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
Papessa [141]
3 years ago
10

Two cars are traveling in the same direction. The first car is going 40 mi/h and the second car is going 55 mi/h. The first car

left 3 hours before the second car. Which equation could you solve to find how many hours it will take for the second car to catch up to the first car? A 40t+ 3 = 55t B 40t + 120 = 55t C 55t + 165 = 40t D 55t+ 3 = 40t
Mathematics
1 answer:
Kipish [7]3 years ago
4 0
This answer should be A
You might be interested in
If f(x) =ax+b ,f(-3)=-4 and f(3)=2, find the value of a and b please help​
galina1969 [7]

Answer:

a = -⅓

b = 3

Step-by-step explanation:

-3a + b = 4

3a + b = 2

b = 4 + 3a = 2 - 3a

6a = -2

a = -2/6

a = - ⅓

-> b = 4 + 3(-⅓)

b = 4 - 1

b = 3

8 0
2 years ago
What is the sign of A + B
DochEvi [55]

Answer: Negative

Step-by-step explanation: Since the values of A and B are both negative (because they are below 0), adding them together will also make the sum negative.

8 0
2 years ago
Sandra swims the 100-meter freestyle for her school’s swim team. Her state’s ranking system awards 3 points for first place, 2 p
Elina [12.6K]

Answer:

2.25

Step-by-step explanation:

The total frequency is:

20 + 12 + 6 + 2 = 40

Calculate the probability of each score:

P(X=3) = 20/40 = 0.50

P(X=2) = 12/40 = 0.30

P(X=1) = 6/40 = 0.15

P(X=0) = 2/40 = 0.05

So the expected value is:

E = (3)(0.50) + (2)(0.30) + (1)(0.15) + (0)(0.05)

E = 2.25

5 0
3 years ago
Simplify the expression below. Show your Work.
lord [1]

Answer:

7y + 24

Step-by-step explanation:

Think of the negative sign to the left of the parentheses as being -1. Then apply the distributive property. The effect of a negative sign to the left of parentheses or a 1 to the left of parentheses is that each term inside the parentheses changes sign.

-(-7y - 24) = -1(-7y - 24) = (-1)(-7y) - (-1)(24) = 7y - (-24) = 7y + 24

8 0
3 years ago
Use the equation below to find y, if m= 8 and x=6.<br> y=mx <br> y=?
Lunna [17]

Answer:

The value of y is 48.

Step-by-step explanation:

You have to substitute the values into the equation :

y = mx

let \: m = 8,x = 6

y = 8 \times 6

y = 48

8 0
2 years ago
Read 2 more answers
Other questions:
  • Find the length of the side of a square with an area of 169 <br> A.338<br> B.106<br> C.26<br> D.13
    11·2 answers
  • ANSWER THE QUESTION IN THE PICTURE?<br><br>(I selected a random answer)
    6·2 answers
  • PLZ HELP ASAP SOLVE SIMMILAR TRAINGLES
    6·1 answer
  • The sum of eight and a number squared is equal to ten
    12·1 answer
  • If f(x) = 1 - X, which value is equivalent to [f(I)]?<br> О0<br> 0 1<br> O v2<br> Ov-1
    12·1 answer
  • X2 + 2 – 42 = 0.<br> Solve quadratic equation
    12·2 answers
  • I need help ASAP please
    7·1 answer
  • Can someone help me? will give branliest
    7·2 answers
  • What is an equation of the line that passes through the point (5,-2)(5,−2) and is parallel to the line 2x-5y=352x−5y=35?
    5·1 answer
  • Write the quotient 13/5 - i in the form a + bi .
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!