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nalin [4]
2 years ago
15

Help again 14 more questions

Mathematics
1 answer:
MArishka [77]2 years ago
5 0

Answer:

A certain element has 25 protons.

Step-by-step explanation:

Please mark brainliest

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Hey guys I need help! I'm having so much trouble with understanding this...
Aleonysh [2.5K]
What part do you have trouble with
8 0
2 years ago
If x varies directly as y, then what is y when x = 4,<br> knowing that x = 60 when y = 5?
Basile [38]

Answer:  The answer would be 1/2

Step-by-step explanation:

<em>Y varies DIRECTLY as x. Find the constant of variation, k, if y = -5x </em>

<em>The first sentence is there for information, the constant is a number( 1,2,3...so on) , so the only number is -5 </em>

<em>It is a linear equation meaning equation of a straight line. </em>

<em>its form is y= mx+b, where m is the slope of the line, b is the y intercept when x=0. these info you have to memorize like your life depend on it. </em>

<em>next, y varies directly as x. If y = 15 when x = 60, find y when x = 100 </em>

<em>if y= 15, when x=60, then there is a number m such that m*y= 60 </em>

<em>or m= 60/y= 60/15 =4 </em>

<em>so the equation is y=4x. in this cause, the b=0 </em>

<em>so when x=0, y=0 </em>

<em>The distance a car travels at a constant speed varies directly as the time the car spends traveling. If a car traveled 105 miles in 3 hours, how far could the car travel in 5 hours? </em>

<em>remember that distance = speed times time. </em>

<em>or d=Vt </em>

<em>so car goes 105 miles on 3 hours </em>

<em>how far it goes in one hour? </em>

<em>if you know that, then you can tell how far it goes in 5 hours.</em>

<em>Hope I made it non tough enough</em>

<em>Please give me Brainliest</em>

4 0
3 years ago
Read 2 more answers
Simplify each expression using order of operations. (the one that’s circled)
Zepler [3.9K]

Answer:

18

Step-by-step explanation:

1. 6x6=36

2. 8+36=44

3. 44/11=4

4. 7x2=14

5. 4+14=18

5 0
2 years ago
Cups are sold in packs and in boxes. There are 12 cups in each pack. There are 18 cups in each box.
valina [46]

Answer:

12p * 18b is the equation

6 0
3 years ago
Read 2 more answers
Tom worked 74 hours in 2 weeks. if he earns 7.55 a hour, how much did he earn in the 2 week period?
sveticcg [70]
558.7 , because 74 x 7.55 = 588.7 , it would be his total for the two weeks
3 0
2 years ago
Read 2 more answers
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