Step-by-step explanation:

$2 per pound added with $4 per pound would become $3 per pound

x pounds plus 60 - x pounds will add up to 60 pounds

(multiply the top with the bottom)

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6x = 180

x = 30

60 - 30 = 30

6 0
3 years ago
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