Answer:
Step-by-step explanation:
9x - 8 = 6x + 4
3x - 8 = 4
3x = 12
x = 4
Answer:
9x - 6x = 4 + 8
3x = 12
x = 12÷ 3
x = 4
Step-by-step explanation:
restamos las variables, verificamos que 9x es mayor que 6x por lo cual lo trasladamos al lado del 9x. Lo cual sería 9x menos 6x , por el lado del menos ocho y el cuatro, al menos ocho lo volvemos positivo lo cual da 4 más 8. y así
9x - 6x = 4 + 8
3x = 12
x = 12÷ 3
x = 4
WILL MARK BRANL:IEST NO FAKE ANSWERS I NEED ASAP
Answer:
(-5, 9)
Step-by-step explanation:
Flying against the wind, an alrplane travels 4700 kilometers in 5 hours. Flying with the wind, the same plane travels 9520 kilometers in 7 hours. What is the rate of the plane in still air and what is the rate of the wind?
Answer:
i think this
Step-by-step explanation:
Let Va = the velocity of the airplane
Let Vw = the velocity of the wind
When flying with the wind:
(Va+Vw)*(4 hours) = 4000
4Va + 4Vw = 4000
4Vw = 4000 - 4Va
Vw = 1000 - Va
When flying against the wind:
(Va-Vw)*(7 hours) = 4200 km
7Va - 7Vw = 4200
Substitute 1000-Va for Vw and solve for Va:
7Va - 7(1000-Va) = 4200
7Va -7000 + 7Va = 4200
14Va = 11200
Va = 800 km/hr
Rate of wind:
Vw = 1000 - Va = 1000 - 800 = 200 km/hour
a line has a slope of -3 and a y-intercept of 5. write the equation of the line in slope-intercept form and explain how you would use the slope and y-intercept to graph the equation?
Answer:
y = -3x + 5
Step-by-step explanation:
Since the y-intercept occurs at the point (0,5), you can use that and the point slope equation to find the equation.
This looks like y - 5 = -3 (x - 0);
Solving for y, you get y = -3x + 5;
To graph this equation you would put one point at (0,5), then use the slope to count down three and to the left one to find other points, or you could just plug in numbers for x to find their corresponding y values and plot it like that.
Hopefully this helps- let me know if you have any questions!
Simplify fully (2x-1)(2x+1)
In a lab experiment, 130 bacteria are placed in a petri dish. The conditions are such
that the number of bacteria is able to double every 8 hours. How many bacteria
would there be after 21 hours, to the nearest whole number?
Answer:
y = 802
Step-by-step explanation:
Measurement of missing angle?
Answer:
79 degrees
Step-by-step explanation:
180 - 73 - 28 = 79
Because a line is 180 degrees
H=17+x/6 solve for H step for step
Answer: h -18 =14
Step-by-step explanation:
You need to plug in -18 into the equation. So h(-18)=17+(-18)/6
h(-18)=17-3
h(-18)=14
2X^2 - 9x + 10 . solve by factoring area model (show work)
Step-by-step explanation:
2x²_4x_5x+10
2x(x-2)-5(x-2)
(2x-5)(x-2)
Answer question 11 for me.
Answer:
what is true about p and q is that they both equal 20.
Step-by-step explanation:
[tex]\frac{2*20}{5*20}[/tex]=[tex]\frac{40}{100}[/tex]
hope this helps!
have a great day :)
A researcher wants to know how homeowners in her state feel about home warranties. She obtains a list of 879 homeowners in her state, selects 300 of them at random, and emails a questionnaire to them. 64 questionnaires are returned. Of these, 80% stated that they believe that the current home warranty coverage needs to be completely overhauled. Classify the following groups as the population or the sample for this particular study.
a. all homeowners in the researcher's state
b. The 879 homeowners whose names were obtained
c. The 64 homeowners who returned the questionnaire
d. The 80% who stated that the current home warranty coverage needs to be completely overhauled
Answer:
a. The population
b. The accessible population
c. The sample
d. The statistic
Step-by-step explanation:
a. All the homeowners in the researchers state = The target population
b. The 879 homeowners whose name were obtained = The sample frame (accessible population)
c. The 64 homeowners who returned the questionnaire = Research participants (the sample), the subjects
d. The 80% who stated that the current home warranty coverage needs to be completely overhauled = The statistic (subset or part of the sample)
help please i’ll give extra points & brainlist:)!
help me on math pls plss I'm stuck agian:(((((
Answer:
the answer to a is 25, im unsure what B is.
Step-by-step explanation:
hope this helps!!!
Please help desperate
Answer: The first one is x=2
The second one is x=1
The third one is x=2
Step-by-step explanation:
Answer:hey i have the solution for you if you have a phone download socratic. Just take a picture of the entire thing and it will pull up the exact answers
Step-by-step explanation:
ill mark brainlist plss help
Answer:
Pentagon
Step-by-step explanation:
This is my choice. Since a baseball base is a quadrilateral when it has 4 bases, it should pentagon when it has an extra base..
21.8% all registered doctors are female if there were 51800 female doctors what is the total doctors that registered
Answer:
Step-by-step explanation:
21.8% of x = 51,800
0.218x =51,800
x= 51,800/0.218 = 237,615
Can the real number -6 be classified as a rational number?
yes, -6 is a rational number
E
Question 2/3
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Today, John ran 15 miles in 2 hours and 30 minutes. He wants to represent the relationship between the distance he ran in miles, and the time, in hours, as
proportional in order to examine his times at various distances. Write an equation that John can use to represent a proportional relationship between
distance, d, in miles, and time, t, in hours.
07:52
Answer:
lol dont know
Step-by-step explanation:
Which expression is equivalent to LaTeX: \left(7x^3\right)^2\left(x^8\right)^{^{\frac{1}{2}}}\:( 7 x 3 ) 2 ( x 8 ) 1 2?
What percent of a dollar is a nickel and a penny?
It is ______% of a dollar.
Answer:
6 %
Step-by-step explana
100 pennies makes a dollar... you just add 5 for the nickel and 1 fo the penny and it makes 6
What is the distance around a circle called?
A. Radius
B. Diameter
C. Circumference
D. Chord
Answer:
it is "c" (circumference)
Step-by-step explanation:
i hope this helps, have a good day
The distance around a circle called Circumference.
Option C is correct.
What is circumference?The circumference of any shape in mathematics defines the route or boundary that surrounds the shape. In other terms, the circumference is also known as the perimeter, and it aids in determining the length of any shape's contour. The perimeter and area of a circle are two important dimensions of a circle, as we all know.
The circumference of the circle, also known as the perimeter of the circle, is the measurement of the circle's boundary.
The area of a circle, on the other hand, defines the region it occupies.
If we open a circle and draw a straight line through it, the length of the line is the circumference.
As, The Circumference (or) perimeter of circle = 2πR
Thus, the distance around a circle called Circumference.
Learn more about Circumference here:
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Triangle Theorems I need helpppp
help me with this question if you could
PLS HELP
i said 45 but it was marked incorrect, im super confused
Answer:
60
Step-by-step explanation:
trangles always equal 180 degrees on the inside angles
180-75-45 = 60
Two brothers went shopping at a back to school sale where all shirts and shorts are the same price. The younger brother spent $175 on 7 new shirts and 7 pairs of shorts. The older brother purchased 6 new shirts and 7 pairs of shorts and paid a total of $165. Write the system of equations for this problem.
Answer:
Each shirt costs $ 10, while each short costs $ 15.
Step-by-step explanation:
Since two brothers went shopping at a back to school sale where all shirts and shorts are the same price, and the younger brother spent $ 175 on 7 new shirts and 7 pairs of shorts while the older brother purchased 6 new shirts and 7 pairs of shorts and paid a total of $ 165, to determine the price of each shorts and each shirt the following system of equations must be considered:
Shirt = X
Short = Y
7X + 7Y = 175
6X + 7Y = 165
7X - 6X + 7Y - 7Y = 175-165
X = 10
7x10 + 7Y = 175
70 + 7Y = 175
7Y = 175 - 70
Y = 105/7
Y = 15
Thus, each shirt costs $ 10, while each short costs $ 15.
Answer:
3x + 4y =108
7x + 5y =114
Hey please can someone help me and thank you
Step-by-step explanation:
first change meter to centimeters
2.5×100= 250
60+35+90=185
250 - 185= 65cm
65 is the final answer
meter to centimeters
2.5×100= 250
60+35+90=185
250 - 185= 65cm
= 65cm
Pleeease mark brainliest (it would make me super happy :))
Carry out the following division.
Answer:
1: 8a²
2: 9a²b²c²
Step-by-step explanation:
1: 48a³ ÷ 6a
48÷6 = 8
8a²
2: 72a³b⁴c⁵ ÷ 8ab²c³
72÷ 8 =9
9a²b²c²
Sry , I could only solve the first one
c. Add two cube numbers and
one square
number.
Answer:
Step-by-step explanation:
Add two cube numbers and
one square
number.
A flagpole casts a shadow that is 23 feet long. Jorge is 5.25 feet tall, and
while standing near the flagpole he casts a shadow that is 3 feet long. How
tall is the flagpole?
Answer:
5.5
7.5 =
h
23.5
7.5h = 129.25
h = 17.2
3
The flagpole is 17.2 feet long.
The measure of height of flagpole is 40.25 feet.
Given that, a flagpole casts a shadow that is 23 feet long.
What are heights and distances?Heights and Distances is a study about the applications of Trigonometry. It has many real-life applications, such as measuring the object’s height, depth of the object, the distance between two celestial objects etc. The formulas and the ratios of trigonometry are helpful in the study of heights and distances.
Jorge is 5.25 feet tall, and while standing near the flagpole he casts a shadow that is 3 feet long.
Let the height of the flagpole be x.
Now, tan θ=5.25/3 -------(I)
and tan θ=x/23 -------(II)
Equation (I)=(II), we get
5.25/3 = x/23
⇒ 3x=5.25×23
⇒ 3x=120.75
⇒ x=120.75/3
⇒ x=40.25 feet
Therefore, the measure of height of flagpole is 40.25 feet.
To learn more about the heights and distance visit:
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What is the answer for this quiestion
Answer:
What up why is there no question
Step-by-step explanation:
Please need help on this one
Answer:
it is 7
Step-by-step explanation:
so i did guess and check
i went two how many time something can go into 28 and i pick four so after you do 2(4)-1 you get 7
so then u add 7 +7 and u get 14 the i just put 7 for the other on b/c ur finding ur perimeter