Answer:
Algebra 1 questions and answers - Get algebra 1 help with questions involving ratios, proportions, equations with 2 variables, monomials, polynomials, factoring, inequalities, absolute value, graphing, lines, x-intercept, y-intercept, slope, parabolas, functions, roots, radicals, quadratic equations, the quadratic formula and more.
Step-by-step explanation:
The table shows the location of four cities relative to sea level.
Which city is closest to sea level? Explain.
Answer:its citc (C)
Step-by-step explanation:
The graph represents this system of equations. A system of equations. y equals 4. y equals 3 minus StartFraction on-half EndFraction x. A coordinate grid with 2 lines. The first line passes through (negative 2, 4) and (0, 3). The second line passes through (negative 2, 4) and (0, 4). What is the solution to the system of equations?
Answer:
A coordinate grid with 2 lines. The first line passes through (negative 4, negative 3), (0, negative 3), and (4, negative 3). The second line passes through (0, negative 5) and (2, 4). The lines appear to intersect at about one-half, negative 3.
Solve the system of equations algebraically. Verify your answer using the graph.
y = 4x – 5
y = –3
What is the solution to the system of equations?
((StartFraction one-fourth EndFraction, negative 3), –3)
((StartFraction one-half EndFraction, negative 3), –3)
(–3, (negative 3, StartFraction 2 over 3 EndFraction))
Step-by-step explanation:
Answer:
its a
Step-by-step explanation:
i just did it
The length of the day in Lagos, Nigeria (in minutes), ttt days since the beginning of the year can be estimated by this formula: \qquad L(t) = 727+22\sin \left(\dfrac{2\pi (t - 80.75)}{365}\right)L(t)=727+22sin( 365 2π(t−80.75) )L, left parenthesis, t, right parenthesis, equals, 727, plus, 22, sine, left parenthesis, start fraction, 2, pi, left parenthesis, t, minus, 80, point, 75, right parenthesis, divided by, 365, end fraction, right parenthesis. When is the longest day of the year? Give an exact answer.
Answer:
The longest day of the year is day 172
Step-by-step explanation:
Since the length of day is L(t)=727+22sin[2π(t−80.75)/365], the maximum length of day is obtained when sin[2π(t−80.75)/365] is at its maximum value which is 1. So. sin[2π(t−80.75)/365] = 1
We now solve this to find the day at which this maximum value occurs.
sin[2π(t−80.75)/365] = 1
[2π(t−80.75)/365] = sin⁻¹(1)
[2π(t−80.75)/365] = π/2
dividing both sides by 2π/365, we have
[2π(t−80.75)/365] ÷ 2π/365 = π/2 ÷ 2π/365
t−80.75 = 365/4
t−80.75 = 91.25
t = 91.25 + 80.75
t = 172
The longest day of the year is day 172
Answer:
172
Step-by-step explanation:
Keep in mind, that when graphed one of the "tallest" points is 172,749. Using this, you'll find that 172 is the tallest
Calculate the circumference of the following circles. Give your answers to 1 decimal place.
Answer:
a) 31.4 cm b) 22.0 cm c) 9.4 mm d) 18.8 m e) 1.6 m f) 28.3 cm g) 78.5 cm h) 9.7 m
Step-by-step explanation:
All it really is multiply the diameter which is the straight line through the center of the circle
C = d × \pi
The circumference of the circles is A. 31.4 cm, B. 22cm approx,
C. 9.4 mm, D. 18.88 m, E. 1.6 m, F. 28.3 cm, G. 78.5 cm, H. 4.1 m.
What is a circle?A circle is a closed, two-dimensional object where every point in the plane is equally spaced from a central point. The line of reflection symmetry is formed by all lines that traverse the circle. Additionally, every angle has rotational symmetry around the center.
Given circles,
circumference of circle is 2πr in form of diameter = πd
where d is diameter,
A. given d = 10 cm
circumference = c = πd
c = 3.14 x 10
c = 31.4 cm
B. given, d = 7 cm
c= πd
c = 3.14 x 7
c = 21.98 cm = 22 cm approx
C.given, d= 3 mm
c = πd
c = 3.14 x 3
c = 9.4 mm
D. given d = 6 m
c = πd
c = 3.14 x 6
c = 18.8 m
E. given c = 0.5 m
c = πd
c = 3.14 x 0.5
c = 1.6 m
F. given d = 9 cm
c = πd
c = 3.14 x 9
c = 28.3 cm
G. given d = 25 cm
c = πd
c = 3.14 x 25
c = 78.5 cm
H. given d = 1.3 m
c = πd
c = 3.14 x 1.3
c = 4.1 m
Hence the circumference is as follows.
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The table of values represents a linear function g(x), where x is the number of days that have passed and g(x) is the balance in the bank account:
x g(x)
0 $600
3 $720
6 $840
Part D: What is the balance in the bank account after 7 days? (2 points)
Answer:
880
Step-by-step explanation: Every three days the balance increases by 120 so you would divide 120 by 3 to get 40. This would mean that the balance increases by 40 everyday so after seven days the balance would be 880
Solve for X
-18x + 21 > - 15 OR 20x - 13 greater than or equal to 27
answers:
-x< -2 or x greater than or equal to 2
-x = -2
-x greater than or equal to 2
-There are no solutions
-All values of x are solutions
C, x is greater than or equal to 2
Step-by-step explanation:
Both equations have X equaling to 2
In the metric system, which prefix would you use for "1/100"?
A. Kilo-
B. Milli-
C. Centi-
O D. Hecto-
Answer:
C
Step-by-step explanation:
Centi means 1/100.
Answer: C. Centi-
Step-by-step explanation:
It comes from Latin. You can remember that 0ne Cent is 1/100 of a dollar.
(-4c2+7cd+8d)+(-3d+8c2+4cd)=
Answer:
4c² + 11cd + 5d
Step-by-step explanation:
To add monomials, you have to look at the variables that are accompanied by their coefficients. In the given problem, (–4c2 + 7cd + 8d) + (–3d + 8c2 + 4cd), you can combine both cd ut nt cd and c² and cd and d and d and c² because they have different variables.
(–4c2 + 7cd + 8d) + (–3d + 8c2 + 4cd)
(-4c² + 8c²) + (7cd + 4cd) + (8d - 3d)
4c² + 11cd + 5d
Answer:
4,11,5
Step-by-step explanation:
How many solutions can be found for the system of linear equations represented on the graph?
A) no solution
B) one solution
C) two solutions
D) infinitely many solutions
Answer:
D, ininitely many
Step-by-step explanation:
A- incorrect since the lines intersect
B - incorrect since the lines intersect at more than one point
C - incorrect since the lines intersect at more than 2 points
D- correct since the lines intersect at infinitely many points (since they're the same line)
Answer:
D) infinitely many solutions
Step-by-step explanation:
we can see that the graphs shows two lines that are exactly one on top of the other. This means that every point on either line will also coincide with a point on the other line.
Because of this, every point on one line is also a solution on the other line, thus there are infinitely many solutions.
When trying to find a common denominator, can you multiply the denominators and get a common denominator?(example: 3/7 2/5
7 x 5 = 35
2/35 3/35)
Answer:
im pretty sure you have to cross muliply
but i learned in school what ever you do to the top do to the bottom
hope it helps
sorry no definet answer
Step-by-step explanation:
PLZ HELP!!
f(x) = x2 is graphed in red. Which of the following
functions is graphed to the left in purple?
O f(x) = -(x + 3) 2 - 2
Of(x) = (x – 3)2 +2
O f(x) = - ] (x+3)2 - 2
O f(x) = (x – 3)2 – 2
10
9514 1404 393
Answer:
f(x) = -1/4(x +3)² -2
Step-by-step explanation:
The graph is shifted left 3 and down 2. It is also reflected over the x-axis and vertically compressed. The leading coefficient will be a negative fraction, and the offsets will replace x with x+3, and will add -2 to the scaled function.
The result is shown below.
find 150 of 28 by writing the percent as a decimal
Answer:
28 / 150 = 18.666666666667%
Step-by-step explanation:
28 / 150 = 18.666666666667%
4.45 / 100 = 4.45%
143 / 165 = 86.666666666667%
127,998 / 1,609,008 = 7.955087855374%
graph the function -4x + 3y = 15
what do you think of france
Answer:
Baguette is very important
Step-by-step explanation:
they don't have bidet but baguette
Answer:
honestly i think its a pretty country, its pretty nice and wish i could go.
Step-by-step explanation:
You were given a Starbucks gift card for your birthday. One day, you used the gift card to order 3 drinks that cost $5.20 each. When you looked at your receipt, you noticed that there was a remaining balance of $26.00 on the gift card.
Write an equation in point-slope form that represents the total balance left on the gift card, y, in terms of the number of drinks ordered, x.
Answer:
The card had 41.60 originally
Step-by-step explanation:
3 x 5.20 = 15.60
15.60 + 26.00 = 41.60
unless there is tax
2/5+6/10
What is the answer
We have to make sure the denominators are equal.
10 goes into 5 evenly, so we only need to multiply one term to get a common denominator.
Multiply 2 by 2, and get 4, then we multiply 5 by 2 and get 10
Now the equation is 4/10 + 6/10
Since our denominators match, we can add the numerators.
4 + 6 = 10
That gives us the sum, which is 10/10 aka 1 whole
your welcome :) (btw can u please give brainly?)
Answer:
2/5 + 6/10 = 1
Step-by-step explanation:
first let’s change 2/5 so it has the same denominator as 6/10.
2/5 * 2/2 = 4/10
now add
4/10 + 6/10 = 1
Which of the following statements must be true about this diagram? check all that apply.
Answer:
F & B
Step-by-step explanation:
Answer:
C, D, E
Step-by-step explanation:
Remote angles theorem; when one side of a triangle is extended, the angle formed must equal the sum of the two angles in the triangle, that it isn't adjacent to.
C. (m<4) > (m<1), this has to be true because of remote angles theorem.
(m<4) must be greater than (m<1) because it is equal to (m<1) + (m<2)
D. (m<4) > (m<2), apply the same logic here, as was applied to the first problem.
E. (m<1) + (m<2) = (m<4), this is essentially remote angles theorem.
Find the total surface area of this square based
pyramid.
10ft
10 ft
[? ]ft?
Answer:
300 [tex]ft^{2}[/tex]
Step-by-step explanation:
area of triangle= [tex]\frac{b*h}{2}[/tex]
[tex]\frac{10*10}{2}[/tex] = 50
4 sides of the triangle
4*50=200
area of square= l*w
10*10=100
area of square+area of triangles
200+100=300
_[tex]ft^{2}[/tex]=300[tex]ft^{2}[/tex]
Answer: 300
Step-by-step explanation:
which is an equation of the line parallel to 4y-7x=8 and passes through (-4,0)
Answer:
The correct option is; A. [tex]y = \dfrac{7}{4} x + 7[/tex]
Step-by-step explanation:
The given equation is 4·y - 7·x = 8
The coordinates of the point the line passes = (-4, 0)
By dividing the given equation by 4, we have;
4·y/4 - 7/4·x = 8/4
Which gives;
y - 7/4·x = 2
y = 7/4·x + 2
Which is the equation of a straight line in slope and intercept form, y = m·x + c, with the slope, m = 7/4, and the y-intercept = 2
Given that the required line is parallel to the graph of the equation, 4·y - 7·x = 8, the slopes of both equations are equal we have;
Slope of required line = 7/4, point on the line = (-4, 0), which gives the following point and slope form equation of a straight line;
y - 0 = 7/4 × (x - (-4))
y = 7/4·x + 7/4 × 4 = 7/4·x + 7
The equation of the line is therefore;
y = 7/4·x + 7
The bus drives 66 km at an average speed of 24 km/h. How long does the journey take?
Answer:
2.75 hours
Step-by-step explanation:
Speed is 24km per hour ([tex]\frac{24km}{1hour}[/tex]), and the bus covered 66km.
We need to get a value of km with the rate (24/1) and distance (66) given.
We get: [tex]\frac{1hour}{24km} *66km[/tex].
The km cancel out, leaving us with 66/24 hours, or 2.75 hours.
Answer this question, and dnt answer it if u dnt know the answer :|
Answer: 45
Step-by-step explanation:
The sides are 2x,3x,4x
Add them up and you have 9x=45
A grocery store offers a 10% discount on your entire purchase when you spend more than $50. You have $117 to spend on groceries and the cost of the groceries in your cart is currently $50. The inequality 0.9(a+50)≤117 represents the cost a (in dollars) of groceries that you can add to your cart.
Answer:
a≤80
Step-by-step explanation:
Answer:
a≤80
Step-by-step explanation:
f(x)= x^2 + 10f(x)=x
2
+10f, left parenthesis, x, right parenthesis, equals, x, squared, plus, 10
Over which interval does fff have a positive average rate of change?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
[-3,3][−3,3]open bracket, minus, 3, comma, 3, close bracket
(Choice B)
B
[-4,-1][−4,−1]open bracket, minus, 4, comma, minus, 1, close bracket
(Choice C)
C
[-3,1][−3,1]open bracket, minus, 3, comma, 1, close bracket
(Choice D)
D
[-1,2][−1,2]
Answer:
The option D represents an interval with a positive average rate of change.
Step-by-step explanation:
Let [tex]f(x) = x^{2}+10[/tex], the average rate of change on the interval [tex][a,b][/tex] is represented by the definition of the secant line:
[tex]\bar f = \frac{f(b) -f(a)}{b-a}[/tex] (1)
Where:
[tex]a[/tex], [tex]b[/tex] - Lower and upper bounds, dimensionless.
[tex]f(a)[/tex], [tex]f(b)[/tex] - Function evaluated at lower and upper bounds, dimensionless.
Now we proceed to check each option:
A. [tex]a = -3[/tex], [tex]b = 3[/tex]
[tex]\bar f = \frac{19-19}{3-(-3)}[/tex]
[tex]\bar f = 0[/tex]
B. [tex]a = -4[/tex], [tex]b = -1[/tex]
[tex]\bar f = \frac{11-26}{(-1)-(-4)}[/tex]
[tex]\bar f = -5[/tex]
C. [tex]a = -3[/tex], [tex]b = 1[/tex]
[tex]\bar f = \frac{11-19}{1-(-3)}[/tex]
[tex]\bar f = -2[/tex]
D. [tex]a = -1[/tex]. [tex]b = 2[/tex]
[tex]\bar f = \frac{14-11}{2-(-1)}[/tex]
[tex]\bar f = 1[/tex]
The option D represents an interval with a positive average rate of change.
Answer:
It would be D
Step-by-step explanation:
Quinton bought n number of shares for d dollars and paid a 1% commission. He sold the stock for y dollars and paid a flat fee of
$7. Which expression below models Quinton's net proceeds algebraically?
oyn(1.01d - 7).
(1.01nd + 7) - Y
y - 1.01(nd - 7)
y (1.01nd + 7)
Answer:
y - (1.01nd + 7)
Step-by-step explanation:
Quinton bought n number of shares for d dollars and paid a 1% commission. It means he bought [tex]\dfrac{1}{100}nd=0.01nd[/tex]
He sold the stock for y dollars and paid a flat fee of $7. It means he sold y-7.
We need to find Quinton's net proceeds algebraically. It will be given as :
[tex]y-7-0.01nd\\\\=y-(0.01nd+7)[/tex]
Hence, the correct option is (d) i.e. y - (1.01nd + 7)
please help im struggling
Answer:
a = 6
b = 3
c = 2
Step-by-step explanation:
Since n(P) = a+b = 9
and n(Q) = b+c = 5
and b is given to be 3
a and b follow easily.
a is 9-b = 9-3 = 6
c is 5-b = 5-3 = 2
What are two coordinates on this graph?
Answer:
(0,5) and (6,0)
Step-by-step explanation:
is 2(x+3)=5x+6-3x always true or never true?
Answer:
always true
Step-by-step explanation:
Distribute the left side
2(x + 3) = 2x + 6
Simplify the right side
5x + 6 - 3x ← collect like terms
= 2x + 6
Thus
left side = right side , so always true
Equation 2(x + 3) = 5x + 6 - 3x is an identity which is always true.
What is identity?An identity is an equation which is always true, no matter what values are substituted.
Identities can be written with the sign ≡.
Given equation,
2(x + 3) = 5x + 6 - 3x
Simplifying
2x + 6 = 2x + 6
LHS = RHS
Hence, equation 2(x + 3) = 5x + 6 - 3x is always true.
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Answer:
alright bet
Step-by-step explanation: ayyyeeeee
Answer:
Alright bro I will add you and thank you
Step-by-step explanation:
Please hurry I am being timed!
The three angles of a triangle have equal measures. The sum of their measures is 180º. What is the measure of each angle?
A. 45º
B. 30º
C. 60º
D. 55º
Please select the best answer from the choices provided
Sorry if this is easy for you I'm bad at math
HELP ME PLEASE I NEED HELP I BEG OF U WILL MARK AND 5 STARS