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
pshichka [43]
3 years ago
9

4x-49=0" align="absmiddle" class="latex-formula">
Mathematics
2 answers:
Alex777 [14]3 years ago
8 0
15x^2+14x-49=0\\\\
Terms:\\
a=15\ \ \ \ b=14\ \ \ \ c=-49\\
Quadratic\ Formula:\\\\
x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\
x=\dfrac{-14\pm\sqrt{196+2,940}}{30}\\\\
x=\dfrac{-14\pm\sqrt{3,136}}{30}\\\\
x=\dfrac{-14\pm56}{30}

Roots:\\\\
x'=\dfrac{-14+56}{30}\\\\
x'=\dfrac{42}{30}\\\\
x'=\dfrac{21}{15}\\\\
\boxed{x'=\dfrac{7}{5}}\\\\\\\\
x''=\dfrac{-14-56}{30}\\\\
x''=\dfrac{-70}{30}\\\\
\boxed{x''=\dfrac{-7}{3}}
Paraphin [41]3 years ago
5 0
15x² + 14 - 49 = 0
x = <u>-(14) +/- √((14)² - 4(15)(-49))</u>
                         2(15)
x = <u>-14 +/- √(196 + 2940)</u>
                     30
x = <u>-14 +/- √(3136)</u>
                 30
x = <u>-14 +/- 56</u>
             30
x = <u>-14 + 56</u>      x = <u>-14 - 56</u>
           30                     30
x = <u>42</u>               x = <u>-70</u>
      30                      30
x = 1.4              x = 2.33...
You might be interested in
Choose the equation that represents this situation. Use w to represent the variable. Blaise spends 4 hours each week jogging at
nikdorinn [45]

Since 4 hrs is three times the amount of time in the wight room, the equation would be:

4 = 3w   or   3w = 4

C

5 0
3 years ago
Solve for z.<br> -30 = 5(x+1)
melisa1 [442]
-30= 5 (x+1 )

-5 from 5= 0
-5 from -30= -35

-35= (x+1)

1/-35= -35
6 0
2 years ago
How to find the values of x and y.
SpyIntel [72]
Use the trigonometric function.

\sin30^o=\dfrac{x}{20}\\\\\sin30^o=\dfrac{1}{2}\\\\\dfrac{x}{20}=\dfrac{1}{2}\ \ \ |\cdot20\\\\x=10

\sin60^o=\dfrac{y}{20}\\\\\sin60^o=\dfrac{\sqrt3}{2}\\\\\dfrac{y}{20}=\dfrac{\sqrt3}{2}\ \ \ \ |\cdot20\\\\y=10\sqrt3
8 0
3 years ago
Anyone a fan of Heathers? If so, wanna be friends?
Shtirlitz [24]

Answer:

Yes, I like the movie and the musical.

Step-by-step explanation:

I'll be your friend.

8 0
3 years ago
Mrs. Spring left half of her estate to her son Sam. She left half of the remaining half to her cousin Fred. She left half of the
FinnZ [79.3K]

The total amount of Mrs. Spring's estate is $200,000

<h3>What is a fraction?</h3>

A fraction is written in the form of a numerator and a denominator where the denominator is greater than the numerator.

Example: 1/2, 1/3 is a fraction.

We have,

Let the total estate = 100x

Share left with Sam = 50x

Remaining share = 50x

Now,

Share left with cousin Fred = 1/2 of 50x = 25x

Remaining  share = 25x

Share left with nephew Bill = 1/2 x (25x) = 12.5x

Remaining share = 12.5x

Share left with the care of the cat Chester = 12.5x

12.5x = $25,000

Now,

12.5x = $25,000

Multiply with 100/12.5 on both sides.

100/12.5 x 12.5x = 100/12.5 x $25,000

100x = $200,000

Thus,

The total amount of Mrs. Spring's estate is $200,000

Learn more about fractions here:

brainly.com/question/24370499

#SPJ1

5 0
1 year ago
Other questions:
  • 600mm by 500mm oven tray how many 25cm trays can you fit on
    8·1 answer
  • What is the inverse of the function h(x) = 5/2x+4?
    12·1 answer
  • Need help don't know how to solve ​
    15·2 answers
  • A soda company is filling bottles of soda from a tank that contains 500 gallons of soda. At most, how many 20 ounce bottles can
    9·1 answer
  • What is 62 less than the product of 22 and 3
    8·1 answer
  • What do you mean by trigonometry​
    12·1 answer
  • I don't really understand these Questions..Can you help me?
    11·1 answer
  • Is the fraction 4/5 proper or improper
    9·1 answer
  • Which number produces a rational number when added to o ? Α. π= pie
    8·1 answer
  • Select the correct answer. Which function is represented in this graph? A. f(x)=|x-1|-5
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!