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2 years ago

PLEASE HELP ME QUICK PLEASE

Mathematics

1 answer:

Vikentia [17]2 years ago

3 0

Answer:

Step-by-step explanation:

in the photo illustrated

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See attachment below

KatRina [158]

Answer: Third Option

$x=1.469743$

Step-by-step explanation:

We have the following exponential equation

$3^{x+1}=15$

We must solve the equation for the variable x

To clear the variable x apply the $log_3$ function on both sides of the equation

$log_3(3^{x+1})=log_3(15)$

Simplifying we get the following:

$x+1=log_3(15)$

To simplify the expression $log_3 (15)$ we apply the base change property

$log_b(y)=\frac{log(y)}{log(b)}$

This means that:

$log_3 (15)=\frac{log(15)}{log(3)}$

Then:

$x+1=\frac{log(15)}{log(3)}$

$x=\frac{log(15)}{log(3)}-1$

$x=1.469743$

6 0

2 years ago

Find the slope and the y-intercept of the equation 4x + 5y = -9

lutik1710 [3]

Answer:

In your equation 4x+5y=-9, you've got to but your equation in slope intercept form which is y=mx+b.

First we need to get the y by itself.

Subtract 4x from each side to get:

5y=-4x-9

Next we want to divide both sides by 5.

y=-4/5x-9/5

Your slope is m which in our case -4/5.

Then our y-intercept is b or -9/5.

Your answer would then be C. slope=-4/5 and y-intercept=-9/5.

Hope this helps ;)

7 0

2 years ago

Help me people who know Trigonometry only! calculate the length a to two decimal places.

aleksandr82 [10.1K]

B or c that's some help.

6 0

2 years ago

Read 2 more answers

The times required for a delivery firm to transport a package from one business address to another in the same metropolitan area

gladu [14]

Answer:

Step-by-step explanation:

Since; the density function diagrams were not included in the question; we will be unable to determine the best which depicts this problem.

However;

Let use X to represent the time required for the delivery.

Then X~N(3.8 ,0.8)

i.e

E(x) = 3.8

s.d(x) = 0.8

NOW; P(x>4) = P(X-3.8/0.8 > 4-3.8/0.8)

= P(Z > 0.25)

= 1-P(Z < 0.25)

=1 - Φ (0.25)

= 1 - 0.5987 ( from Normal table Φ (0.25) = 0.5987 )

= 0.4013

Thus; the probability a single delivery would take more than 4 hours is 0.4013

What is the z value corresponding to the interval boundary?

The z value is calculated as:

$z = \dfrac{X- \mu}{\sigma}$

$z = \dfrac{4- 3.8}{0.8}$

z = 0.25

3 0

2 years ago

NEED HELP ASAP solve for x : 3/5 = x-1/8 <br>a.5 b.29/5 c.23/5 d.19/5

Levart [38]

Answer:

<h3> $\boxed{ \sf{ \bold{ \huge{ \boxed{ \frac{29}{5} }}}}}$ </h3>

Option B is the correct option.

Step-by-step explanation:

$\sf{ \frac{3}{5} = \frac{x - 1}{8} }$

Apply cross product property

⇒ $\sf{ 5(x - 1) = 3 \times 8}$

Distribute 5 through the parentheses

⇒ $\sf{5x - 5 = 3 \times 8}$

Multiply the numbers

⇒ $\sf{5x - 5 = 24}$

Move 5 to right hand side and change it's sign

⇒ $\sf{5x = 24 + 5}$

Add the numbers

⇒ $\sf{5x = 29}$

Divide both sides of the equation by 5

⇒ $\sf{ \frac{5x}{5} = \frac{29}{5} }$

⇒ $\sf{x = \frac{29}{5} }$

Hope I helped!

Best regards!!

8 0

2 years ago