2y + x + 7 = 0
how do i solve with substitution?
Answer:
x+2y=-7
Step-by-step explanation:
2y + x =-7
x+2y=-7
WILL MARK BRAINLIEST, PLEASE EXPLAIN HOW YOU GOT YOUR ANSWER!!!
The equation for lines can be written as y = –6x + 2. Line t includes the point (–6, –7) and is perpendicular to line s. What is the equation of line t?
Solve the linear equation.
45 = -( 7x + 1) +4(-8x-8)
Answer:
Today: Monday, 12 October 2020
Hour: 13.35 WIB (in Indonesian)
_________________________
Identify the written form of this number: 4,812,000. A. four hundred thousand, eight hundred twelve B. four thousand and eight hundred twelfths C. four million, eight hundred twelve thousand D. four billion, eight hundred twelve million Help please
Answer: C. four million, eight hundred and twelve thousand
Step-by-step explanation:
4,812,000.
When a figure consists of 7 numbers, it is regarded as millions. For example, 8,000,000 is right million on words.
4,812,000 will therefore be called four million, eight hundred and twelve thousand.
Nyali paid $62 for a bicycle. She sold it later for $46.
What was her percentage loss?
Answer:
25.8 %
Step-by-step explanation:
FIrst you need to find how much 1% of sixty two is worth (1.612) then find the difference between values ($16) then multiply these values together to find your answer
Andre wants to buy a $230 MP3 player. He has $50 and will save $30 per month. Write an equation in slope intercept form to determine how much Andre will have to save.
Answer:
Step-by-step explanation:
A=230
230-50=180
He will have to save 180
He can save 180 in :
180:30=6 mounths
Answer:
y=30x+50
Step-by-step explanation:
he has a base number of 50 dollars starting out (b) and he will gain 30$ once a month (x)
Show work on y=-4x-1
Find the slope
m=-4. Or atleast that’s what I’ve heard.
The table represents a linear function.
[ x y ]
-----------
-2 8
-1 2
0 -4
1 -10
2 -16
-----------
What is the slope of the function?
–6
–4
4
6
Mindy spent $6.24 for a new binder, $1.95 for a notebook, and $5.59 for a new pack
of her favorite mechanical pencils. Estimate ABOUT how much did she spend?
Answer:
$14.20
Step-by-step explanation;
Rounding$6.24=$6.20
$1.95=$2.00
$5.59=$6.00
So now we have done our rounding, We just have to add them together now.
($6.20+$2.00+$6.00=$14.20)
Answer:
Mindy spent around $13
Step-by-step explanation:
I just added up all the whole numbers.
But I noticed that it is ALMOST $2 for a notebook.
So, even though the sum of all the whole numbers is 12, I assumed it would be more than 12.
So Mindy spent around $13
Hope I helped :)
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Mr. Williams's class has 12 girls and 17 boys. He plans to randomly select one student to take notes each day for the class
notebook. If all students are present, what is the probability that he randomly selects a girl to take notes on the first day of
class?
Answer:
12/29 chance or 0.413793103
Step-by-step explanation:
12+17=29
17/29 boys
12/29 girls
Is anyone able to help me with finding the volume of the triangular prism
Answer:
1296 m³
Step-by-step explanation:
Volume = area * height.
Take any of the given faces. I have taken 12m & 12 m.
Area of this face = 1/2 * 12m * 12m
= 72 m²
Height = 18 m.
Thus,
Volume = 72m² * 18m = 1296 m³
Help pls
Part A: Show another way to find the slope of the line that passes through the points listed in the table. Your way must be different from Avery's method.
Step-by-step explanation:
Slope of line= (y2-y1)/(x2-x1)
= (45-18)/(20-8)
= 27/12
= 9/4
Question Progress
Factorise 3x^2+ 5x = 12
Answer:
(3x-4)(x+3) = 0
x = -3, 4/3
Step-by-step explanation:
3x^2 + 5x = 12
3x^2 + 5x - 12 = 0
(3x-4)(x+3) = 0
x = -3, 4/3
What is the solution to 4.1 x 6.5 + 7.6 + 2
Answer:
36.25
Step-by-step explanation:
here are 10 numbers 3 7 2 4 7 5 7 1 8 8
-254 minus -254 equals ?
Answer:
0
Step-by-step explanation:
They both cancel eachother out.
(5, -8) m = -3
Write an equation in point-slope form
Answer:
y + 8 = - 3(x - 5)
Step-by-step explanation:
The equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
Here m = - 3 and (a, b) = (5 - 8) , thus
y - (- 8) = - 3(x - 5) , that is
y + 8 = - 3(x - 5)
You buy 70 of your favorite songs from a Web site that charges $0.99 for each song. What is the cost of 70 songs? Use mental math.
Answer:
69.3
Step-by-step explanation:
70-0.7
Answer:
$69.3
Step-by-step explanation:
I did mental math
De divided by f if d= -24 e= -4 f= 8
Ricky is inviting 8 friends to a party. If each friend will get 6 cookies and in each box are 10 cookies, how many boxes will Ricky need to get?
Answer:
5
Step-by-step explanation:
8 times 6 is 48. 5 boxes times 10 in each one is 50 cookies.
Number of boxes Ricky needs to get to a party is equals to 5 boxes.
What is word problem?
" A word problem is a mathematical problem in which we represents the real life examples with the help of mathematical operation."
According to the question,
Number of friends invited in a party = 8
Number of cookies given to each friend = 6
Total number of cookies required for 8 friends = 8 × 6
= 48 cookies
Number of cookies in each box = 10 cookies
Number of boxes for 1 cookie = 1 / 10
Number of boxes for 48 cookies = (1 / 10) × 48
= 4.8
= 5 boxes (Number of boxes cannot be
in decimals)
Hence, number of boxes Ricky needs to get to a party is equals to 5 boxes.
Learn more about word problem here
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⚠️⚠️ ANSWER PLEASE question in image ( please explain ? ? )⚠️⚠️
Answer:
i cant see the picture
Step-by-step explanation:
sowey
Answer:
(0,-2)
Step-by-step explanation:
I need help with my question
WHAT DOES y= IxI mean
Answer:
it means the ratio of x
ex. |-5| = 5 and so on
|7|=7
what is mensuration and give three common shapes and their diagrams
Maths > Mensuration
Mensuration
Suppose you want to put a boundary around your garden or field. For that, you need to find out the length of the boundary. Also, what if you want to find out the area and volume of different geometrical shapes. So this is something we are going to see in his chapter. So let us study the topic mensuration and mensuration formulas in detail.
Cylinder
Circles
Polygons
Rectangles and Squares
Trapezium, Parallelogram and Rhombus
Area and Perimeter
Cube and Cuboid
Question. Explain the use of mensuration in daily life?
Answer. The uses of mensuration in real life are many. Some of these uses are as follows:
Measurement of agricultural fields, and site areas for the purpose of purchase/selling transactions.
Measurement of volumes for packaging solid food items, milk, and liquids.
Measurements of surface areas for the purpose of estimating the painting of houses etc.
Question. What is meant by mensuration?
Answer. Mensuration refers to the branch of mathematics which involves the study of various geometrical shapes. Furthermore, it deals with the areas and Volume of such geometrical figures. So, this subject is all about the process of measurement.
Question. Explain what is the volume in mensuration?
Maths > Mensuration
Mensuration
Suppose you want to put a boundary around your garden or field. For that, you need to find out the length of the boundary. Also, what if you want to find out the area and volume of different geometrical shapes. So this is something we are going to see in his chapter. So let us study the topic mensuration and mensuration formulas in detail.
Cylinder
Circles
Polygons
Rectangles and Squares
Trapezium, Parallelogram and Rhombus
Area and Perimeter
Cube and Cuboid
Question. Explain the use of mensuration in daily life?
Answer. The uses of mensuration in real life are many. Some of these uses are as follows:
Measurement of agricultural fields, and site areas for the purpose of purchase/selling transactions.
Measurement of volumes for packaging solid food items, milk, and liquids.
Measurements of surface areas for the purpose of estimating the painting of houses etc.
Question. What is meant by mensuration?
Answer. Mensuration refers to the branch of mathematics which involves the study of various geometrical shapes. Furthermore, it deals with the areas and Volume of such geometrical figures. So, this subject is all about the process of measurement.
Question. Explain what is the volume in mensuration?
Answer. Any solid occupies some region in space. Furthermore, the magnitude of this region is known as the volume of the solid. A standard unit of volume happens to be the cubic centimetre.
Question. What do we understand by mensuration formula?
Answer. A mensuration formula helps in computing the length-related properties of an object. This computation takes place on the basis of known lengths, areas, etc. Beyer (1987) came forward with a collection of mensuration formulas for the various plane and geometric figures. properties of an object. This computation takes place on the basis of known lengths, areas, etc. Beyer (1987) came forward with a collection of mensuration formulas for the various plane and geometric figures.
Find the Highest Common Factor of 120 and 150.
Answer:
30
Step-by-step explanation:
120 divided by 30 is 4, and 150 divided by 30 is 5.
Answer: What is the greatest common factor of 120 and 150? The greatest common factor of 120 and 150 is 30, because 30 is the highest number that is divisible by both numbers.
i need help helping my brother asap
Evaluate the equation.
7.15e = 64.35
A. e = 8
B. e = 9
C. e = 460.0125
D. e = 460.1025
The following is the correct way to show the product for 0.297 times 7.1
Answer:
True
Step-by-step explanation:
True
No, This is not the correct way to solve the product of 0.297 and 7.1.
What is Multiplication?To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
Given that;
To solve the product for 0.297 times 7.1.
So, The product for 0.297 times 7.1 is,
⇒ 0.297 × 7.1 = 2.1087
But here the product for 0.297 times 7.1 is 21.087.
So, This is not the correct way.
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the function f(x)=5(2)x represents number of bacteria, f(x), growing in a culture after x hours. How many bacteria are in the culture after 3 hours?
=============================================
Explanation:
Assuming the function is f(x) = 5(2)^x, then we replace every x with 3. Then we use the order of operations PEMDAS to simplify. Or we can use a calculator to simplify in one step.
f(x) = 5(2)^x
f(3) = 5(2)^3
f(3) = 5(8)
f(3) = 40
Shyann won 40 halloween candies playing the toss at her school's carnival. Later she gave three to each of her friends. She only has remaining. How many friends does she have?
Answer:
alot
Step-by-step explanation:
i cant understand this
Answer:
13
Step-by-step explanation:
13 times 3 = 39
40-39=1
What is the mean of this set 18,21,20,14,17
Answer: 18
Step-by-step explanation:
Add them all up
18+21+20+14+17=90
Divide by 5 since that is how many numbers there are
90/5=18
Answer:
the mean is 18
Step-by-step explanation:
you add them all up and then divide by the number of numbers
18+21+20+14+17=90
90/5=18
hey diddle diddle the median is in the middle, you add and divide for the mean the mode is the one that appears the most and the range is the difference between.
Hope this helps!!