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VARVARA [1.3K]
3 years ago
9

Which equation is equivalent to Sq rt x+ 11 = 15?

Mathematics
1 answer:
vladimir2022 [97]3 years ago
7 0
I do y get this but it might be 4
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It took Jen, who biked at a speed of 12 mph, 20 minutes to get home. What is Jim’s speed, if it took him only 15 minutes to bike
nataly862011 [7]
1)  Speed = 12mph =12 mi/1 h =12 mi/ 60 min = 1/5 mi/ min 
1 h= 60 min
t =20 min
Distance=speed*time =1/5 *20 (mi/min *min)= 4 mi

2) If he would bike for 15 min
Distance=speed*time 
speed = distance/time = 4mi/15 min =4 mi :(1/4 h)=4*4= 16 mi/h
15 min =1/4 h



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2 years ago
I attached a picture please tell me where she made a mistake i am really struggling thanks.
alekssr [168]

Answer:

step 1 is wrong ........

4 0
3 years ago
Which of these mappings is a function?
strojnjashka [21]

Answer:

B

Step-by-step explanation:

My power of guesssing :)

6 0
3 years ago
Derik earns $10.00 per hour. He works 35 hours per week. How much will he earn in two weeks? If he spends $50, how much will Der
Ksenya-84 [330]

Answer:

650

Step-by-step explanation:

so the way I did this was by adding how much he works per week which is 35 per week. so he works 70 hours in 2 weeks. he earns 10 dollars per hour. so 10 times 70 you get 700 but he spends 50. so 700 minus 50. you get 650. he has 650 dollars left.

5 0
3 years ago
A boat heads north at 30 mph while a steamer heads east at 40 mph at the same time. When is the distance between them 50 mi?
Vera_Pavlovna [14]

let t = time (hrs) that they are 50 mi apart

Use pythag here; a^2 + b^2 = c^2; dist = speed * time

(30t)^2 (40t)^2 = 50^2

900t^2 + 1600t^2 = 2500

It's obvious that t = 1 hr

7 0
3 years ago
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