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
Serggg [28]
2 years ago
12

Help me one this one​

Mathematics
2 answers:
Tanya [424]2 years ago
8 0

<em><u>ANSWER:</u></em>

<u>A </u><u>=</u><u> </u><u>1</u><u>5</u><u>3</u><u>.</u><u>9</u><u>4</u><u>c</u><u>m</u><u>²</u>

<em><u>EXPLANATION:</u></em>

<em><u>a \:  = \pi \: r {}^{2}  = \pi. {7}^{2}  = 153.93804cm {}^{2}</u></em>

ipn [44]2 years ago
3 0
The answer is 153.86

You might be interested in
Rob is saving to buy a new MP3 player. For every $13 he earns babysitting, he saves $8. On Saturday, Rob earned $65 babysitting.
Vedmedyk [2.9K]

Answer:

60

Step-by-step explanation:

So you first start off with 13 and 8 you subtract it and get five so he uses 5 every time he gets paid and you subtract 5 from 65 and get 60

--Hope this helps

6 0
3 years ago
What is 3 and 8 tenths as a decimal
BartSMP [9]
3.8 is it as a decimal

6 0
3 years ago
Which alphabet is missing V S P W T P_​
slavikrds [6]

Answer:

E

Step-by-step explanation:

6 0
3 years ago
The difference between the two roots of the equation 3x^2+10x+c=0 is 4 2/3 . Find the solutions for the equation.
andrezito [222]

Answer:

Given the equation: 3x^2+10x+c =0

A quadratic equation is in the form: ax^2+bx+c = 0 where a, b ,c are the coefficient and a≠0 then the solution is given by :

x_{1,2} = \frac{-b\pm \sqrt{b^2-4ac}}{2a} ......[1]

On comparing with given equation we get;

a =3 , b = 10

then, substitute these in equation [1] to solve for c;

x_{1,2} = \frac{-10\pm \sqrt{10^2-4\cdot 3 \cdot c}}{2 \cdot 3}

Simplify:

x_{1,2} = \frac{-10\pm \sqrt{100- 12c}}{6}

Also, it is given that the difference of two roots of the given equation is 4\frac{2}{3} = \frac{14}{3}

i.e,

x_1 -x_2 = \frac{14}{3}

Here,

x_1 = \frac{-10 + \sqrt{100- 12c}}{6} ,     ......[2]

x_2= \frac{-10 - \sqrt{100- 12c}}{6}       .....[3]

then;

\frac{-10 + \sqrt{100- 12c}}{6} - (\frac{-10 + \sqrt{100- 12c}}{6}) = \frac{14}{3}

simplify:

\frac{2 \sqrt{100- 12c} }{6} = \frac{14}{3}

or

\sqrt{100- 12c} = 14

Squaring both sides we get;

100-12c = 196

Subtract 100 from both sides, we get

100-12c -100= 196-100

Simplify:

-12c = -96

Divide both sides by -12 we get;

c = 8

Substitute the value of c in equation [2] and [3]; to solve x_1 , x_2

x_1 = \frac{-10 + \sqrt{100- 12\cdot 8}}{6}

or

x_1 = \frac{-10 + \sqrt{100- 96}}{6} or

x_1 = \frac{-10 + \sqrt{4}}{6}

Simplify:

x_1 = \frac{-4}{3}

Now, to solve for x_2 ;

x_2 = \frac{-10 - \sqrt{100- 12\cdot 8}}{6}

or

x_2 = \frac{-10 - \sqrt{100- 96}}{6} or

x_2 = \frac{-10 - \sqrt{4}}{6}

Simplify:

x_2 = -2

therefore, the solution for the given equation is: -\frac{4}{3} and -2.


3 0
3 years ago
SHOW WORK PLEASE THANKS <br> WILL GIVE BRAINLIEST ANSWER :)<br> 7238 oz equals how many kilograms
hammer [34]

Answer:

205.1938

Step-by-step explanation:

I tried

4 0
3 years ago
Read 2 more answers
Other questions:
  • How many nines are in 63?
    7·1 answer
  • -11.3 is rational or irrational ? explain? 0.083 and 2.1371938 to please if its not much to ask?
    8·1 answer
  • GEOMETRY HELP ASAP PLEASE
    9·1 answer
  • Whichofthefollowingdescribe square root of 0 ?
    7·1 answer
  • Kari and Samantha have determined that their water-balloon launcher works best when they launch the balloon at an angle within 3
    7·2 answers
  • I should know this, but i'm really stumped, I keep getting different answers.
    10·1 answer
  • How do you prove theorems behind two parallel lines cut by a transversal?
    9·1 answer
  • I have a question with a mathematical problem that I have! If m
    13·2 answers
  • A number cube has sides that are labeled 1 to 6. Jamal rolls the number cube. What is the probability that he will roll a 22?
    7·1 answer
  • Are 2a and 2b like terms ? explain .
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!