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3 years ago

20 ft. and 7 ft. what is the scale factor?

Mathematics

1 answer:

ser-zykov [4K]3 years ago

7 0

Setting up a ratio 20 ft/7 ft cannot be reduced ratio is the same as given

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Solve 4x - 3 = 18. Round to the nearest thousandth.

lorasvet [3.4K]

Answer:

$x=5.250$

Step-by-step explanation:

We have been given an equation $4x-3=18$ . We are asked to solve our given equation.

First of all, we will add 3 to both sides of our equation.

$4x-3+3=18+3$

$4x=21$

Now, we will divide both sides of our equation by 4.

$\frac{4x}{4}=\frac{21}{4}$

$x=5.25$

Upon rounding our answer to nearest thousandth (3 places after decimal) we will get,

$x=5.250$

Therefore, the solution for our given equation is $x=5.250$ .

6 0

3 years ago

Read 2 more answers

I need help please!!

shepuryov [24]

The first one the height of the candle remains the same after many minutes the second one the water in a storage tank decreas. Find slope by using slope formula

3 0

3 years ago

A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimat

Contact [7]

Answer: a. n= 1068

b. n= 164

Step-by-step explanation:

The formula to find the sample size :

$n=p(1-p)(\dfrac{z^{*}}{E})^2$

, where p=prior population proportion , z* = critical z-value and E = Margin of error.

Here , let p=proportion of computers that use a new operating system.

Given : Confidence level = 95%

i.e. z* = 1.96 [by z-table]

Margin of error : E = 3% =0.03

a. If p is unknown , then we assume p=0.5

Then, $n=(0.5)(1-0.5)(\dfrac{1.96}{0.03})^2=1067.11111\approx1068$

i.e. n= 1068

b. p=0.96

Then, $n=(0.96)(1-0.96)(\dfrac{1.96}{0.03})^2=163.908266667\approx164$

i.e. n= 164.

6 0

3 years ago

Justin is redoing his bathroom floor with tiles measuring 6in. by 14 in. The floor has an are of 8,500 in. What is the least num

valina [46]

area of tile = 6 *14 = 84 square inches

number of tiles = 8500/84 = 101.19

102 tiles are needed

5 0

3 years ago

an experiment consists pf flipping a fair coin 4 times. what is the probability of obtaining at least one head?

yan [13]

50%

There's always a fifty percent chance that it will land on heads or tails

6 0

3 years ago