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Vladimir79 [104]
3 years ago
10

Twice a number added to four is the same as one subtracted from the number what number is it ?

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
7 0

2n + 4 = 1 - n

n = -1

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Squareroot(y-1) + 3 = y
jek_recluse [69]
Note:xy means x times y and x(y) means the same thing

so
first we get rid of square root then
make the equation equal to zero becaues if
xy=0 then x or/and y=0



squareroot(y-1)+3=y

isolate the squareroot
subtrac 3 from boht sides

squareroot(y-1)=y-3

square both sides (since they are equal, you should be able to square both sides and still make it true)

(squareroot(y-1))^2=(y-3)^2
(y-1)=(y-3)(y-3)
y-1=y^2-6y+9
subtrac y from both sides
-1=y^2-7y+9
add 1 to both sides
0=y^2-7y+10
find what two number multiply to make 10 and add to get -7
the answer is -2 and -5

0=(y-5)(y-2)
therfore
y-5=0
and/or
y-2=0

therefor
y=5 or/and 2 might work
let's try out 2
square root(2-1)+3=2
square root(1)+3=2
1+3=2
false
so 2 doesn't work



let's try 5
squareroot(5-1)+3=5
squareroot(4)+3=5
2+3=5
5=5
true

y=5
7 0
4 years ago
A track team has 24 Students The ratio of females
Alex787 [66]

Answer:

  • There were 10 females and 14 males on the team.

Step-by-step explanation:

<u>Step-1: Add the ratios.</u>

  • 5 + 7 = 12

<u>Step-2: Divide it with the total number of students.</u>

  • 24 ÷ 12
  • => 2

<u>Step-3: Multiply.</u>

  • 5 x 2 = total females

        7 x 2 = total males

  • => 10 females
  • => 14 males

Hence, there were 10 females and 14 males on the team.

6 0
2 years ago
Recall the following study: Over a 17-year period researchers studied a sample of 707 individuals from a single community. They
Nuetrik [128]

Your question is incomplete

I have provided the various variables used in the question and their types

Step-by-step explanation:

The independent/explanatory variable in this question is the number of hours spent watching tv. This variable is what is used to explain the changes that occurs in the dependent variable.

The dependent/response variable is the number of aggressive actions that the individual commits. This is the variable we are interested in. This variable is measured using the independent variable.

The confounding variable is gender. And this variable has an impact on both the dependent and the explanatory variables.

8 0
3 years ago
Please please please please PLEASE answer
Phantasy [73]
I’m pretty sure it’s the 2nd one
8 0
3 years ago
Read 2 more answers
GIVING OUT BRAINLIEST HELP MEE PLSSS
SIZIF [17.4K]

Answer:

15

Step-by-step explanation:

Hope this helps

Please pick me as the  brainest

3 0
3 years ago
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