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lawyer [7]
3 years ago
13

What is the f(5) for the function f(x)=3x+6

Mathematics
2 answers:
o-na [289]3 years ago
3 0

Answer:

21

Step-by-step explanation:

f(x)=3x+6 \\  \\ plug \: x = 5 \\  \\ f(5)=3(5)+6 \\  \\ f(5)=15+6 \\  \\ f(5)=21

liberstina [14]3 years ago
3 0
I think it 21! But I’m not 100%
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The difference between 6 digits smallest number and 4 digits greatest number is <br>​
oee [108]

Answer:

12

Step-by-step explanation:

5 0
2 years ago
I need help please help me!
MaRussiya [10]

Answer:

36ft³

Step-by-step explanation:

Bottom rectangular prism: 2x2x6=24

Top rectangular prism: 2x2x3=12

24+12=36ft³

6 0
3 years ago
Read 2 more answers
A study was conducted to determine if the salaries of elementary school teachers from two neighboring districts were equal. A sa
Semenov [28]

Answer:

H₀: μ₁ - μ₂ = 0

H₁: μ₁ - μ₂ ≠ 0

(–2975, 175)

Do not reject H₀

Step-by-step explanation:

Hello!

The objective of this experiment is to test if the salaries of elementary school teachers are equal in two districts. You can test this trough the population means of the salaries of the teachers if they are either equal or different or directly test if the difference between the salaries of the two districts is cero or not, symbolically: μ₁ - μ₂ = 0

Remember, in the null hypothesis is usually stated the known information, is the "no change" premise and always carries the = symbol.

The hypothesis is:

H₀: μ₁ - μ₂ = 0

H₁: μ₁ - μ₂ ≠ 0

You have two normally distributed variables and you are studying the difference of the means. You can use a pooled Z to make the interval, the formula is:

X[bar]₁-X[bar]₂ ± Z_{1-\alpha /2}*(√(σ₁²/n₁+σ₂²/n₂)

Since the test is two-tailed and at a signification level of 5% I've made the interval at the complementary confidence level of 95% so that I can use it to decide over the hypothesis.

X[bar]₁-X[bar]₂ ± Z_{1-\alpha /2}*(√(σ₁²/n₁+σ₂²/n₂)

Z_{1-\alpha /2} = Z_{0,975} = 1,96

[28900-30300 ± 1.96*(√((2300)²/15+(2100)²/15)]

[-1400 ± 1576,15]

[-2976.15;176,15]

Since I've approximated to two decimal units in the intermediate calculations, the values ​​differ slightly, but the interval is:

(–2975, 175)Now, since the 0 is contained in the Confidence interval, the decision is to not reject the null hypothesis. In other words, the difference in average salaries between the two districts is cero.

I hope it helps!

4 0
3 years ago
What is the following product? ^3 square root 24 times ^3 square root 45
torisob [31]

Answer:

6 \sqrt[3]{5}

Step-by-step explanation:

For the problem, \sqrt[3]{24} *\sqrt[3]{45}, use rules for simplifying cube roots. Under the operations of multiplication and division, if the roots have the same index (here it is 3) you can combine them.

\sqrt[3]{24} *\sqrt[3]{45} = \sqrt[3]{24*45}

You can multiply it out completely, however to simplify after you'll need to pull out perfect cubes. Factor 24 and 45 into any perfect cube factors which multiply to each number. If none are there, then prime factors will do. You can group factors together such as 3*3*3 which is 27 and a perfect cube.

\sqrt[3]{24*45} =\sqrt[3]{3*8*5*3*3}  = 6 \sqrt[3]{5}

7 0
3 years ago
You are gathering data in the store, recording which shirt is tried on the most. The data you gather is... A) bivariate B) categ
borishaifa [10]

Answer:

(D) Quantitative

Step-by-step explanation:

Bivariate data involves two types of variables. Categorical data will have a number of different categories. Continuous data usually includes a range of values so is likely to be in decimals. Quantitative data will be collected in this scenario as it will be calculated the number of times each shirt is tried on.

8 0
3 years ago
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