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
MakcuM [25]
3 years ago
14

Help me pls its simple (hopefully) pls dont guess

Mathematics
1 answer:
Rzqust [24]3 years ago
5 0

Answer:

15.8 in.

Step-by-step explanation:

63.2 / 4 = 15.8

You might be interested in
Show work please<br> \sqrt(x+12)-\sqrt(2x+1)=1
Nesterboy [21]

Answer:

x=4

Step-by-step explanation:

Given \displaystyle\\\sqrt{x+12}-\sqrt{2x+1}=1, start by squaring both sides to work towards isolating x:

\displaystyle\\\left(\sqrt{x+12}-\sqrt{2x+1}\right)^2=\left(1\right)^2

Recall (a-b)^2=a^2-2ab+b^2 and \sqrt{a}\cdot \sqrt{b}=\sqrt{a\cdot b}:

\displaystyle\\\left(\sqrt{x+12}-\sqrt{2x+1}\right)^2=\left(1\right)^2\\\implies x+12-2\sqrt{(x+12)(2x+1)}+2x+1=1

Isolate the radical:

\displaystyle\\x+12-2\sqrt{(x+12)(2x+1)}+2x+1=1\\\implies -2\sqrt{(x+12)(2x+1)}=-3x-12\\\implies \sqrt{(x+12)(2x+1)}=\frac{-3x-12}{-2}

Square both sides:

\displaystyle\\(x+12)(2x+1)=\left(\frac{-3x-12}{-2}\right)^2

Expand using FOIL and (a+b)^2=a^2+2ab+b^2:

\displaystyle\\2x^2+25x+12=\frac{9}{4}x^2+18x+36

Move everything to one side to get a quadratic:

\displaystyle-\frac{1}{4}x^2+7x-24=0

Solving using the quadratic formula:

A quadratic in ax^2+bx+c has real solutions \displaystyle x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}. In \displaystyle-\frac{1}{4}x^2+7x-24, assign values:

\displaystyle \\a=-\frac{1}{4}\\b=7\\c=-24

Solving yields:

\displaystyle\\x=\frac{-7\pm \sqrt{7^2-4\left(-\frac{1}{4}\right)\left(-24\right)}}{2\left(-\frac{1}{4}\right)}\\\\x=\frac{-7\pm \sqrt{25}}{-\frac{1}{2}}\\\\\begin{cases}x=\frac{-7+5}{-0.5}=\frac{-2}{-0.5}=\boxed{4}\\x=\frac{-7-5}{-0.5}=\frac{-12}{-0.5}=24 \:(\text{Extraneous})\end{cases}

Only x=4 works when plugged in the original equation. Therefore, x=24 is extraneous and the only solution is \boxed{x=4}

4 0
2 years ago
15x -5 = 45 + 19 what is x
SCORPION-xisa [38]

Answer:

x equals 4.6

Step-by-step explanation:

if u need explanation plz tell me so i can help

4 0
3 years ago
Read 2 more answers
Help please help me pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
horsena [70]

Answer:

x=2/5

Step-by-step explanation:

4 0
2 years ago
John's cell phone gives him 1250 minutes for $25. He used 1300 minutes. How much will his cell phone company bill him for? A) Si
Flauer [41]

Answer:

c

Step-by-step explanation:


8 0
3 years ago
Read 2 more answers
What is the slope-intercept from equation of the line that passes through (5,7)and(8,22)?
elena55 [62]

y=5X+32

I hope this helps!

6 0
3 years ago
Other questions:
  • Please show work<br>its due soon<br>i really need answers
    14·1 answer
  • What is the mathematical answer for -15-15-15-13?
    5·2 answers
  • Michelle drove a total of 57.8 kilometers on saturday. she drove 23.5 kilometers from her house to the park. her next stop was t
    7·1 answer
  • This year Jack will be 2 years from being twice as old as your sister Jen. The sum of Jack's age and three times Jen's age is 66
    5·1 answer
  • Please help. What's the answer???
    7·1 answer
  • Plz giving brainiest hurry fast plzz i beg
    9·1 answer
  • 4/9 + 2/9 simplified​
    11·2 answers
  • What's the answer? Anybody know?
    12·2 answers
  • What is the Zero of f ?
    8·1 answer
  • Given f(x)=x2+2x−8, find f(−2).
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!