Answer:
x=1
Step-by-step explanation:
3x-y=3
y=3-3x
9x-3y=9
9x-3(3-3x)=9
9x - 9 + 9x=9
9x + 9x=9 + 9
18x=18
x=18÷18
x=1
PLEASE HELP ME!!! HELP HELP HELP HURRY HURRY
The table below shows the fourth powers of different numbers:
Number (x)
1 ,-1 ,3,-3
Fourth power of the number (y) 1,1,81,81
Part A: Does the table represent y as a function of x? Justify your answer. (5 points)
Part B: The total cost f(x), in dollars, for renting a townhouse for x months is shown below:
f(x) = 875x + 750
What is the value of f(12) and what does f(12) represent? (5 points)
Answer:
Part A: yes it is a function because every input value (x) produces only one output value (y).
Note: It is still a function if different x values produce the same y value, in this case, x=1 and x=-1 produce the same y value 1, but it is NOT a function if y=1 and y=-1 have the same x value x=1.
Part B: when x=30: f(30)=17*30+50=560
if means that the cost of renting the truck for 30 hours is 560 dollars.
this help?
I’m a bit stuck on this question can I use a little help?
Answer:
x = 6; XZ = 27cm
Step-by-step explanation:
Since 4x + 3 is the whole line and the other two equations equal the full line, I will set up the equation as 4x + 3 = the sum of the other two lines since they are equal to each other.
4x + 3 = 8 + 2x + 7
4x + 3 = 15 + 2x
Isolate the variable
Subtract 2x from both sides
2x + 3 = 15
Subtract 3 from both sides
2x = 12
Divide 2 from both sides
x = 6
To solve for the full line, plug in 6 for x for the equation that represents the full line
4(6) + 3
24 + 3
27
At Grocery Mart, strawberries cost $2.98 for 2 lb. What is the unit rate
Answer: the unit rate is 1.49/1
or $1.49 per pound.
Step-by-step explanation:
Find the set of values of k for which the equation 2x2 - 10x + 8 = kx has no real root
Answer: k= -10x+12
Step-by-step explanation:
If the parabola of the form y = a(– h)^2 + k is always shifted horizontally h units and vertically k uni
its vertex is alwaYs
Answer:
im confused
Step-by-step explanation:
Answer:
the answer is (h,k)
Step-by-step explanation:
i just did the activity on edge
can someone plz help me
if a train travels 420 miles in 24 hours, what is its unit rate of travel
Answer:
The unit rate of travel is 17.5 miles per hour.
Step-by-step explanation:
Hope this helps!
The unit rate of train that travels 420 miles in 24 hours is 17.5 miles/hr.
What is speed?
Speed is defined as the rate of change of distance covered with respect to time. Mathematically -
Speed [S] = Distance [D] / time [T]
Given is a train that travels 420 miles in 24 hours.
Unit rate means how many miles did the train covered in 1 hour.
From the definition of speed, we can write -
Speed = Distance/time
Mathematically -
[S] = [D] / [T]
[S] = 420/24
[S] = 17.5 miles/hr
Therefore, the unit rate of train that travels 420 miles in 24 hours is 17.5 miles/hr.
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daniel is buying gas for his car gas costs 2.50 per gallon daniel typically spends around 30 to fill his gas tank, with a variance of up to $3 write an inequality to model this situation. please help asap
Answer:
The inequality should be 10.8 ≤ y ≤ 13.2
Step-by-step explanation:
When you graph this inequality you should place the two points on the number line (use closed circle because of the inequality sign) and the points should connect with a line segment.
The inequality expression to model the situation will be 10.8 ≤ y ≤ 13.2.
It is given that Daniel buys gas which costs 2.50 per gallon and typically he spends $30 to fill his tank.
We have to write an inequality to model this situation , if variance is $3.
What do you mean by variance ?
Variance is a measure of how data points differ from the mean i.e., 30 shows a variance of 3.
As per the question ;
Gas costs 2.5 per gallon and Daniel typically spends around $30 to fill his gas tank.
Variance given is $3.
So ;
The range will be ;
30 + 3 = 33
or
30 - 3 = 27
And the pending range of money spend (x) will vary as ;
27 ≤ x ≤ 33
So ;
No. of gallons (y) Daniel buys ;
27 ÷ 2.5 = 10.8 gallons
and
33 ÷ 2.5 = 13.2 gallons
So , range of gallon of gases will be , 10.8 ≤ y ≤ 13.2
Thus , the inequality expression to model the situation will be 10.8 ≤ y ≤ 13.2.
To learn more about inequality expressions click here ;
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Is 3/8 greater than 1?
Answer:
No
Step-by-step explanation:
3/8 is less than 1
For a fraction to be greater than 1 the numerator, the top number, would have to be larger than the denominator, the bottom number.
ex. 3/2 = 1.5
3/8 = 0.375
please help me my teacher already mad!!
Answer:
1. D
2. A
3. -1/3
4. 1/2
5. 2/3
Answer(s):
1. C. The graph has a slope of 0. (The slope is the change in the value of y over the change in the value of x--also known as rise over run--and there is no "slope" in this horizontal line. Think of slope like the steepness of a hill. If there is no steepness, then there is no slope.)
2. A. The graph decreases from left to right. (A negative slope is doing down a hill while positive is going up. So, if it's going down, then it's decreasing from left to right. Draw it out to better understand it if you're still confused.)
3. m = [tex]-\frac{1}{3}[/tex] (Slope is rise over run. If the y is going down, it's a negative change. If up, then positive. For the x, if it's going to the right--or forwards, if your think about it, then it's positive and negative when going towards the negative left side. In this graph, the y decreases by one and the x increases by three. x/y would result in -1 over 3.)
4. m = [tex]\frac{1}{2}[/tex] (If there are no plotted points for you, just pick two points from the graph! Find the change in y and the change in x, put it in the format m = y/x and simplify if needed.)
5. m = [tex]\frac{2}{3}[/tex] (Like in no. 4, find the changes in y over x. Then, simplify if needed. For example, the rise over run of two points I found was 4/6, which is 2/3.)
360 = 37.50x + 60 solve for x
hellppppp
90 + 12 = 6(15 + 12)
Yes
No
Answer:
Bruh, this is really easy. Answer is no.
Step-by-step explanation:
Do you not know what 6 times 15 is??
Answer: No
Step-by-step explanation:
90 + 12 = 102
6(15 + 12) = 162
hope this helps
1. Is Shawn correct? Does 10x + 30x equal 40x?
2. Is Sheila correct when she says you can't add the terms together because you don't know how much x is?
Answer:
Shawn is correct
Step-by-step explanation:
Shawn is correct:
10*x + 30*x = x*(10+30) = x*40 = 40xWhat is the output when the input is 5?
Answer:
d. 75
Step-by-step explanation:
5^2=25
25x3=75
Answer:
the output would be 75.
Step-by-step explanation:
f(x) = 5
f(5) = 3(5)^2
f(5) = 25 • 3
f(5) = 75
Use the regression calculator or another tool of your choice to create a scatter plot of the data for men, where the independent variable is the year since 2000 and the dependent variable is the number of people (in thousands). Take a screenshot of your scatterplot and paste it below. If your graph does not include labels, then include a description of what the axes represent.
Answer:
Step-by-step explanation:
The x-axis is the independent variable and it represent the number of years since 2000. The y-axis is the dependent variable and it represents the number of US citizens(in thousands) who earned a bachelor degree.
B:M(x) = 20.233x+516.067
Mr. Mustard said: "If you add the ages of my
two daughters, plus my age, the sum ls 70.
Mr. Mustard's daughters are 15 and 11 years
old. How old is Mr. Mustard?
Answer:
Mr. Mustard is 44 years old
Step-by-step explanation:
70 - (11+15) = 44
44 + (11+15) = 70
if ST = 12 and RT = 50 find RS. Use number line below
Answer:
I believe RS is 38.
Step-by-step explanation:
RT is 50, which is the total length of the number line. ST is 12, which is one part of the line. To find RS. I believe you have to subtract 50-12 to get the length of the missing part. which is RS.
50-12 = 38
Plz help i dont undertand
Answer:
7. b; 8. c; 9.a
Step-by-step explanation:
p--> q
Q7. inverse: ~p --> ~q
~(~r)-->~s is r-->~s
Q8. contrapositive: ~q --> ~p
~p --> ~t
Q9. converse: q --> p
k --> ~h
Answer:
life is hard do it urself
Step-by-step explanation:
a square tarp has an area of 64 square feet what is the length of one side of the tarp
Answer:
8
Step-by-step explanation:
So a rectangle that would be 4 cm high and 16 cm long has an area of 64 square cm. A square is a rectangle where the height and width are the same value, so you need to find a number, when multiplied by itself, will give you 64… which is to say the square root of 64. And that's 8. 8 x 8 = 64.
Find the value of x.
40° (6x + 2)°
Answer:
x = 8
Step-by-step explanation:
40 + 6x + 2 = 90 {Complementary angles}
Combine like terms
40+ 2 + 6x = 90
42 +6x = 90 {Subtract 42 form both sides}
6x = 90 - 42
6x = 48 {divide both sides by 6}
6x/6 = 48/6
x = 8
In the San Gabriel Mountains in California, lookout station Running Deer is 18 kilometers due west of station Lazy Bear. The bearing from Running Deer to a fire directly south of Lazy Bear is S38.4°E. To the nearest tenth of a kilometer, how far is the fire from Running Deer?
Answer:
29.0 kilometers
Step-by-step explanation:
From the figure attached,
Lookout station Running Deer is at A, Station Lazy Bear is at B and Fire is at C.
Bearing from Running deer to Fire is S38.4°E.
Therefore, m∠SAC = m∠ACB = 38.4°
Distance between the stations Running Deer and Lazy Beer = 18 km
From the given triangle ABC,
Sin(C) = [tex]\frac{\text{Opposite side}}{\text{Hypotenuse}}[/tex] = [tex]\frac{\text{AB}}{\text{AC}}[/tex]
Sin(38.4)° = [tex]\frac{18}{y}[/tex]
y = [tex]\frac{18}{\text{Sin}38.4}[/tex]
y = 28.978 ≈ 29.0 km
Therefore, distance between Fire and Running deer is 29 kilometers.
Bernie already has 13 plants in his backyard, and he can also grow 13 plants with every
seed packet he uses. How many seed packets does Bernie need to have a total of 65 plants
in his backyard?
seed packets
Answer:
5 seed packets
Step-by-step explanation:
65 divided by 13 is 5
add q to p then multiply 5 by the result
Answer:
q+5p
Step-by-step explanation:
q+px5=q+5p
What is the absolute value of the complex number -4 -√2i?
A. √14
B. 3√2
C. 14
D. 18
What are the coordinates of the image of vertex D after a reflection across the x-axis? (5, 3) (–5, –3) (–3, 5) (3, –5)
The coordinates of the image of vertex D after a reflection across the x-axis will be (5, 3). Then the correct option is A.
What is a transformation of geometry?A spatial transformation is each mapping of feature shapes to itself, and it maintains some spatial correlation between figures.
Reflection does not change the size and shape of the geometry. But flip the image.
The triangle ΔDEF is given below.
If the triangle ΔDEF is reflected across the x-axis, then the triangle will be named as ΔD'E'F'.
The vertex of the triangle D will be reflected into the first quadrant.
Then the coordinate of the vertex D' will be (5, 3).
The coordinates of the image of vertex D after a reflection across the x-axis will be (5, 3).
Then the correct option is A.
The graph is given below.
More about the transformation of geometry link is given below.
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Answer:
A) (5, 3)
Step-by-step explanation:
a quadratic equation that has a discriminant of -10
Answer:
x^2 + 4x + 6.5 = 0
Step-by-step explanation:
The discriminant = b^2 - 4ac = -10.
Lets let a = 1, then:
b^2 - 4c = -10
4^2 - 4(6.5)
= 16 - 26 = -10.
so b = 4 and c = 6.5.
- so we can write our equation as
x^2 + 4x + 6.5 = 0 would fit the requirement.
given: 6g+4a=7a
prove: g/a=1/2
Answer:
Step-by-step explanation:
6g + 4a = 7a
⇔ 6g = 7a - 4a
⇔ 6g = 3a
Divide both side by 6a
⇒ [tex]\frac{6g}{6a} = \frac{3a}{6a}[/tex] ⇔ [tex]\frac{g}{a} = \frac{1}{2}[/tex]
I hope this will help you.
What is 1/10 the value of 50
Answer:
5
Step-by-step explanation:
multiply 1/10 by 50
1/10×50= 5
Answer:
5
Step-by-step explanation:
1/10 x 50 = 5
How much would $100 invested at 6% interest compounded monthly be worth after 20 years ? Round your answer to the nearest cent
Answer:
$331.02
Step-by-step explanation:
Henri conducts an experiment to determine who likes peanut butter more: boys or girls. He has 25 girls and 25 boys taste some peanut butter and then rate it on a scale of 1 - 10 with 1 being cannot stand and 10 being tastes delicious. He finds that the girls had a mean of 7 with a range of 9 and the boys had a mean of 8 with a range of 5. Which statement is true?
Complete question is;
Henri conducts an experiment to determine who likes peanut butter more: boys or girls. He has 25 girls and 25 boys taste some peanut butter and then rate it on a scale of 1 - 10 with 1 being cannot stand and 10 being tastes delicious. He finds that the girls had a mean of 7 with a range of 9 and the boys had a mean of 8 with a range of 5. Which statement is true?
A) On average, girls like peanut butter more than boys.
B) The person who rated peanut butter the worst was a boy.
Reactivate
C) Girls varied more in how they liked peanut butter than the boys did.
D) There is not enough information to know if any of the above are true
Answer:
Option C) Girls varied more in how they liked peanut butter than the boys did.
Step-by-step explanation:
From the options the most appropriate will be option C which says: Girls varied more in how they liked peanut butter than the boys did..
This is because in the experiment, henri found out that the girls had a mean of 7 with a range of 9 and the boys had a mean of 8 with a range of 5.
The range of the girls responses are far higher than that of the boys.
So it means their ratings were more varied and not within similar ratings scale.
