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2 years ago

My math grade went from a 78 to a 86. What is the percent increase

Mathematics

1 answer:

katen-ka-za [31]2 years ago

7 0

Answer:

10.25641...% or 10.3%

Step-by-step explanation:

(86/78)/78 = 8/78

8/78 * 100 = 400/39 = 10.25641...%

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Any 1+1 how much tell

Alinara [238K]

Answer:

2 or maybe 11 lol

thank you for the points

;-).......

8 0

3 years ago

Read 2 more answers

Solve the inequality. |5 - 2x|> 14

lord [1]

Answer:

x < −9/2

x > 19/2

I hope this helps <333

8 0

3 years ago

In a certain city, there are about one million eligible voters. A simple random sample of size 10,000 was chosen to study the re

Ronch [10]

Answer:

REQUIRED TEST STATICS IS 35.19

Step-by-step explanation:

total size of sample = 10,000

men women

voted 2777 3466

did not vote 1444 2313

By chi square test we can find the relationship between gender and participation in the election

$X^2 = \frac{ N(ad-bc)^2}{(a+c)(b+d)+(a+b)(c+d)}$

where

a represent = 2777, b = 3466, c= 1444, d = 2313, N = 10000

Putting values to get chis square statics

$X^2 = \frac{ 10000(2777*2313-3466*1444)^2}{(2777+1444)(3466+2313)+(2777+3466)(1444+2313)}$

$X^2 = = 35.159$

HENCE REQUIRED TEST STATICS IS 35.19

3 0

3 years ago

Can someone help me?

Natasha2012 [34]

Answer:

The symbols that we will use are:

a > b (a is larger than b)

a < b (a is smaller than b)

a ≥ b (a is larger than or equal to b)

a ≤ b (a is smaller than or equal to b).

1) if x represents the inches of snow, we have:

"More than 4 inches" means that x must be strictly larger than 4 inches, this can be written as:

x > 4 inches.

2) "less than 25 inches" means that x must be strictly smaller than 25 inches, this can be written as:

x < 25 inches.

3) If T represents the temperature

"No more than 8°F" means that the temperature can be smaller than 8°F, or equal to 8°F, then we can write this situation with:

T ≤ 8°F

4) "At least 7°F" means that the temperature can be 7°F or more than that, then we can write this situation as:

T ≥ 7°F

3 0

3 years ago

You plant a spruce tree that grows 4 inches per year and a hemlock tree that grows _____ inches per year. The initial heights ar

UNO [17]

Complete Question:

You plant an 8-inch spruce tree that grows 4 inches per year and a 14-inch hemlock tree that grows 6 inches per year.

The initial heights are shown.

Write a system of linear equations that represents this situation.

Answer:

$s(x) = 8 + 4x$

$h(x) = 14 + 6x$

Step-by-step explanation:

Given

Spruce Tree (s):

$Initial\ Height = 8$

$Growth = 4$ (yearly)

Hemlock Tree (h):

$Initial\ Height = 14$

$Growth = 6$ (yearly)

Required

Represent as system of linear equations

Let the number of years be x.

In both cases, the equation can be formed using:

$Equation = Initial\ Height + Growth * x$

For Spruce Tree (s):

$s(x) = 8 + 4 * x$

$s(x) = 8 + 4x$

For Hemlock Tree (h):

$h(x) = 14 + 6 * x$

$h(x) = 14 + 6x$

Hence, the equations are $s(x) = 8 + 4x$ and $h(x) = 14 + 6x$

3 0

3 years ago