Answer:
×=2
Step-by-step explanation:
7=×+9
×=9-7
×=2
as we were told tht the value of y=7 which means where the is y we subsitude 7
which will give us 7=×+9
The addition of 9 is positive and 7 is positive, then when jumping the equal sign it shall be negative therefore 9-7=2
Answer:
2)
a. x= -84
b. x= 9/4 or 2.25 in decimal form
c. x= 53/5 or 10.6 in decimal form
d. x= 31/2 or 15.5 in decimal form
3)
a. y= -10
b. y= -28
c. y= -114
d. y= 68
Step-by-step explanation:
2) substitute y as 7
a. y= x+91
7=x+91
7-91=x
-84=x
x= -84
——————
b. y= 4x-2
7=4x-2
7+2=4x
9=4x
9/4=x
x=9/4 or 2.25
————————
c. y= 5x-46
7= 5x-46
7+46=5x
53=5x
53/5=x
x=53/5 or 10.6
—————————
d. y= 6x-86
7= 6x-86
7+86=6x
93=6x
93/6=x
31/2=x
x= 31/2 or 15.5
—————————
3) substitute x as 13
a. y= -x+3
y= -13+3
y= -10
——————
b. y= -2x-2
y= -2(13)-2
y= -26-2
y=-28
——————
c. y= -3x-75
y= -3(13)-75
y= -36-75
y= -114
——————
d. y= 8x-36
y= 104-36
y= 68
hope that helped you. cymath can also help you
Justify the steps by naming the property used 4 + (18+16), 4+(16+18), (4+16)+18
Answer:
38
Step-by-step explanation:
4 + 34, 4 + 34, 20 + 18
38, 38, 38
Are the ratios 3:5 and 2:4 equivalent?
yes or no
Answer:
No, they are not.
Step-by-step explanation:
A ratio can be written as a fraction. So 3:5 is the same as 3/5 and 2:4 is the same as 2/4.
3/5 = 2/4
0.6 = 0.5 INCORRECT
As you can see, the both don't equal the same numbers, so they aren't equivalent.
Plz Help I really need the answer. It's ok if you answer only one.
Answer: (for 11b) 15/6
Step-by-step explanation:
I added image of how I solved (I’m 99% sure this is right)
Hope this helps :-))
Answer:
[tex] \frac{5}{2} [/tex]
Step-by-step explanation:
the answer done is of (b)
Hope it helps.
Please help! I will appreciate it
Answer:
yes. because the price is 3 times the number of pens
Step-by-step explanation:
2*3=6
4*3=12
5*3=15
8*3=24
Please help!!
Which expression uses the commutative property to make it easier to evaluate 1/4 x 3/5 x 12?
A: 4/12 x 3/5 x 1
B: 1/4 x 5/3 x 12
C: 12 x 3/5 x 1/4
D: 1/4 x 12 x 3/5
Answer:
C
Step-by-step explanation:
Helpppp pleeeaasssee
Answer: Thrid choice. 4
Step-by-step explanation:
Given equation
(-3/4)m - (1/2) = 2 + (1/4)m
The least common multiple of the denominator
First three multiples of 2: 2, 4, 6
First three multiples of 4: 4, 8, 12
Since 4 is the first common multiple, 4 is the least common multiple of 2 and 4.
By multiplying [tex]\boxed{4}[/tex] on both sides, the fraction can be eliminated.
Hope this helps!! :)
Please let me know if you have any questions
Graph the following lines on the coordinate plane:
Answer:
https://vietjack.com/giai-toan-lop-9/images/bai-38-trang-62-sgk-toan-9-tap-1-
Step-by-step explanation:
Vẽ đồ thị y = 2x (1):
Cho x= 0 ⇒ y= 0 ta được O (0, 0)
Cho x= 2 ⇒ y = 4 ta được điểm (2; 4)
- Vẽ đồ thị y = 0,5x (2):
Cho x= 0 ⇒ y = 0 ta được O (0; 0)
Cho x = 4 ⇒ y = 2 ta được điểm (4; 2)
- Vẽ đồ thị y = -x + 6 (3):
Cho x = 0 ⇒ y = 6 được điểm (0; 6)
Cho y = 0 ⇒ x = 6 được điểm (6; 0)
Để học tốt Toán 9 | Giải bài tập Toán 9
PLZZ Help!!!! Giving a lot of points!! Thank you so much!!
Find the length x.
Answer:
4
Step-by-step explanation:
they're the same triangle, but one is bigger. the 2,5 and 5 sides are equivalent, so with that we are able to know the big triangle is exactly 2x bigger. u multiply the 2 side (because it's equivalent to the x side) by 2 (bc the triangle is 2 times bigger) and you get 4 = x
Mary bought 5 bracelets for $12.60. Danielle bought 7 bracelets for $15.75.
A. Who had the better buy for one bracelet?
B. By how much? (Hint find the unit rate for each)
Answer:
Mary
Step-by-step explanation:
Mary paid less for one bracelet. Tell me if I was wrong!
pls help i need help
Answer:
your answer would be 7285.63
Having two periods means it has two groups of digits separated by a comma.
6 digits would be xxx,xxx
An 8 worth 80 means the 8 is in the tens place.
And you have a 2 in the hundreds place.
All other digits can be any number.
Answer: 543,280
Find the unit rate.
10 newspapers in 2 piles
=
newspapers per pile
Answer:
5 newspapers in 1 pile
Step-by-step explanation:
If there are 10 newspapers in 2 piles, to find the number of newspapers in 1 pile, we need to divide 10÷2 which equals 5.
Answer: 5 newspapers per pile
Step-by-step explanation:
= 10 newspapers in 2 piles
= newspaper per pile = 10 / 2
= 5
So , newspaper per pile is 5
This is your answer
The product of three integers is −7. Determine all of the possible values for the three factors. Write each set of three factors in order from least to greatest. Make sure that each set uses unique integers. Listing the sets in a different order doesn't count.
Three possible products whose factors multiply to −7 are
The three possible sets of integers whose product is -7 are:
1. (1, 1, -7) (least to greatest)
2. (-1, 1, 7) (least to greatest)
3. (-1, -1, 7) (least to greatest)
To find the three possible sets of integers whose product is -7, we need to consider all the combinations of three integers whose product results in -7. Keep in mind that each set should use unique integers. Let's explore the options:
1. Set 1: [tex]\(1 \times 1 \times -7 = -7\)[/tex]
2. Set 2: [tex]\((-1) \times 1 \times 7 = -7\)[/tex]
3. Set 3: [tex]\((-1) \times (-1) \times 7 = -7\)[/tex]
The three possible sets of integers whose product is -7 are:
1. (1, 1, -7) (least to greatest)
2. (-1, 1, 7) (least to greatest)
3. (-1, -1, 7) (least to greatest)
Each set consists of unique integers, and the product of all three integers in each set is -7.
To know more about integers:
https://brainly.com/question/30264184
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Volunteers at Sam's school use some of the student council's savings for a special project. They buy 8 backpacks for $8 each and fill each backpack with paper and pens that cost $3. By how much did the student council's savings change because of this project?
The savings was changed by
dollars.
Answer:
The savings were changed by $88
Step-by-step explanation:
1 backpack costs 8 dollars and they bought 8 of them, you have to multiply 8 dollars by 8 cause there is 8 backpacks which is 64 , pen and pencils for 1 backpack costs 3 dollars , so you have to multiply 3 by 8 cause there are 8 backpacks which is 24. then you add 64 and 24 which is 88
Find the unit rate.
12 passengers in 4 cars
passengers per car
Answer:
3
Step-by-step explanation:
12/4=3 per car
I WILL MARK AS BRAINLIEST! Solve the following
Answer:
6) a) 69 b) 97 c)86 d)71
7) A.
Step-by-step explanation:
6)
a) -1-[9(-8)]-2 = -1 - (-72) -2
= -3 + 72 = 69
b) 81 + 4² = 81 + 16
= 97
c)12×7 + 6÷3 =(12×7)+(6÷3)
= 84 + 2
=86
d)74 + 9 ÷ -3 = 74 + (9÷ -3)
= 74 - 3
= 71
7)
Statement: Larry has at most seven miles left in the race
This statement is represented by the inequality;
[tex]x \leqslant 7[/tex]
Answer:
Part A.
69
Part B.
97
Part C.
93
Part D.
86
Step-by-step explanation:
Part A.
-1-9x(-8)-2
-1+72-2
69
Part B.
81+4^2
81+16
97
Part C.
12x7+6+3
84+6+3
93
Part D.
74+9+3
83+3
86
Help me Guess just help please
Answer:
A and B are irrational
Step-by-step explanation:
A cannot be reduced to a whole number.
same with B.
C can be reduced to 9 as 9x9 = 81
D can be reduced to 8 as 8x8 = 64
I need help pls thank u
Answer:
The answer is 410 5/8
I WILL MARK AS BRAINLIEST! Find the surface area and Volume of the following figures
Step-by-step explanation:
a) is really easy, right ?
the surface area consists of 6 rectangles (as you know, every die has 6 sides). they are 3 pairs of equally sized rectangles.
there are 2 rectangles 7×1, 2 rectangles 7×2, and 2 rectangles 2×1
SA = 2×7×1 + 2×7×2 + 2×2×1 = 14 + 28 + 4 = 46 in²
the volume is just length×width×height
V = 7×2×1 = 14 in³
b)
a little bit more difficult, but with a little trick just as easy.
the surface area consists of the 2 circle areas and the mantle "coating".
the area of a circle is pi×r².
we have to be careful as the given 10 ft is the diameter of these circles. the radius is half of it : 5 ft.
the area of the "mantle" we can calculate by imagining we simply slice it open with one straight line from top to bottom. and then we cut it off the two circles and put it flat on the table.
now we see it is just a rectangle. one side is 12ft. the other is the circumference of the previously attached circles.
circumference of a circle is 2×pi×r
so the surface area is 2×circle + (circumference circle)×12
SA = 2×pi×5² + (2×pi×5)×12 = 50pi + 120pi = 170pi =
≈ 534.07 ft²
the volume is one base area (circle) times height
V = pi×5²×12 = 300pi ≈ 942.48 ft³
3/5(t+18)=-3(2-t) add work please!!!!!!!!
Answer:
7
Step-by-step explanation:
3/5(t+18) = -3(2-t) Distribute
3/5t + 10 4/5 = -6 + 3t Subtract 3/5t in both sides
10 4/5 = -6 + 2 2/5t Add 6 on both sides
16 4/5 = 2 2/5t Divide
t = 7
can anyone help me with this ?
Answer:
81
Step-by-step explanation:
it can be expressed as a product of two smaller numbers 9×9
PLEASE HELPPPP!
Use the list below to classify all the subsets of real numbers that the number "2√" belongs to.
real numbers
irrational numbers
rational numbers
integers
whole numbers
natural numbers
Answer:
Irrational
Step-by-step explanation:
Because irrational numbers are defined as a subset of real numbers, all irrational numbers must be real numbers.
Mental heath day GET SOMETHING OFF YOUR CHEST! (20 points)
rules:
-no hate
-dont be mean
-only good vibes
-say anything
-respect others for being brave and saying it
-have a great day
Staff-please delete after people have gotten help
Answer:
I'm tried of smiling for others and holding all their problems
PLEASE HELP I DON'T UNDERSTAND THIS AT ALL
Step-by-step explanation:
you'll use the previous date t fine the difference ex. if yesterday was 80 degrees and today's is 84 the difference would be 4 degrees. hope this helps a bit ( I'm pretty sure this is correct also remember if you need ask teacher for help!!)
Answer:
Step-by-step explanation:
Basically you have to look at the forecast each day and find the lowest and highest tempreature that day and find the difference and subract the two numbers of the tempreature.
hlppppppppppppppppppppppppppppppppppppppp
Answer:Integer Numbers?
Step-by-step explanation:
Period
Number of Years Ago
Jurassic
2.08 ⋅ 108
Silurian
4.38 ⋅ 108
Tertiary
6.64 ⋅ 107
Triassic
2.45 ⋅ 108
Order the time periods from oldest to youngest.
Answer:
Silurian
Triassic
Jurassic
Tertiary
Step-by-step explanation:
i hope its right
I WILL MARK AS BRAINLIEST! Simplify
Answer:
a) -99
b) -12
c) -105
d) -46
Answer:
a) | -81 - 17 | = 98
b) | 8 - 20 | = 12
c) | -76 - 25 | = 101
d) | -91 + 45 | = 46
Remember, absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.
Hope this helps! :)
Kelly bought a cup of coffee and drank 5/8
of it.
Write an addition equation to represent how much coffee is remaining.
Answer: x+5/8 = 1 is the equation where x is the remaining coffee.
Step-by-step explanation:
he drank = 5/8
whole coffee = 1
so
let coffee remaining be x
1-5/8 = x
x+5/8 = 1
The required equation, for the remaining cup of coffee, is x = 1+(- 5/8).
To determine the addition equation of coffee remaining in the cup, for the condition Kelly bought a cup of coffee and drank 5/8 it.
What is arithmetic?In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication and division,
What is simplification?The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
Let the coffee remaining in the cup be x,
Now, according to the question,
1 = x + 5/8
x = 1 - 5/8
For the addition equation,
x = 1 +(-5/8)
Thus, the required equation, for the remaining cup of coffee, is x = 1+(- 5/8).
Learn more about arithmetic here:
brainly.com/question/14753192
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PLS HELP IM SO CONFUSED ON THIS AND IT DUE THID MORNING I JUST NEED HELP plsss 30 points
Each move below can be “undone” by another move. For example to undo translating 3 units to the right, you could translated 3 units to the left. What move undoes each of these?
Translate 5 units up
Translate 1 unit up and 2 units left
Rotate 90 degrees clockwise about the origin
Reflect over the y-axis
Help! I don't understand rate of change??
Hi :)
Rate of change is the change in the y divided by the change in x
Here's the formula
R = (∆y / ∆x )
R = rate of change
∆y = change in y
∆x = change in x
Select all ratios equivalent to 5:2.
Answer: 30:12
Step-by-step explanation: 5x6= 30 and 2x6=12
Hope this helps!