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cluponka [151]
3 years ago
7

3y=15x-12 How to solve for y?

Mathematics
2 answers:
vitfil [10]3 years ago
5 0
Have to isolate the variable. divide everything by 3 so the problem would now be y=5x-4
insens350 [35]3 years ago
3 0
First you divide both sides by three.

3y=15x-12
/3    /3  /3

y=5x-4

y cannot be solved in this equation, but you should get y by it self.
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Yinting wants to start adding weight lifting to her exercise routine. Her trainer suggests that she starts with 40 repetitions f
lapo4ka [179]

Answer:

7 Weeks

Step-by-step explanation:

If she starts off with 40 reps for the first week, and she adds 6 reps a week,  until she gets to 82 reps a week, then it would be<em> 40 + 6 x answer = 82</em>. Now, there are a couple ways you can do this, but the easiest but not shortest way is to do it one by one.

so, <em>40+6x1= 46</em>

<em>40+6x2= 52</em>

<em>40+6x3= 58</em>, and so on and so forth, until you get to <em>40+6x7</em><u>,</u> which equals 82, therefore giving you the answer of 7, but the way quicker way is to take the total (82) and subtract the number of reps she starts out with (40), then divide that number by the amount that it increases each week (6), so:

(82-40)÷6, which will also give you the answer of 7, or 7 weeks.

5 0
3 years ago
Squeezy fruit drink is 36% pure orange juice and 64% water, if 1 L of Squeezyfruit drink is mixed with 600 mL of water what is t
frez [133]
1 L, or 1000 mL, of the drink contains 360 mL juice. If there is a total of 1600 mL, we have 360/1600=9/40 (or .225) as the concentration of juice.
3 0
3 years ago
A cone has a lateral area of 108 in2 and a base area of 48 in2. What is the surface area of the cone? A. 60 in2 B. 140 in2 C. 12
Andrei [34K]
Based on the given data, the following formula will be useful;
Area of the base, A = pi*r^2
Lateral Area, A(l) = pi*r*sqrt of h^2 + r^2
Surface Area, A(s) = pi*r*(r+sqrt of h^2 + r^2)
Based on the given area of the base, the radius can be calculated and is equal to 3.9088 in. Based on the given lateral area, the h or the lateral edge can be calculated and is equal to 7.8785 in. Given all the information needed, and directly substituting to the above formula for surface area, SA is equal to 156 in^2 (option D)
5 0
3 years ago
I really need help!
DaniilM [7]

Answer:

Two non co-linear segments with a slope of 3 in a coordinate plane would mean that the two segments are parallel to each other and not attached to each other. Having the same slope is the definition of being parallel in the same plane.

Step-by-step explanation:

6 0
2 years ago
What is the y-intercept of y=-3x + 6?<br> O 6<br> -3<br> 3<br> 0 6
Bezzdna [24]

Answer:

6

Step-by-step explanation:

Slope intercept form is y=mx+b, with m being the slope and be being the y intercept, so when you look for what b is in the equation for y=-3x+6 then 6 is b.

5 0
3 years ago
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