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hammer [34]
3 years ago
8

Please help, will mark brainliest

Mathematics
2 answers:
marysya [2.9K]3 years ago
8 0

Answer:

120x

Step-by-step explanation:

y = kx

360 = 3k

k = 120

y = 120x

Ganezh [65]3 years ago
3 0

Answer:

y = 120x

Step-by-step explanation:

y=mx + b is what we need where m is the slope and b is the y-intercept.

the train travels at about 120km/hour, thus the slope is 120.

y= 120x +b. to find the y intercept plug in any coordinate.

240 = 120(2) +b. you find that the y-intercept is 0.

final equation: y= 120x

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mr_godi [17]

Answer:

4250

Step-by-step explanation:

0.13 = 13%

1000×0.13=130
130×25= 3250 + 1000 = 4250

What I did:

You have to turn the percent to a decimal first

Then multiply the decimal by the first investment amount (1000)

then multiply that by the years that you have before retirement
You add that amount plus the 1000 you have started with

8 0
2 years ago
Please help me!! This is math 7th grade
Musya8 [376]

Answer:

14) false

15) false

Step-by-step explanation:

14) 120% of a positive whole number is always greater than the number. If the number is 1, 120% of it would give us 1.2 which is greater than 1. However if the number is a negative whole number, 120% of it would give us a smaller number. Let's try -1. 120% of -1 would give us -1.2, which is smaller than -1. Hence the statement is false.

15) 0.5% of a number is 0.5/100 of the number so we should multiply the number by 5/1000. 5/100 is only 5% of the number. Hence the statement is also false.

6 0
3 years ago
Which system of equations can you use to find the roots of the equation?<br> x3 – 10x = x2 – 6
vivado [14]

\bf \stackrel{y}{x^3-10x}=\stackrel{y}{x^2-6}\implies  \begin{cases} y=x^3-10x\\ y=x^2-6 \end{cases}

3 0
3 years ago
Read 2 more answers
Simplify and leave in radical form. <br> 8√x^2 y^6
IrinaK [193]

Step-by-step explanation:

\sqrt[8]{ {x}^{2}  {y}^{6} }  \\  \\  = ( {x}^{2} {y}^{6}  )^{ \frac{1}{8} }  \\  \\  =  {x}^{2 \times \frac{1}{8}} {y}^{6\times \frac{1}{8}}  \\  \\  = x^{\frac{1}{4}} {y}^{3\times \frac{1}{4}}  \\  \\   = x^{\frac{1}{4}} {y}^{\frac{3}{4}}  \\  \\   =  \sqrt[4]{x {y}^{3} }  \\

4 0
3 years ago
PLEASE HELP!!!!!<br> Combine the like terms to create an equivalent expression. 8k+5k
horsena [70]

Answer:

13k

Step-by-step explanation:

Given: 8k+5k

Finding the equivalent expression.

We know the rule of addition is that adding two positive integers will give positive result or sum.

Now, lets find the equivalent expression of 8k+5k.

∴ 8k+5k= 13k

Hence, the required equivalent expression is 13k.

3 0
2 years ago
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