Answer:
pq = 10
Step-by-step explanation:
-5x -2y= -9
8x + 8y= 24
Answer:
x=5
y=-17
Step-by-step explanation:
basically what I did was:
1) I multiplied the first equation by 4 , solved for x
2) I used the value of x that i found and substituted in one of the equations to find y
Answer: x=0 y=2
..................
please help!!! A pair of parallel lines are reflected. Which of these could be the result? thankyou!! (will mark brainliest
Answer:
C
Step-by-step explanation:
parallel lines never cross
What is the length of AB
d
Step-by-step explanation:
because that is the answer
Weird question but, whenever you divide by 1/4 or multiply by 4/1, will you always get the same answer.
(25 points if you answer this.)
Answer:
yep
Step-by-step explanation:
when you divide a fraction u can use the KCF method which is basically:
(keep) the first fraction the same
(change) the division sign in the middle to a multiplication sign
(flip) the second fraction
basically because you have to flip the 1/4 when you divide it, it'll be the same as a 4/1 anyways
The prime factorization of 16x5
Answer:
well first 16x5=80
2 * 2 * 2 * 2 * 5
Step-by-step explanation:
Hope that helps! :)
What is 49/50 equivalent to as a decimal and as a percent
The total cost of a compact disc, including a 6% sales tax, is $14.31.
What is the price before the tax?
$13.50
$13.45
$13.44
$15.17
The cost of a compact disc before the sale tax is $13.45. The correct option is B.
What is the percentage?The percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.
Given that the total cost of a compact disc, including a 6% sales tax, is $14.31.
The cost before the sale tax will be calculated as,
Cost = 14.31 x ( 1 - 0.06 )
Cost = 14.31 x 0.94
Cost = $13.45
To know more about percentages follow
https://brainly.com/question/24304697
#SPJ5
8th grade teachers and students from M.I.T went on a field trip to an zoo. Tickets
were $5.00 each for teachers and$3.50 each for students, and the group paid
$51.50 in total.A few weeks later, the same group visited a natural history
museum where the tickets cost $20.00 each for teachers and $8.50 each for
students, and the group paid $156.50 in total.
Find the number of teachers and students on the field trips.
A 4 Teachers and 9 Students
4 Teachers and 10 Students
3 Teachers and 9 Students
D None of the above
As there are multiple answers going with trial and error seems good in this case.
A
5.00 + 5.00 + 5.00 + 5.00 = 20.00
3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 = 31.5
20.00 + 31.5 = 51.5
B
5.00 + 5.00 + 5.00 + 5.00 = 20.00
3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 = 35.00
20.00 + 35.00 = 55.00
C
5.00 + 5.00 + 5.00 = 15.00
3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 + 3.50 = 31.5
15.00 + 31.5 =46.5
Knowing that for the first one all A,B, and C were wrong we can determine that D is the answer. But wait if I made one mistake and didn't understand if $156.5 is equivalent to $156.50 that would mean A is correct.
Always recheck your answers and good luck,
Jon
solve the inequality -5(x-7)<15 algebraically for x.
Answer:
4
Step-by-step explanation:
1. Divide both sides by -5
2. add 7 to both sides
pls help meh
6th grade math
Answer:
1,728%
Step-by-step explanation:
multiply baby
Two vertical posts stand side by side. One post is 8 feet tall while the other is 17 feet tall. If a 24 foot wire is stretched between the tops of the posts, how far apart are the posts?
Answer:
22 1/4 feet
Step-by-step explanation:
you can sketch this problem to be a right triangle with a hypotenuse of 24 feet and one leg of 9 feet (17 - 8).
use Pythagorean Theorem to find the base side, which represents the distance between the posts
a² + 9² = 24²
a² + 81 = 576
a² = 576 - 81
a² = 495
a = [tex]\sqrt{495}[/tex]
a = [tex]\sqrt{9}[/tex] · [tex]\sqrt{55}[/tex] = 3[tex]\sqrt{55}[/tex], which is approx 22.25
Answer:
about 22.25 feet
Step-by-step explanation:
You can think of it like a triangle, which you can see at the bottom
Then, use the pythagorean theorem, [tex]a^2 + b^2 = c^2[/tex].
you have a = 9 and c = 24, so
[tex]9^2 + b^2 = 24^2\\81 + b^2 = 576\\b^2 = 495\\b = \sqrt{495} = 3\sqrt{55} = about 22.25[/tex]
help i hate .math..........
6 divided by [tex]\frac{8}{9}[/tex] is the same as 6/1 multiplied by 9/8, which gives us 7 as the whole answer. therefore, I think number 1 and 4 are the correct selections
Simplify. -y -7x + 7y
The simplified expression is ___y - ____x.
Answer:
the simplified expression is: 6y-7x
Step-by-step explanation:
-y+7y= 6y
-7x
= 6y-7x
Help pleasee , find the length of the missing side . The triangle is not drawn to scale
Answer:
$*
Step-by-step explanation:
$=4 *=8
48
Please help someone pleaseeeeeeeeeeeeeeeeeeee
Answer:
first question: decrease - second question: 34
Step-by-step explanation:
first question: to find the mean, you need to add all of the numbers together and divide the sum of those by the amount of numbers you added together. in this question, it would be
73+79+96+84=332 -> 332/4=83 is the mean for the 1st set of numbers
(1) (2) (3) (4)
the question asks what happens after the next test score is added in, for this, you will do the same steps as before except you add in the 80 for her fifth test and then divide by 5 instead of 4, because you have another number being added.
73+79+96+84+80=412 -> 412/5=82.4 is the mean for the 2nd set of numbers
the second set of numbers, after the fifth test score is added in, is lower than the first set of numbers. therefore, the mean decreases
second question: same concept, except on a dot plot. a dot above a number means that there is one of those numbers that should be counted. this means since there are 2 dots above the 30, there are 2 30s being added to the rest of the numbers. in this dot plot, the numbers being added are
30+30+32+32+34+38+38+38=272 -> 272/8=34 is the mean
hope this helps!
can someone help me plssssss
Answer:
16.5
Step-by-step explanation:
the scale price is 120% . This is 75% of the original price. find the original price
Answer:
160%
Step-by-step explanation:
120% = 75%
1.6%=1%
160%=100%
therfore 160% is the original
Parker drove 8 miles in 15 minutes. If he drove at a constant rate, how far did he travel in one hour?
What's the coefficient of -C.
Answer:
here we have -C
The Coefficient of -C is -1
please help! find QPR
Answer:
m∡QPR = 25°
Step-by-step explanation:
solve for 'x':
8x + 7 + 9x + 16 = 40
17x + 23 = 40
17x = 17
x = 1
m∡QPR = 9(1) + 16
m∡QPR = 25°
A new watch costs $38.85, and a new bracelet costs $22.38. If Maddy buys both, how much does she spend?
Answer:
maddy will spend $61.23
Step-by-step explanation:
add $22.38 to $38.85
Robert has 6 pints of water to use on 5 plants.
If Robert gives each plant the same amount, how many pints of water will each plant get?
A. 5/6
B. 1
C. 1 1/5
D. 5
Answer
I think the answer is B)
Step-by-step explanation:
because I subtracted 6 and 5 because Robert has 6 pints of water and there's 5 plants
The table shows the relationship between c, the number of calories burned and f, the number of stairs climbed. What is the equation that best represents the relationship between f and c shown in the table?
Answer:
c=5f
Step-by-step explanation:
the number of calories burned is five per each flight of stairs
75 times 243
If your doing just for points I’ll report you
Simplify the polynomial by combining like terms. Make sure your anwser is in standard form: 4x + 7 - 8x (2) + 2x + 5x (2) - 11
Also, keep in mind that the numbers that are in parenthesis are the exponents.
Answer:
-3x² + 6x - 4Step-by-step explanation:
Simplify:
4x + 7 - 8x² + 2x + 5x² - 11 =x²(-8 + 5) + x(4 + 2) + (7 - 11) =-3x² + 6x - 4Answer:
[tex] \tt \huge \boxed{ \boxed{\color{silver} { - 3x}^{2} + 6x - 4}}[/tex]
Step-by-step explanation:
to understand thisyou need to know about:algebraalgebraic addition subtractionPEMDAStips and formulas:quadratic expression standard form:ax²+bx+corder of PEMDASparenthesesexponentmultiplication ordivisionadditionsubtractionleft to rightgiven:4x+7-8x²+2x+5x²-11to dosimplificationlet's do:[tex]step - 1 : define[/tex]
[tex] \sf 4x + 7 - {8x}^{2} + 2x + {5x}^{2} - 11[/tex]
[tex]step - 2 : simplify[/tex]
[tex] \tt \: rewrite : \\ \sf {8x}^{2} + {5x}^{2} + 4x + 2x + 7 - 11[/tex][tex] \tt \:combine \: like \: terms: \\ \sf { - 3x}^{2} + 6x + 7 - 11[/tex][tex] \tt \: substrak : \\ \sf { - 3x}^{2} + 6x - 4[/tex]therefore
we can see the expression is in standard form since a,b and c is -3,6 and -4
also let's justify it
substitute the value of a,b and c respectively
(-3)x²+(6)x+(-4)
-3x²+6x-4 (proven)
Select an equation of a parabola that has a vertex at (2,-1) and a zero at x=3 .
A. y=x² -4x+ 5
B. y=x² -4x + 3
C. y=x² + 4x -21
D. y=x² + 4x +3
Whats 2/3×(-3) this is multiplication
Answer: -2
your welcome :)
me podrían decir cuanto es 21/43+8/17 plis
Answer:
701/731
Step-by-step explanation:
Espero que ayude
puedes marcarme branliest??
Answer:
701
------- = 0.958960328
731
Step-by-step explanation:
21/43 + 8/17 es
21/43 + 8/17
21 8 701
---- + ----- = -----
43 17 731
Someone was shopping at a store that advertised 50% off everything. She found a new CD player originally priced at $76. What was the sale price?
Answer:
38
Step-by-step explanation:
How many solutions does 15x+12y=18 have
Answer: 2 or more.
X and Y could be anything, so there are at least two answers