3 years ago

What ratio is equal to 7/8

Mathematics

1 answer:

Aneli [31]3 years ago

3 0

21:28 is equal to 7:8

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Just number 23 super confused

vodka [1.7K]

Answer:

x = -7

Step-by-step explanation:

This is an exponential equation.

$\frac{1}{2}^x=128$

We need to take log(or ln) of both sides and use logarithm property to solve this.

So, let's take ln of both sides, so we have:

$ln(\frac{1}{2}^x)=ln(128)$

Now, we will use this property shown below to further simplify:

$ln(a^b)=bln(a)$

So, we now have:

$ln(\frac{1}{2}^x)=ln(128)\\xln(\frac{1}{2})=ln(128)\\x=\frac{ln(128)}{ln(\frac{1}{2})}\\x=-7$

The value of x is -7

6 0

3 years ago

Simply: 200+(20-4)-2×3

alexandr1967 [171]

Answer:

The answer is 210

Step-by-step explanation:

200+(20-4)-2x3

first you'd do 20-4= 16

then you'd do 2x3=6

next you'd 16-6=10

finally 200+10=210

5 0

3 years ago

If a ratio is 4:5, how many parts are there in total?

hjlf

<h2>♣️ANSWER♣️</h2>

<h2>9 parts in total</h2>

5 0

2 years ago

Read 2 more answers

If a fair penny is tossed 24 times and comes up heads 18 times, what is the probability of heads coming up on the 25th flip of t

Allushta [10]

There’s a 75% chance. i’m not sure if that the answer ur looking for but i divided 24 by 18 and got 0.75

8 0

2 years ago

Evaluate the functionf(-x) = f(x) plug in the points (2,1) then solve

jarptica [38.1K]

Problem

evaluate the function

f(-x) = f(x)

plug in the points (2,1) then solve

Solution

For this case we can conclude that:

f(2) =1

So then we satisfy that:

f(-2) =1

6 0

11 months ago