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3 years ago

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Mathematics

1 answer:

ioda3 years ago

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Answer:

Step-by-step explanation:

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What is 2x-3=15 i need help

Bingel [31]

Answer:

x = 9

Step-by-step explanation:

2x - 3 = 15

2x = 15 + 3

2x = 18 (divide both sides by 2 to get x)

2x/2 = 18/2

x = 9

3 0

3 years ago

Read 2 more answers

For each sentence below, find the value of x that makes each sentence true.

vitfil [10]

ANSWER

1. $x=\frac{1}{2}$

2. $x=1$

QUESTION 1

The first sentence is $(5^{\frac{1}{5}})^5=25^x$ .

Recall that;

$(a^m)^n=a^{mn}$

We simplify the left hand side by applying this property to get;

$5^{\frac{1}{5}\times 5}=25^x$ .

$\Rightarrow 5^{1}=25^x$ .

We now rewrite the right hand side too in an index form to obtain;

$\Rightarrow 5^{1}=5^{2x}$

We now equate the exponents to get;

$\Rightarrow 1=2x$ .

$\Rightarrow \frac{1}{2}=x$

$\Rightarrow x=\frac{1}{2}$ .

QUESTION 2

The second sentence is $(8^{\frac{1}{3}})^2=4^x$

We simplify the left hand side first to get;

$(2^{3\times \frac{1}{3}})^2=4^x$

$2^2=4^x$

We now rewrite the left hand side too in index form to obtain;

$2^2=2^{2x}$

We equate the exponents to get;

$2=2x$

This implies that;

$1=x$

$x=1$

4 0

3 years ago

15 point help asap marking brainlest!!!!!!!!!!!!!!

ziro4ka [17]

slope =(y2-y1)/(x2-x1)

m=(-1-5)/(1--1)

m=-6/2

m=-3

y-y1=m(x-x1) point slope form

y-5 = -3 (x--1)

y-5 = -3 (x+1)

distribute

y-5 = -3x -3

add 5 to each side

y = -3x+2

Choice D

4 0

3 years ago

Read 2 more answers

Help please...... ...

Ket [755]

7&8 if u draw it out first it'll help by tons

5 0

3 years ago

12. The Appalachian Trail is about 2,175 miles long.

spayn [35]

a. (2175 mi)/(18 mi/day) = 120.83... day ≈ 121 days

b. 120.83.../4 = 30.2083...
Joelle will hike 30 full days and one partial day.

6 0

2 years ago