Answer:
(1) x-y-2z=-6 , (2) 3x+2y=-25 , (3) -4x+y-z=12
Step-by-step explanation:
Multiply (3) by 2,
-8x + 2y - 2z = 24
subtract above equation from (1)
9x - 3y = -30 --> 3x - y = - 10
subtract above equation from (2)
3y = -15 --> y = -5
Put y value back into (2)
3x + 2(-5) = -25 --> 3x - 10 = -25 --> 3x = -15 --> x = -5
Put x and y values into (3)
-4(-5) + (-5) - z = 12 --> 20 - 5 - z = 12 --> 15 - z = 12 --> z = 3
Hope its right good luck!!
solve the compound inequality 6b < 36 or 2b + 12 > 6
Answer:
6b < 36
6b = 36
divide both sides by 6
6b ÷ 6 = 36 ÷ 6
b = 6
how would i solve (4x 3 + 7y 3z 4) 2 ?
Answer:
=(4x*3+7z*3z*4)*2
=(12x +84z²) *2
ans =24x+168z²
Step-by-step explanation:
ur question is wrong i guess check it plzz
can someone help me solve 1/4 : 2/3 =
Answer:
11/12
Step-by-step explanation:
hopefully ":" means add cause i have neve learned what that ment btw happy halloween❤
why is math so hard to me but easy for everyone else what division like 31 / 16 is very hard for me
hiiiiii i need help
Answer:
3 goes with 8 and 5 goes with 2
Step-by-step explanation:
I hope this helps!
Charlie's rectangular swimming pool has a volume of 600 cubic feet. The neighbor's
pool has the same length and height, but the width is three times larger. What is the
volume of the neighbor's pool?
A 1200 cu ft
B 1800 cu ft
C 603 cu ft
D 200 cu ft
what is 5+5= because i have no clue
Answer:
5+5=10
Are you a student of class 1??
A taxi service charges you $1.50 plus $0.60 per minute for a trip to the airport. The distance to the airport is 10 miles, and the total charge is $13.50
How many minutes did the ride to the airport take?
Answer:
20 minutes
Step-by-step explanation:
The question can be shown like so, 1.5+0.6x
Since the total charge was 13.5, you can write an equation
13.5=1.5+0.6x
Simplify using property of subtraction
13.5 - 1.5= 1.5 - 1.5 + 0.6x
12 = 0.6x
Simplify using property of division
12/0.6= 0.6x/0.6
x=20
On her last science test, Mariah missed four questions. For those questions, she received a total of -20 points. On the retake, Mariah missed a quarter of the number of questions that she missed the first time. If the tests were scored the same way, how many points did she receive for missing questions on the retake?
-5
-10
-80
-16
Answer:
5
Step-by-step explanation:
in the beginning, she missed 4 questions and received -20 points. it means that each question missed is equal to -5 points.
So, finally, when she missed 1/4 of the four questions, it means that she missed only one question. So, she only received -5 points
The number 0.003 writte in scientific notation is 3x10^3. why is the exponent negative?
Answer:
Answer is the explanation below
Step-by-step explanation:
The exponent is negative because, as a positive exponent means to multiply, a negative exponent means to divide.
I’m having a panic attack omg please actually help me. I have to turn it in a few minutes-
Answer:
take deep slow breaths
Step-by-step explanation:
the slope is 5/1, the y-intercept is 0
y = 5x
I can't see the title for the x axis,
so it would be from the information i can see:
This goes up as this amount of water is used
Mr.Afzal bought an article for Rs4400 for 3years at 8 percent what was the interest charge?
pls solve this question iwill mark as brainlist.
[tex]\large\underline{\underline{\red{\rm\blue{\longmapsto} Step-by-step\: Explanation:-}}}[/tex]
Here , the given data is :
Principal = Rs 4400 . ( P )Time = 3 years . ( T ) Rate of Internet = 8% . ( R )We can calculate Simple Interest using ,
[tex]\boxed{\purple{\bf Simple\: Interest=\dfrac{P\times\:R\:\times\:T}{100}}}[/tex]
On substituting the respective values ,
⇒ SI = P × R × T / 100.
⇒ SI = Rs 4400 × 8 × 3 / 100 .
⇒ SI = Rs 44 × 8 × 3 .
⇒ SI = Rs 1,056 .
Hence the required Interest is Rs 1,056.
The poetry club had its first bake sale and they made 79.35 dollars. The club members are planning to have 4 more bake sales. Leslie said if we make the same amount at each bake sale we will earn 3,976.50 dollars. Peggy said no way we will earn 396.75 after bake sales. Use estimation to help Peggy explain why Leslie reasoning is incorrect.
Answer:
Peggy is correct, their total bakes sale = $396.75
Step-by-step explanation:
Using estimation to help Peggy explain why Leslie reasoning is incorrect.
From the question we can see that:
First bake sale they made = $79.35
4 more bake sales making the same amount = 4 × $79.35
The total amount they would make from the bake sales =
$79.35 + (4 × $79.35)
= $396.75
Peggy was right. Leslie's reasoning was incorrect.
What is the fraction for the following decimal expansion?
0.1111111111
Answer:
There’s like this little slach on the top of the number so that’s it a slach on top of the number that is like 11111111111
Step-by-step explanation:
Answer:
0.1111111111=
1111111111
10000000000
Step-By-Step:
Convert the decimal into a fraction by putting the decimal over 1 in fraction format
0.1111111111= 0.1111111111 /1
Multiply the numerator and denominator by 10 to eliminate decimal places
0.1111111111 × 10 /1 × 10 = 1.111111111 /10
What is this slope ?
The larger of two numbers is equal to three times the smaller.if twice the larger is added to three times the smaller, the sum is 27.Find the anwser
Pls help thank you
Answer:
These numbers are 3 and 9Step-by-step explanation:
x - smaller number
3x - three times the smaller number = the larger number
2×3x - twice the targer number
2×3x+3x - twice the larger is added to three times the smaller
2×3x + 3x = 27
6x + 3x = 27
9x = 27
÷9 ÷9
x = 3
3x = 3×3 = 9
3(4x-7)=27
What does x =?
Please help asap im timed!!!
Answer:
x = 4
Step-by-step explanation:
3 x ( 4x -7 ) = 27
3 x 4x = 12x
3 x -7 = -21
12x -21 = 27
12x -21 + 21 = 27 + 21
12x = 48
12x/12 = 48/12
x = 4
I got a few 1000 more lol :')
Answer:
92
Step-by-step explanation:
Start with the first sentence. 7 crates of 12 eggs each and you need to find out how many eggs that is; that's just 12 + 12 + 12 + 12 + 12 + 12 + 12, or 12 * 7, which equals 84.
Real question is: how many do they have now? Well, if they had 8 eggs at first and they just bought 84 more, then the answer is just 8 plus the 84 that they just bought, which is 92.
Please mark as Brainliest! :)
Answer:
Your correct answer is that they now have 76 eggs left.
Step-by-step :
So, to start off, they had 7 boxes with each box with 12 eggs. So multiply 7 by 12.
7 x 12 = 84
Now, they ate 8 eggs.
84 - 8 = 76 eggs
help pleassseeeeee nowwwwww
The density of matter is calculated using the formula p = ", where p is the density in grams per cubic centimeter, m
is the mass in grams, and V is the volume in cubic centimeters. If a sample of 105 grams of silver has a density of 10.5
grams per cubic centimeter, what is the volume of the sample, in cubic centimeters?
0.01
O 0.1
O
1
10
Answer:
Volume = 0.1 cu. cm.Step-by-step explanation:
p = m V
where p = 10.5 grams/cu. cm.
m = 105 grams
plugin values into the equation:
10.5 grams/cu. cm. = 105 grams V
V = 10.5 grams/cu. cm.
105 grams
V = 0.1 cu. cm.
Through (1,-4) Slope = -8
A. Rewrite the equation of the line in slope intercept form
B. Identify the slope and y intercept
(Show steps )
Answer:
Rewriting the equation in slope intercept form is: Y= -8x+4
Step-by-step explanation:
Im sure there's a faster way to solving this, but I'm just in 8th grade so I'm gonna apply what I know so far.
First of all, we know that our slope is -8... so we have y= -8x so far
From here, to find out y intercept I knew that our slope deals with all the points assigned, therefore we know that from -4 the change would be -8 so we get -12. We can also go the other way. This means that we plus 8 to get positive 4. (Side note: the change in our x value is 1 so we know that our y intercept is always dealing with a 0 in the x position) ex. (0,9) the y intercept would be 9.
To wrap things up, the slope is -8 and the y intercept is 4.
We then get Y= -8x+4
Hope this helps! :)
simplify the expression -3 ^ (-2/5)
Answer:
Exact Form:
15 over as a fraction
2
Decimal Form:
7.5
Mixed Number Form:
1 and 7 over 2 as a fraction
Step-by-step explanation:
Find the square root of 38 rounded to 3 decimal places
Answer:
6.1
Step-by-step explanation:
Answer:
6.164? idkr sorry
Step-by-step explanation:
find the line of the equation that passes through (3, -4) and is parallel to 3x + y + 2 = 0
leave your answer in the form of y = mx + c
hi
3x+y +2 = 0 so y = -3x-2
parrallel line has the same slope , so is -3x
then : -3 (3) +c = -4
-9 +c = -4
c = -4 +9
c = 5
so parallel is : y= -3x +5
Jackie worked 7.5 hours yesterday. If she earns $8.05 an hour, how much did she earn yesterday?
Answer:
$56.50
Step-by-step explanation:
I think. Something close to that.
Answer:
Hi there!
Your answer is:
Estimated to 60.38$
Step-by-step explanation:
7.5 hrs yesterday
8.05$ per hour
7.5hrs * 8.05dollars per hour = 60.375$
Estimated to 60.38$
Simplify 2(x+3)-2(x-6)
Answer:
18
Step-by-step explanation:
=(2)(x)+(2)(3)+(−2)(x)+(−2)(−6)
=2x+6+−2x+12
Combine Like Terms:
=2x+6+−2x+12
=(2x+−2x)+(6+12)
Answer:
2 (x+3) -2 (x-6) =18
Step-by-step explanation:
2 (x+3)= 2x+6
=2x+6-2 (x-6)
-2 (x-6)= -2x+12
=2x+6-2x+12
=2x-2x+6+12
6+12
=18
If ΔMTV is reflected across the y-axis, what are the resulting coordinates of point M?
(-2, -5)
(-2, -5)
(5, -2)
(5, -2)
(-2, 5)
(-2, 5)
(-5, 2)
(-5, 2)
The answer is A (-2,5).
HOPE IT HELPS (◕‿◕✿) SMILE!!Can somebody help me?
Answer:
you literally just write every single one
Step-by-step explanation:
for example: angle HVI angle IVJ
find the next terms
I, II, III, IV, V, ___, ___, ___, ___, ___
whats the conjecture?
______________
In a world problem, the rate of change is
A. the y-intercept
B. the initial value
C. the slope of linear equation
D. the y-value
Answer:
the y intercept is the right answer