3 years ago

Evaluate -31-8+31 what’s the answer

Mathematics

2 answers:

kvasek [131]3 years ago

7 0

Answer:

the correct answer is -8

plz mark as brainliest

Step-by-step explanation:

Harrizon [31]3 years ago

3 0

Answer:

i believe that would be -8...

Step-by-step explanation:

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The sample consisted of 50 night students, with a sample mean GPA of 3.02 and a standard deviation of 0.08, and 25 day students,

bulgar [2K]

Answer: The test statistic is t= -0.90.

Step-by-step explanation:

Since we have given that

n₁ = 50

n₂ = 25

$\bar{x_1}=3.02\\\\\bar{x_2}=3.04\\\\\sigma_1=0.08\\\\\sigma_2=0.06$

So, s would be

$s=\sqrt{\dfrac{n_1\sigma_1^2+n_2\sigma_2^2}{n_1+n_2-2}}\\\\s=\sqrt{\dfrac{50\times 0.08^2+25\times 0.06^2}{50+25-2}}\\\\s=0.075$

So, the value of test statistic would be

$t=\dfrac{\bar{x_1}-\bar{x_2}}{s(\dfrac{1}{n_1}+\dfrac{1}{n_2})}\\t=\dfrac{3.02-3.04}{0.074(\dfrac{1}{50}+\dfrac{1}{25})}\\\\t=\dfrac{-0.04}{0.074(0.02+0.04)}\\\\t=\dfrac{-0.04}{0.044}\\\\t=-0.90$

Hence, the test statistic is t= -0.90.

7 0

3 years ago

A triangle has an area of 36 square units. Its height is 9 units.

Black_prince [1.1K]

Well area of a triangle is
$\frac{1}{2} b \times h$
so,
$36 \times 2 = 72 \\ 72 \div 9 = 8$
The answer is 8

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3 years ago

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Rachel is a lunchroom supervisor at west school the children eat lunch at 15 long tables. When all tables used 240 children can

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16 seats at each table

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3 years ago

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The graph of f(x)=3×2 -3 is shown below. g(x) is a transformation of f(x). How would you write the equation for the function g(x

umka2103 [35]

A function assigns the values. The function of the graph g(x) is 3(2ˣ).

<h3>What is a Function?</h3>

A function assigns the value of each element of one set to the other specific element of another set.

Given the function of the graph is f(x)=3(2ˣ)-3, which is needed to be transformed to g(x), since g(x) is the function of f(x) transformed 3 units upwards therefore, the function of g(x) can be written as,

g(x) = f(x) + 3

g(x) = 3(2ˣ)-3+3

g(x) = 3(2ˣ)

Hence, the function of the graph g(x) is 3(2ˣ).

Learn more about Function:

brainly.com/question/5245372

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