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3 years ago

One-third times the difference of a number and 5 is -2/3

Mathematics

1 answer:

fomenos3 years ago

3 0

The answer is 3. 1/3(x-5)= -2/3. Multiply by 3 on both sides. Add five and you get 3

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gregori [183]

Answer:

Step-by-step explanation:

? whats the question

6 0

3 years ago

A certain type of flashlight requires two type-D batteries, and the flashlight will work only if both its batteries have accepta

VikaD [51]

Answer: Our required probability is 0.167.

Step-by-step explanation:

Since we have given that

n = 15

Probability of success p = 80% = 0.8

Probability of failure q = 20% = 0.2

We need to find the probability that at least fourteen will work.

So, by Binomial distribution, we get that

$P(X\geq 14)=P(X=14)+P(X=15)\\\\P(X\geq 14)=^{15}C_{14}(0.8)^{14}(0.2)+^{15}C_{15}(0.8)^{15}\\\\P(X\geq 14)=0.167$

Hence, our required probability is 0.167.

4 0

3 years ago

What is the simplified form?

yarga [219]

Answer:

$\frac{6}{5x^{10}}$

Step-by-step explanation:

Step 1: Simplify square roots

√72 = 6√2

√50 = 5√2

So, $\frac{x^86\sqrt{2} }{x^{18}5\sqrt{2} }$

Step 2: Cancel like terms

$\frac{6}{x^{10}(5)}$

Step 3: Rewrite

And we should get our answer!

7 0

3 years ago

What are different representations of a function?

Soloha48 [4]

Answer:

a function can be represented by a bike

Step-by-step explanation:

a bike has many things that work together to power the bike

the pedals allow the bike to move. the handles allow the bike to move different directions. the wheels allow the bike to move while working withe the pedals and the gears

8 0

3 years ago

in a certain chemical, the ratio if zinc to copper is 3 to 16. a jar of the chemical contains 320 grams of copper. how many gram

Dennis_Churaev [7]

Answer:

60 grams

Step-by-step explanation:

For these type of questions, we can equate the ratio with the actual amounts. We will let the quantity to find be an unknown variable, such as x. Then we equate the ratios, cross multiply, and use algebra to solve.

Let grams of zinc be "x", so we can write the ratios and actual amounts as:

$\frac{3}{16}=\frac{x}{320}$

Then we cross multiply and solve for x, what we want to find out. Shown below:

$\frac{3}{16}=\frac{x}{320}\\16x =3 * 320\\16x = 960\\x = \frac{960}{16}\\x=60$

There are 60 grams of zinc.

5 0

3 years ago