1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
katovenus [111]
3 years ago
9

a race car is driving under the caution flag at 440 feet per second begins to accelerate at a constant rate after the warning fl

ag. the distance traveled since the warning flag in feet is characterized by 30t^2+440t, where t is the time in seconds after the car starts accelerating again. How long will the car take to travel 150 feet?
Mathematics
1 answer:
slava [35]3 years ago
6 0

Answer: \frac{1}{3}\ s

Step-by-step explanation:

Given

Distance traveled is s=30t^2+440t

for s=150 ft

\Rightarrow 30t^2+440t=150

\Rightarrow 30t^2+440t-150=0\\\Rightarrow 3t^2+44t-15=0\\\Rightarrow (3t-1)(t+15)=0\\\Rightarrow t=\dfrac{1}{3}\ s

You might be interested in
Bert's bike shop has a $400 bicycle marked with a sign that says take a 35% discount what is the sale price
Inessa [10]

Answer:

$260

Step-by-step explanation:

Turn the percentage into a decimal.

35% -> 0.35

Multiply.

400 * 0.35 = 140

Subtract.

400 - 140 = $260

Best of Luck!

7 0
3 years ago
Read 2 more answers
X^2-12x+12=0 completing the square
Makovka662 [10]

Answer:

x1 = 6 + 2√6 or x2 = 6 - 2√6

Step-by-step explanation:

x² - 12x + 12 = 0

We need to use formula:

a² - 2ab + b² = (a - b)².

x² - 12x  =  - 12

x² - 2*6x + 6²- 6² = - 12

(x - 6)² - 36 = -12

(x - 6)² = - 12 + 36

(x -6)² = 24

(x - 6) = √24 or (x-6) = -√24

(x - 6) = 2√6 or (x-6) = - 2√6

x = 6 + 2√6 or x = 6 - 2√6

3 0
2 years ago
Please I don’t understand I need help thank you
kirza4 [7]

Answer:

Step-by-step explanation:

8 0
2 years ago
Brian has a pies that is 10 inches is diameter. he has 9 people over and would like everyone to have a equal slice . how long is
krek1111 [17]

3.14 inches so they each get a \pi of pie
4 0
3 years ago
This shape is made using three semicircles The smaller semicircle have diameters of 10cm Calculate the shaded area Take 3.142 an
CaHeK987 [17]

Answer:

The shaded area is 314.2 cm²

Step-by-step explanation:

Here we have the diameter, d₁ of the smaller semicircles as 10 cm

We note that the larger semicircle is subtended (bounded) by the two smaller semicircles;

1 shaded small semicircle and the other is blank

Therefore, the diameter, d₂ of the large semicircle = 10 + 10 = 20 cm

Also the area of the shaded figure consists of the removal of one small semicircle and the addition of the other semicircle to the area of the larger semicircle such that the area of the shaded figure is as follows

Shaded area of figure = π·d₂²/4 + π·d₁²/4 - π·d₁²/4 = π·d₂²/4 = π×20²/4 = 100×3.142 = 314.2 cm²

Shaded area = 314.2 cm².

6 0
3 years ago
Other questions:
  • During the grand opening of an electronics store, any customer has an 11% chance of winning a free laptop. What is the chance th
    9·2 answers
  • Find two numbers such that the sum of the first and three times the second is 5 and the sum of the second and two times the firs
    11·1 answer
  • Model and record 2 digit addition
    14·2 answers
  • Management at a seaside resort is publishing a brochure and wants to include a statement about the proportion of clear days duri
    12·1 answer
  • You buy a movie ticket for $5.25 and popcorn for $2.98. You pay with a 10-dollar bill.
    11·2 answers
  • HALP HALP HALP HALP HALP
    15·1 answer
  • 39. Gabriella wants to invest $6,500 mtoa savings account. She finds a simple interest and
    15·1 answer
  • People drive, on average, 14,063 miles per year. About how many miles each week is that?
    14·2 answers
  • What is m = 2/3; (6, 1) in slope intercept form? :)
    6·2 answers
  • The school Amina goes to is selling tickets to a choral performance. On the first day of ticket sales the school sold 3 senior c
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!