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alekssr [168]
3 years ago
12

Jean drove 64 miles per hour for a total of 448 miles on a trip. She used the equation below to calculate the time, t, it would

take her to complete the trip.
Mathematics
1 answer:
Alexandra [31]3 years ago
7 0

Answer:

Step-by-step explanation:

since there is no given formula I'm guessing that's what we want to find?

use the dist. = rate * time   formula for this kind of problem

or  d = r*t     ( this looks like the word  "dirt" to me so I call this the dirt formula partly b/c it's dirt simple, and it's generally about moving across some give dist. of dirt  :P )  

so Jean's rate is 64 MPH

her total distance is 448 miles  

rearrange the  d = rt  formula so that you are solving for the thing you don't know.. yet....   t (time)  for this case

soooo...

d/r = t

plug in number

448 / 64 = t

7 = t  (in hours)

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2 years ago
Write the polynomial in standard form 8-5x+x^3-2x^4
yan [13]

Answer:

-2x^4+x^3-5x+8

Step-by-step explanation:

8-5x+x^3-2x^4

Write the polynomial from highest powers of x to lowest

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8 0
3 years ago
Which function has a range of y&lt;3?<br> y=3(2)<br> y=2(3)<br> O y=-(2)* +3<br> O y= (2)* - 3
VARVARA [1.3K]

option C is correct.

<u>Step-by-step explanation:</u>

If a function is defined as

f(x)=a^x where, a>0, then the range of the function is greater than 0.

a^x>0               .... (1)

Option A: Using inequity (1),

2^x>0

Multiply both side by 3.

3(2^x)>0

The range of first function is y>0. Therefore option A is incorrect.

Option B: Using inequity (1),

3^x>0

Multiply both side by 2.

2(3^x)>0

The range of second function is y>0. Therefore option B is incorrect.

Option C: Using inequity (1),

2^x>0

Multiply both side by -1.

-2^x

Add 3 on both the sides.

-2^x+3

y

The range of first function is y<3. Therefore option C is correct.

Option D: Using inequity (1),

2^x>0

Subtract 3 from both the sides.

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The range of second function is y>-3. Therefore option D is incorrect.

7 0
4 years ago
Ms. Ross has 24 students. 2/3 of her students have brown hair. The rest have blonde. How many students have brown?
Dimas [21]
The answer would be 16 because 24 divided by 3 is 8. 8 multiplied by 2 is 16. 16 students have brown hair.
3 0
3 years ago
Read 2 more answers
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Ira Lisetskai [31]

Answer:

(5x+13)+(3x+7)=180°

5x+3x=180°-7°-13°

8x=160°

x=160/8

x=20°

option C is correct

6 0
3 years ago
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