Answer:
2
Step-by-step explanation:
14/7=2
Draw graph of straight lines to find approximate solution to these simultaneous equations . y = 3x + 7 and 2y + x = 2
Answer:
(-1.714, 1.857)
Step-by-step explanation:
Here, we want to find the approximate solution to the system of linear equations
We start by plotting the graph of the lines
We have the plot as shown below;
the red line represents the first equation while the blue line represents the second equation
We have the solution as the point at which the two lines meet
The solution to this is;
(-1.714, 1.857)
Can someone give me the answer I need a A in math
Can anyone round the number 277235.2251 for me please. Asap please!!!
Answer:
277,235.23
Step-by-step explanation:
You have to round to the nearest 0.01 or you can call it the Hundredths Place.
Guided Practice
Determine whether the relation is a function. Explain why or why not.
{(3, 7), (3, 8), (3, –2), (3, 4), (3, 1)}
A.
No; the domain value 3 corresponds to multiple range values.
B.
Yes; there is no value in the domain that corresponds to more than one value of the range.
C.
No; a function must have multiple domain values.
Answer:
A. it is not a function because there are multiple y-values paired with a single x-value.
Step-by-step explanation:
Four siblings took turns babysitting their young cousin. If they divided the 5 hour shift evenly, how long did each one babysit for? Give the answer in hours and minutes.
A set of middle school student heights are normally distributed with a mean of 150 centimeters and a
standard deviation of 20 centimeters. Let X = the height of a randomly selected student from this set.
Find P(130 < x < 150).
You may round your answer to two decimal places.
Answer:
.34
Step-by-step explanation:
Khan
The required value of probability P(130< x < 150) is 0.34.
What is the Z -a score?
A Z-score is stated as the fractional model of data point to the mean using standard deviations.
here, z = x - μ / σ
where, μ = mean and σ = standard deviation
Here,
From the quesiton put value in z score formula,
z = 130 - 150 / 20
z = -1
P (z < - 1) = P(x<130) = 0.15866
P (x > 130) = 0.84134
Now,
P(130< x < 150) = 0.5 - P(x<130)
P(130< x < 150) = 0.5 - 0.15866 = 0.34134
Thus, the required value of P(130< x < 150) is 0.34.
Learn more about the z-score here:
brainly.com/question/13793746
#SPJ5
Please triple check
Answer:
Step-by-step explanation:
6 children speak english out of 20 children
P(E)=6/20
P(E)=3/10
P(E)=0.3
Find the area of 2 and 4
Answer:
2. 254.469
4. 962.11275
Plug the diameter into the equation:
A = (3.14)r^2
r being the radius
Answer:
2.) 56.52 inches or 56.55
4.) 109.9 km or 109.96
Step-by-step explanation:
diameter x pi = circumference
Solve the system.
3x + 2y + 4z = 11
2x – y + 3z = 4
5x – 3y + 5z = -1
Enter your answer as an ordered triple.
Someone help please!!
Answer: (x, y, z) = (-3, 2, 4)
In other words, x = -3, y = 2 and z = 4.
You'll enter the number only into each box.
===============================================================
Explanation:
There are a few routes we can take to solve this. I'll use substitution.
First let's isolate y in the second equation.
2x - y + 3z = 4
2x + 3z = 4+y
4+y = 2x+3z
y = 2x+3z-4
This is then plugged into the first equation
3x+2y+4z = 11
3x+2( y )+4z = 11
3x+2( 2x+3z-4)+4z = 11 .... replace y with 2x+3z-4; since y = 2x+3z-4
3x+4x+6z-8+4z =11
7x+10z-8 = 11
7x+10z = 11+8
7x+10z = 19 .... we'll call this equation (4) and come back to this later
--------------------------------------
Move onto the third equation (of the original equations given)
Plug in y = 2x+3z-4
5x - 3y + 5z = -1
5x - 3( y ) + 5z = -1
5x - 3( 2x+3z-4 ) + 5z = -1
5x - 6x - 9z + 12 + 5z = -1
-x - 4z + 12 = -1
-x - 4z = -1-12
-x - 4z = -13 ..... let's call this equation (5)
--------------------------------------
To recap, we found equation (4) and equation (5) to be
7x+10z = 19-x - 4z = -13We can then solve for x in equation (5) like so
-x - 4z = -13
-x = -13 + 4z
-x = 4z - 13
x = -(4z - 13)
x = -4z + 13
This is then plugged into equation (4)
7x+10z = 19
7(-4z+13)+10z = 19 .... note how we now have one variable
-28z+91+10z = 19
-18z+91 = 19
-18z = 19-91
-18z = -72
z = -72/(-18)
z = 4
We can use this value of z to find x
x = -4z+13
x = -4(4)+13
x = -16+13
x = -3
Use the values of x and z to find y. We'll revisit the first equation in which we isolated y
y = 2x+3z-4
y = 2(-3)+3(4)-4
y = -6+12-4
y = 6-4
y = 2
So overall, the solution to this system is (x, y, z) = (-3, 2, 4)
-------------------------------
Checking the answer:
We'll replace x,y,z with the values we found.
In the first equation, 3x+2y+4z = 11 becomes 3(-3)+2(2)+4(4) = 11 and that simplifies to 11 = 11. In other words, the expression 3(-3)+2(2)+4(4) turns into 11. This confirms the first equation.Repeat the same idea for the second equation. We have 2x-y+3z=4 turn into 2(-3)-2+3(4) = 4 and that simplifies to 4 = 4. The answer is verified here. The third equation 5x-3y+5z = -1 becomes 5(-3)-3(2)+5(4) = -1 which simplifies to -1 = -1. We get a true equation here as well.Since all three equations are true when (x, y, z) = (-3, 2, 4), this verifies the answer completely. This is the only solution to the system. The system is independent and consistent.
Which of the following expressions are equivalent to 0.7 * -4 * 0.4
Answer:
0.4
Step-by-step explanation:
Answer:
A and B
Step-by-step explanation: Khan
2(4x + 2) = 12
What is the first step?
Answer:
The first step is to distribute.
Step-by-step explanation:
2(4x + 2)= 12
8x + 4 = 12
You distribute the 2 to 4x and 2.
The cost to rent a raft is $7 per person. A raft can hold up to 6 people. There is a $3 launch fee per raft. What is the total cost for a group of 6?
Before you tell me the answer tell me how do I explain how I got my answer :{
Answer:
$42 [$7/person*6 people]+$6[$3 launch fee/raft*2 rafts]
Step-by-step explanation:
$48 total
PLEASE MARK BRAINLIEST
NEED IT FOR A NEW RANK
ty in advance:D
Find how many years it takes for money to triple when invested at an annual interest rate of 4.3% compounded continuously. That’s the entire question and I’m not quite sure what to do?
9514 1404 393
Answer:
25.5 years
Step-by-step explanation:
The multiplier for continuous compounding at annual rate r for t years is ...
e^(rt)
You want the value of t when that is 3 and r=0.043.
3 = e^(0.043t)
ln(3) = 0.043t
t = ln(3)/0.043 ≈ 25.549 . . . . years
Tom is considering opening a pool cleaning business as a summer job. He wants to determine the percentage of people in his town that own a pool. Which is the best group of people for Tom to survey?
A
150 people who are members of the swim team
B
150 people randomly selected from customers at a local pool supply store
C
150 people randomly selected from the town telephone book
D
150 people who completed and returned a survey by mail
Answer:
D
Step-by-step explanation:
Find the missing angle measurement of a triangle with these angles:
45°, 35.8°, x°
a = 45 b = 35.8 c = 57.503
Tacos from the taco truck or 60% off on Tuesdays Erica by the taco for 1.50 on Tuesday she wants to know the regular price of a taco quick answer
Answer:
3.75
Step-by-step explanation:
i did the lesson its correct :)
Answer:
Regular Price: 100%
$3.75
Sale price: 40%
$1.50
Discount:
60%
$2.25
Which equation can be used to find the regular price, r, of a taco?
1.5 = 0.4r
Step-by-step explanation:
Read the answers correctly, or you might be typing in the wrong answer.
Everything is all correct, Thank me later :)
Can someone help me please thank you!
Answer:
135
Step-by-step explanation:
That's the answer.........
Given x || y.
∠6 and ∠8 are _________ angles.
complementary
corresponding
supplementary
vertical
Answer:
angle 6 and angle 8 are vertical angles
Step-by-step explanation:
The angles opposite to each other when two lines cross are called vertical angles. In this case, angle 6 and angle 8 are those angles.
How do I do this please help me
Answer:
Answer of first one is. = angle 3
answer of second one is = angle 4
answer of third one is = angle 2
angle of fourth one is = 5
and last.one is angle 1
Which pairs are like terms in the expression below? Select all that apply.
25y + 15x – 0.2y – 6 + (–2)
Answer:
15x and -0.2y
Step-by-step explanation:
x + 2y < -2
How do I graph this
Answer:
Put
[tex]x < - 2 - 2y[/tex]
Then put some of value to y and get x then we can graph it
The area of square ABCD is 144 square units. The area of square EFGH is 64 square units. H∈ AB and G∈ BC . The blue area is three times the red area. Find the area of △HBG.
Answer:
24
Step-by-step explanation:
RSM
I JUST DOD THE IMPOSSIBLE AND SOLVED A RUBIX CUBE IN 19 MOVES
Answer: see what you gotta do is/right/left/up/turn left/ down/up/down/down/ right up/ 2nd row turn left/ then do it all over again in you got it
Step-by-step explanation:
/right/left/up/turn left/ down/up/down/down/ right up/ ALSO CAN I BRAINLIEST IF I HELPED.
Sharon is buying candy. she buys 5 type on the menu if she splits the price equality with four friends how mich do they each pay
Answer:
D. 0.65
Step-by-step explanation:
0.05 x 5=0.25
0.01 x 5=0.05
0.07 x 5=0.35
0.25+0.05+0.35=0.65
they all must pay 0.65 each
Answer:
0.65
Step-by-step explanation:
please help!! i really need it.
ill give brainilest!!
Answer:
14
Step-by-step explanation:
i think it's 14. i hope i helped :)
You work in the quality assurance department for a bottling company. A water bottle is supposed to contain 750
milliliters (mL) of water, and the company sets a tolerance of +5 mL.
What is the least amount of water that is considered acceptable?
1. 740 mL
2. 745 mL
3. 750 ml
4. 755 mL
5. 760 mL
Answer:
The answer is 3.
Step-by-step explanation:
The company allows an extra 5mL but there is no specified amount for less. if there was it would be ±5mL
pLeAsE do this!! In five minutes it's due.
The area of a rectangular garden is 21x²-8x-4. Factor completely to find the dimensions of the box.(So find the length and width.)
Answer:
It's (7x+2)(3x−2)
Step-by-step explanation:
Can you guys help me? please
Answer:
3 square root 2.
Step-by-step explanation:
I think the answer is b (3 square root 2). the Pythagorean therom states that B^2+ B^2= C^2. we know that c squared is 36. 3 square root 2 is approximately 4.24. ( this squared is 17.98). 17.98 + 17.98 = 35.96. If i round this up, it is 36.
Will give brainliest if your right
A scientist conducts an experiment to observe the half-life period of the radioactive element barium. He starts the experiment with 200 grams of barium and records the mass at the end of every thirteen day. After how many days is the mass of barium closest to 1.5 grams?
Answer:
It would be 91 days
Step-by-step explanation:
Hope this helps :)
PLZ HELP ASAP ASAP!!!!
==============================================================
Explanation:
The value of k determines the slope, or rate of change, of how fast the balloon is climbing per second.
For example, if k = 5, then that means the balloon is going upward at 5 feet per second (equivalent to roughly 3.41 mph)
If k = 5, then y = kt becomes y = 5t. Note how we have the following
t = 0 leads to y = 0t = 1 leads to y = 5t = 2 leads to y = 10t = 3 leads to y = 15and so on. Each time t goes up by 1, d goes up by 5. This is one way to see how the speed is 5/1 = 5 ft per second.