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3 years ago

Complete the factorisation of this expression by finding the values of the capitalised pronumerals.

Mathematics

2 answers:

Orlov [11]3 years ago

5 0

Answer:

X=3

A=4

B=5

Step-by-step explanation:

12a+15b+9c=

3*4*a+3*5*b+3*3*c=

3(4a+5b+3c) then

X=3

A=4

B=5

ra1l [238]3 years ago

4 0

XA = 12
XB = 15
3X = 9
*
3X = 9
X = 9/3
X = 3
*
XA = 12
3A = 12
A = 12/3 = 4
*
XB = 15
3B = 15
B = 15/3 = 5

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Tickets to a concert went on sale at 10 a.m. by 12 p.m. 208 tickets have already been sold at this rate how many tickets will be

kotegsom [21]

Answer:

We conclude that 520 tickets will be sold in the first 5 hours of the tickets go on sale.

Hence, option A is true.

Step-by-step explanation:

Given that the tickets to a concert went on sale at 10 a.m. by 12 p.m.

10 a.m. by 12 p.m means the total number of hours = 2 hours

Given that the tickets sold in 2 hours = 208

Thus,

Unit rate = 208 tickets / 2 hours

= 104 tickets per hour

Therefore,

Tickets sold in the first 5 hours of the tickets go on sale:

104 × 5 = 520 tickets

Therefore, we conclude that 520 tickets will be sold in the first 5 hours of the tickets go on sale.

Hence, option A is true.

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3 years ago

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Greeley [361]

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4 years ago

You have 1 case of soap bars and there are 150 bars in a case. You use 300 bars of soap per day. How many cases do you need to o

diamong [38]

Answer:
14 cases

Explanation:
First, we will need to find the number of cases needed per day:
We know that one case includes 150 bars and that the daily consumption is 300 bars. To know the number of cases needed daily, we will use cross multiplication as follows:
1 case .............> 150 bars
?? cases .........> 300 bars
number of cases needed daily = $\frac{300*1}{150}$ 
number of cases needed daily = 2 cases

Then, we will get the number of cases needed weekly (7 days):
We know that 2 cases are needed daily. To know the number of cases needed weekly (7 days), we will simply use cross multiplication as follows:
1 day .............> 2 cases
7 days ...........> ?? cases
number of cases needed weekly = $\frac{7*2}{1}$ 
number of cases needed weekly = 14 cases

Hope this helps :)

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3 years ago

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Nataly [62]

Answer:

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Step-by-step explanation:

slope=2 as parallel lines have the same slope

y=2x+b , if x=2 then y=8 , so 2x2+b=8

so, b=4

Therefore the equation is y=2x+4

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3 years ago

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Fittoniya [83]

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