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ira [324]
4 years ago
10

Please help, last two questions.

Mathematics
1 answer:
Novay_Z [31]4 years ago
5 0
First problem.
The function is f(x) = 3^x.
The base, b, is 3 since 3 is raised to power x.
The question is what value of x used in 3^x makes the expression 3^x equal to 3?
Look at the graph, and find the point that has y-value 3.
Which x-value does that point have?
The point is (1, 3), and the x-value is 1.

Second question.
The question is similar to the question above using a different exponential function.
(1/4)^1 = 1/4, so the answer is x = 1
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Vaselesa [24]
The answer is B. Use the trig identity (sin x)^2+(cos x)^2=1. Since cos x=0.3090, sinx=+-\sqrt(1^2-0.3090^2)=+-0.9511. Since 0<x<90, sin x must be positive, so sin x=0.9511. tan x=sin x/cos x=0.9511/0.3090=3.0780.
5 0
3 years ago
Eleven more than five times a number is equal to the difference between −38 and twice the number. Find the number.
Phantasy [73]

Answer:

x = -7

Step-by-step explanation:

Eleven more than five times a number is equal to the difference between −38 and twice the number.

let x represent the number.

11 + 5x = -38 - 2x

7x +11 = -38.............add 2x to both sides

7x = -49................... subtract 11 from both sides

x = -7........................divide both sides by 7

4 0
3 years ago
Company a pays $23,000 yearly with raises of $1200 per year. company b pays $26,000 yearly with raises of $800 per year. which c
RSB [31]
Company A: 23,000+(1,200x9)=33,800
Company B: 26,000+(800x9)=33,200
So, Company A pays $600 more than company B in year 10
7 0
3 years ago
Which statement BEST describes how to find the distance between -5 and 15?
sashaice [31]

Answer:

D) Subtract -5 from 15, then find the absolute value

Step-by-step explanation:

5 0
3 years ago
One day less than 3 weeks?
max2010maxim [7]

Answer:

20 Days

Explanation:

21 Days = 3 Weeks

Minus 1, that is 20 days.

6 0
3 years ago
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