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2 years ago

Please help me. please please please

Mathematics

1 answer:

Anastasy [175]2 years ago

8 0

Answer:

$\frac{27}{8}$

Step-by-step explanation:

$\left(\frac{16}{81}\right)^{\frac{-3}{4}}=\frac{16^{\frac{-3}{4}}}{81^{\frac{-3}{4}}}$

$=\frac{2^{-3} }{3^{-3} }$

$=\frac{\frac{1}{8}}{\frac{1}{27}}$

$=\frac{1*27}{8*1}$

$=\frac{27}{8}$

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A survey of a group of seventh graders and a group of teachers at a local middle school asked how many siblings they each have.

wolverine [178]

Answer:

The closest statement is B. The median for the students is 2 and the median for the teachers is 3.

Step-by-step explanation:

1. Let's review the information provided to us to answer the question correctly:

Number of students = 20

Siblings 0 1 2 3 4 5 6 7 8 9

Students 2 4 7 5 2 0 0 0 0 0

Number of teachers = 20

Siblings 0 1 2 3 4 5 6 7 8 9

Teachers 1 3 2 4 5 3 1 0 1 0

2. Which statement compares the medians of the data?

Let's recall that the median of a set of data (students or teachers) is the middlemost number in the set. The median is also the number that is halfway into the set. To find the median, the data should be arranged in order from least to greatest. If there is an even number of items in the data set, then the median is found by taking the mean (average) of the two middlemost numbers, the 10th and 11th values from left to right for the students and teachers.

Upon saying that, let's meet the median of the data sets provided:

Median for the students = 10th and 11th values/2

Median for the students = (2 + 2)/2 = 2

Median for the teachers = 10th and 11th values/2

Median for the teachers = (3 +4)/2 = 3.5

The closest statement is B. The median for the students is 2 and the median for the teachers is 3.

4 0

3 years ago

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Find three points of the linear equation -x-2y=-10

n200080 [17]

We can find 3 points by plugging them in

x = -12 y = 1
x = 10 y = 0
x = 0 y = 5

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3 years ago

21=3(y+3) which value of y is the solution to the equation?

Neporo4naja [7]

Y=4 pls brainliest me thanks

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2 years ago

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2 inches is equal to 300 miles if you drive 450 miles how many inches does it represent on the map

Lunna [17]

Answer:

300 / 2 = 450 / x

x = 900 / 300

x = 3 inches

Step-by-step explanation:

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2 years ago

The height to the base of an isosceles triangle is 12.4m, and its base is 40.6m. What are the measurement of the angles of the t

Vsevolod [243]

Answer:

angles: 31.42°, 31.42°, 117.16°
legs: 23.79 m

Step-by-step explanation:

The base angles can be found from the definition of the tangent function:

tan(base angle) = height/(half-base length)

base angle = arctan(12.4/20.3) ≈ 31.418°

Then the apex angle is double the complement of this:

apex angle = 2(90° -31.418°) ≈ 117.164°

The base angles are 31.42°, and the apex angle is 117.16°.

The leg lengths can be computed from the Pythagorean theorem applied to the altitude and the half-base length.

leg length = √(12.4² +20.3²) = √565.85 ≈ 23.789 . . . . meters

The length of the legs is about 23.79 m.

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3 years ago

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Please help me. please please please​

Please help me. please please please