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3 years ago

The inverses operation of add 28

Mathematics

1 answer:

Marta_Voda [28]3 years ago

5 0

Subtract 28 .. the inverse of adding is subtracting

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Someone knows this one? help me please help help :(<br>thank you so much

noname [10]

Answer: d

<u>Step-by-step explanation:</u>

$KE=\dfrac{1}{2}mv^2\\\\\\\bigg(\dfrac{2}{m}\bigg)KE=\bigg(\dfrac{2}{m}\bigg)\dfrac{1}{2}mv^2\\\\\\\bigg(\dfrac{2}{m}\bigg)KE=v^2\\\\\\\sqrt{\bigg(\dfrac{2}{m}\bigg)KE}=\sqrt{v^2}\\\\\\\sqrt{\bigg(\dfrac{2}{m}\bigg)KE}=v$

5 0

3 years ago

10,120,860 in Expanded Notation

zhenek [66]

Answer: 10,000,000 + 100,000 + 20,000 + 800 + 60 = 10,120,860

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

How would you answer this?: z^3/z^9

fiasKO [112]

Hello !

Answer:

$z {}^{ - 6}$

Step-by-step explanation:

$\frac{z {}^{3} }{z {}^{9} } = z {}^{3 - 9} = z {}^{ - 6}$

8 0

2 years ago

A solution for direct IV bolus injection contains 125 mg of drug in each 25 mL of injection. What is the concentration of drug i

Burka [1]

Answer:

The concentration of the drug is 5ug/uL

Step-by-step explanation:

The first step of the problem is the conversion of the quantities of the drug in mg and mL to ug and uL.

In a rule of three problem, the first step is identifying the measures and how they are related, if their relationship is direct of inverse.

When the relationship between the measures is direct, as the value of one measure increases, the value of the other measure is going to increase too.

When the relationship between the measures is inverse, as the value of one measure increases, the value of the other measure will decrease.

Unit conversion problems, like this one, is an example of a direct relationship between measures.

First step: Conversion of 125mg to ug

Each mg has 1,000ug. So:

1mg - 1,000ug

125mg - xug

x = 1,000*125

x = 125,000 ug

Second step: Conversion of 25 mL to uL

Each mL has 1,000uL. So:

1mL - 1,000uL

25mL - x uL

x = 25*1,000

x = 25,000uL

Concentration:

$C = \frac{125,000 ug}{25,000uL} = 5ug/uL$

The concentration of the drug is 5ug/uL

3 0

4 years ago

HELP PLEASE!!!!! Solve each system.

Ede4ka [16]

$15.\ \text{Elimination method}\\\underline{+\left\{\begin{array}{ccc}y=-3x+9\\y=3x+3\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad2y=12\qquad\text{divide both sides by 2}\\.\qquad \boxed{y=6}\\\\\text{put the value of y to the second equation}\\\\6=3x+3\qquad\text{subtract 3 from both sides}\\3=3x\qquad\text{divide both sides by 3}\\1=x\to\boxed{x=1}\\\\Answer:\ x=1,\ y=6\to(1,\ 6)$

$16.\ \text{Substitution method}\\\left\{\begin{array}{ccc}y=11x+4\\y=7x-16\end{array}\right\Rightarrow11x+4=7x-16\\\\11x+4=7x-16\qquad\text{subtract 4 from both sides}\\11x=7x-20\qquad\text{subtract 7x from both sides}\\4x=-20\qquad\text{divide both sides by 4}\\\boxed{x=-5}\\\\\text{Put the value of x to the first equation}\\\\y=11(-5)+4\\y=-55+4\\\boxed{y=-51}\\\\Answer:\ x=-5,\ y=-51\to(-5,\ -51)$

7 0

4 years ago

Read 2 more answers