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3 years ago

May i get some help with a step by step concept of the first question please

Mathematics

1 answer:

gizmo_the_mogwai [7]3 years ago

5 0

9514 1404 393

Answer:

J 3/4 cup

Step-by-step explanation:

Step 1: read and understand the question.

The question is giving you amounts of flour and 2 types of sugar.

The question is asking for a difference between two quantities:

the amount of flour (2 1/4 cups)
the combined amount of sugar (3/4 cup white, 3/4 cup brown)

Step 2: determine the relations you need to use to solve the problem

You need the combined amount of sugar, which you find by adding the quantities of each of the kinds.

3/4 cup white + 3/4 cup brown = 6/4 cup sugar combined

You need the difference of that quantity from the quantity of flour, which you find by performing subtraction:

flour - sugar = (2 1/4) - (6/4) . . . . cups

Step 3: Use your knowledge of arithmetic.

(2 1/4) -(6/4) = 9/4 -6/4 = (9 -6)/4 = 3/4

Step 4: Answer the question that was asked.

The difference between the flour and sugar amounts is 3/4 cup.

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In a sample of 41 temperature readings taken from the freezer of a restaurant, the mean is 29.7 degrees and the population stand

yKpoI14uk [10]

Answer: $=(29.1596\text{ degrees},\ 30.2404\text{ degrees})$

Step-by-step explanation:

Given: Sample size: n = 41

Sample mean $\overline{x}= 29.7$ degrees

Population standard deviation $\sigma=2.7$ degrees

Confidence level (c) = 80% =0.80

Significance level (a) = 1- c = 1-0.80 = 0.20

z-score for 80% confidence level : z = 1.2816 [from z-table]

Confidence level for population mean :-

$\overline{x}\pm z\dfrac{\sigma}{\sqrt{n}}$

$=29.7\pm ( 1.2816)\dfrac{2.7}{\sqrt{41}}$

$=29.7\pm ( 1.2816)\dfrac{2.7}{6.403124}$

$=29.7\pm ( 1.2816)(0.42167)$

$=29.7\pm 0.5404$

$=(29.7-0.5404,\ 29.7+0.5404)$

$=(29.1596,\ 30.2404)$

Hence, 80% confidence interval for the temperatures in the freezer $=(29.1596\text{ degrees},\ 30.2404\text{ degrees})$

7 0

3 years ago

MATHSWATCH

Jobisdone [24]

Answer:19683x

Step-by-step explanation:

Evaluate the exponent

27.93x

27.729x

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3 years ago

Please help

V125BC [204]

A cone that is sliced through the vertex would make the shape of a triangle.

You are told the h eight is 10 cm and the radius is 4 cm.

The radius would be half the base, so the base would be 4 * 2 =8 cm.

The area of the triangle is found by multiplying the base by the height, then dividing by two.

Area = 8 x 10 = 80

80 / 2 = 40 square centimeters.

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3 years ago

What are the numbers from least to greatest 6,0,-9,-4.2

Vadim26 [7]

Answer:

(-9), (-4.2), 0, 6

Step-by-step explanation:

Come on

Negative the highest number is first, then zero, positive lowest number is first

you get the point

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3 years ago

2 7/12 x 7 multiply enter the product in the simplest form

allochka39001 [22]

Answer:

18 1/12

Step-by-step explanation:

Hope this helps

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3 years ago