Answer:
47
Step-by-step explanation:
I took the test
Lines AB and CD are straight lines. Find x and y. Give reasons to justify your solution
Answer:
x = 18
y = 54
Step-by-step explanation:
90 - 72 = 18
18 + 2x = 3x
18 = x
2(18) = 36
3(18) = 54
72 + y + 54 = 180
126 + y = 180
y = 54
Answer:
54
Step-by-step explanation:
Louis's age is three years more than twice the age of Sanchez. The sum of their ages is 39. How old are Sanchez and Louis? 3 +2s+s =39
Answer:
According to your formula, she's 12
Step-by-step explanation:
1.43 x 10 to the 9 power
Answer:
1430000000
Step-by-step explanation:
The altitude of a tree affects the rate at which the tree grows. G(A),models the growth rate (in millimeters per year) of a certain kind of tree at an altitude A (in kilometers above sea level). Match each statement with the feature of the graph that most closely corresponds to it.
Answer:
y-intercept: at sea level, the tree grows by 1.4 millimetres each year, Relative minimum or maximum: the fastest possible growth rate is 2.6 millimetres per year, Increasing or decreasing interval: as the altitude surpasses 7 kilometres above the sea level, the growth rate of the tree declines
Step-by-step explanation:
°ω°
PLEASE PLEASE PLEASE HELP ME!!!!!!!!!!!!!
Answer:
c
Step-by-step explanation:
the graph has a y intercept of (0, -4) and a slope of 3
the equation is y = 3x - 4
Help me with the top please
Answer:
Step-by-step explanation:
first option
Answer:
where you can define or adjust what you share and how your account is handled!
17.75X + 24 = 18.95x + 18
i feel happy after 3 years of being emotionless. witch proportion can be used to solve the following percent problem? what is 50% of 70?
a. x/70=50/100
b. x/50=70/100
c. 50/70=x/100
d. 70/x=50/100
34 points for answering
2x+7y=1
y=4x−8
Is (4,8)(4,8)left parenthesis, 4, comma, 8, right parenthesis a solution of the system?
hello :
2x+7y=1 ...(*)
y=4x−8...(**)
(4;8) means x= 4 and y= 8
put this values in (*) and(**) :
2(4)+7(8) =1 62=1 false
8=4(4)-8 8=8 true
so :(4;8) is not solution for this system.
A four-digit perfect square number is created by placing two positive two-digit perfect square numbers next to each other. What is the four-digit square number?
Answer:
1681
Step-by-step explanation:
In a four digit perfect square, the first two digits and last two digits taken seperately are also perfect squares.
Therefore, the answer is 1681 because 1681=41*41 and
16=4*4 and 81=9*9
Which is the height of the lighthouse?
Answer:
Step-by-step explanation:
tan 26° = [tex]\frac{x}{90}[/tex] ⇒ x = 90tan26° ≈ 43.9 ft. (This answer for the picture)
sin 26° = [tex]\frac{h}{100}[/tex] ⇒ h = 100sin26° ≈ 43.9 ft (This answer for the text)
h = √(100² - 90²) ≈ 43.589 ft. (Pythagorean theorem)
What is a term I’m doing this math
Answer:
A term is one part of an equation in math, for example 9x+2x=3. a term would be 9x
Step-by-step explanation:
What is an equation of the line that passes through the points (-5, 4) and (5, -8)?
Answer:
Y= -1.2x-2
Step-by-step explanation:
Number 7 thanks ASAP ASAP
Answer:
Price is $1088 (agrees with answer B)
Step-by-step explanation:
Notice that the linear equation that represents this relationship can be estimated via finding the slope and y-intercept using a couple of the given points on the plane (for example (5, 140), and (10, 200), which results in;
Price = 12 x + 80
where "x" is the number of computers shipped.
Then, to ship 84 computers, we have the following price:
Price = 12 (84) + 80 = 1088
Then the price is $1088.
i need bro with this problem
Answer:
what is the question ????
Standard form of a line that has a slope of -1 and passes through (-5,-1)
Step-by-step explanation:
y + 1 = -(x+5)
y + 1 = -x - 5
y = -x - 6
x + y = -6
Hi :) could I have some help?
Answer:
1) -6 2/3
2) \sqrt{36} (square root of 36)
3) 6.4
4) 71/11
Step-by-step explanation:
put them all as a decimal, it might make it easier
Someone plzz help you get 10 points.
Jason wants to solve the following system using the elimination method:
x + 3y = 10
2x + y = 5
What number should the equation 2x + y = 5 be multiplied by to eliminate y?
a. 2
b. -3
c. -2
d. 3
Answer:
No single Correct answer. Both b and d will work
Step-by-step explanation:
You want to get rid of y.
The first equation has a 3 in front of the y
Therefore you would have to multiply the second equation by 3 or - 3
If you use -3 you would add the two equations
If you use 3 you would subtract the two equations.
It is either b or d. Both will give you the same answer.
- Three
x + 3y = 10
-6x - 3y = - 15 Add
-5x = - 5 Divide by - 5
x = -5/-5
x = 1
+ Three
x + 3y = 10
6x + 3y = 15 Subtract
-5x = - 5
x = -5/-5
x = 1 Same thing.
Find the regression equation, letting the first variable be the predictor (x) variable. Find the best predicted Nobel Laureate rate for a country that has 78.8 Internet users per 100 people. How does it compare to the country's actual Nobel Laureate rate of 2 per 10 million people
The table is missing, so i have attached it.
Answer:
Regression equation is;
y = 0.2028x - 8.443
The predicted value is not at all close to the actual novel rate
Step-by-step explanation:
The internet users will be the x-values while the novel laureates will be the y-values.
Thus, sum of x values is;
Σx = 79.5 + 79.6 + 56.8 + 67.6 + 77.9 + 38.3 = 399.7
Sum of y values is;
Σy = 5.5 + 9 + 3.3 + 1.7 + 10.8 + 0.1
Σy = 30.4
Σx² = 79.5² + 79.6² + 56.8² + 67.6² + 77.9² + 38.3²
Σx² = 27987.71
Σy² = 5.5² + 9² + 3.3² + 1.7² + 10.8² + 0.1²
Σy² = 241.68
Σxy = (79.5 × 5.5) + (79.6 × 9) + (56.8 × 3.3) + (67.6 × 1.7) + (77.9 × 10.8) + (38.3 × 0.1)
Σxy = 2301.16
The regression line will be;
y = b1(x) + b0
b1 is expressed as;
b1 = [nΣxy - (Σx • Σy)]/[nΣx² - (Σx)²]
Where n is number of given data which is n = 6.
Thus;
b1 = [(6 × 2301.16) - (399.7 × 30.4)]/[(6 × 27987.71) - (399.7)²]
b1 = 1656.08/8166.17
b1 = 0.2028
b0 is expressed as;
b0 = [(Σy • Σx²) - (Σx • Σxy)]/[nΣx² - (Σx)²]
b0 = [(30.4 × 27987.71) - (399.7 × 2301.16)]/[(6 × 27987.71) - (399.7)²]
b0 = -68947.268/8166.17
b0 = -8.443
Thus, regression equation is;
y = 0.2028x + (-8.443)
y = 0.2028x - 8.443
Best predicted value is given as;
y¯ = (Σy)/n
y¯ = 30.4/6
y¯ = 5.067 per 10 million people.
The predicted value is far greater than the actual value of 2 per 10 million people.
Thus, we can say that the predicted value is nowhere close to the actual value
Which equation results from isolating a radical term and squaring both sides of the equation for the equation /c - 2 - /c=5?
Answer:
D. c - 2 = 25 + c + 10√c
Step-by-step explanation:
Hope this helps!! Have a great day!! ❤
what is ─7 ─ 4b = ─5b sovled for the variable
Answer:
b = 7
Step-by-step explanation:
Add 4b to both sides
You then get -b = -7
You want to multiply both sides by -1 because you can't have a negative variable
Answer:
b = 7
Step-by-step explanation:
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pls answer pls.mill mark brainliest
Answer:
x^10
Step-by-step explanation:
PLEASE HELP IT'S ON A TEST!
What is an equation of the line that passes through the point (2, 4) and is perpendicular to the line whose equation is y = 2x + 1?
Answer:
y=-1x+6
Step-by-step explanation:
desmos
2/3 times 4/7 Plz thx
Answer:
8/21
Brainliest? :)
Step-by-step explanation:
Please help me with this question and explain it
Answer:
(1, 1)
Step-by-step explanation:
Multiply x and y by 0.25 to find the new coordinates after dilation
Solve for A please :)
Answer:
a = 54 deg
Step-by-step explanation:
Recall that for a triangle, any exterior angle equals the sum of its two remote interior angles (see attached for reference).
In our case the exterior angle is 2a and the remote interior angles are (a+10) and 44
hence,
2a = (a+10) + 44
2a = a + 10 + 44
2a = a + 54 (subtract a from both sides)
2a - a = 54
a = 54 deg
Double the difference of a number n and 3 is -10. Which equation models this "number riddle" correctly?
A. 2 - n - 3 = -10
B. 2(3 - n) = -10
C. 2 (-10) = 3
D. 2(n - 3) = -10
does anyone know how to get these dumb restrictions off this chromebook
Answer:
You must force restart the chromebook. It is probably a school computer so you wont be able to get the software/extenstions back. Sadly there is nothing you can do. If you have another computer you can use Chrome remote desktop to connect to it and control it.
5/3 rewrite fraction with a denominator of 12
Answer: 20/12
Step-by-step explanation: In order to get a 12 in the denominator
of 5/3, we multiply top and bottom of 5/3 by 4 to get 20/12.
So 20/12 is an equivalent fraction.
Monica is a lawyer who earns $8.322.65 every month. She spends $830.98 on rent, $210.36 on food, and $120.45 on gas every month. After these expenses, she has left from her earnings.