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3 years ago

Please help i’ll give brainliest!!! thanks

Mathematics

2 answers:

Brut [27]3 years ago

7 0

I think school is designed to help poor because it’s for free

dalvyx [7]3 years ago

3 0

Answer:

Tang instituted government - funded social programs , which were designed to help the poor .

hope it is helpful to you.

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What is the domain of the graph below?

dimaraw [331]

Answer:

Step-by-step explanation:

idk how to explain it but im sorry if i tell u the wrong answer

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3 years ago

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5#The distribution of scores on a standardized aptitude test is approximately normal with a mean of 480 and a standard deviation

kirza4 [7]

We want to find the value that makes

$P(X\ge x)=0.2$

To find it we must look at the standard normal table, using the complementary cumulative table we find that

$P(Z\ge z)=0.20045\Leftrightarrow z=0.84$

Then, using the z-score we can find the minimum score needed, remember that

$z=\frac{x-\mu}{\sigma}$

Where

σ = standard deviation

μ = mean

And in our example, x = minimum score needed, therefore

$\begin{gathered} 0.84=\frac{x-480}{105} \\ \\ x=0.84\cdot105+480 \\ \\ x=568.2 \end{gathered}$

Rounding to the nearest integer the minimum score needed is 568, if you get 568 you are at the top 20.1%.

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1 year ago

27n⁵+75n³ (Factor completely)

dimaraw [331]

Answer:

3n^2 (9+25n)

Step-by-step explanation:

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3 years ago

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The water level in a lake was monitored and was noted to have changed -2 1/3 inches in one year. The next year it was noted to h

Diano4ka-milaya [45]

Answer:

The total change in water level over the past 2 years is $\displaystyle -4 \frac{1}{6}$ .

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Fractions

Proper and Improper

Numbers

Least Common Multiple (LCM)

Step-by-step explanation:

Step 1: Define

Identify

Year 1 water change: $\displaystyle -2 \frac{1}{3}$

Year 2 water change: $\displaystyle -1 \frac{5}{6}$

Step 2: Find Total Water Change

[Set up] Add yearly water changes: $\displaystyle -2 \frac{1}{3} + -1 \frac{5}{6}$
[Fractions] Convert to improper: $\displaystyle \frac{-7}{3} - \frac{11}{6}$
[Fraction] Rewrite [LCM]: $\displaystyle \frac{-14}{6} - \frac{11}{6}$
[Order of Operations] Subtract: $\displaystyle \frac{-25}{6}$
[Fraction] Convert to proper: $\displaystyle -4 \frac{1}{6}$

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3 years ago

a shipping company delivered 38728 letters and 41584 packages. write and solve an equation to find how many items the company de

kolbaska11 [484]

38,728 + 41,584 = 80,312

The company delivered 80,312 items.

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3 years ago