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
Volgvan
3 years ago
11

Caroline drove 350 miles. It took her 5 1/4 hours. what was her speed per miles

Mathematics
1 answer:
Helen [10]3 years ago
8 0

Around 70mph count 50miles per 10mph and you’ll get 70mph by the you hit 350miles

You might be interested in
A piece of cardboard measures 10 ft by 10 ft. Four equal squares of size x are removed from the corners. After removing the squa
Gnesinka [82]

Answer:

The value of x would be \frac{5}{3}

Step-by-step explanation:

Given,

The dimension of the cardboard = 10 ft by 10 ft,

∵ After removing four equal squares of size x ( in ft ) from the corners,

The dimension of the resultant box would be,

Length = ( 10 - 2x ) ft,

Width = ( 10 - 2x ) ft,

Height = x ft,

The volume of box,

V=(10-2x)\times (10 - 2x)\times x=x(10-2x)^2 = x(100 - 40x + 4x^2)=100x - 40x^2 + 4x^3

Differentiating with respect to x,

V'=100 - 80x + 12x^2

Again differentiating with respect to x,

V''=-80 + 24x

For maxima or minima,

V'=0

\implies 100 - 80x + 12x^2 = 0

\implies 3x^2 - 20x + 25=0

By quadratic formula,

x=\frac{20\pm \sqrt{20^2-4\times 3\times 25}}{6}

x=\frac{20\pm \sqrt{400 - 300}}{6}

x=\frac{20\pm \sqrt{100}}{6}

x=\frac{20\pm 10}{6}

\implies x = \frac{10}{6}=\frac{5}{3}\text{ or } x = 5

For x = 5/3, V'' = negative,

While for x = 5, V'' = Positive,

Hence, the value of x would be 5/3 ft for maximising the volume.

8 0
3 years ago
3. In ΔABC, AB = 5 inches and BC = 3 inches. Which of the choices represents all possible values for AC, in inches?
Nonamiya [84]

Answer:

2< AC<8

Step-by-step explanation:

For a triangle to exits sum of two sides must always be greater than the the third side

⇒ AC<  AB+ BC =5+3=8 in

⇒AC<8 in

Also, the  difference of the two sides must be smaller than the length of third side

⇒ AC> | AB-BC| = |5-3| =2

AC> 2 in

therefore,  we can say  2< AC<8. Hence, AC can takes 3,4,5,6 values

4 0
3 years ago
A tire is slowly deflating. The graph below shows the pounds per square inch (psi) of pressure as a function of time.
nadezda [96]

Answer:The rate is 4

Step-by-step explanation:

32/8

3 0
3 years ago
What's 30 minutes after 7:30 PM
QveST [7]
30 minutes after 7:30 would be 8:00 PM
7 0
3 years ago
Read 2 more answers
The first number is 14 less than the second number. When she adds them, she gets 40.
Alenkinab [10]

Answer:

second number is 17, first number is 3

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • The amount of money that gabriel made by working for h hours at his part-time job this week is represented by the expression 11.
    9·2 answers
  • Jerry spend $42 to by some shirts. Each of the shirts cost the same whole-dollar amount. How many shirts could he have bought?
    14·2 answers
  • 44.3 in scientific notation
    10·1 answer
  • The main mathematical step used to solve percent proportion is...
    9·2 answers
  • Use the method of your choice to determine the probability below. Being dealt three sixes off the top of a standard deck of well
    11·1 answer
  • Given f(x) = 2x - 3, what is f(-5)? A. –16 B. –13 C. 7 D. 30
    5·1 answer
  • Pretty please can someone help
    6·1 answer
  • Kiran's father is 65 years old. He is 8 years older than three
    11·2 answers
  • What is another way to describe the expression 3(x−y)²?
    13·2 answers
  • Enter the letter of each point on the number line that corresponds to its value.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!