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ryzh [129]
3 years ago
15

For each value of u , determine whether it is a solution to 23=4u-1 .

Mathematics
1 answer:
aniked [119]3 years ago
7 0

Answer:

6

Step-by-step explanation:

Transposition

23+1=4u

24=4u

Divide both side by 4

u=6

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If the sales tax in your city is 11.4%, and an item costs $160 before tax, how much tax would you pay on that item? Round to the
Oksana_A [137]
First we calculate the tax on the item:
11.4%($160) = 11.4(160)/100 = 18.24
hence the tax for the item is $18.24
The total price for the item would be:
160 + 18.24 = 178.24
hence the total price for the item including tax is:
$<span>178.24</span>

7 0
3 years ago
If xy + 12 = 6x + 7, find y if x =5.
Igoryamba

Answer: look at the picture

Step-by-step explanation: Hope this help :D

4 0
2 years ago
Read 2 more answers
2x + y = 3<br> x = 2y - 1
Ad libitum [116K]
<span>2x+ y = 3
x = 2y - 1 
Make sure there are NO SPACES in your answer. Include a comma in your answer.
It looks like I could substitute the x=2y-1. Into 2x+y=3
2(2y-1)+y=3
4y-2+y=3
5y=5
y=1
x=2(1)-1
x=1

(1,1)
CHECK
2x+y=3
2(1)+(1)=3
2+1=3
3=3
Left hand side=Right hand side 
Check other equation 
x=2y-1
1=2(1)-1
1=1
Therefore the solution is (1,1). Since the left hand side= right hand side in each equation</span>
8 0
3 years ago
Ben rolls two standard number cubes 36 time. predict how many time he will roll a sum of four.
rusak2 [61]
You can make a 6 x 6 square to illustrate  the probabilities 

   1 2 3 4 5 6
1 2 3 4 5 6 7
2 3 4 5 6 7 8
3 4 5 6 7 8 9
4 5 6 7 8 9 *
5 6 7 8 9  * &
6 7 8 9  * & $

* =10, & =11, $ = 12, I wanted maintain spacing

There are 3 4's. So it is 3/36 chance, which is 1/12 chance.
6 0
3 years ago
( 4 + − 5 ) × ( 7 − − 3 )
SSSSS [86.1K]

Answer:

-10

Step-by-step explanation:

4+-5 is the same as 4-5 =-1

7--3 is the same as 7+3 =10

-1 * 10 = -10

4 0
2 years ago
Read 2 more answers
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