What is the area of this trapezoid
Answer:
its 30
Step-by-step explanation:
can you please mark me as brainliest
For the equation y = 2.5X, choose which ordered pairs would be on the line if it was graphed? Select ALL that apply.
(0, 0) and (-4, -10)
(-1, -2.5)
(0. 0) and (2, 5)
(3, 7.5) and (-3, -7.5)
(1, 3.5) and (2, 5)
(1, 2.5) and (3, 6.5)
Answer:
(0, 0) and (-4, -10)
(0. 0) and (2, 5)
(3, 7.5) and (-3, -7.5)
Step-by-step explanation:
We have the function:
y = 2.5*x
This is a linear relationship, with a slope equal to 2.5 and y-intercept equal to zero.
A linear relationship can be written as:
y = a*x + b
where a is the slope and b is the y-axis intercept.
For a line that passes through the points (x1, y1) and (x2, y2), the slope can be written as:
a = (y2 - y1)/(x2 - x1).
Then we can check with the points given in the options, and see which ones meet these two criteria.
a) (0, 0) and (-4, -10)
the slope will be:
a = (-10 - 0)/(-4 - 0) = 2.5
The slope is 2.5, then:
y = 2.5*x + b
To find the value of b, we just need to replace the values of one of the points in the equation, let's use the point (0, 0)
0 = 2.5*0 + b
0 = 0 + b
Then b = 0
y = 2.5*x
This means that these points would be on the line when graphed.
b) (0. 0) and (2, 5)
in this case the slope is:
a = (5 - 0)/(2 - 0) = 2.5
then:
y = 2.5*x + b
to find the value of b, let's use the point (0, 0)
0 = 2.5*0 + b
0 = 0 + b
b = 0
then
y = 2.5*x
This ordered pair would be on the line when graphed.
c) (3, 7.5) and (-3, -7.5)
The slope is:
a = (-7.5 - 7.5)/(-3 - 3) = 2.5
y = 2.5*x + b
The value of b will be obtained by using the point (3, 7.5)
7.5 = 2.5*3 + b
7.5 = 7.5 + b
b = 0
Then:
y = 2.5*x
This ordered pair will be on the line when graphed.
d) (1, 3.5) and (2, 5)
The slope is:
a = (5 - 3.5)/(2 - 1) = 1.5
The slope is different than 2.5, then we can discard this pair.
e) (1, 2.5) and (3, 6.5)
the slope is:
a = (6.5 - 2.5)/(3 - 1) = 2
Again, the slope is different than 2.5, then this option can be discarded.
We can conclude that the ordered pairs that will be graphed are:
(0, 0) and (-4, -10)
(0. 0) and (2, 5)
(3, 7.5) and (-3, -7.5)
25.2 dived 6 what the answer
Answer:
4.2 you should use a calculator for these
Step-by-step explanation:
help help u will get 11 points !
Answer:
30
Step-by-step explanation:
all triangles =180
because 180 -120 =60whch is the missing inside angle
and we know that this is a right angle
so we subtact what we know to find what we dont
180-(60+90)=30
(150)
180-150=30
Answer:
30
Step-by-step explanation:
please anyone??????????
Answer:
D: 85 degrees
Step-by-step explanation:
Four-sided shape degrees add up to 360
85 + 100 + 90 = 275
360 - 275 = 85
I hope this helped and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!
Answer:
answer 85
Step-by-step explanation:
85+100+90=275
360-275 = 85
plus did the question before hope it helps
Suppose Metro by T-Mobile wants to offer a simple extended warranty plan. If your phone is damaged, they will repair it for up to $50. If you lose or destroy your phone, they will give you a $200 voucher towards a new phone. The company believes that 5% of customers will need the replacement voucher and 10% will request a repair. What is the standard deviation?
Answer:
45
Step-by-step explanation:
Given that :
Voucher awarded (x) :
Repair = $50
Lose or destroy = $200
P(x):
Replacement voucher = 5%
Repair voucher = 10%
X ______ 50 ______ 200
P(x) ____ 0.1 _______ 0.05
Expected variance Var(X) :
ΣX²p(x) - E(x) ;
E(x) = Σx*p(x) = (50*0.1) + (200*0.05) = 15
ΣX²p(x) = Σ[(50^2 * 0. 1) + (200^2 * 0.05)] = 250 + 2000 = 2250
Var(X) = 2250 - 15^2 = 2025
Standard deviation = √Var(x)
Standard deviation = √2025
Standard deviation = $45
The temperature on Monday was -23° F. The temperature on Tuesday was 18° higher. What was the temperature on Tuesday?
A.
-41° F
B.
5° F
C.
-5° F
D.
41° F
Answer: C is correct
Step-by-step explanation:
-23+18= -5
6 + 18r = 20r - 18 - 4r
Answer:
r = -12
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Step-by-step explanation:
Step 1: Define
6 + 18r = 20r - 18 - 4r
Step 2: Solve for r
Combine like terms: 18r + 6 = 16r - 18Subtract 16r on both sides: 2r + 6 = -18Isolate r term: 2r = -24Isolate r: r = -12y=x-1
y=x+1
((This is System of Equations))
Add 1 to both sides of the equation.
y = x - 1
2x = 3 + 1
Add 3 and 1 .
y = x - 1
2x = 4
What is the root of the polynomial equation *(x-2)(x+3) - 18? Use a graphing calculator and a system of
equations.
O-3
ОО
O2
O 3
Answer:
Start by using your first factor, 1. Substitute "1" for each "x" in the equation: (1)3 - 4(1)2 - 7(1) + 10 = 0.
This gives you: 1 - 4 - 7 + 10 = 0.
Because 0 = 0 is a true statement, you know that x = 1 is a solution.
Step-by-step explanation:
Start by using your first factor, 1. Substitute "1" for each "x" in the equation: (1)3 - 4(1)2 - 7(1) + 10 = 0.
This gives you: 1 - 4 - 7 + 10 = 0.
Because 0 = 0 is a true statement, you know that x = 1 is a solution.
Choose the property of real number that justifies the equation. Last time I asked this the picture was cut out! Please answer quick I’m timed!
Answer:
I am thinking it is distributive property
plz help...........
Answer:
1 is one of them
Step-by-step explanation:
How much is 7.332 rounded to the nearest hundredth urgent and for math test please give me right answer
Answer:
should be 7.33
Step-by-step explanation:
sorry if I'm wrong im like 100% its the answer but for some reason its not then I am very sorry
Answer:
I'll say 7.33
Step-by-step explanation:
hope it helped
5th grade math. Decimals. Correct answer will be marked brainliest.
Answer:
4.71 +3.80 =8.51
Step-by-step explanation:
Answer:
8.51
Step-by-step explanation:
4.71
+ 3.80
------------
8.51
~Ren
Write a multiplication fact that goes with this division fact.
33 ÷ 11 = 3
Answer: 3 x 11 = 33
Step-by-step explanation: Hope it helped!
A pie crust recipe calls for two cups of butter for each three cups of flour. Elliiette is making enough crusts to use up eight cups of flour how many cups of butter wills she meed
Answer:
12 cups
Step-by-step explanation:
I need help finding a, b, and c. Thank you!
y = -3x + 5 y = -8x + 25 using the elimination method
Answer:
x= 4
y=-7
Step-by-step explanation:
y=-3x+5
y=-8x+25
re arrange both equations into
3x+y=5
8x+y=25
multiply one equation by -1 to make eliminating possible
we will multiply the second
3x+y=5
-8x-y =25
cross out the y leaving
-5x=-20
divide
x=4
now we substitute x in one of the equations
lets use the first
3(4) +y=5
12+y=5
now minus 12 on both sides
y=-7
(4,-7)
Find the value of Angle A and B!!! Will mark brainliest
Answer:
A=73
B=107
Step-by-step explanation:
since the angles are across from eachother they would be the same, the total angle of all 4 added together would be 360, and 73+107 would be 180, so 180+180 is equal to 360
Solve for y ..............
Answer:
Im not gonna explain i will give you the answer that i came up with I currently have 60 right now hope this is right
Step-by-step explanation:
Which table correctly converts inches to feet
Answer:
the third table
Step-by-step explanation:
Hope this helps and plz mark as brainliest!
please help! will mark brainliest once two answers
Answer:
SSS
Step-by-step explanation:
MK = MK
Because M is the midpoint of GL, GM = LM
It is given that GK ≈ LK
please i really y need help it’s due in 4 mins
Answer: 1/2 + y
Step-by-step explanation:
Answer:
DV=3√10
Step-by-step explanation:
D(-1,7) and V(8,4)
to determine the length you use the distance formula
d =√(x2-x1)²+ (y2-y1)²
in thhis case
d=√(-1-8)²+(7-4)²
d=√81 +9
d=√90
d= 3√10
Write the equation of the line that passes through the points (9,8) and (6,3). Put
your answer in fully reduced point-slope form, unless it is a vertical or horizontal line.
Answer:
y - 3 = 5/3(x - 6)
General Formulas and Concepts:
Algebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Point-Slope Form: y - y₁ = m(x - x₁)
x₁ - x coordinate y₁ - y coordinate m - slopeStep-by-step explanation:
Step 1: Define
Point (9, 8)
Point (6, 3)
Step 2: Find slope m
Substitute: [tex]m=\frac{3-8}{6-9}[/tex]Subtract: [tex]m=\frac{-5}{-3}[/tex]Simplify: [tex]m=\frac{5}{3}[/tex]Step 3: Write function
Slope m = 5/3
Point (6, 3)
Substitute: y - 3 = 5/3(x - 6)You get a $400 base salary for your job selling totes. You also get a 4% commission on all
your sales. If your take home pay for the month was $756. What were your total sales?
Answer: $400 + 4%+ $756. = 1172 Or $400 - 4% - $756. = -372
Step-by-step explanation:
22 of the students in a Geometry class passed a Geometry test. If these students are 50%
of all the students in the class, how many students are in this Geometry class? Round
your answer to the nearest whole number if necessary
I need a helping hand
Answer:it’s the third one
Step-by-step explanation:
Answer:
ur pic is not clear.........
How do you use long devision for -7/8? Plz help
Answer:
-0.875
Step-by-step explanation:
A trip on a boat normally costs £26, but there is now a discount of 15%.
Work out the cost of the trip after the discount.
Answer:
So all you have to do is ... 15% of $26=3.9, in that case your answer would be 22.1. Hope that helped!
Please help me answer this question thank you !!
Answer:
c
Step-by-step explanation: