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pochemuha
3 years ago
12

Maya is the manager for the track team. She created a table to compare finish times from the second practice to the first

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
4 0

Answer:

Runners that decrease times are not improving

Step-by-step explanation:

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PLS HELP DUE VERY SOON
Ganezh [65]

Answer:

a. IQR = 2.25

b. 40%

(I'm not sure about B.)

Step-by-step explanation:

a.=Q3 - Q1

=4.7 - 2.2

=2.5

b. =2/5 × 100/1

=40%

3 0
3 years ago
Today the entire school 250 students went to the soap box derby the math club went in 2 vans and each van held 6 students how ma
const2013 [10]

Answer:

12 students from math club

Step-by-step explanation:

Number of vans = 2

Number of students in each van = 6

Number of students who went from math club to the soap box = ?

You can apply the following expression:

Total  number of students=Number of students per van * Number of vans

Total  number of students= 6 *2

= 12 students from math club....

3 0
3 years ago
Find the length of the shorter leg of a right triangle with the longer leg is 9 feet more than the shorter leg the hypotenuse is
Jobisdone [24]

Answer:

Length of Shorter leg = 27 feet

Length of Longer leg = 36 feet

Length of Hypotenuse = 45 feet

Step-by-step explanation:

Given:

Let,

    Length of Shorter leg = x,

According to the given condition we have

∴  Length of Longer leg = x + 9 feet

∴  Length of Hypotenuse = 2x - 9 feet

To Find:

Length of Shorter leg = ?

Solution:

Now In Right Angle Triangle, By Pythagoras theorem we have

(\textrm{Hypotenuse})^{2} = (\textrm{Shorter leg})^{2}+(\textrm{Longer leg})^{2}

substituting the given values we get

(2x-9)^{2} = (x)^{2}+(x+9)^{2}\\

By using Identity (A ± B)² = A² ± 2AB +B²  we get

4x^{2} -36x+81=x^{2} +(x^{2} +18x+81)\\\\4x^{2} -2x^{2} -36x-18x=81-81\\\\2x^{2} -54x=0\\2x(x-27)=0\\2x=0 or x-27=0\\\therefore x\ cannot\ be \ zero\\\therefore x = 27 \feet

Substituting x=27 we get

∴  Length of Longer leg = x + 9 =27 +9 = 36 feet

∴  Length of Hypotenuse = 2x - 9 = 2×27 -9 = 45 feet

7 0
3 years ago
A mathematical phrase represented by numbers, variables, and operations is a(n)
Andre45 [30]

Answer:

Expression

Step-by-step explanation:

Expressions use numbers, variables, and operations to form a mathematical calculation.

Equations are similar except they use equal signs, so that makes them different than expressions.

If this answer is correct, please make me Brainliest!

7 0
3 years ago
7 is 28% of what number
zvonat [6]
25 hope it helps have a great day :)
7 0
3 years ago
Read 2 more answers
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