All categories

3 years ago

What is the value of z? 53=−19z+5+7z

Mathematics

2 answers:

igor_vitrenko [27]3 years ago

5 0

Answer:

z=-4

Step-by-step explanation:

$53=-19z+5+7z$

To solve for z, we need to get z alone

First we combine like terms

-19z +7z is -12z

$53=-19z+5+7z$

$53=-12z+5$

Subtract 5 from both sides in order to eliminate 5

$48=-12z$

Divide both sides by -12 in order to eliminate -12

z= -4

The value of z is -4

UkoKoshka [18]3 years ago

3 0

Answer:

-4

Step-by-step explanation:

53 = -19z+5+7z

53 = -12z+5 | -5 (on both sides)

48 = -12z | :(-12)

z = -4

You might be interested in

Math question.

Oduvanchick [21]

Answer:

C) 25%

Step-by-step explanation:

let salt be 's'

let water be 'w'

$\frac{s+1}{w+s+1} = 33\frac{1}{3} \\\\\frac{s+1}{w+s+1} = \frac{1}{3} \\\\\frac{w + s + 1}{3} = s+1\\\\3s +3 = w+s+1\\w = 2s+2\\\\\frac{s+1}{w+1+s+1} = \frac{3}{10} \\\\\frac{3(w+s+2)}{10} = s+1\\\\3w+3s+6 = 10s+10\\**w = 2s+2\\3(2s+2) + 3s + 6 = 10s+10\\\\6s+6+3s+6 = 10s+10\\9s+12 = 10s+10\\-s = -2\\s = 2\\\\w= 2s+2\\w=2*2+2\\w = 6\\\\\frac{2}{2+6} = \frac{2}{8} = 0.25$

0.25 = 25%

7 0

2 years ago

I need help with this bc i dont understand it can somebody help me plzzzzz i'll give you 40 points for it!!!! And name you brain

kkurt [141]

Answer:

8.79 in

Step-by-step explanation:

23 = 150/360 × 2×3.14× r

23 = 5/12 × 6.28 x r

23 = 31.4×r / 12

31.4 r = 23×12

31.4 r = 276

r = 276/31.4

r = 8.79 in

6 0

3 years ago

What is the expression to 50 times the sum of 64 and 36

Fantom [35]

Answer:

50(64+36) this would be your answer

6 0

3 years ago

Read 2 more answers

Each week, Mr. Jones goes to the grocery store. Mr. Jones estimates that he will spend $120 when he goes this week. When he goes

34kurt

The formula for percent error is the absolute vale of: theoretical-experimental and the result of that divided by the theoretical so it is 120-94=26 and divide that by 120 and it is .216 so round up to .22 and then multiply by 100 which is 22 so 22%

(I think)

7 0

3 years ago

HELP PLZ

Sedbober [7]

The answer is a.............

5 0

3 years ago