All categories

3 years ago

Solve 3x + 4x = 2. +

Mathematics

1 answer:

yan [13]3 years ago

4 0

Answer: $\frac{-2+\sqrt{10}}{3}$

Step-by-step explanation:

You might be interested in

Given sin θ = 7/25, find the value of a and b in the following statements.

Sergeu [11.5K]

Answer:

a = 7, b = 24 if quadrant 1

a = -7, b = -24 if quadrant 2

Step-by-step explanation:

Tan theta = sin(theta) × sec(theta)

a/24 = (7/25) × (25/b)

ab = 168

a = 168/b

1 + tan²(theta) = sec²(theta)

1 + a²/576 = 625/b²

1 + 168²/576b² = 625/b²

1 = 576/b²

b = 24 (+ or -)

a = 168/24 = 7 (+ or -)

3 0

3 years ago

Read 2 more answers

What is the limit of [(x+2) /(x+1)] ^x as x approaches to infinity?

Lesechka [4]

first thing we need to do is factorise because we can't calculate infinity/infinity

and we are left with 1^infinity this is an euler function

an euler function looks like this

6 0

2 years ago

Hey I need help fast it's due tomorrow

adelina 88 [10]

Is that even possible

5 0

3 years ago

Keri has $30.67. She goes to Target and buys a pack of pencils for $2.38 and an eraser for 56 cents. How much money did Keri spe

AlekseyPX

Answer:

Keri spent $2.94 and Keri now has $27.73.

Step-by-step explanation:

$2.38+$0.56= $2.94

$30.67-$2.94=$27.73

6 0

3 years ago

A real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found tha

egoroff_w [7]

Answer:

Between 21 years and 75 years

Step-by-step explanation:

Given that a real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found that the mean age was 48 years old, with a standard deviation of 9 years.

X the ages of home buyers is N(48, 9)

a) $30\leq x\leq 66\\|x-48|\leq 18\\|x-48|\leq 2\sigma$

Hence using Cheby chev inequality

$P(|x-48|\leq 2\sigma)\geq 1-\frac{1}{2^2} \\=0.75$

b) $25.5\leq x\leq 70.5\\|x-48|\leq 22.5\\|x-48|\leq 1.5\sigma$

$P(|x-48|\leq 1.5\sigma)\geq 1-\frac{1}{1.5^2} \\=0.556$

c) Using normal distribution we have

$P(|x-48|\leq 2\sigma)=0.95$

d) z value is 2.97

Hence x lies between

$(48-9*2.97, 49+9*2.97)\\=(21.27,74.73)$

Between 21 years and 75 years

4 0

3 years ago