Answers
because 2y+y+10+50=180 so then combine like terms 3y+60=180 then subtract 60 from 180 you get 120 so then you divid 120 by 3 to get y by itself and so you get 40
to check it 2(40)+40+10+50=180
80+50+50=180
80+100=180
180=180✅
Related Questions
What is the alternator-to-engine drive ratio if the
alternator turns at 1125 rpm when the engine is idling
at 500 rpm?
Answers
Answer:
720
Step-by-step explanation:
hope it helps
Answer:
2.25 : 1
Step-by-step explanation:
Since the ratio is 1125 rpm for the alternator: 500 rpm for the engine, find the unit rate.
1125 : 500 Divide both sides by 500
2.25 : 1 For every turn of the engine, there are 2.25 turns of the alternator.
If this answer is correct, please make me Brainliest!
You earn 60 dollars for mowing 5 lawns how much do you earn for mowing 15 lawns
Answers
well 60/5=12
so you get $12 per yard
12*15=180
or you could notice that 5 goes into 15 3 times and then multiply 60*3 any way the answer is 180
You would earn $180 if you did 15 yards
An aeroplane is flying horizontally, directly towards the city of Melbourne at an altitude of 400 metres. At a given time the pilot views the city lights of Melbourne at an angle of depression of 1.5°. Two minutes later the angle of depression of the city lights is 5°. Find the speed of the aeroplane in km/h, correct to one decimal place.
Please include a diagram
Answers
A diagram and review of the basic trig functions will show that the distance d flown by the plane between observations is
d = 400 cot 1.5° - 400 cot 5° = 10700m = 10.7km
10.7km/2min * 60min/hr = 321 km/hr
Hope this helps
y varies directly with x. If x=6 when y=30, determine y when x=8.
Answers
Answer:
Y=40
Explanation:
Due to the nature of both X and Y varying directly, you can view the problem as a proportion. If x=6 and y=30, that must mean that when x=8 y must equal 40.
6:30 = 8:40
or
30/6= 5
Y/8= 5
Because they vary directly they are equivalent, and so multiply 8 by 5 and get 40.
Answer:40
Step-by-step explanation:
6 times 5 is 30
so 8 times 5 = 40
A package of balloons contains 5 green, 3 yellow, 4 red, and 8 pink balloons. Suppose you reach in the package and choose one balloon at random. What is the probability of choosing a balloon that is NOT GREEN?
Answers
Answer:
15/20 or 3/4 or 75%
Step-by-step explanation:
Answer:
75%
Step-by-step explanation:
first add up all the balloons: 5 + 3 + 4 + 8 = 20
then subtract the green: 20 - 5 = 15
now create your fraction: 15/20
simplify by 5: 3/4
change to percent : 3/4 = .75 x 100 = 75%
Consider the graph that represents the following quadratic equation.
y=-1/3(x+2)^2+5
--the graph opens:
-downward
-upward
--the vertex of the graph is:
-(2,5)
-(-2,-5)
-(-2,5)
--the axis of symmetry of the graph is:
-x=2
-x=-2
Answers
Answer:
Part 1) The graphs open downward
Part 2) The vertex is the point (-2,5)
Part 3) The axis of symmetry is x=-2
Step-by-step explanation:
step 1
we have
[tex]y=-\frac{1}{3}(x+2)^2+5[/tex]
This is a vertical parabola open downward (because the leading coefficient is negative)
The vertex is a maximum
step 2
The quadratic equation is written in vertex form
[tex]y=a(x-h)^2+k[/tex]
where
(h,k) is the vertex
so
In this problem
The vertex is the point (-2,5)
step 3
The equation of the axis of symmetry of a vertical parabola is equal to the x-coordinate of the vertex
The x-coordinate of the vertex is -2
therefore
The axis of symmetry is x=-2
will give brainiest to the first person who answers correctly!!!!
Answers
Answer:
Option B
Step-by-step explanation:
Its the same because its basically just like stacking the same shape over and over to make a prism
Answer:
answer is B your welcome:)
Step-by-step explanation:
PLEASE ANSWER QUICK! A police officer is estimating the distance from one side of a street to the other. The actual distance is 13.8. The police officer's estimate is 14. Find the absolute error and the percent error of the police officer's estimate. If necessary, round your answers to the nearest tenth
Answers
Answer:
The absolute error is 0.2
The percent error is 1.45
Step-by-step explanation:
Please kindly check the attached for explanation
The absolute error of the police officer's estimate is 0.2, and the percent error is approximately 1.5%
Explanation:In Mathematics, absolute error is determined by the absolute value of the difference between the estimated value and the actual value. Therefore, the absolute error in this case is |14 - 13.8| = 0.2.
Percent error, on the other hand, is calculated by first finding the absolute error, then dividing the absolute error by the actual measurement, and finally multiplying the result by 100% to turn it into a percentage. So in this case, the percent error is given by (0.2 / 13.8) * 100 = 1.45%. Since we should round it off to the nearest tenths, the percent error will be roughly 1.5%.
Learn more about Error Calculation here:https://brainly.com/question/31825365
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Some of the students at Kahlo Middle School like to ride their bikes to and from school. They always ride unless it rains. Let d be the distance in miles from a student's home to the school. Write two different expressions that represent how far a student travels by bike in a four week period if there is one rainy day each week.
Answers
Answer:
32d
Step-by-step explanation:
-The students ride their bikes to and from school every day. The distance is thus;
[tex]d_t=2d[/tex]
-Taking that there are 5 school days per week and that it rains in one per week. the total number of days is:
[tex]Days=Days \ per \ week \times \ number \ of \ weeks\\\\=(5-1)\times 4\\\\=16\ days[/tex]
Now, we multiply the distance per day by the total number of days:
[tex]Distance, D=2d\times 16\\\\=32d[/tex]
Hence, the total distance in a 4-week period is expressed as 32d ( where d is the distance from home to school).
what is 25x10^9 in standard form
Answers
[tex]25*10^9=25*100000000=2500000000[/tex]
NEED HELP ASAP A survey was conducted with high school students in
each grade to see how many prefer math or science.
Some of the data are shown below.
Which statement is true about the joint frequencies in
this table?
40
11 | 12 |
Total
O Twenty-three 9th graders and fifteen 11th graders
prefer math.
O Fourteen 11th graders prefer math and eight 10th
graders prefer science.
O Thirty-five 12th graders prefer math and nine 10th
graders prefer science.
Twenty-three 9th graders and thirty-two 12th
graders prefer math.
Math
18
90
Science 40
15
95
Total
63
26
29
67
185
Answers
Question:
a. Twenty-three ninth graders and fifteen eleventh graders prefer math.
b. Fourteen eleventh graders prefer math and eight tenth graders prefer English.
c. Thirty-five twelfth graders prefer math and nine tenth graders prefer English.
d. Twenty-three ninth graders and thirty-five twelfth graders prefer math.
e. Eighteen tenth graders prefer English and fourteen eleventh graders prefer math.
Answer:
Therefore, the correct options are;
b. and d.
Step-by-step explanation:
Here we have a table with blank boxes and totals from which we can fill the boxes;
For the 12th graders, we have a total of 67 pupils with 32 preferring English, therefore the number of the 12th graders that prefer math is 67 - 32 = 35 pupils
Similarly for the 11th graders we have total pupils = 29 with 15 preferring English, therefore the number of the 11th graders that prefer math is 29 - 15 = 14 pupils
Also for the 10th graders we have total pupils = 26 with 18 preferring math, therefore the number of the 11th graders that prefer English is 26 - 18 = 8 pupils
Finally for the 9th graders, we have a total of 63 pupils with 40 preferring English, therefore the number of the 9th graders that prefer math is 63 - 40 = 23 pupils
From the above, the correct option is
Answer:
b only
Step-by-step explanation:
Use Appropriate Tools
1) A group of students were
on a school bus. At the last
stop, the bus picked up 16
more students. The bus
arrived at school with a
total of 25 students. How
many students were on the
bus before the last stop?
Solve this problem any way
you choose.
Answers
Answer:
9
Step-by-step explanation:
just subtract 16 from 25
I need to find the line of the slope that passes through the points (-2,3) and (-14,-5) answer in simplest form
Answers
Hope this will help u....:)
los numeros primos menores que 15
Answers
Answer:
2, 3, 5, 7, 11, 13,
Answer: 1, 3, 5, 11, 9, 7, 13
Step-by-step explanation:
Odd numbers can't be divided by two.
Even numbers can be.
Find the slope of the line through (-9,-10) and (-2,-5).
A. -5/7
B. 7/5
C. 5/7
D.-7/5
Just need help with this thank you.
Answers
Hope this will help u...:)
Look at the attached picture...!!
The circumference of a circle is 47 m. Find its diameter, in meters.
Answers
= piD
D= C/pi
= 47/pi
= 14.96 (to 2 decimal places)
−3x−4y=4
−5x+y=2
Is (2,10)left parenthesis, 2, comma, 10, right parenthesis a solution of the system?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Yes
(Choice B)
B
No
Answers
Substituting the solution (2,10) into both equations of the system shows that it does not satisfy either equation, hence it is not a valid solution.(Choice B.No)
Explanation:To verify the solution of the system of equations, we can substitute the ordered pair (2,10) into both equations. Let's do this:
In the first equation, -3x - 4y = 4, we substitute x = 2 and y = 10. This gives us -3*2 - 4*10 = -6 - 40 = -46, which is not equal to 4.In the second equation, -5x + y = 2, we substitute x = 2 and y = 10. This gives us -5*2 + 10 = -10 + 10 = 0, which is not equal to 2.Since the ordered pair (2,10) does not satisfy either of the two given equations, we can say that (2,10) is not a solution of the system of the equations.
Learn more about System of Equations here:
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The point (2,10) is not a solution to the system of equations -3x - 4y = 4 and -5x + y = 2, as it does not satisfy either equation when substituted.
To determine if the point (2,10) is a solution of the given system of equations:
-3x - 4y = 4
-5x + y = 2
we need to substitute x=2 and y=10 into each equation to see if the left-hand side equals the right-hand side.
For the first equation:
-3(2) - 4(10) = -6 - 40 = -46
which does not equal 4, therefore the point (2,10) is not a solution to this equation.
For the second equation:
-5(2) + (10) = -10 + 10 = 0
which does not equal 2, so (2,10) is also not a solution to the second equation.
Since (2,10) does not satisfy either equation, we can conclude that:
(Choice B)
No, (2,10) is not a solution to the system of equations.
what is the vaule of the expression x + y + - y
When x= -1 and y = 3
Answers
Answer:
[tex]x + y - y \\ - 1 + 3 - 3 \\ = - 1[/tex]
Answer:
-1
Step-by-step explanation:
This is a substitution question
The given equation is x+y+(-y)
And x is said to be-1,y=3
So let's solve
x+y+(-y)
Open the bracket first
x+y-y
So let's substitute
-1+3-3
-1+0
=-1
Therefore the final answer is-1
What are the roots of the quadratic function in the graph?
Answers
Answer:
The roots would be -4 and 2.
Step-by-step explanation:
Roots are always going to be where the graph crosses the x axis. In this case, the graph crosses the x axis at -4 and 2.
Hence, the roots are -4 and 2.
A circle passes through point (−2, −1) and its center is at (2, −1). Which equation represents the circle?
A) (x − 2)2 + (y + 1)2 = 16
B) (x − 2)2 + (y − 1)2 = 16
C) (x + 2)2 − (y + 1)2 = 20
D) (x − 2)2 + (y + 1)2 = 20
Answers
Answer:
A) (x − 2)2 + (y + 1)2 = 16
please give me brainliest
Step-by-step explanation:
center: (2, −1)
(x − 2)2 + (y + 1)2
radius: 4
4^2 = 16
Solve the equation
[tex] {x}^{2} = 196[/tex]
Show your work and explain your steps.
Answers
because you have to a square 196
In a class of 18 children, 13 have pet dogs at home, 11 have pet cats, and 8 have both. How many kids do not have four-legged pets at home?
Answers
Answer:
2 people
Step-by-step explanation:
8 have both that means that of the 11 people that have cats 3 have only cats and of the 13 that have dogs 5 only have dogs therefore 2 people don't have four-legged animals at home
Answer:
2
Step-by-step explanation:
it starts out with 18 students, 24 pets in total. -16 for the dogs and cats, to lead up to 8, and 10 students left after subtracting 8 for how many students don't have a pet at home. So 2 students shouldn't have four legged pets left after subtracting the rest. (this is my answer, it's probably wrong, i think you should wait for more,)
An large pizza has a diameter of 14 inches and is cut into 6 equal pieces . Find the area of 2 pieces , rounded to the nearest hundredth
Answers
Answer
51.312in^2
hope this helps...
The function f(x) = 2* is translated left 3 units and down 2 units. Which is the equation of the translated function?
g(x) = 2x-3-2
g(x) = 2x -2-3
g(x) = 2x - 2 + 3
g(x) = 2x + 3-2
Answers
Answer:
g(x) = 2^(x+3) -2
Step-by-step explanation:
To translate a function f(x) right h units and up k units, it becomes ...
g(x) = f(x -h) +k
Here, your translation is (h, k) = (-3, -2), so the function becomes ...
g(x) = f(x +3) -2
g(x) = 2^(x+3) -2 . . . . matches the last choice
Answer:
D.
Step-by-step explanation:
Find the area of a regular hexagon with an apothem of 15cm
Answers
Final answer:
The area of a regular hexagon with an apothem of 15 cm is approximately 1166.55 cm².
Explanation:
The area of a regular hexagon can be found by using the formula:
Area = (3 x apothem x side length) / 2
In this case, the apothem is given as 15 cm. We need to find the side length to calculate the area. The side length can be found using the formula:
side length = 2 x apothem / tan(180° / 6)
Using a calculator, we can find that the side length is approximately 25.98 cm. Plugging in the values into the area formula, we get:
Area = (3 x 15 cm x 25.98 cm) / 2 = 1166.55 cm²
17. a) Ula jest dwa razy młodsza od Oli i o 4 lata starsza od Ali. Razem te trzy
dziewczynki mają 24 lata. Ile lat ma każda z nich?
b) Tata Zosi jest od niej 3 razy starszy, a Zosia jest od niego młodsza o 30 lat.
Ile lat ma Zosia?
c) Julek i Asia są w sumie o 6 lat starsi od Michała, ale każde z nich z osobna
jest od niego młodsze: Julek o 7 lat, Asia o 2 lata. Ile lat mają wszyscy razem?
Daje Naj za odpowiedź daną za godzinę maks
Answers
Answer:
Part 17)
Ula's age is 7 years
Ola's age is 14 years
Ali's age is 3 years
Part 18) Zosia's age is 15 years
Part 19) All together are 36 years old
Step-by-step explanation:
The question in English is
17. Ula is twice as young as Ola and four years older than Ali. Together these three girls are 24 years old. How old is each of them?
18. Zosia's father is 3 times older than her and Zosia is 30 years younger than him.
How old is Zosia?
19. Julek and Asia are 6 years older than Michael, but each of them separately is younger than him: Julek by 7 years, Asia by 2 years. How old are they all together?
Part 17)
Let
x ----> Ula's age
y ---> Ola's age
z ---> Ali's age
we know that
Ula is twice as young as Ola
[tex]y=2x[/tex] ----> equation A
Ula is four years older than Ali
[tex]x=z+4[/tex]
[tex]z=x-4[/tex]----> equation B
Together these three girls are 24 years old.
so
[tex]x+y+z=24[/tex] -----> equation C
substitute equation A and equation B in equation C
[tex]x+2x+(x-4)=24[/tex]
solve for x
[tex]4x=24+4\\4x=28\\x=7[/tex]
Find the value of y
[tex]y=2(7)=14[/tex]
Find the value of z
[tex]z=7-4=3[/tex]
therefore
Ula's age is 7 years
Ola's age is 14 years
Ali's age is 3 years
Part 18)
Let
x ----> Zosia's father's age
y ----> Zosia's age
we know that
Zosia's father is 3 times older than Zosia.
so
[tex]x=3y[/tex] ----> equation A
Zosia is 30 years younger than him.
so
[tex]y=x-30[/tex] ----> equation B
substitute equation A in equation B
[tex]y=3y-30[/tex]
solve for y
[tex]3y-y=30\\2y=30\\y=15[/tex]
therefore
Zosia's age is 15 years
Part 19)
Let
x ----> Julek's age
y ----> Asia's age
z ----> Michael's age
we know that
Julek and Asia are 6 years older than Michael
so
[tex]x+y=z+6[/tex] ----> equation A
Julek is 7 years younger than Michael
[tex]x=z-7[/tex] ----> equation B
Asia is 2 years younger than Michael
so
[tex]y=z-2[/tex] -----> equation C
substitute equation B and equation C in equation A
[tex](z-7)+(z-2)=z+6[/tex]
solve for z
[tex]2z-z=6+9\\z=15[/tex]
Find the value of x
[tex]x=15-7=8[/tex]
Find the value of y
[tex]y=15-2=13[/tex]
Adds the ages
[tex]x+y+z=8+13+15=36\ years[/tex]
therefore
All together are 36 years old
76.98 divided by 45.2
Answers
Answer:
1.7030973451327434
Step-by-step explanation:
Answer:1.7039735
Step-by-step explanation:
PLZZ ANSWER THIS AS SOON AS POSSIBLE!!!!
Answers
Answer:
y = -9.3
if they are complementary it is 45 degrees
if they are supplementary it is 90 degrees
Step-by-step explanation:
-12.7 = y -3.4
-12.7 + 3.4 = y -3.4 + 3.4
-9.3 = y
complementary angles equal to 90 degrees
supplementary angles equal to 180 degrees
vertical angles have same degrees
so 90/2= 45
180/2 =90
maybe -16.1
and how are you sending the photo
Which expression is equivalent to 18c-6d? A: 2(9c-6d)
B: 3(6c+2d)
C: 2(9c-3d)
D: c(18-6d)
Answers
Answer: answer is C because if you do 2x9 abd 2x3 you 18c-6d and you cant subtract thise cause they have different variables
Step-by-step explanation:
Answer:
[tex]6(3c-d)[/tex] or [tex]3(6c - 2d)[/tex]
Step-by-step explanation:
Step 1: Factor out the GCF
The GCF for 18c and 6d is just the number 6.
[tex]18c - 6d[/tex]
[tex]6(3c - d)[/tex]
Or... you can pull out a 3
[tex]18c-6d[/tex]
[tex]3(6c-2d)[/tex]
Answer: [tex]6(3c-d)[/tex] or [tex]3(6c - 2d)[/tex]
Jamal traveled 80 miles in 114 hours. Which expression gives Jamal's speed in miles per hour?
options:
1 1/4 x 80
1 1/4 divided by 80
80/1 1/4 (Fraction)
1 1/4/80 (Fraction)
Answers
Answer:
80/1 1/4 (Fraction)
Step-by-step explanation:
[tex]speed = \frac{distancs}{time} \\ \\ \hspace{29pt}= \frac{80}{1 \frac{1}{4} } mph[/tex]