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3 years ago

Multiplying using partial products 23×79

Mathematics

2 answers:

strojnjashka [21]3 years ago

4 0

20*70=140
3*9=27
140+27=167

vichka [17]3 years ago

4 0

The answer will be 1,817

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To get to school, Grayson usually walks 1.5 miles west and 0.8 miles north on the sidewalks. Because he is in a hurry, he has de

Alex17521 [72]

Answer:

Grayson has to walk 1.7 miles across the field.

Step-by-step explanation:

We have drawn the diagram for your reference.

Given:

Grayson usually walks 1.5 miles west on the side walks

According to Diagram we can say;

CA = 1.5 miles

Also Given:

Grayson also walks 0.8 miles north on the sidewalks

So According to Diagram we can say;

BA =0.8 miles

Now we need to find number of miles Grayson have to walk across the field.

According to diagram we can say;

We have to find CA.

Assuming the diagram to be right angled triangle.

We can find CA using Pythagoras theorem.

${CA}^2 = {CB}^2+{BA}^2$

Substituting the given values we get;

${CA}^2 =1.5^2+0.8^2 = 2.25 +0.64 =2.89$

Taking square root on both side we get;

$\sqrt{{CA}^2} = \sqrt{2.89} \\\\CA = 1.7 \ mi$

Hence Grayson has to walk 1.7 miles across the field.

4 0

3 years ago

A study revealed a strong, linear, negative association between a decrease in salary and amount spent on clothes. Another study

kakasveta [241]

Answer:

A. simpson's paradox

Step-by-step explanation:

The Simpson's paradox was named after Edward Simpson, the person who described this paradox for the first time in 1951. In this paradox, you find two contrary patterns. For example, a positive and a negative correlation, depending on how data is analyzed. The differences in the analyses are how data are grouped. This paradox is observed often in social researches. Most of the times, results are affected by the sample on each group or additional information related to the data.

5 0

4 years ago

X+2y=6 2x+4y=12 I need to use substitution to solve, may anybody help?

lana66690 [7]

$x + 2y = 6$

$x = - 2y + 6$
$2( - 2y + 6) + 4y = 12$
then find y and plug that y value into one of the original equations to find x

Hope this helps!

7 0

3 years ago

Use division to find the unit rate. It rained 16 inches in 8 hours.

elena55 [62]

Answer:

2 inches per hour

Step-by-step explanation:

To convert to unit rate you can turn these 2 numbers into a fraction,

( the top part of the fraction is the inches unit and the bottom part is the hours)

16 and 8 into 16/8 then you simplify the fraction. So 16/8=2.

2 also equals 2/1 so its 2 inches every 1 hour.

5 0

3 years ago

Help help help help

goblinko [34]

Answer:

$\displaystyle m=\frac{-1}{2}$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Reading a Cartesian plane
Coordinates (x, y)
Slope Formula: $\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Find points from graph.

Point (4, 1)

Point (0, 3)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [Slope Formula]: $\displaystyle m=\frac{3-1}{0-4}$
[Fraction] Subtract: $\displaystyle m=\frac{2}{-4}$
[Fraction] Simplify: $\displaystyle m=\frac{-1}{2}$

4 0

3 years ago