Answer:
::::::::::
(x + 1) (3x - 7)
A sandwich shop sells sandwiches for $3.75 each, including tax.
The shop received a total of $90.00 from the sales of
sandwiches one afternoon.
Write an equation that can be used to determine the number
of sandwiches, x, sold by the sandwich shop that afternoon.
3.75 times x = 90
90 divided by 3.75= 24
mark brainliest if right
What is the scale factor from ABC to DEF
Answer:
Since you are looking for the scale factor of ABC to DEF the answer is 8 because DEF is 8 times larger than ABC
Step-by-step explanation:
can someone help me, please
Answer:
3. 108.982 feet per second
so yes faster than 100 feet per second
4.
5. 46.336°
6. 31.999°
7. 73.301°
8. 18.435°
Step-by-step explanation:
3. tan(16)= 250/x
x=250/tan(16)
x= 871.853611
speed=871.853611/8
= 108.982 feet per second
so yes faster than 100 feet per second
4. I do not understand the formulation of the question
5. sinx= 3.4/4.7
asin*(to the power of -1)*(3.4/4.7)=x
x=46.336
6.tanx=4,532/7253
atan*(power -1)* (4,532/7253)=x
x=31.999
7.tanx=500/150
x=73.301
8. tanx=30/10
atan(30/10)=x
x=71.56505118
90-71.56505118=18.43494882(the final angle)
Write an expression for "the sum of a and four".
Please help!!
10 POINTS
Answer5:
Step-by-step explanation:
Answer:
4+a=x
Step-by-step explanation:
sum means addition of two or more terms so if the sum of a and four is the question, I represented the result with x cause it is unknown but the question is. Thank you
If angle 1 is 110°, what would the other angle measures
have to be in order for m | n and
9 || p?
Angle 2 =
Angle 3 =
Angle 4 =
Answer:
If Angle 1 is 110,
then the second angle to complete the straight angle (180 degrees) is...
180 - 110 = 70
Angle 2 = 110 (same as Angle 1, plus it's obtuse)
Angle 3 = 70 (it's acute)
Angle 4 = 70 (same as Angle3, plus it's acute)
14. circunferencia = 7.3 m (calcular
el radio ) *
Answer:
radius =1.1618m
Step-by-step explanation:
circumference of circle =7.3m
2πr=7.3
r=7.3/(2π)=1.1618m
2) What is the value of y?
A) 2 B) 10 C)9 D)12
(geometry)
Answer:
D) y = 12
Step-by-step explanation:
One can use the angle bisector theorem to solve this problem. The angle bisector theorem states:
[tex]\frac{a_1}{b}=\frac{a_2}{c}[/tex]
Where ([tex]a_1[/tex]) and ([tex]a_2[/tex]) are a part of the side that is intersected by the angle bisector and ([tex]b[/tex]) and ([tex]c[/tex]) are the other two sides in the triangle. Substitute in the given values and solve for the unknown.
[tex]\frac{4}{8}=\frac{6}{y}[/tex]
Simplify,
[tex]\frac{1}{2}=\frac{6}{y}[/tex]
Cross products,
[tex]12=y[/tex]
In a sample of 800 adults, 218 think that most celebrities are good role models. Two adults are selected from this sample without replacement. Find the probability that neither adult think celebrities are good role models
Answer:
582/800 * 581/799
brr i do NOT want to calculate that
Please help me ASAP
Please help
Answer:
5 X 4
Step-by-step explanation:
If you plot the dots, youll obviously see a rectangle. The height of the rect. is 4, while the length is 5, so the measurements would be 5 x 4.
Hope this helped!!
Please help me with the problem
Exact Answers:
Area = 150.5*sqrt(3)Perimeter = 57+7*sqrt(3)Approximate Answers:
Area = 260.673646539Perimeter = 69.12435565======================================
Explanation:
Your diagram is 100% correct. Nice work.
To get the area of the trapezoid, we could use the area of a trapezoid formula below:
A = h*(b1+b2)/2
In this case, we have,
h = 7*sqrt(3) = heightb1 = 18 = base1b2 = 25 = base2the bases are parallel to each other. The height is always perpendicular to the base. We won't use the "14" at all.
So,
A = h*(b1+b2)/2
A = 7*sqrt(3)*(18+25)/2
A = 7*sqrt(3)*21.5
A = (7*21.5)*sqrt(3)
A = 150.5*sqrt(3)
This is the exact area.
The approximate area is roughly
150.5*sqrt(3) = 260.673646539
The units for the area are in square km, or km^2. Though your teacher said for you not to include the units.
Another way to get the area of the trapezoid is to break the diagram into a rectangle and triangle as you have done so, and then find the area of each sub-piece. Adding the two smaller areas should lead to the result shown above.
-----------------------------------
To get the perimeter, we add up all of the exterior sides. We do not include the right-most vertical line that is 7*sqrt(3) km long because it is inside the figure. The horizontal segment that is 7 km long is part of the "25 km" segment, so we'll ignore that 7.
Adding the four exterior sides leads to:
7*sqrt(3)+18+14+25 = 57+7*sqrt(3)
This value is exact. It approximates to
57+7*sqrt(3) = 69.12435565
The units for the perimeter are in kilometers, and you won't have any exponent over the "km". While your teacher doesn't want the units, it's still handy to know what the units would be.
Step-by-step explanation:
solution given:
for rectangle
length [l]=18km
breadth [b]=7√3 km
for triangle
base[b1]=25-18=7km
height [h]=b=7√3km
for area :area of. (rectangle +triangle}=
l×b+1/2 b1×h=18×7√3+1/2 ×7×7√3=260.67km²
now
perimeter=sum of all sides
=18+14+25+7√3=69.12km
is your answer
Each month, a phone company charges $20 for 500 minutes of talking time plus $0.45 for each additional minutes. Unlimited texting costs $30 more. Choose an expression to show the cost of a talk-and-texting plan for one month, given x minutes over 500
A. 0.45 + 50x
B. 50 + 0.45x
C. 30 + 20x
D. 500 + 50 + 0.45x
Someone please help on this question
Answer:B
Step-by-step explanation:If 500 minutes of talk = 20 and texting = 30 and each additional minute of talk = 0.45 then the bill would be (for B = total cost)
Six trigonometric functions of -315.
Draw the line of reflection that reflects ABC onto AA'B'C'.
y
7
Pro
6-
5-
Ted
4
B'3
B
2
N
+
-7 -6
-5 -4 -3 -2
2 3
5
6
7
СТ
-2
C
-3-
Do 4 problems OOOO
Answer:
Line of reflection → x = 1
Step-by-step explanation:
Coordinates of B → (3, 2)
Coordinates of B' → (-1, 2)
If point B is reflected across a vertical line x = a, both the points B and B' will be equidistant from the line of reflection.
Coordinates of the midpoint of the segment joining B and B'
= [tex](\frac{x_+x_2}{2},\frac{y_1+y_2}{2})[/tex]
= [tex](\frac{3-1}{2},\frac{2+2}{2})[/tex]
= (1, 2)
Line of reflection will pass through this midpoint (1, 2)
Therefore, equation of the line of reflection will be,
x = 1
Two mathematical questions attached below.
Answer:
See below
Step-by-step explanation:
[tex]9.( {m}^{3} {n}^{5} )^{ \frac{1}{4} } \\ = m^{\frac{3}{4}}n^{\frac{5}{4}}\\ \\ 10. \sqrt[5]{ \sqrt[4]{x} } \\ = \sqrt[5]{ {x}^{ \frac{1}{4} } } \\ = {( {x}^{ \frac{1}{4} } )}^{ \frac{1}{5} } \\ = {x}^{ \frac{1}{4} \times \frac{1}{5} } \\ = {x}^{ \frac{1}{20} } \\ \\ \sqrt[5]{ \sqrt[3]{ {a}^{2} } } \\ = \sqrt[5]{ {a}^{ \frac{2}{3} } } \\ = {( {a}^{ \frac{2}{3} } )}^{ \frac{1}{5} } \\ = {a}^{ \frac{2}{3} \times \frac{1}{5} } \\ = {a}^{ \frac{2}{15} } [/tex]
Solve the inequality
7x + 4) > 0.
Answer:
Step-by-step explanation:
7(x + 4) > 0
x+4 > 0
x > -4
Answer:
x>4
Step-by-step explanation:
7(x+4)>0
distrubute
7x+28>0
subtract 28 from both sides
7x>28
divide both sides by 7
x>4
Hope that helps :)
50 m
50 m
h
28 m
Find the area of the isoceles triangle.
The area is
square meters.
Answer:
700 m^2
Step-by-step explanation:
If the height is 28, and the base is 50, do the triangle area formula for the area.
1/2 28 * 50 = 14 * 50 = 700
Answer:
I believe it should be 700
Step-by-step explanation:
Formula: B times H times 1/2
Which of the following classifications best represents the triangle below
Answer:
Since this triangle seems to be 180 degree, and one angle is 90 degrees and the other is half thslat value (45), the other value will be 45 degrees. It is an Isosceles triangle
Find the value of x
Answer:
x=13
Step-by-step explanation:
Since both angles are vertical angles and are therefore congruent, the expression is equal to 114.
7x+23=114
Subtract 23 from both sides.
7x=91
Divide both sides by 7.
x=13
Given y = alog(x + c) + d. What would happen to the graph if you changed the value of d? Describe both positive and negative
values.
A)
B)
Changing the value of d would cause a vertical stretch or shrink. A negative
value would also cause a reflection over the x-axis.
Changing the value of d would cause a horizontal stretch or shrink. A
negative value would also cause a reflection over the y-axis.
Changing the value of d would move the graph up and down (vertically). A
positive d value would move the graph up and a negative d value would
move the graph down.
Changing the value of d would move the graph left and right (horizontally).
A positive d value would move the graph right, and a negative d value
would move the graph left.
C)
D)
Answer: A
Step-by-step explanation:
I just took the USATESTPREP quiz and that is the answer.
Option (C) will define the changes in the graph of the function with the values of 'd'.
Given function in the question → y = alog(x + c) + d
Rules for the translation of a function,
If a function y = f(x) is shifted 'h' units upwards on y-axis, rule for the translation will be → y = f(x) + hIf the function y = f(x) is shifted 'h' units downwards, rule for the translation → y = f(x) - hHence, in the given function y = alog(x + c) + d, positive value of 'd' will define the shifting of the parent function upwards.
And for the negative value of 'd' will define the shift of the function downwards.
Option (C) will be the correct option.
Learn more,
https://brainly.com/question/16770247
how did you determine ray
Answer:
In naming a ray, we always begin with the letter of the endpoint (where the ray starts) followed by another point on the ray in the direction it travels. Since the vertex of the angle is the endpoint of each ray and our vertex is , each of our rays must begin with . Only fails to do so.
Answer:
A ray is a part of a line that has one endpoint and goes on infinitely in only one direction. You cannot measure the length of a ray. A ray is named using its endpoint first, and then any other point on the ray (for example, →BA ).
PLS HELP
ILL GIVE BRAINLIEST DUE SOON SHOW YOUR WORK
I need help. what is 2e=2
Answer:
e=1
Step-by-step explanation:
2e=2
Divide both sides by 2
2e/2=2/2
Simplify
e=1
ANSWERED by NONE other than the #QUEEN herself aka #DRIPPQUEENMO!!
HOPE THIS HELPED!!
Abby lives in a home worth $115,000. She has a mortgage of $98,000. She owes $5,200 on her
car that is worth $11,000. She has a credit card balance of $2,300. She also has a checking
account with a balance of $900 and $300 in gift cards. What is Abby's net worth?
Step-by-step explanation:
11500-98000 = 17000
11000-5200 = 5800
17000+5800 - 2300 + 900 + 300 = $21700
Answer: Abby's net worth would be around $21,400. $127,000 in assets, and around 105,000 in liabilities.
Step-by-step explanation: With the given information I added up the total and got around 127,000 in assets and 105,000 in liabilities, and when subtracted you will get Abby's net worth (answer), 21,400.
Hope This Helped, Have Great Day!
To determine the organic material in a dried lake ted, the percent carbon by mass is measured at two different locations. In order to compare the means of the two different locations, it must first be determined whether the standard deviations of the two locations are different.
Location1(%C) Location2(%C)
1 10.40 10.10
2 10.20 10.90
3 10.30 10.20
4 10.40 10.70
5 10.20 10.40
a-1. Far each location, calculate the standard deviation and report it.
- location 1: _____
- location 2: _____
a-2. What is the calculated F value for comparing the standard deviation?
b. Are the two standard deviations for the locations significantly different at the 95% confidence level?
A. yes.
B. No.
c. What is the calculated t value used to compare the means of these two locations?
d. Are the means for the two different locations significantly different at the 95% confidence level?
A. yes.
B. No.
Answer:
a-1.- location 1: =0.01- location 2: =0.113
a-2. F= 0.08849
b. A. yes.
c. t= -1.020
d. B. No.
Step-by-step explanation:
Location1(%C) Location2(%C)
x x² y y²
1 10.40 108.16 10.10 102.01
2 10.20 104.04 10.90 118.81
3 10.30 106.09 10.20 104.04
4 10.40 108.16 10.70 114.49
5 10.20 104.04 10.40 108.16
∑ 51.5 530.49 52.3 547.51
x`= ∑x/n1 = 51.5/5= 10.3; y`= ∑y/n2= 52.3/5= 10.46
Sx² = 1/n1-1[ ∑x² - (∑x)²/n1] = 1/4[ 530.49 - (51.5)²/5]
= 1/4[ 530.49 - 530.45] = 0.01
Sy² = 1/n2-1[ ∑y² - (∑y)²/n2] = 1/4[ 547.51 - (52.3)²/5]
= 1/4[ 547.51 - 547.058] = 0.113
F= Sx²/Sy²= 0.01/0.113= 0.08849
The critical region is F ≥ F(0.025) (5,5)= 7.15
and F ≤ 1/F(0.025) (5,5) = 1/7.15= 0.13986
Since the calculated value of F =0.08849 falls in the critical region we conclude that the two standard deviations for the locations significantly different at the 95% confidence level.
c. t= x1`-x2`/ sqrt ( s₁²/n₁ + s₂²/n₂)
t= 10.3-10.46/ sqrt( 0.01/5 +0.113/5)
t=- 0.16/0.15684
t= -1.020
d. The calculated value t= -1.020 does not fall in the the critical region
t (0.025) (4) = ±2.776 we conclude that the means for the two different locations are not significantly different at the 95% confidence level.
..........................help
I need this thank you please help
Answer:
Step-by-step explanation:
This is not a function.
A function has to have 1 y associated with each x. This relationship has 2 except for 1 point (the vertex at 3,0).
You can write a domain and range for it.
The domain is
- infinity < x < 3
The range is
-infinity < x < + infinity.
Describe the graph of y=-x and compare it with the graph of y = x
NEED HELP BADLY !!!!
An expression is shown below:
2x3y + 8xy − 4x2y − 16y
Part A: Rewrite the expression by factoring out the greatest common factor. (4 points)
Part B: Factor the entire expression completely. Show the steps of your work. (6 points)
Plz, give well-thought-out answers!!!
Answer:
Part A: Rewrite the expression by factoring out the greatest common factor. (4 points)
answer:
2y(x³+4x-2x²-8)
Part B: Factor the entire expression completely. Show the steps of your work. (6 points)
answer:
2y(x³+4x-2x²-8)
2y(x³-2x²+4x-8)
2y(x²(x-2)+4(x-2))
2y(x²+4)(x-2)
Someone please help me, i will give brainliest
Enter the decimal equivalent of 11/8
Answer:
1.37
Step-by-step explanation:
I just used my calculator lol
given that cosθ = 0.678 where 0<θ
Answer:
θ = 47.312447
Step-by-step explanation:
I assume you are trying to find θ
The first thing you do is to find θ is to do the acos of 0.678
θ = acos(0.678)
θ = 47.312447