Answer:
-3 and -2
Step-by-step explanation:
7x² + 19x + 21 = 4x² + 4x + 3
combine like terms:
3x² + 15x + 18 = 0
3(x² + 5x + 6) = 0
(x + 3)(x + 2) = 0
x = -3
x = -2
What is the mean of the set of data? 18, 11, 16, 8, 16, 21 plz help
Which expression has a value of -8?
A 14 + 2(−5) − (3)(9)
B (10 ÷ 5) − (2 ∙ 4) − 5 + 8
C −4 − 5 − 1 − 2(4) + 10
D 12 − 2(4) + (5 − 2) − 33
HELP PLEASE QUICKLY!!
O and OP are given with centers (-2, 7) and (12, -1) and radii of lengths 5 and 12, respectively. Using similarity transformations on O, prove that O and OP are similar. (2 points)
Answer:
they are reciprecants of eachother
What is the surface area?
Someone please help
Answer:
134 square inches
Step-by-step explanation:
To find surface area, you must find the individual area of each face of the shape. There are 6 faces on every cube or other rectangular prism, so you must perform 3 equations, as every face has an identical face on the opposite side. The formula for regular area is Length (l) times Width (w).
Large sides on front and back: 8x6=48
Slim sides to the right and left: 1x6=6
Slim sides on top and bottom: 8x1=8
Then combine:
48+48+6+6+8+8=134
The cost for the raw materials of marble countertops, can be represented by the function , where is the area of the countertops. The retail markup, can be represented by the function. Which function can be used to find the marked-up price of a marble countertop depending on the area?
Answer:
[tex]m(c(a)) = 4.8875a[/tex]
Step-by-step explanation:
The missing parameters are:
[tex]c(a) = 4.25a[/tex] --- Cost of marble countertops
[tex]m(c) = 1.15c[/tex] --- Cost of retail markup
Required
The cost of marked up price
This implies that we calculate m(c(a))
We have:
[tex]c(a) = 4.25a[/tex]
[tex]m(c) = 1.15c[/tex]
[tex]m(c) = 1.15c[/tex] can be written as:
[tex]m(c(a)) = 1.15*c(a)[/tex]
Substitute: [tex]c(a) = 4.25a[/tex]
[tex]m(c(a)) = 1.15*4.25a[/tex]
[tex]m(c(a)) = 4.8875a[/tex]
Hence, the cost of marked up price is: [tex]m(c(a)) = 4.8875a[/tex]
What is the VALUE OF X PLS HELPP
Answer: I think it would be 285.
Step-by-step explanation:
A circle is 360* so I did 360-75. Hope this helps!!!
If You show all your work in these problems i will love you and give you brainliest
Michael returned a bag of cans and received $4.65 back. If the deposit for each can was $0.05, how many cans did he return? (how did you get it?)
Answer:
~50 bottles
Step-by-step explanation:
hope this helps
Answer:93
Step-by-step explanation:
$78 is what % of $120?
Answer:
Step-by-step explanation:
What is the graph of one cycle of a sine curve with amplitude 5, period pi, and a>0?
What is an equation for the sine curve in the form y=asinb0?
a. y=2sin50
b. y=5sinpi0
c. y=5sin20
d. y=5sin1/2 0
Answer:
c is correct
Step-by-step explanation:
if u have the equation y = a sin b (x),
a is the amplitue (regardless of + or - before it) and 2pi / b = period. so we can deduce that a = +5 or -5 and b = 2, but then it says a>0, so therefore a must be 5 and b is still 2, so the equation is y= 5 sin2(O)
pls help help help help help
Answer:
y = -2
Step-by-step explanation:
When the input (x) is -5, we just look at where (-5) is on the x axis and see where the line is for the y-coordinate.
The line is at -2
Which of the following statements is true? Select all that apply.
To find the diameter of a circle, divide its circumference by π or 3.14.
To find the diameter of a circle, divide its circumference by pi or 3.14.
The radius of a circle is twice its diameter.
The radius of a circle is twice its diameter.
The circumference of a circle is greater than its diameter.
The circumference of a circle is greater than its diameter.
The diameter of a circle is twice its radius.
The diameter of a circle is twice its radius.
The circumference of a circle is twice its radius.
Answer:
the answer is the 1st one
Is this correct?? Please dont mine the little notes I took when solving it..
A= 12, base= 16
Area= (1/2)(12)(16) = 96
384+96 =480
Semi Circle should be something like =(1/2) pir^2
diameter= hypotenuse= sqrt(12^2 +16^2) = 20
radius= r= d/2= 20/2
Semi Circle= (1/2) pi 10^2= 50pi= 157.0796327
Total = 480+157.0796327=637.0796327. Rounding to the nearest hundred would give me 637.08??
Answer and Step-by-step explanation:
Yes, all of your calculations are correct!!
The area of one rectangle is 192, and since there are 2 rectangles, we multiply 192 by 2, which results in 384.
The area of a triangle is [tex]A = \frac{(Height)(Base)}{2}[/tex], which you got to be 96.
The Semi Circle would have half of the area of a circle, so you are correct when you multiply the equation by [tex]\frac{1}{2}[/tex].
To find that diameter, we need to use the Pythagorean Theorem.
[tex]12^{2} + 16^{2} = d^{2} \\\\144 + 256 = d^{2} \\\\400 = d^2\\\\d = 20[/tex]
So the diameter is 20, and the radius is 10 (20 divided by 2 = radius).
Plug that into the equation, and you get the answer to be [tex]50\pi[/tex], or 157.0796327.
157.0796327 + 384 + 96 = 637.08 (rounded to the nearest hundredth).
Good job!
#teamtrees #PAW (Plant And Water)
In circle O below AB is a diameter and m
Pls help?!?!? With this
Answer:
7 buses. 52÷ 8 = 6.5 so rounding up to 7
Is this graph considered linear, non-linear, or something else?
Answer:
Linear! check the picture below.
Step-by-step explanation:
(the left is linear, the right is non)
what is the area of a circle with a diameter of 18.2 cm?
use 3.14 for TT and round your final answer to the nearest hundredth.
the area is ___ square cm.
Answer:
The area is 260.16 square cm.
Formula:
A=πr2
d=2r
A=1
4πd2=1
4·π·18.22≈260.15529
Martin recorded the low temperatures at his house for one week. The temperatures are shown below -7, -3, four, one, -2, -8, seven approximately what was the average low temperature for the week?
no links or files or ima report you and i mean it
Answer: Links and files
The data set below has 6 values.
Find the mean absolute deviation for the data set.
8, 16, 15, 7, 18, 14
The function f(x) = |x| is shifted to the left 3 units and down 2 units to make the function g(x) . Write the equation g(x) that illustrates this change.
Answer:
g(x) = |x+3|-2
Step-by-step explanation:
to move horizontally replace each x with (x ± c)
if you move it to the right, you need x - c
if you move it to the left , you need x + c
so , since we are moving 3 units to the left, we replace the x with x+3
g(x) = |x+3|-2
Myrna is bought fresh flowers for her Mom’s birthday. She had $25 with her. The flowers were on a 10% sale. How much did Myrna pay for the flowers?
Answer:
2 [tex]\frac{5}{2}[/tex]
Step-by-step explanation:
[tex]\frac{25}{1} \\[/tex] × [tex]\frac{10}{100}[/tex] = [tex]\frac{10}{4}[/tex] or
Simplified: [tex]\frac{5}{2}[/tex]
2 whole number [tex]\frac{1}{2}[/tex]
Add (5x3+7x−8)+(2x3−5x2−x+3).
7th grade Math help please :)
Answer:
false
true
true
true
true
false
true
false
false
answers r in order of pictures
Step-by-step explanation:
EMERGENCY!!!! Each hour, every person who knows a rumor tells two other people. If one person starts the rumor, then after the first hour, three people know the rumor. The next hour, those three people each tell two more people. After eight hours, how many people will know the rumor? You do not have to include units in your answer. (I've asked this question before but the answers I got were 384 and 64 and they were both wrong)
Answer:
After eight hours 6,561 people will know the rumor.
Step-by-step explanation:
Since each hour, every person who knows a rumor tells two other people, so that if one person starts the rumor, then after the first hour, three people know the rumor, and the next hour, those three people each tell two more people, to determine after eight hours, how many people will know the rumor, the following calculation must be performed:
Hour 0 = 1
Hour 1 = 1 + 2 = 3
Hour 2 = 3 + 2 x 3 = 9
Hour 3 = 9 + 2 x 9 = 27
Hour 4 = 27 + 2 x 27 = 81
Hour 5 = 81 + 2 x 81 = 243
Hour 6 = 243 + 2 x 243 = 729
Hour 7 = 729 + 2 x 729 = 2,187
Hour 8 = 2,187 + 2 x 2,187 = 6,561
Therefore, after eight hours 6,561 people will know the rumor.
which expression is equivalent to
-2(x+4) -(3x+8)?
A) 5x+16
B) 5x-16
C) -5x+16
D) -5x-16
Answer:
D
Step-by-step explanation:
-2x - 8 - 3x - 8
= - 5x - 16
You might need: Calculator
What is the area of the following circle?
Either enter an exact answer in terms of it or use 3.14 for and enter your answer as a decimal.
T=7
units?
Show Calculator
Answer:
Area = 153.8 cm/ m
Step-by-step explanation:
Area of circle = 22 ÷ 7 × r²
= 22 ÷ 7 × (7²)
= 22 ÷ 7 × 49
= 3.14 × 49
= 153.8 cm/ m
help me, please a b c or d
Answer: B
Step-by-step explanation: ;)
the base of a triangle is 18 in. the height is 10 in. what is the area of this triangle
Answer:
90 in²
Step-by-step explanation:
Formula for a triangle is bh/2
b = 18
h = 10
[tex] \frac{18 \times 10}{2} = 90[/tex]
How do I solve this arithmetic sequence?
Answer:
The 16ᵗʰ term of this sequence is 82
Step-by-step explanation:
Here,
First Term = a₁ = 9
Common Difference = (d) = 2
Now, For 16ᵗʰ term, n = 16
aₙ = a + (n - 1)d
a₁₆ = 7 + (16 - 1) × 2
a₁₆ = 7 + 15 × 5
a₁₆ = 7 + 75
a₁₆ = 82
Thus, The 16ᵗʰ term of this sequence is 82
-TheUnknownScientist