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bogdanovich [222]

3 years ago

6

Is y=x^2 a proportional relationship?

1 answer:

TiliK225 [7]3 years ago

6 0

Answer:

is y=x^2 a proportional relationship?

${ \sf{yes. \: constant \: of \: proportionality = 1}}$

is y=2+x a proportional relationship?

${ \sf{no. \: unless \: y \: is \: proportinal \: to \: (2 + x)}}$

is y=2/x a proportional relationship?

${ \sf{yes. \: where \: proportianality \: constant \: is \: 2}}$

is y=2x a proportional relationship?

${ \sf{yeah. \: constant \: is \: 2}}$

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A tennis ball travels at speed of 120 miles per hour.convert this rate to feet per second

Vanyuwa [196]

$120\frac{mile}{hour}\\\\
1 \ mile=5280\ feet\\
1\ hour=3600\ seconds\\\\
120\frac{mile}{hour}=120*\frac{5280}{3600}=\frac{120*5280}{3600}=\frac{633600}{3600}=176\frac{feet}{second}\\\\
\boxed{120\frac{mile}{hour}=176\frac{feet}{second}}$

4 0

3 years ago

Simplify the product (x-4)(x+3)

Kamila [148]

Answer:

Final answer is $x^2-x-12$ .

Step-by-step explanation:

Given expression is $\left(x-4\right)\left(x+3\right)$ .

Now we need to find the product of the given expression $\left(x-4\right)\left(x+3\right)$ .

$\left(x-4\right)\left(x+3\right)$

$=x\left(x-4\right)+3\left(x-4\right)$

$=x^2-4x+3x-12$

combine like terms

$=x^2-1x-12$

$=x^2-x-12$

Hence final answer is $x^2-x-12$ .

7 0

4 years ago

Read 2 more answers

Eric scored 95% on his math test. He got 19 problems correct. How many questions were on the test?

Leviafan [203]

i'm pretty sure it's 20.

8 0

3 years ago

Please help me solve this answer! :)

taurus [48]

Answer:

2,912 People

Step-by-step explanation:

12% of 2,600 is 312

add 312 to 2,600

end up with

2,912 People

5 0

3 years ago

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Evaluate f(x)3x + 8 for x = 1.<br><br> A. -11<br> B. 5<br> C. 11<br> D. 3

mariarad [96]

Answer:11

Step-by-step explanation:

f(x)=3x+8

f(1)=3(1)+8

f(1)=3+8

f(1)=11

5 0

3 years ago