Answer:
The solution of the system is (5, 20).
Step-by-step explanation:
y = 4x and 3x + 2y = 55 are simultaneous equations. To find the unknowns, we have to solve these equations simultaneously.
The first can be rewritten as
4x – y = 0.
Therefore, we have:
4x – y = 0
3x + 2y = 55
Multiplying the first equation by 2 all through, we have
8x – 2y = 0.
So we can now combine the second equation with the first multiplied by 2.
8x – 2y = 0
3x + 2y = 55
Adding these equations we have:
11x = 55
Divide both sides by 11 and we have
x = 5
Substitute x = 5 in equation 1, we have
4(5) – y = 0
y = 20.
Therefore, x = 5 and y = 20.
The solution of the system is (5, 20).
Twice the difference of a number and 4 is 3.
Derrick's Dog Sitting and Darlene's Dog Sitting are competing for new business. Derrick's Dog Sitting
charges $16 plus $7 per hour. Darlene's Dog Sitting charges $20 plus $5 per hour.
Part 1 out of 2
Complete and solve the equation that can be solved to find the number of hours for which the total cost
will be the same for the two services. In your equation, use x to represent the number of hours of dog
sitting
The equation is
The total cost will be the same for the two services at
hours.
Answer: both services will cost the same if it is for 3 hours service.
Step-by-step explanation: Hope this helps.
Define x: Let x be the number of hours
Derrick Dogs sitting:
Fixed charged=$12
Hourly change=$5
Total charge=12+5x
Darlene dog sitting:
Fixed charged=$18
Hourly change=$3
Total charge= 18+3x
Find the total number of hours so that both cost are the same:
12 + 5x = 18 + 3x
5x - 3x = 18 - 12
2x = 6
x = 3
ANSWER: both services will cost the same if it is for 3 hours service
Answer:
3 hours hon
Step-by-step explanation:
In the figure, angle E measures 54° and angle G measures 29°. What is the measurement of angle H?
A.
25°
B.
34°
C.
97°
D.
126°
Answer:
H=97 degrees or choice "C"
Step-by-step explanation:
Assuming this is a triangle:
All triangles contain 180 degrees, so:
180=E+G+H, or H=180-E-G
H=180-54-29
H=97
H=97 degrees or choice "C"
Which is the solution to the system of equation? (3x + y= 11 y= x + 3)
Answer:
(2,5)
Step-by-step explanation:
The intersection point of 3x+y=11 and y=x+3 is (2,5) on a graph.
PLEASE ANSWER
What is a ratio?
The quantitative and relatable relation between two amounts of goods or numbers shows the number of times one value contains or is contained within the other or one number/value with respect to the other number/value.
It is basically the relationship between two similar magnitudes with respect to the number of times the first contains the second.
Lets us understand this with the help of an example that the ratio of x to y can be written as
x: y x / yExample: the ratio of 1 to 2, written 1:2 or 1/2.
Know more about Ratio: https://brainly.com/question/12024093
What is the slope of the line graphed above?
Answer:
m=3, or in y-intercept form, y=3x-3
2.1834 around you to the nearest hundredth
Answer:
2.18 I think this is the answer sorry if it's not-
Answer:
2,1044 is the correct answere
if there are 5 people per 10000 buses how many will there be
Answer:
45 x 5 = 225 so 225 students altogether on 5 buses
Step-by-step explanation:
have a good day
Answer:
50,000 people.
Step-by-step explanation:
5 people on each bus.
10,000 buses total.
5 x 10,000 = 50,000
I need help with question b
Answer:
A triangular pyramid, otherwise known as a tetrahedron.
Step-by-step explanation:
I learned this in math class a long time ago. My major in college revolves around math and I tutor in geometry, so I memorized this type of stuff.
Glad to see that my hard work is paying off.
Plz help me i need it BRAINLIEST AND GOOD RATING IMMEDIATLY
Marcus and Lily are running at the school track. The graphs below represent the distance in miles each person has run as function of time in minutes. Select all the statements that are true based on the graphs shown.
what is the power to 2
A power of two is a number of the form 2n where n is an integer, that is, the result of exponentiation with number two as the base and integer n as the exponent.
Find the volume of the figure. Round to the nearest hundredth if needed.
Answer:
235.62 cubed yards
Step-by-step explanation:
Area of a cylinder = pi(r^2)*h
pi(5^2)*3 = 235.62
A circle has a diameter with endpoints
C(20, -21) and D(-20, 21). Determine the equation of the circle.
Answer:
x² + y² = 841
Step-by-step explanation:
Midpoint of diameter is a center of a circle.
Coordinates of midpoint are
( [tex]x_{1}[/tex] , [tex]y_{1}[/tex] )
( [tex]x_{2}[/tex] , [tex]y_{2}[/tex] )
( [tex]\frac{x_{1} +x_{2} }{2}[/tex] , [tex]\frac{y_{1} +y_{2} }{2}[/tex] )
d = [tex]\sqrt{(x_{2} -x_{1})^2 +(y_{2} -y_{1})^2 }[/tex]
Equation of a circle with center at (h, k) and radius "r" is (x - h)² + (y - k)² = r²
~~~~~~~~~~
C(20, 21)
D(- 20, 21)
( [tex]\frac{-20+20}{2}[/tex] , [tex]\frac{-21+21}{2}[/tex] ) = (0, 0)
d = [tex]\sqrt{(-20-20)^2 +(21+21)^2}[/tex] = √3364 = 58
r = [tex]\frac{d}{2}[/tex] = 29
x² + y² = 29²
x² + y² = 841
HELP ME PLEASE!!!!!!!!!!!!!!!! You have to figure out whether its undefined or zero
Answer:
It's an undefined slope
You go to the mall and your mom gives you $60 to spend on back to school clothes. There is a shirt you want for $80, but it is 25% off. Will you have enough money?
Answer:
yes you will
Step-by-step explanation:
25% off of 80 is 60
Pls pls help I don’t have time HELP ASAP. It also detects if it’s right or wrong.
Answer:
360
Step-by-step explanation:
hope this helps.
Jayden and Jacques went to the park to play. They were gone for an hour and fifteen minutes. They ot home at 12: 30 pm. What time did they leave for the park?
Answer:
11 : 15 am
Step-by-step explanation:
one hour before 12:30 pm is 11:30 am
15 minutes before 11:30 am is 11:15 am
Answer:
11:15
Step-by-step explanation:
To solve this question we basically have to subtract 1 hour and 15 minutes from 12:30.
1230
- 0115
-------------
11:15 a.m.
So the answer would be they left for the park at 11:15 a.m.
In conclusion, Jayden and Jacques left for the park at 11.15 a.m.
plz give me brainliest :)
HELP ME PLEASE!!! Asap
Solve for the proportion 42/21 = 6/d
QUICK HELP ME PLEASEEEEEEE. ONLY ONE HOUR LEFT! WILL MARK BRAIN...
Answer:
copy and paste it to math website
Step-by-step explanation:
I need help please :'v
Answer:
Slope = 2
Step-by-step explanation:
[tex]\frac{-8-8}{-6-2}=\frac{-16}{-8}=2[/tex]
Answer:
2
Step-by-step explanation:
using formula given y2-y1/x2-x18-(-8)/2-(-6)8+8/2+616/82What is an
equation of the line that passes through the points (-8,4) and (-8, 8)?
Answer:
X= -8
Step-by-step explanation:
for what value of x is d parallel to e?
A) 20
B) 25
C) 35
D) 37
Find the exact length of the third side.
39
36
The answer is 15 cm
39 cm, 15 cm, 36 cm
A rational numbers are ______ Integers
Answer:
A rational number is a fraction of 2 integers.
round 17.5 to the nearest 1
Answer:
18
Step-by-step explanation:
.5 is 5 4 and below round down 5 and up round up
Find WZY. (helpp fast)
Answer:
[tex]m\angle WZY = 24^\circ[/tex]
Step-by-step explanation:
Angles and Lines
The figure shows two triangles WXZ and WYZ. Considering:
* Angles WXZ and WYZ are right (90°)
* Sides XW and YW are congruent (red marker on both)
* They share the side WZ.
We can conclude they are congruent. Thus, angles XZW and YZW are congruent or have the same measure:
5x + 4 = 6x
Subtracting 5x:
4 = x
Or, x =4
Thus:
[tex]m\angle WZY = 6x = 24^\circ[/tex]
[tex]\mathbf{m\angle WZY = 24^\circ}[/tex]
One way to convert .9 to a percent would be to...
5 points
divide .9 by 100
multiply .9 by 100
add 100 to .9
subtract .9 by 100
6. Shawn is 22 years old. His cousin Marvin is 35% older than him. How old is Marvin?
7 points
27 years old
32 years old
25 years old
29 years old
7. Brianna went to diner for breakfast. The total bill was $38.50. The sales tax is 7%, and she decides to tip the waiter 25% of the original bill. What will be the total cost of the bill?
10 points
$50.83
$42.95
$48.72
$55.29
8. This year Monica scored a 70 on the FSA math test. Last year Monica scored a 45 on the FSA. What is the percent change in Monicas' FSA score?
7 points
62%
48%
56%
36%
Use the information below for questions 9 - 14
9. 12. If every item is discounted by 50%. What would be the total if you purchased a phone charger, tv, and a phone case? *
8 points
$93
$124
$111
$104
10. How much is a 40 inch television if the sales tax is 5.75%? *
8 points
$210.15
$211.50
$208.62
$207.98
11. If you buy a laptop bag and a phone charger, what would be the total cost if you have a 30% off discount coupon? *
8 points
$90
$80
$30
$70
12. If you decide to purchase a wireless keyboard and the tax is 9.5%. What would be the total amount of the tax?
8 points
$2.25
$3.27
$2.85
$2.46
13. Laptop bags are a new hot item!! So the owner decides to markup the price on laptop bags by 120%. What will be the new price of the laptop bags? *
8 points
$120
$108
$115
$127
14. Last year the 40 inch television was $350. What is the percent change in price for the television? *
7 points
63%
56%
28%
43%
Answer:
this doesn't make any sense but here's a pic while you wait for your answer.
Step-by-step explanation:
Question on the picture
Answer:
[tex]\mathtt{\huge\star{\pink{\underline{ option\: D }}}}\huge\star[/tex]
Activity 12.1 Tax, Tip, and Discount
What percentage of the car price is the tax?
car price
tax
Answer:
25%
Step-by-step explanation:
(1/4)x100=0.25x100=25, The tax is 25%
Chad has a bag with 2 mint sticks, 11 jelly treats, and 7 fruit tart chews. If he eats one piece every 4 minutes, what is the probability his first two pieces will be a jelly treat and a mint stick and represent as a percent to the nearest tenth if necessary?
Answer:
first you add all the candies together to get 20 in the bag
2+11+7=20
jelly treat:
now we divide 11 by 20 to get a decimal
11/20= .55
multiply .55 by 100 to change it to a percentage
.55*100=55
first part of answer: He has a 55% chance of getting a jelly treat
mint stick:
divide 2 by 20 to get a decimal
2/20=.1
change .1 to a percent by multiplying by 100
.1*100=10
second part of answer: he has a 10% chance of getting a mint stick
Step-by-step explanation:
