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
kompoz [17]
3 years ago
10

Solve the proportions using cross products. Round to the nearest hundredth is necessary. 21miles/49hours = 15miles h hours

Mathematics
1 answer:
SSSSS [86.1K]3 years ago
8 0

\dfrac{21}{49}=\dfrac{21:7}{49:7}=\dfrac{3}{7}\\\\\dfrac{21}{49}=\dfrac{15}{h}\to\dfrac{3}{7}=\dfrac{15}{h}\qquad\text{cross multiply}\\\\3h=(7)(15)\\\\3h=105\qquad\text{divide both sides by 3}\\\\\boxed{h=35}\\\\Answer:\ 35\ hours

You might be interested in
If f(x)=3|x-2|, what is f(5.9)? a: 9 b: 10 c: 11 d: 12
Mice21 [21]
|a|=  \left\{\begin{array}{ccc}a&if&a\geq0\\-a&if&a \ \textless \  0\end{array}\right\\\\f(x)=3|x-2|\\\\f(5.9)=3|5.9-2|=3|3.9|=3\cdot3.9=11.7
7 0
3 years ago
Read 2 more answers
Please help me out with this!!<br> BRAINLIEST AVAILABLE!!
lapo4ka [179]

Answer:

xy = 1

k = 79

Step-by-step explanation:

Question One

The first and third frames look to me to be the same. I'll treat them that way.

y = x^2                        Equate y = x^2 to the result of 2y + 6 = 2x + 6

2y + 6 = 2(x + 3)         Remove the brackets

2y + 6 = 2x + 6           Subtract 6 from both sides

2y = 2x                       Divide by 2

y = x

Now solve these two equations.

so x^2 = x                  

x > 0

1 solution is x = 0 from which y = 0. This won't work. x must be greater than 0. So the other is

x(x) = x                           Divide both sides by x            

x = 1                            

y = x^2                           Put x = 1 into x^2

y = 1^2                           Solve

y = 1                      

The second solution is

(1,1)

xy = 1*1

xy = 1

Answer: A

Question Two

square root(k + 2) - x = 0

Subtract x from both sides

sqrt(k + 2) = x                Square both sides

k + 2 = x^2                    Let x = 9

k + 2 = 9^2                    Square 9

k + 2 = 81

k = 81 - 2

k = 79

4 0
3 years ago
A fabric manufacturing company has a fabric that is 36 inches wide. If the company needs 75 sq. yards, how many linear feet does
ICE Princess25 [194]
<span>Since the fabric is 36 in. wide, every 36 linear inches (3 feet =1 yard) makes one square yard. The team needed 75 sq yds, thus 3 x 75 = linear feet</span>
6 0
3 years ago
Read 2 more answers
What’s the answer ???
lorasvet [3.4K]

Answer:

2 Liters

Step-by-step explanation:

.25 liters=1/8 fish aquarium

.25x8=2

4 0
3 years ago
in this diagram, AB and CD are Parallel. Angle ABC measure 35 and Angle BAC measure 115, what is the angle of ACE.
ZanzabumX [31]

Answer:

180°

Step-by-step explanation:

I think this is the answer

because the line is straight from the point ACE

see

5 0
3 years ago
Other questions:
  • Can someone please answer this math problem and show your working
    8·1 answer
  • What is 23% of 20???????
    8·2 answers
  • Find the area of the shaded region.​
    8·1 answer
  • How to factor x^2+8x+12
    10·2 answers
  • Megan picks a card from a deck of cards numbered 1-10 and rolls a number cube. What is the probability she chooses a card with a
    11·2 answers
  • 3 times 10^4 - 5 times 10^2 =? In scientific notation
    15·1 answer
  • What is the factor for this expression:<br><br> 4x+20
    5·2 answers
  • Justin started eating lunch at 12:23 and finish at 12:45. How many elapse time while he was eating lunch
    5·2 answers
  • -2(3x-4)+3x=17 solve for x
    11·1 answer
  • Daniel has $600 in a checking account, has $12,000 in a savings account, owns a $12,000 car, and owns a $35,000 house. What is t
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!