9514 1404 393
Answer:
(a) 1. Distributive property 2. Combine like terms 3. Addition property of equality 4. Division property of equality
Step-by-step explanation:
Replacement of -1/2(8x +2) by -4x -1 is use of the distributive property, eliminating choices B and D.
In step 3, addition of 1 to both sides of the equation is use of the addition property of equality, eliminating choice C. This leaves only choice A.
_____
Additional comment
This problem makes a distinction between the addition property of equality and the subtraction property of equality. They are essentially the same property, since addition of +1 is the same as subtraction of -1. The result shown in Step 3 could be from addition of +1 to both sides of the equation, or it could be from subtraction of -1 from both sides of the equation.
In general, you want to add the opposite of the number you don't want. Here, that number is -1, so we add +1. Of course, adding an opposite is the same as subtracting.
In short, you can argue both choices A and C have correct justifications. The only reason to prefer choice A is that we usually think of adding positive numbers as addition, and adding negative numbers as subtraction.
Answer:1. Distributive property 2. Combine like terms 3. Addition property of equality 4. Division property of equality
Step-by-step explanation:
what is the population of nepal
A tower is 320 feet tall. A model is being built for an architecture project and the model is 8 inches tall. Write the
information that completes the scale for the model. Complete them so the 320 foot height of the tower and the 8 inch height
of the model are still valid for every case.
16 inches : ______ feet
Answer:
640 feet
Step-by-step explanation:
8 = 320
16 = 640
Answer:
640
Step-by-step explanation:
8-->16
320-->640
How many kilograms of tin will be required to make 250 kg of an alloy, if the alloy must contain 81% copper, 14% tin and 5% lead?
Answer:
35
Step-by-step explanation:
all are obeying a constant ratio
copper 81tin 14⇒?lead 5total 100 ⇒250?=250*14/100=35Students in Ms. Bell’s geometry class created posters of geometric definitions. Which of the following is the most precise definition?
A. Parallel lines are lines that do not intersect.
B. A line segment is part of a line that has an endpoint.
C. Perpendicular lines are lines that intersect at a right angle.
D. An angle is formed by two lines, two segments or two rays in one plane.
Answer:
C
Step-by-step explanation:
D is missing 2 ideas.
An angle can be formed by a mixture of the types of figures quoted.An angle has common or shared endpoint.B: to me is unclear. A line does not have an endpoint. A ray does.
A: you need to mention that the lines are coplanar.
I think, brief though it is, C is the most complete and at the same time simplest choice.
16. Simplify: look at picture
please give detailed steps!!
Answer:
[tex] 2\sqrt{3} [/tex]
Step-by-step explanation:
1. Expand the expression
[tex] \frac{6}{ \sqrt{3} } \times \frac{ \sqrt{3} }{ \sqrt{3} } [/tex]
2. To multiply the fractions, multiply the numerators and denominators seperately
[tex] = \frac{6 \sqrt{3} }{ \sqrt{3} \sqrt{3} } [/tex]
3. Calculate the product : when a square root of an expression is multiplied by itself, the result is that expression.
[tex] \frac{6 \sqrt{3} }{3} [/tex]
4. Reduce the fraction with 3 and the solution is :
[tex] = 2 \sqrt{ 3} [/tex]
What’s x = in this equation
Answer:
5m
Step-by-step explanation:
Applying Pythagoras theorem:
a² + b² = c² (where a is base length, b is the height and c is the hypotenuse of the right triangle)
3² + 4² = c²
c² = 9 + 16 = 25
c = x = [tex]\sqrt{25}[/tex] = 5
∴ x = 5m
a Find the sum of interior angle of the heptagon
Answer:
sum of the interior angles=900°
Answer:
900°
Step-by-step explanation:
To find any shape sum of interior angles ,
we use the formula,
(n-2)180°, where n is the number of sides
So for heptagon,
n=7
using formula,
(7-2)180°
=> 5(180)
=> 900°
need the answer as soon as possible
Answer:
soln
Step-by-step explanation:
=21÷x-2s
=21÷7-2×9
=3-18
=-15
Joshua spent 3/100 of the money he earned from mowing lawns on a gift for his mother.com what percent of his earning did Joshua spend?
Answer:
3%
How did I get it?
3/100 as a decimal is 3% (3%/100)
Suppose an ATM PIN must consist of 6 numbers from the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9, with repeats allowed. For example, an acceptable PIN could be 955123.
1. How many possible ATM PINs are possible?
2. If someone had one attempt to guess an ATM PIN, what is the probability they would guess correctly with one attempt?
Answer:
1) the no. of possible pins are 6×5×4×3×2×1
=720
2) the probability is 1/720
Find the number of steel ball bearings, each of diameter 0.7 cm, which can be made from 1 kg of steel, given that 1 cm' of steel has a mass of 7.85 g.
Answer:
707.7, or 707
Step-by-step explanation:
0.18 x 7.85 g = 1.413 g/one bearing. Total amount of bearings: 1kg = 1000 g/1.413
Please Help!!! Will give brainliest
Answer:
except of (g) all limits exist
Step-by-step explanation:
All the solutions are in the picture.
A line passes through the point (-4,-6) and has a slope of -5/2. Write an equation in slope intercept form for this line
Answer:
y= -5/2x-16
draw the point on the graph and use rise over run to find the y intercept
Answer:
y= -5/2x-16
Step-by-step explanation:
hope it helps
hope its right :)
please help me answer this question.
Answer:
702 feet
Step-by-step explanation:
(24×27)+(9×6) = 702
John's bank account was overdrawn. The status of his account was -$133. He did not realize the problem and wrote another check for $55. The bank charged him a $22 fee for being overdrawn.
What was the new status of John's account at this point?
Answer:
210
Step-by-step explanation:-133-55-22=210
Please help with this question
Answer:
bdjjirलअाफखनल पनपअ लbबजदहडनदजडनफjnnkdffruidirbttjt tjrjnf h
Step-by-step explanation:
uuhsbd?eg\bnothing hereafter hgbg
Define bisector of a line
Answer:
The line that divides something into two equal parts. You can bisect line segments, angles, and more.
Step-by-step explanation:
A bisector is what divides a line into two equal parts.
Each byte contains 8 bits of information. Write an equation to represent the relationship between the number of packets of information and the number of bits. Be sure to define your variables.
Answer: 8b
Step-by-step explanation:
Equation:
Let b equal the number of bytes
byte = 8b
helpppp timed on this helppp me quick brainleast
Answer:
Answer 1
Step-by-step explanation:
Hey here! This is your answer:
L = 9
Step-by-step explanation:
Using the formula A = wl we can figure out this question.
[tex]l=\frac{A}{W} = \frac{36}{4} =9[/tex]
PLEASE HELP MEEEEEEEEEEEEEEEEE
Answer:
A. .25
B. .95
C. .75
D. .42
Step-by-step explanation:
√400=x² what is x? Thanks
Answer:
x=4.47213
I hope it's helps you
this isn’t a question but to everyone who’s actually good at math thank you so much for taking the time to answer these questions.
Answerurdsrd d e
Step-by-step explanation:
In a competitive examination negative marks of 2 are awarded for each wrong answers and 4 marks for every correct answer. If neerav gets 15 correct answers and 5 wrong answers and rajan gets 14 correct answers and no wrong answers, who gets more marks and by how much?
9514 1404 393
Answer:
Rajan gets 6 marks more
Step-by-step explanation:
Neerav's marks are (15)(4) +(5)(-2) = 60 -10 = 50.
Rajan's marks are (14)(4) = 56.
Rajan gets 6 more marks than Neerav.
a student multiplied 7236 by 65 instead of multiplying 56 . by how much was the answer greater than the correct answer (hint : do you need to do both the multiplication)
Answer:
65124Step-by-step explanation:
The student's solution when he/she multiplied the wrong given:7236 × 65= 470340The student's solution when he/she multiplied the correct given: 7236 × 56= 405216Measure how much was the wrong answer greater than the correct answer:470340 - 405216= 65124
[tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]
help me plz branniest to whoever right
5*213 is a 5 digit number replace the * number by smallest digit to make them divisible by 3
Answer:
1
Step-by-step explanation:
that is the answer
because 51213÷3=17071
3 - 2 + 6 - 1 steps to please
Answer:
the answer is 6
hope this helps:)
Answer:
6
Step-by-step explanation:
3-2 = 1
6-1= 5
5+1= 6 this is the answer hope it is help for u
2x ^ 4 What is being raised to the exponent ?
Answer:
x
Step-by-step explanation:
Given
2[tex]x^{4}[/tex] ← the exponent 4 is attached to the variable x only
[tex](2x)^{4}[/tex] = [tex]2^{4}[/tex] [tex]x^{4}[/tex] where the 4 is attached to both the 2 and the x
Math- what’s 2+2 and how is it calculated
Answer:
4
Step-by-step explanation:
we have 2oranges from you and another 2oranges from your friend, you have 4oranges, simple
Point H is located at (-3,-2) on the coordnate plane. Point H'. What ordered pair describes the location of H'?
Answer:
You bought a
Step-by-step explanation: