Pumping iron: 10x+90=0
Fit for life: 15x+50=0
Set them equal to each other. 10x+90=15x+50. Solve for x. Subtract 50 from both sides, get 10x+40=15x, then subtract 10x from both sides, getting 40=5x. Divide 5 from both sides to isolate x, x=8. After 8 months the two gyms will cost the same.
Answer:
108
Step-by-step explanation:
4*12=48 chocolate
3*12=36 peanut
2*12=24 sugar
48+36+24=108
it can be used to calculate the length of a circular bracelet
Answer:
30
Step-by-step explanation:
the 60 degrees can be transferred to the side right next to the 4x. that means 4x+60=180, 4x=120, x=30
<em>Answer:
</em>
<em>Elena's running speed is 5 miles/hour
</em>
<em>Explanation:
</em>
<em>The speed is defined as the covered distance per unit time
</em>
<em>In the problem, we have:
</em>
<em>The distance covered is the length (circumference) of the circular track which is given as of a mile.
</em>
<em>We are also given that she completes each lap (she completes of a mile) in of an hour
</em>
<em>
</em>
<em>To get her speed, we will divide the distance covered by the time taken to cover this distance
</em>
<em>This is done as follows:
</em>
<em>speed = miles/hour
</em>
<em>This means that:
</em>
<em>Elena can run 5 miles each hour</em>
By shesney <3