Answers
Answer: What topic is this again??
Answer:
[tex]\begin{bmatrix}x+5y=-4\\ 2x+10y=-8\end{bmatrix}[/tex]
First, Isolate "x" for x+5y=-4= x=-4-5y
[tex]\begin{bmatrix}2\left(-4-5y\right)+10y=-8\end{bmatrix}[/tex]
Simplify
[tex]\begin{bmatrix}-8=-8\end{bmatrix}[/tex]
Therefore, the solutions are x=-4-5y
~
Related Questions
I need help with 2(4/3)x8x15+280919 we couldn’t use calculator
Answers
Answer:
281,319.005
Step-by-step explanation:
Because 2 and 4/3=3 and 1/3
Because since the numerator= 4 and the denomeyer is 3 we can add another whole number so 2 and 4/3 can add whole so 2 + 1=3 wholes with 1 left over so 3 1/3.
Next we do 3 1/3 x 8 which=26.667 also known as 26 2/3
Because 2/3=66.667.
Next we so 26 and 2/3 x 15=400.005
And last 400.005 + 280,919=281,319.005
Hope this helps have a great day:)
Haley and Sabrina are both training for a race.
Haley runs 4.2 miles each day.
Sabrina has been running as many miles each day as Haley.
Next week, Sabrina is going to increase the miles she runs each day by 25%.
Haley and Sabrina both train by running 6 days each week.
What is the total number of miles Sabrina will run next week to train for the race?
A.
5
B.
18.3
C.
21
D.
47.25
Answers
the answer is 47.25. trust me, its pretty obvious
A line passes through the points (3,16) and (6,19). Write a linear function rule in terms of x and y for this line.
Answers
Answer:
y=1x+13
Step-by-step explanation:
First find the slope of the line. Slope is (y2-y1)/(x2-x1). Plug in 19 for y2, 16 for y1, 6 for x2, 3 for x1. So (19-16)/(6-3) is 3/3 or 1. The slope of the line is 1.
take the equation y=mx+b and plug 1 in for the slope (m). Then plug in one set of points. Using (3,16) into y=1x+b, 16=1(3) + b. Solve for b. B is 13. So the linear equation is y=1x+13.
simplify each expression
5/4÷7/16
-10/13×5/11
9/11÷(-20/21)
-8/3÷(-5/18
Answers
Answer:
5/4÷7/16=20/7
-10/13 x 5/11=-50/143
9/11÷(-20/21)=-189/220
-8/3÷(-5/18)=-48/5
Step-by-step explanation:
hope this helped!!
At a bowling alley, there is a flat fee of
$
5.00
to rent shoes. In addition, it costs
$
1.25
for each game bowled.
Which equation shows the total cost (
c
) for the number of games (
g
) one bowls?
c
=
1.25
g
+
5
, c is equal to 1 point 2 5 g plus 5
c
=
1.25
g
+
5
g
, c is equal to 1 point 2 5 g plus 5 g,
c
=
5
g
+
1.25
, c is equal to 5 g plus 1 point 2 5
c
=
6.25
+
1.25
g
Answers
Answer:
Step-by-step explanation:
I don't understand the options as written, but the correct equation would be:
C = $5.00 + 1.25g,
where C is the total cost and g is the number of games played.
Solve 3/4 divided by 5/6 and then reduce the answer.
Answers
Answer:
(3/4) : (5/6) = 910 = 0.9. Spelled result in words is nine tenths.
Step-by-step explanation:
Answer:
9/10
Step-by-step explanation:
to divide by a fraction, multiply by its reciprocal.
3/4 x 6/5
cancel the common factor of 2
3/2 x 3/5
multiply 3 x 3 and 2 x 5
9/10
the fraction is already reduced to the final answer is 9/10.
Your teacher announced a 50-point math quiz for tomorrow. The quiz will have 15 questions with word problems worth 4 points each and some open response questions worth 3 points each. Find the number of each type of question. You may use any of the methods to solve. Check your answer.
Answers
Answer:
5 word problems(4points each) & 10 open (3 points each)
Step-by-step explanation:
O= open response
W= word problems
W+O =15
4W + 3O = 50
multiply the first by -3 to eliminate O
-3W -3O = -45
4W + 3O = 50
AD BOTH
W = 5 ( 5 questions word problems)
O= 10 ( 10 questions open response)
5x4 = 20
10x3 = 30
20 + 30 = 50 points
If $g(x) = 3x + 7$ and $f(x) = 5x - 9$, what is the value of $f(g(8))$?
Answers
Answer: 146
Step-by-step explanation:
A right pyramid has a regular hexagon as a base. The slant height is 20, and the perimeter of its base is 10. What is the lateral surface area of the pyramid
Answers
Answer:
100 unit^2
Step-by-step explanation:
lateral surface area of right pyramid = .5*p*s
p = perimeter
s = slant ht
LS = 100 unit^2
4 1/6 + 5 2/3
Enter your answer as a mixed number in simplest form
Answers
Answer:
above is the solution to the question
A cylinder has radius 2.5 meters. its volume is 50pi meters. Find its height.
Answers
Answer:
8
see image for work
Determine the value of x.
x feet
14 feet
48 feet
Answers
Answer:50 feet
142+482=502
196+2304=2500
Step-by-step explanation:
Which event has a probability of 50%?
getting heads when tossing a coin
randomly selecting a red tile from a bag with 1 red tile and 3 blue tiles
rolling a 1 when rolling a number cube with faces numbered from 1 to 6
randomly selecting a vowel from the letters in the alphabet
Answers
Answer:
getting heads when tossing a coin
Step-by-step explanation:
there are only 2 options, heads or tails, and there's an equal chance of getting both.
Answer: A) getting heads when tossing a coin
294 students went on a field trip. Five buses were filled and 14 students travelled in cars. How many students were in each bus?
Answers
Answer:
294 - 14 = 280 ÷ 5 = 56
In conclusion, there were 56 Students in each Bus.
0
Select all the equations that are equivalent to this equation.
1/4 (8X + 56) = 20
56 + 8X = 80
14 = 20 – 8x
2X + 14 =5
Answers
1/4(8x)+1/4(56)=20
2x+14=20
2x=20-14
2x=6
X=3
The average amount of ozone in several cities across Pennsylvania was correlated with the average number of asthma cases in those cities. What type of study is this
Answers
Answer:
Ecological study
Step-by-step explanation:
WILL RECEIVE BRAINLIEST
Mr. Campbell has a square garden with an area of 256 square feet. He wants to put a fence along 3 sides of the garden. How may feet of fencing will he need?
Answers
Answer:
48 feet of fencing!!
Step-by-step explanation:
hope this helps! God bless you! <33
Brice used a $100 bill to pay for a $65. 82 purchase. How much change should he get back?
Answers
100.00-65.82= 34.18
Factor the trinomial below.
x2 - 14x + 45
O A. (x-3)(x + 15)
O B. (x - 5)(x-9)
O C. (x-3)(x-15)
O D. (x - 5)(x + 9)
Answers
Answer:
The choice B. (x - 5)(x-9)
Which line is perpendicular to y=2x+3 and passes through the point (0, 5)
Question 2 options:
A) y=2x+5
B) y=5x+2
C) y=12x+3
D) y=−12x+5
Answers
Find the slope of a line going through (0, 4) and (-2, 2).
Answers
Answer:
slope = 1
Slope-intercept form: y = 1x + 4
Step-by-step explanation:
Plot the 2 points on a graph. Count the rise and the run from point A to point B. From point A, you go down 2 and to the left 2 to get to point B. Meaning, the slope is -2 over -2. (-2/-2)What is -2 divided by -2? Positive 1 From there you can use the point-slope formula and find the slope-intercept form.Hope this helps!
Help!?!?!?! Brady had 12 cupcakes, if he wanted 4 cupcakes piled in each group, how many groups were there??
Answers
Answer:
3 groups
Step-by-step explanation:
12/4 is 3
What must be a factor of the polynomial function f(x) graphed on the coordinate plane below?
Answers
Answer:
x + 6
Step-by-step explanation:
Edit:
A moderator mentioned my answer had a mistake: turned out the question posted was incomplete. The complete question should read:
"
What must be a factor of the polynomial function f(x) graphed on the coordinate plane below?
x – 6
x – 3
x + 1
x + 6
"
As shown in the same graph, f(x) cross the x-axis at x = -6, -3 and 0.
When a polynomial crosses the x-axis at x = a, (x - a) must be a factor.
So (x + 6), (x + 3) and x are factors of f(x).
Of the options, the correct answer is x + 6.
The complete question with verified answer is here: https://brainly.com/question/3875529
First let's check for zeros
Mark the x intercepts
-6,-3,0The factors are
x+6x+3xFactorise using suitable identity
1.a²+8a+16
Answers
Can u explain this 4 me?
Answers
=(0.04 -+ 0.1 +0.28) x100 /
= 0.42 x 100%
=42%
SOMEONE HELP ME URGENTLY!!
Answers
Step-by-step explanation:
a. 6:24
b. 1:4
c. 2 = 8, 3 = 12, 4 = 16, 5 = 20, 6 = 24.
d. 6:4 :: 24: X => X = (4×24)/6 => X = 16
e. 4 times
f. by proportion.
Factorise
x^2 - x
Thank you!
Answers
Answer:
x(x-1)
Step-by-step explanation:
[tex]x^{2} -x[/tex]
look for what both functions share, they both share an x,
which you can factor out,
x(x-1)
and you have your answer :)
need help with this problem.
Answers
Answer:
C) [tex]-\frac{47}{49}[/tex]
Step-by-step explanation:
By the cos double angle formula, we know [tex]\cos(2\theta)=2\cos^2\theta-1.[/tex] Substituting [tex]\cos \theta[/tex] into the formula, we get
[tex]\cos(2\theta)=2(-\frac{1}{7})^2-1\\~~~~~~~~~~=\frac{2}{49}-1\\~~~~~~~~~~=\boxed{-\frac{47}{49}}[/tex].
The answer is C.
Please help (math) I hate math-
Answers
Answer:
D
Step-by-step explanation:
There are 3 adults going because when there are 9 students, there is one adult, so that means that you divide 9 from 27. The answer is 3. The last equation matches that operation because 9n means 9 multiplied with n is the same as 27.
Answer:
option D
Step-by-step explanation:
9 students = 1 adult
therefore, 9n = 27
At a concert 20% of the audience members were teenagers. If there were 1800 people at the concert, how many of those people were teenagers ?
Answers
Answer:
360 of the people were teenagers
Step-by-step explanation:
To find percentages you need to divide the number by 100
∴ 20% of 1800
=20 ÷ 100 ×1800
=360
∴ there were 360 teenagers at the concert.