Answer:
91
Step-by-step explanation:
Rewrite the sides as ratios
s/28=78/24, solve for s
s/28=39/12
s=39/12*28
s=91
A model of an airplane is 6 inches long. If the actual airplane is 45 feet, find the scale of the model.
Answer:
A
Step-by-step explanation:
Divide both numbers by 6. 1 inch per 7.5 ft.
x²-gx
Which shows all the critical points for the inequality 3-5 <0?
Answer: will be = -2<0
Step-by-step explanation:x2 -gx=3-5<0=-2<0
What is the slope of the graph shown below?
Answer:
B: -2
Step-by-step explanation:
Find the slope by counting how many times it would take to reach a point. For example, (0,1). Or use you could use the slope formula by finding two coordinates
can someone help me with this I need help
PLEASE HURRY ITS TIMED 20 POINTS!!!What is the y-coordinate of the point shown in the graph?
Answer:
-7
Step-by-step explanation:
the vertical line is the y
Round 5.955 to the nearest tenth.
Answer:
6.
Step-by-step explanation:
To round 5.955 to the nearest tenth consider the hundredths’ value of 5.955, which is 5 and equal or more than 5. Therefore, the tenths value of 5.955 increases by 1 to 0.
Answer:
6.0
Step-by-step explanation:
Two cars are traveling on the interstate. The blue car is traveling at 65 miles per hour.
The red car is traveling at 45 miles per hour AND is 50 miles ahead of the blue car.
How long will it take for the blue car to catch up with the red car?
y = 65x
y = 45x + 50
Answer:
2 1/2 hours
Step-by-step explanation:
use substitution method:
65x = 45x + 50
20x = 50
x = 5/2
Which side lengths represent the sides of a right triangle?
A)
1, 1, 2
B)
2,3,5
C)
5, 12, 13
D)
7,23,25
Answer:
b dhrjdhfjrjribdhdjdiekw
(pls help asap)
what is 2x+5x^2-3x-10 + x+1x+2?
SHOW ALL STEPS
Answer:
x - 8 + 5x^2
Step-by-step explanation:
Group like terms
2x - 3x + x + 1x -10 + 2 + 5x^2
-x +2x -8 +5x^2
x - 8 + 5x^2
For every 1 litre of water used 150ml of sucrose and 600ml of saline solution is used
Question:
For every 1 litre of water used to make a medicine, 600 ml of sucrose and 150ml of saline solution are used.
Express the amount of water, sucrose and saline solution needed as a ratio in its simplest form.
Answer:
[tex]Water : Sucrose : Saline = 20 : 3 : 12[/tex]
Step-by-step explanation:
Given
[tex]Water = 1L[/tex]
[tex]Sucrose = 150mL[/tex]
[tex]Saline= 600mL[/tex]
Required
Express as a ratio to the simplest form
First convert the volume of water to mL
[tex]Water = 1L[/tex]
[tex]Water = 1 * 1000mL[/tex]
[tex]Water = 1000mL[/tex]
Express as ratio:
[tex]Water : Sucrose : Saline = 1000mL : 150mL : 600mL[/tex]
[tex]Water : Sucrose : Saline = 1000 : 150 : 600[/tex]
Divide through by 10
[tex]Water : Sucrose : Saline = 100 : 15 : 60[/tex]
Divide through by 5
[tex]Water : Sucrose : Saline = 20 : 3 : 12[/tex]
The ratio can not be further simplified
How did you do? Rate your work on a scale of 1 to 5, with 5 as the highest score. Then write a brief evaluation of your work below. Note what you learned and what challenged you.
Answer:
i think you have to explain what we did work on...
Step-by-step explanation:
Answer: just say what comes up to your head it works the best
Step-by-step explanation:
You have budgeted $4,800 for a company to complete guest satisfaction surveys for you. They charge $1,800 + $6 per respondent. How many respondents will you be able receive for the money paid?
Answer:
6
Step-by-step explanation:
There are 500 respondents will you be able receive for the money paid.
What is mean by expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
We have to given that;
The budgeted for a company to complete guest satisfaction surveys for you is, $4,800.
And, They charge $1,800 + $6 per respondent.
Now,
Let Number of respondents will you be able receive for the money paid is, x
Hence, We can formulate;
⇒ $1800 + $6x = $4800
⇒ 1800 + 6x = 4800
⇒ 6x = 4800 - 1800
⇒ 6x = 3000
⇒ x = 500
Thus, There are 500 respondents will you be able receive for the money paid.
Learn more about the mathematical expression visit:
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It could be more than 1 and please help me please
Answer:
A,0
Beacuse 8×0=0
Meg is a veterinarian. She found that 20% of the dogs she saw this week were boxers. Steve is also a veterinarian. He found that 2 or 25% of the dogs he saw this week were boxers. Does each person need to find the part, the whole, or the percent?
(help?)
Alan and Bree are taking a keyboarding test. The tables show the number of words they type over time, and the numbers of mistakes they make
Mistakes
Alan's Typed
Words
5
10
Time
(seconds)
6
12
2
4
6
18
15
20
8
Mistakes
Bree's Typed
Words
9
Time
(seconds)
8
3
6
18"
16
9
27
36
24
32
12
Who makes mistakes at a faster rate? Explain using ratios.
Select the answers from the drop-down lists to correctly complete the sentences.
Answer:
Bree does
Step-by-step explanation:
help me please i need a good grade
Answer:
its 3 the answer is 3.
Step-by-step explanation:
because I did this before thank you ,its 3.
Answer:
Three fifths
Step-by-step explanation:
Since 10 was divided by 2 to get 5,
you just do the same to the top half of the fraction.
So when you divide 6 by 2, you get 3.
So it is equal to 3/5, or three fifths.
And 3/5 is equivalent to 6/10
what happens to the kinetic energy of the particles in a substance when it is heated
Answer:
Step-by-step explanation:
The kinetic theory of matter can be used to explain how solids, liquids and gases are interchangeable as a result of increase or decrease in heat energy. When an object is heated the motion of the particles increases as the particles become more energetic
What is the volume of the sphere? Round your answer to the nearest tenth
Answer:
523.6 ft
Step-by-step explanation:
Answer:
523.6 ft
Step-by-step explanation:
A. 45
B. 50
C.39.5
D. 47.5
Please need the answer
In the expression 3x - 4y + z, what is the
coefficient of z?
Answer:
1
Step-by-step explanation:
The coefficient is the number in front of a variable. There is a hidden coefficient of 1 in front of z. The reason it is not shown is because any number multiplied by 1 is just that number so showing the 1 is redundant.
The coefficient of z in the expression 3x- 4y +z is 1.
What is expression?A mathematical operation such as subtraction, addition, multiplication, or division is used to combine terms into an expression. In a mathematical expression, the following terms are used:
An absolute numerical number is referred to as a constant.Variable: A symbol without a set value is referred to as a variable.Term: A term can be made up of a single constant, a single variable, or a mix of variables and constants multiplied or divided.Coefficient: In an expression, a coefficient is a number that is multiplied by a variable.Given:
3x - 4y + z
As, we know a coefficient is a number that is multiplied by a variable.
So, the coefficient of x is 3, coefficient of y is 4 and coefficient of z is 1.
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146 is 2% of what number? If necessary, round your answer to the nearest hundredth.
0.01
Yes
Answer: 7,300
Step-by-step explanation:
146 = 2%
73 = 1%
7,300 =100%
Find the exact value of the following limit: lim x approaches 0 e^6x... check photo above.
Substituting x = 0 directly gives the indeterminate form 0/0, so you can use l'Hopital's rule (and you'll have to do that twice):
[tex]\displaystyle\lim_{x\to0}\frac{e^{6x}-6x-1}{x^2}=\lim_{x\to0}\frac{6e^{6x}-6}{2x}=\lim_{x\to0}\frac{36e^{6x}}2[/tex]
The limand is continuous everywhere, so you can plug in x = 0 to get 36•1/2 = 18.
Solve the following system of equations graphically on the set of axes below.
y = 2x – 2
x +y = 4
Plot two lines by clicking the graph.
Click a line to delete it.
HELP ASAP
Answer: The solution is (2, 2)
Step-by-step explanation:
We have the system of equations:
y = 2*x - 2
x + y = 4
The first step is to write both equations as linear equations in the slope-intercept form.
y = 2*x - 2
y = -x + 4
Now we have two lines, and we can just graph them, the easiest way is the replace the value of x and obtain two points that belong to the line, and then draw a line that passes through both lines.
For example with the first one, we can firt replace x by 0 to get:
y = 2*0 - 2
y = -2
Then the point (0, -2) belongs to this line.
Now we can replace x by 1 to get:
y = 2*1 - 2 = 0
y = 0
The point (1, 0) belongs to this line.
Then we can draw these two points in the graph, and just draw a line that passes through these two points.
Once you have your two lines drawn, the solution of the system will be the point in which the lines intersect.
Below, you can see the two lines graphed (the green is the first one and the red is the second one)
And we can see that they intersect in the point (2, 2)
Then the solution of the system is (2, 2)
Answer:
(-2,0)
Step-by-step explanation:
Simplify the following ( -3m⁴) ( 6m⁶)
A 3m¹⁰
B -18m²
C -18m²⁴
D -18m¹⁰
Answer:
option d
Step-by-step explanation:
(-3m⁴)(6m⁶)
-18m¹⁰
really need help like help on math
Answer:
D
Step-by-step explanation:
there are infinite solutions because if the numbers are equal that means that both sides are equal
both sides have x too
therefore x can be any value and the equation will still be true
please help asap, it's for homework
Answer:
The slope is 10/1 so +10
Step-by-step explanation:
Hope this helps !!!
Answer:
10.
Step-by-step explanation:
Picking out 2 convenient points, (3, 30) and (0, 0):
Slope = (30-0)/(3-0)
= 30/3
= 10.
the answer right here
\Answer
2.0/5
3
22angeldent
Expert
96 answers
977 people helped
#1 Line
Slope = 4.000/2.000 = 2.000
x-intercept = 1/-2 = -0.50000
y-intercept = 1/1 = 1.00000
#2 Slope = 2.000/2.000 = 1.000
x-intercept = 2/-1 = -2.00000
y-intercept = 2/1 = 2.00000
Step-by-step explanation: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
y-(2*x+1)=0
STEP
1
:
Equation of a Straight Line
1.1 Solve y-2x-1 = 0
Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).
"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.
In this formula :
y tells us how far up the line goes
x tells us how far along
m is the Slope or Gradient i.e. how steep the line is
b is the Y-intercept i.e. where the line crosses the Y axis
The X and Y intercepts and the Slope are called the line properties. We shall now graph the line y-2x-1 = 0 and calculate its properties
Graph of a Straight Line :
Calculate the Y-Intercept :
Notice that when x = 0 the value of y is 1/1 so this line "cuts" the y axis at y= 1.00000
y-intercept = 1/1 = 1.00000
Calculate the X-Intercept :
When y = 0 the value of x is 1/-2 Our line therefore "cuts" the x axis at x=-0.50000
x-intercept = 1/-2 = -0.50000
Calculate the Slope :
Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 1.000 and for x=2.000, the value of y is 5.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 5.000 - 1.000 = 4.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)
Slope = 4.000/2.000 = 2.000
Geometric figure: Straight Line
Slope = 4.000/2.000 = 2.000
x-intercept = 1/-2 = -0.50000
y-intercept = 1/1 = 1.00000
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
y-(x+2)=0
STEP
1
:
Equation of a Straight Line
1.1 Solve y-x-2 = 0
Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).
"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.
In this formula :
y tells us how far up the line goes
x tells us how far along
m is the Slope or Gradient i.e. how steep the line is
b is the Y-intercept i.e. where the line crosses the Y axis
The X and Y intercepts and the Slope are called the line properties. We shall now graph the line y-x-2 = 0 and calculate its properties
Graph of a Straight Line :
Calculate the Y-Intercept :
Notice that when x = 0 the value of y is 2/1 so this line "cuts" the y axis at y= 2.00000
y-intercept = 2/1 = 2.00000
Calculate the X-Intercept :
When y = 0 the value of x is 2/-1 Our line therefore "cuts" the x axis at x=-2.00000
x-intercept = 2/-1 = -2.00000
Calculate the Slope :
Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 2.000 and for x=2.000, the value of y is 4.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 4.000 - 2.000 = 2.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)
Slope = 2.000/2.000 = 1.000
Geometric figure: Straight Line
Slope = 2.000/2.000 = 1.000
x-intercept = 2/-1 = -2.00000
y-intercept = 2/1 = 2.00000
Answer:
nice
Step-by-step explanation:
help fast plss!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
d
Step-by-step explanation:
For those of you who are good at proofs, please help, I am offering 20 points.
Answer:
statement: segment HA is parallel to seg HD and seg HD is parallel to seg AN.
Reason: given
statement: angle 1 is congurent to angle 3.
reason: alternate interior angles are congruent.
statement: angles 2 and 4 are congruent
reason: alternate interior angles are congruent.
statement: Seg DA is congruent to seg DA
reason: reflexive property
statement: angle AHD is congruent to angle AND
reason: since angles 1 and 3 are congruent, and 2 and 4 are congruent, and HDA is a triangle, same with AND, the last angle must be congruent.
statement: seg HD is congruent to seg NA and HA is cong to ND.
reason: ASA angle side angle theorem states that if 2 angles and a side is congruent to the corresponding parts of another triangle, then it is congruent.
Step-by-step explanation:
introduces a study where researchers studying the relationship between honesty, age, and self-control conducted an experiment on 1G0 children between the ages of 5 and 15. The researchers asked each child to toss a fair coin in private and to record the outcome (white or black) on a paper sheet, and said they would only reward children who report white. Half the students were explicitly told not to cheat and the others were not given any explicit instructions. Differences were observed in the cheating rates in the instruction and no instruction groups, as well as some differences across children's characteristics within each group. (a) Identify the population of interest and the sample in this study. (b) Comment on whether or not the results of the study can be generalized to the population, and if the findings of the study can be used to establish causal relationships.
Answer:
The solution to this question can be defined as follows:
Step-by-step explanation:
In choice a:
Both children between 5 and 15 years old and 160 years old are also the populations of interest, and Kids from 5 to 15 years of age.
In choice b:
These findings could be compared like we do not know whether the groups were randomly selected, and the allocation is still not random; there could be no casual conclusion because the statement is valid even With sample research, and after randomization, filtering, and testing of 160 specimens (instruction vs no-instruction) Its analysis can be common to the community and replicated. There could be explanatory relations generated by experimental research. This analysis is observational and can therefore be used Causal relationships are established.gggg