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
Maslowich
3 years ago
11

Please help me with this problem. I am not sure if I am correct.

Mathematics
1 answer:
jek_recluse [69]3 years ago
3 0

Answer:

only -7

Step-by-step explanation:

Just plug them in.

so for x=-7 \sqrt{-2(-7)-5}=(-7)+4\\\sqrt{9}=-3 \\ 3=-3So this one is extraneous

Then if you plug -3 in you get 1 = 1 so this one is not extraneous.  if you need me to work this one out let me know.  

You might be interested in
Help pls!! math.. PLS HELPPP
AURORKA [14]

Answer:a

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
In a nursery class of 18 pupils, the average is
melamori03 [73]

Answer:

The sum of the age of pupils is 81

Step-by-step explanation:

Let sum of age of 18pupils = x

Average ages = 4.5

Average = total/no. of pupil

4.5 = x/18

x = 81

8 0
3 years ago
Read 2 more answers
In ∆abc, m∠cab = 2x and m∠​acb = x + 30. if line segment a b is extended through point b to point d, m∠​cbd = 5x − 50. what is t
Allisa [31]
The answer is option "3, 40".

<span>m∠cab = 2x
m∠​acb = x + 30
m∠​cbd = 5x − 50
Now,
</span>m∠cab + m∠​acb = m∠​cbd 
2x+x+30 = 5x-50
2x+x-5x = -50-30
-2x = -80
x = 40


7 0
3 years ago
Six times blank equals what
miskamm [114]

Answer: 6 x 8=48

Step-by-step explanation:

3 0
3 years ago
For the past 40 days, Naomi has been recording the number of customers at her restaurant between 10 am and 11 am. During that ho
Ugo [173]
A is 25/40 and b is 15/40
6 0
3 years ago
Other questions:
  • Need help one step equations multiplication and Division
    9·1 answer
  • Write an equation for the translation of x^2+y^2=25 by 7 units left and 2 units down
    12·1 answer
  • What is the Fraction of the items are round
    5·2 answers
  • 4. People in Japan on average eat 3 ounces of fish per day. How many pounds of fish is this per week?
    7·1 answer
  • 27x^3−64divided by3x−4
    14·2 answers
  • Olivia and her three siblings bring a sack lunch to school each day, consisting of a bagel, an apple, a cookie, and a juice box.
    12·2 answers
  • Can someone explain this.
    13·1 answer
  • Jackie’s test scores for the first semester are listed below.
    5·1 answer
  • The perimeter of a rectangle is 34 units. It’s width is 6.5 units
    13·2 answers
  • A grocery clerk made this graph to relate the number of pounds of peaches and plums to the cost.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!