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Brut [27]
3 years ago
5

Three more than the product of a number 4 is 15

Mathematics
2 answers:
ivann1987 [24]3 years ago
6 0
X=3    
4 times three is 12 plus three is 15
weqwewe [10]3 years ago
3 0
3+4x=15 
4x=15-3
4x=12
x=12/4
x=3

The check is:

<span>If x=3 then, </span>

3+ (4 X 3)=15

<span>3+12=15</span>
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An item is regularly priced at $30. It is now priced at a discount of 30% off the regular price. What is the price now?
stiv31 [10]
The price of the item will be 21$
7 0
2 years ago
How do you solve: secx=-5/2, tanx&lt;0<br><br> Find all six trig functions
Brut [27]

Answer:

sec theta = (sqrt24/5) cos theta = -2/5 tan theta = (-[sqrt 21]/2) sec theta = 5/2 csc theta = (5sqrt21)/21 cot theta = (-2sqrt21)/21

Step-by-step explanation:

During the problem, secx = -5/2, we can assume that as cos = -2/5. -2 = x. 5 = r. find for Y with: x^2+y^2=r^2. After that, plug in for the variables and you get all the answers. Rationalize the square roots, don't forget.

5 0
2 years ago
Find the ratio a:b-<br><br> 1) 2a=9b<br> 2) a+b=3b<br><br> please explain your work
Alex777 [14]

1) 2a = 9b    ⇒ 2:9

2) a + b = 3b   ⇒   a = 2b   ⇒   1:2

Answers: 2:9  and  1:2

6 0
3 years ago
Ali used the expressed 8+25×2-45 to find how many CDs he has. how many CDs dose he have
MatroZZZ [7]

Ali has 13 CD's

Here's how I got my answer:

Step 1: Simplify 25 * 2 to 50. Which leaves us with 8 + 50 - 45

Step 2: Simplify 50 - 45 to 5. Which leaves us with 8 + 5.

Step 3: Simplify 8 + 5, to get your answer, 13.

7 0
3 years ago
Read 2 more answers
HELP Combining like terms solve all please :) c
In-s [12.5K]

Answer:

11. x = -16

12. k = 6

13. x = -19

14. x = -6

15. x = -20

16. Combining like terms isn't to be used on this type of problem. I'm sorry, can you guess on this one?

17. x = 19

18. n = -10

19. b = 11

20. n = 4

21. r = -6

22. n = -4

Again super sorry about question 16 :(

6 0
2 years ago
Read 2 more answers
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