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Amiraneli [1.4K]
3 years ago
7

Correct answer for both getsbrainiest plz help

Mathematics
2 answers:
andrew-mc [135]3 years ago
7 0

Answer:

asdf asdf

Step-by-step explanation:

Zanzabum3 years ago
5 0

(15x - 2) + (7x + 4) = 90

x = 4

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2.<br>√3x + 7 + √x + 1 =2​
taurus [48]

Answer:

  x = -1

Step-by-step explanation:

The usual approach to these is to square the radicals until they are gone.

  \displaystyle\sqrt{3x+7}+\sqrt{x+1}=2\\\\(3x+7) +2\sqrt{(3x+7)(x+1)}+(x+1) = 4\qquad\text{square both sides}\\\\2\sqrt{(3x+7)(x+1)}=-4x-4\qquad\text{subtract $4x+8$}\\\\(3x+7)(x+1)=(-2x-2)^2\qquad\text{divide by 2, square again}\\\\3x^2+10x +7=4x^2+8x+4\qquad\text{simplify}\\\\x^2-2x-3=0\qquad\text{subtract the left expression}\\\\(x-3)(x+1)=0\qquad\text{factor}\\\\x=3,\ x=-1\qquad\text{solutions to the quadratic}

Each time the equation is squared, the possibility of an extraneous root is introduced. Here, x=3 is extraneous: it does not satisfy the original equation.

The solution is x = -1.

_____

Using a graphing calculator to solve the original equation can avoid extraneous solutions. The attachment shows only the solution x = -1. Rather than use f(x) = 2, we have rewritten the equation to f(x)-2 = 0. The graphing calculator is really good at showing the function values at the x-intercepts.

5 0
3 years ago
Have you ever been in the middle of telling a story and had to use hand gestures or even a drawing to make your point? In algebr
blsea [12.9K]
Yes visualizing is good that’s why we do word problems
6 0
2 years ago
Find the slope of the following points
Ierofanga [76]

Answer:

24) -1

25) indefinite/infinite

26) indefinite/infinite

27) 7/3

Step-by-step explanation:

24)

\frac{4-2}{-3+1}\\= 2/-2\\= -1\\

25)

\frac{10+2}{5-5}\\\\= \frac{12}{0}

= indefinite/infinite

26)

indefinite/infinite

27)

\frac{16-9}{11-8}\\\\= \frac{7}{3}\\

<em>Feel free to mark this as brainliest! :D</em>

5 0
2 years ago
Add. Simplify the answer to lowest terms before entering the numerator and denominator in their boxes. 11/16 + 3/16
myrzilka [38]

Answer:

The answer is 7/8.

Step-by-step explanation:

If you add 11/16 to 3/16, you'll get 14/16.  14/16 has two numbers that are divisible by 2,  so when you divide 14/16 by 2 you'll get 7/8 which is 14/16 in a simplified form.  7 is prime and you can't divide it down any more, but 8 i'snt the same way.  The rule is, whatever you do to one side, you have to do to the other.  You can divide 8, but not 7; therefore, you cannot simplify the fraction any further.


5 0
3 years ago
Read 2 more answers
2 to the power of negative 6
Alik [6]

Answer:

0.015625

Step-by-step explanation:

2^-6=0.015625

you can do it on any calculator to check

6 0
3 years ago
Read 2 more answers
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