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2 years ago

Why is it important to rename 4 1/4 if you subtract 3/4 from it

1 answer:

4 0

Because 3 2/4 would be the answer when you subtract it and most teachers and/or tests want you to simplify the answer which would be 1/2 because you would divide the numerator and denominator by 2.

You might be interested in

Does anyone know the answers to this algebra question? Will give brainiest

MaRussiya [10]

Option 1 : -22

using formula

(a + b )(a - b ) = a^2 - b^2

(√10 + 2√8) (√10 - 2√8)

= (√10)^2 - (2√8)^2

= 10 - 2×2×8=10-32

= -22

2nd question answer is option 3

3 0

2 years ago

If y varies inversely as x, and y = 4 when x = 16, what is the value of y when x = 8?

tensa zangetsu [6.8K]

I suppose that the value of y equals 2, seems how 4 times 2 what equal 8 and 8 times 2 would equal 16

4 0

3 years ago

2. En el sobre de un jugo instantáneo aparece la siguiente información: “prepare un delicioso litro de jugo de naranja”. Si con

babunello [35]

2) 200 mL

3) 0.2 kg

Step-by-step explanation:

In this problem, we know that:

- With 1 liter of juice, we can fill a total of 5 cups

So we know that the total volume of 5 cups is equal to

V = 1 L

This means that the volume of each cup is equal to the total volume divided by the number of cups (5), therefore:

$V_1=\frac{V}{5}=\frac{1L}{5}=0.2 L$

And keeping in mind the equivalence between liters and milliliters:

1 L = 1000 mL

This means that the capacity of each cup is

$V_1=0.2 L \cdot 1000 mL/L = 200 mL$

Here we want to find the mass contained in each cup.

We know that the mass of a substance is related to each volume by the equation

$d=\frac{m}{V}$

where

d is the density

m is the mass

V is the volume

In this problem, we have:

V = 0.2 L is the volume of juice in each cup

$d=1kg/L$ is the density of juice (assuming it is the same as the density of water)

So, the mass of juice in one cup is:

$m=dV=(1)(0.2)=0.2 kg$

8 0

3 years ago

As discussed in Exercise 6.10, the General Social Survey reported a sample where about 61% of US residents thought marijuana sho

Maslowich

Answer: 2285

Step-by-step explanation:

Formula to find the sample size is given by :-

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

, where p = prior estimate of population proportion.

E= Margin of error.

$z_c$ = z-value for confidence interval of c.

Given : Confidence interval : 95%

From the z-value table , the z-value for 95% confidence interval = $z_c=1.96$

The General Social Survey reported a sample where about 61% of US residents thought marijuana should be made legal.

i.e. the prior estimate of population proportion of US residents thought marijuana should be made legal : p=0.61

[∵ sample proportion is the best estimate for population proportion.]

Margin of error : E= 2%=0.02

Now, the required minimum sample size would be :-

$n=0.61(1-0.61)(\dfrac{1.96}{0.02})^2$

Simplify ,

$n=0.2379\times9604=2284.7916\approx2285$

Thus , we need to survey <u>2285</u> Americans .

4 0

3 years ago

A regular polygon has an exterior angle of 7.5 what is the sum of the interior angle

AVprozaik [17]

Answer:

540

Step-by-step explanation:

8 0

3 years ago