All categories

3 years ago

HELP ME Which One Doesn’t Belong? 7.9x 7.9 (-10) 7.9 + x -79

Mathematics

2 answers:

densk [106]3 years ago

6 0

Answer:

7.9 + x because all the others are equal to.each other

d1i1m1o1n [39]3 years ago

5 0

7.9 + x because the 7.9 would have to have an x factor to be added to another x. the real equation would be 7.9 • x. • representing multiplication

You might be interested in

The 5th term in a geometric sequence is 40. The 7th term is 10. What is (are) the possible value(s) of the 4th term?

Lena [83]

Answer:

possible values of 4th term is 80 & - 80

Step-by-step explanation:

The general term of a geometric series is given by

$a(n)=ar^{n-1}$

Where a(n) is the nth term, r is the common ratio (a term divided by the term before it) and n is the number of term

Given, 5th term is 40, we can write:

$ar^{5-1}=40\\ar^4=40$

Given, 7th term is 10, we can write:

$ar^{7-1}=10\\ar^6=10$

We can solve for a in the first equation as:

$ar^4=40\\a=\frac{40}{r^4}$

Now we can plug this into a of the 2nd equation:

$ar^6=10\\(\frac{40}{r^4})r^6=10\\40r^2=10\\r^2=\frac{10}{40}\\r^2=\frac{1}{4}\\r=+-\sqrt{\frac{1}{4}} \\r=\frac{1}{2},-\frac{1}{2}$

Let's solve for a:

$a=\frac{40}{r^4}\\a=\frac{40}{(\frac{1}{2})^4}\\a=640$

Now, using the general formula of a term, we know that 4th term is:

4th term = ar^3

Plugging in a = 640 and r = 1/2 and -1/2 respectively, we get 2 possible values of 4th term as:

$ar^3\\1.(640)(\frac{1}{2})^3=80\\2.(640)(-\frac{1}{2})^3=-80$

possible values of 4th term is 80 & - 80

3 0

4 years ago

Find the equation to the graph below

Archy [21]

Answer:

Step-by-step explanation:

the formula of the equation is y=mx+n; and if m=1/2 and n=-1 then it's y=1/2x-1

3 0

3 years ago

I will give you 50 if you helped me thanks

Nimfa-mama [501]

Answer:

it's 40!

10 x 10 = 100

10 x 4 = 40

6 x 10 = 60

and 6 x 4 = 24 !!

5 0

3 years ago

Read 2 more answers

On a school trip, the ratio of the teachers to students is 2:21. The ratio boys to girls is 4:3. If there are 18 girls girls on

Alexandra [31]

Answer:

Step-by-step explanation:

Let's say B is the number of boys and T is the number of teachers.

T / (B + 18) = 2/21

B/18 = 4/3

Solve the second equation for B.

B = 24

Plug into the first equation to find T.

T / (24 + 18) = 2/21

T = 4

6 0

3 years ago

Did i do this right?

Sveta_85 [38]

Answer:

a) FALSE

Step-by-step explanation:

a) FALSE (it was translated from quadrant III to quadrant I)

b) TRUE

c) TRUE

d) TRUE

e) FALSE

8 0

4 years ago