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
Illusion [34]
3 years ago
11

What is -16+4 (2g-18)=0

Mathematics
2 answers:
UNO [17]3 years ago
8 0

First, we multiply the parentheses by 4: 4x2= 8g, 4x18= 72

-16+8g-72=0

Now, calculate the difference: -16-72 = 16+72= -88

-88+8g=0

Move: -88+8g+88=0+8. And then eliminate the opposites (and the zero) 8g=88.

Divide between eight, so, is equal to g=11

(I'm bad explaining lol)

IgorLugansk [536]3 years ago
5 0

-16 + 4(2g - 18) = 0

Distribute 4 inside the parentheses.

-16 + (8g - 72) = 0

Combine like terms (-16 - 72).

-88 + 8g = 0

Add 88 to both sides.

8g = 88

Divide both sides by 8.

\boxed {g=11}

You might be interested in
a firefighter dives at 7.5 m/sec from window to net. If window is 34 m above net, what speed does firefighter hit net. ACCELRATI
lianna [129]

Answer:

Step-by-step explanation:

This is more physics than math, but since "The book of nature is written in the language of mathematics"...

Anyway, the one-dimesional motion equation you want to use here resembles the quadratic we use to model parabolic motion. It is

v^2=v_0^2+2aΔx

where v is the final velocity of the firefighter, v₀ is the initial velocity of the firefighter, a is -9.8 m/s/s (negative because the motion is in the downward direction), and Δx is -34 m. This is also negative because where the firefighter lands is below the point at which he started. This is important, because if you leave the 34 as positive, you end up with a negative radicand...and that's not gonna work. Filling in the formula:

v^2=(7.5)^2+2(-9.8)(-34)

Paying close attention to significant digits here is important (at least it is when I teach physics in school!). Since there are 2 significant digits in 7.5, we need 2 in the product. 7.5 squared is 56.25 which will round to 56. Then on the right side of the plus sign, we need 2 significant digits as well since the number 2 is part of the equation. We don't count it as significant if it is part of the equation. 2(-9.8)(-34) = 666.4 but that will round to 670. NOW, since the rules for significant digits are different in multiplication and addition, you have to round each first, then take the square root of the sum, rounding at the end. In this case we will round to the place that holds the least significance between the 2 numbers. In our case that is the tens place, since the tens place is less significant than is the 1's place. The number 7 is in the tens place. (Following that rule is super tricky, and also quite maddening!)

What we have here is

v^2=56+670 and

v=\sqrt{56+670}

That leaves us with

v = 26.94438j

But don't forget we round that to the tens place which comes out in the end, finally, to

v = 30 m/s

 

5 0
3 years ago
HELP PLEASE!! &lt;3 <br> A rectangle has vertices (w,v), (w,z), and (z,z). Find the fourth vertex.
Vaselesa [24]

Answer:

Hey, Try practiceing on your own

Step-by-step explanation:

8 0
3 years ago
Dante plans to put 80% of his paycheck into a savings ccount and spend the other 20%. His paycheck this week was $295. About how
Anni [7]
The 20% statement is useless

80% of $295 is what?
80%×295=??
.80 × 295 = $236.00 in savings
7 0
3 years ago
Abc bookstore sells new books, n, for $12, used books, u, for $8, and magazines, m, for $5 each. The store earned $340 revenue l
poizon [28]

Answer:

The number of new books sold  =  10

The number of used books sold (u)   = 15

The number of magazines  sold (m) =   20

Step-by-step explanation:

Let us assume the number of new books  = n

So, the number of used books sold  (u)  = New books sold + 5 =  n + 5

Also, the number of magazines sold (m)  = 2 x ( Number of new books sold)  

= 2 n

⇒  u = n + 5, m = 2 n

Here, the cost of each new book  n-  = $12

So, the cost of n new books = n  x ($12) = 12 n

the cost of each used book  u  = $8

So, the cost of u = (n+ 5)  used  books = n+5  x ($8) = 8 n + 40

the cost of each magazine  m  = $5

So, the cost of m = (2n )  magazines = 2n  x ($5) = 10 n

Also, total earnings = $340

⇒ 12 n + 8n +40 + 10 n = 340

or,  30 n =  300

or,n = 300/30 = 10

Hence the number of new books sold  = n = 10

The number of used books sold (u)  = n + 5  = 15

The number of magazines  sold  = m = 2 n = 20

4 0
3 years ago
In details<br> Don't spam
Scrat [10]

Answer:

a = -4.

Step-by-step explanation:

25(√5)^a * (√5) ^3  = 5√5

25*5^a/2 * 5^3/2 = 5*5^1/2

25*5^a/2  = 5*5^1/2 / 5^3/2

25*5^a/2  = 5^1 *5^1/2 / 5^3/2

25*5^a/2 = 5^3/2 / 5^3/2 = 1

5^a/2 =  1/25 = 5^-2

The bases are equal, so

a/2 = -2

a = -4.

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the lcm of 8,12,3
    6·1 answer
  • What is the distance between 0,0 and 5, -2
    9·1 answer
  • A 12% discount on a tent saved melanie $75 what was the original price
    14·1 answer
  • Find MO and PR <br> .......................
    7·1 answer
  • You have to catch the bus at 11:15am for a movie! It
    15·2 answers
  • please help me, i don’t understand this. i’ve been trying and i can’t afford to get anything wrong rn! :/
    6·2 answers
  • Use the Theorem of Pythagoras twice to calculate the lengths marked x. Give your answers accurate to 4sf.                       
    12·1 answer
  • Nicole earned a total of $6 by selling 2 cups of lemonade. After selling a total of 24 cups of lemonade, how much money will Nic
    9·1 answer
  • AHHHHHHHHHHHHHHHHHHHHHHHHHH
    8·1 answer
  • Pleaseee HELPPP will mark Brainly
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!