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2 years ago

Select the correct answer from the drop-down menu

Mathematics

1 answer:

Sidana [21]2 years ago

6 0

C is the answer bc its (5)^2-10(5)+25 so then it is 25-50+25 which = 0

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Jim has received scores of 72 72 and 77 77 on his first two 100 point tests. what score must he get on his third 100 point test

Alisiya [41]

77+72=149
149/2=74.5
through the process of elimination, I found that Jim needs to get an 88 or higher to receive an average of 79 or greater.

77+72+88=237
237/3=79

7 0

3 years ago

The absolute value of -1/4

Goryan [66]

Answer:

1/4

Step-by-step explanation:

absolute value are always positive

7 0

3 years ago

HElP !!!!!!!!!!!’nnnnnnnnnnn

Darina [25.2K]

Answer:

x = 1

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Equality Properties

Algebra II

Logarithms
Solving Exponentials

Step-by-step explanation:

Step 1: Define

$\displaystyle 2^{x+4} - 12 = 20$

Step 2: Solve for x

Isolate x term: $\displaystyle 2^{x+4} = 32$
Rewrite 32: $\displaystyle log_2(32) = 5$
Rewrite equation: $\displaystyle 2^{x+4} = 2^5$
Set equal: $\displaystyle x + 4 = 5$
Isolate x: $\displaystyle x = 1$

4 0

3 years ago

Read 2 more answers

A consumer activist group wants to determine the mean lifetime of the Amazon Kindle DX. The consumer activist groups randomly se

BartSMP [9]

Answer:

Confidence interval for the population mean lifetime of the Amazon Kindle DX is (33.30 months to 42.70 months)

Step-by-step explanation:

Given;

Mean lifespan x = 38 months

Standard deviation r = 12 months

Number of kindle selected n = 25

Confidence range = 95%

Z*(95%) = 1.96

Confidence interval = x+/-Z*(r/√n)

= 38 +/- 1.96(12/√25)

= 38 +/- 4.70

Confidence interval = (33.30 months to 42.70 months)

6 0

3 years ago

Reflect the point A(-2,1) over the line x = 1. What is the location of A'

Sonbull [250]

Answer: A(2,-1)

Step-by-step explanation:reflect means opposite sides so that means yu turn it around to make your new number !

7 0

3 years ago