All categories

3 years ago

Show me how to work the equation 30-f+8f=30

Mathematics

2 answers:

noname [10]3 years ago

8 0

Answer:

f=0

Step-by-step explanation:

30-f+8f=30

30+7f=30 (combine like terms, in this case -f stands for -1 so (-1+8=7) )

7f=0 (divide by 7)

f=0 (any number divided by 0 is 0)

ELEN [110]3 years ago

4 0

30-f+8f=30

30+7f=30

Move +30 to the right side. Sign changes from +30 to -30.

30-30+7f=30-30

7f=0

Divde by 7

7f/7=0/7

Cross out 7 and 7, divide by 7. Becomes 1*1*f=f

f=0

Answer: f=0

You might be interested in

HURRY !! which comparison of the two equations is accurate? (picture)

VladimirAG [237]

Answer:

its c .Both equations have the same potential solutions, but equation A might have extraneous solutions.

Step-by-step explanation:

just took the test

7 0

3 years ago

Read 2 more answers

One of your friends is testing the effect of drinking coffee on the duration of cold symptoms. The common cold lasts, on average

Goshia [24]

Answer: 0.0930

Step-by-step explanation:

As per given , we have

H0: μcoffee = 6

Ha: μcoffee < 6

She finds z = −1.68 with one-sided P-value P = 0.0465.

The P-value for two-tailed test is calculated by :

$2P(Z>|z|)$

For z= -1.68 , we have

$2P(Z>|-1.68|)=2P(Z>1.68)$

$=2(1-P(z\leq1.68))\ \ [\because\ P(Z>z)=1-P(Z\leq z)]$

$=2(1-0.9535213)\ \ \ [\text{ NORM.S.DIST(z, TRUE}]\\\\=2( 0.0464787)=0.0929573\approx0.0930$

Hence, the correct two-sided P-value for z = −1.68 is 0.0930 .

3 0

3 years ago

Exmpales of monomails

Afina-wow [57]

5r+3
2x-6
X4+10
There u go hun.

4 0

3 years ago

Read 2 more answers

A right rectangular prism has these dimensions: Length − Fraction 1 and 1 over 4 units Width − Fraction 5 over 8 unit Height − F

Sav [38]

Volume of rectangular prism = 1 1/3 x 5/6 x 2/3 = 4/3 x 5/6 x 2/3 = 20/27

Volume of cube = 1/6 x 1/6 x 1/6 = 1/216

Number of cubes that will pack the rectangular prism = 20/27 / 1/216 = 160

5 0

3 years ago

Read 2 more answers

P(-2) = 1P(-1) =3 P(1) = 0 P(2) = 4

ratelena [41]

p(-1) p(-2) p(1) p(6)= 4

8 0

3 years ago

Show me how to work the equation 30-f+8f=30​

Show me how to work the equation 30-f+8f=30