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rusak2 [61]
3 years ago
5

Ming wrote the table of points below.

Mathematics
1 answer:
borishaifa [10]3 years ago
6 0

Answer:

I am 99.99% sure it is the first one

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I don’t understand this.
alexira [117]
I’ll solve number 3.

You need to group the like terms. For example, -4n + 6n = 2n

8=2n

Now, we need to keep n by itself.
2n/2 = n

Whatever you do to one side, you need to do to the other.

8/2 = 4

So, in conclusion, n = 4.

I hope this helps for you to solve the rest!
8 0
3 years ago
3. Four chicken nuggets have 180 calories. How many calories are in 9 chicken
Lemur [1.5K]

Hey there! :)

Answer:

405 calories.

Step-by-step explanation:

To solve, we can create a proportion.

We are given that 4 nuggets is equivalent to 180 calories, therefore:

\frac{180cal}{4}= \frac{xcal}{9}

Cross multiply:

9 · 180 = 4 · x

1620 = 4x

Divide both sides by 4:

x = 405 calories.

8 0
3 years ago
Read 2 more answers
Y-3=2(x+1)<br> Missing values?
klio [65]
The missing value for y is 3
Step-by-step explanation:
y−3=2(x+1)
We know that x=-1 and we want to solve for y
Put in x=-1
y-3 = 2(-1+1)
y-3 = 2(0)
y-3=0
Add 3 to each side
y-3+3 = 0+3
y =3
3 0
3 years ago
A research firm conducted a survey of 49 randomly selected Americans to determine the mean amount spent on coffee during a week.
Andre45 [30]

Answer:

(21.4, 18.6)

Step-by-step explanation:

Given that:

Mean (μ) = $20 per week

Standard deviation (σ) = $5

number of sample (n) = 49

Confidence level = 95% = 0.95

α = 1 - 0.95 = 0.05

\frac{\alpha }{2}=\frac{0.05}{2} = 0.025\\  z_{\frac{\alpha }{2} }=z_{0.025}= 1.96  from the probability table.

The margin of error (e) = z_{\frac{\alpha}{2} *\frac{\sigma}{\sqrt{n} } = 1.96*\frac{5}{\sqrt{49} } =1.4

Confidence interval = μ ± e = (μ + e, μ - e) = (20 + 1.4, 20 - 1.4) = (21.4, 18.6)

3 0
3 years ago
Which of the following is an equivalent expression to the expression a1/3 / a1/4
Mashcka [7]

Answer:

Option A :- \sf {a}^{\frac{1}{12}}

Step-by-step explanation:

\hookrightarrow \sf \:  \frac{ {a}^{ \frac{1}{3} } }{ {a}^{ \frac{1}{4} } }

Simplify the expression

\hookrightarrow \sf \:  {a}^{ \frac{1}{3} -  \frac{1}{4}  }

Transform the Expression

\hookrightarrow \sf \:  {a}^{ \frac{4 - 3}{12}  }

Calculate

\hookrightarrow \sf {a}^{\frac{1}{12}}

3 0
2 years ago
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