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
Gnoma [55]
3 years ago
10

Perform the indicated operation of 4.2+1.9​

Mathematics
1 answer:
kykrilka [37]3 years ago
4 0

Answer:

6.1

Step-by-step explanation:

hope it helps<3

You might be interested in
A ball is dropped from 45 feet above the ground. With each bounce, its max height is 80% of its previous height. What is the bal
KATRIN_1 [288]

Answer: 1.98 ft

Step-by-step explanation: 45(.8)^14

3 0
2 years ago
A soccer ball is kicked from 3 feet above the ground. the height,h, in feet of the ball after t seconds is given by the function
dexar [7]
Here's our equation.

h=-16t+64t+3

We want to find out when it returns to ground level (h = 0)

To find this out, we can plug in 0 and solve for t.

0 = -16t+64t+3 \\ 16t-64t-3=0 \\ use\ the\ quadratic\ formula\ \frac{-b\±\sqrt{b^2-4ac}}{2a}  \\ \frac{-(-64)\±\sqrt{(-64)^2-4(16)(-3)}}{2*16}  = \frac{64\±\sqrt{4096+192}}{32}

= \frac{64\±\sqrt{4288}}{32} = \frac{64\±8\sqrt{67}}{32} = \frac{8\±\sqrt{67}}{4} = \boxed{\frac{8+\sqrt{67}}{4}\ or\ 2-\frac{\sqrt{67}}{4}}

So the ball will return to the ground at the positive value of \boxed{\frac{8+\sqrt{67}}{4}} seconds.

What about the vertex? Simple! Since all parabolas are symmetrical, we can just take the average between our two answers from above to find t at the vertex and then plug it in to find h!

\frac{1}2(\frac{8+\sqrt{67}}{4}+2-\frac{\sqrt{67}}{4}) = \frac{1}2(2+\frac{\sqrt{67}}{4}+2-\frac{\sqrt{67}}{4}) = \frac{1}2(4) = 2

h=-16t^2+64t+3 \\ h=-16(2)^2+64(2)+3 \\ \boxed{h=67}


8 0
3 years ago
No links, ty &lt;3
levacccp [35]

Answer:

sAy yOu aRe mY bAkA

Step-by-step explanation:

ty for the points <3

4 0
3 years ago
Which set of orders pair does not represent a function
alexandr402 [8]

Answer:

The third answer is correct.

Step-by-step explanation:

A function must have an output for every input and answer number 3 is the only one that has a unique output for every input.

8 0
2 years ago
70 POINTS PLUS BRAINLIEST
dem82 [27]

Answer:

24.7 feet

Step-by-step explanation:

This is a Pythagorean theorem question

The ladder is the hypotenuse or c

the distance from the wall is a leg or a

and the wall is the other leg or b

a² + b² = c²

a² + 17² = 30²

a²  + 289 = 900

        -289    -289

          b² = 611

         √        √

          b = √611

           b = 24.7 feet

5 0
3 years ago
Read 2 more answers
Other questions:
  • If a 40-foot tree casts a 12-foot shadow, find the length of the shadow cast by a 28-foot tree
    12·2 answers
  • Pls help :(((((((((((
    9·1 answer
  • 1.6 hours to 0.95 hour =???
    6·1 answer
  • What is the unit rate, expressed in kilometers per minute?
    14·2 answers
  • The final exam scores in freshman English at a large high school are normally distributed with a mean of 84% and a standard devi
    6·1 answer
  • 1000 randomly selected Americans were asked if they believed the minimum wage should be raised. 600 said yes. Construct a 95% co
    10·1 answer
  • 3-3k+7k=5b solve for k 
    13·1 answer
  • Yi Ting weighs 8.3 kg kilograms her older brother is four times as heavy as Yi Ting how much does her older brother weigh in kil
    7·1 answer
  • A room covers 299.6 square feet. A painter paints the room in three days. The first day he covers 2/7 of the area. The next day
    9·2 answers
  • Pls help me with this question
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!