Which algebraic expression is equivalent to the expression below?
9(2x + 2)
A.
18x + 2
В.
9x + 4
C.
36x
D.
18x + 18
btw I will mark brainliest!
Answer:
I guess the answer is D - 18x + 18
Don needed 89% on his test to increase his overall letter grade. About how many of the 150 questions on the test did he need to answer correctly?
Answer:
134 questions
Step-by-step explanation:
150 x 0.89 = 133.5
Find the discriminant and determine the number of real roots for each equation. Show steps.
-9x^2 + x - 7 = 0
Answer:
0 real roots
Step-by-step explanation:
Given a quadratic equation in standard form
ax² + bx + c = 0 ( a ≠ 0 )
Then the discriminant is
Δ = b² - 4ac
• If b² - 4ac > 0 then 2 real and distinct roots
• If b² - 4ac = 0 then 2 real and equal roots
• If b² - 4ac < 0 then the roots are not real
- 9x² + x - 7 = 0 ← is in standard form
with a = - 9, b = 1, c = - 7 , then
b² - 4ac = 1² - (4 × - 9 × - 7) = 1 - 252 = - 251
Since b² - 4ac < 0 then the equation has no real roots
Simplify the following expression using exponents
Answer:
-16 over 125a^11b
Step-by-step explanation:
can someone help me solve this?
Answer:
Try B
Step-by-step explanation:
That's what I would choose. Sorry if it's wrong.
Please aswer this. Thank you!
Answer:
4 pairs of sock and a little bit of left over change.
Step-by-step explanation:
24.95 + 5.95x = 50
-24.95 -24.95
5.95x=25.05
/5.95 /5.95
x = 4.21
We drop the 0.21 because you cant have 0.21 pairs of socks and we get:
x=4
Answer:
About 4 pairs.
Step-by-step explanation:
50.00-24.95=25.05
5.95x5=29.75 (that is more the 25.05, so no.)
5.95x4=23.80 (Its a little bit less but not higher than the number we have left to spend.)
Could u mark brainliest, plz. Thx ☺️
Line segmentAB has vertices A(−3, 4) and B(1, −2). A dilation, centered at the origin, is applied to AB⎯⎯⎯⎯⎯. The image has vertices A′(−1, 43) and B′(13, −23).
A: 1/6
B: 1/3
C: 3
D: 6
Answer:
B: 1/3Step-by-step explanation:
It seems the coordinates given are incorrect.
It should read:
A'(-1, 4/3), B'(1/3, -2/3)This reflects the rule:
(x, y) → (1/3x, 1/3y)Correct choice is B
Answer:
B: 1/3
Step-by-step explanation:
(x,y) = (1/3x,1/3y)
forty-five hundredths as a decimal
Answer:
0.45
Step-by-step explanation:
easy
HELP pls if you know this
Answer:
58
Step-by-step explanation:
hi hi hi hi it’s b right?
Answer:B
Step-by-step explanation: yes b as the x is always 50x greater than the Y
Answer: yes it’s B. My dear!
Step-by-step explanation: hope this helps :)
will mark brainliest and rate 5/5
Answer:
20, 250
Step-by-step explanation:
just search up surface area of a square pyramid, enter the width, length, and height and it should give you: 20,250
The density, d, of an object can be found
by using the formula d -". where m is the
mass of the object and visits volume. What
is the density of an object that has a mass of
73,430 kilograms and a volume of 7 m??
4.6 isosceles and Equilateral Triangles
Step-by-step explanation:
3).20⁰
4).60⁰
180-70+70_180-140__20
what's the circumference of a circle with a diameter of 12 inches? Use 3.14 for pi
Answer:
37.68 inches
Step-by-step explanation:
Circumference = 12 x 3.14
Circumference = 37.68
Hope that helps!
3) Artemis has 6 boards cut in various lengths as shown. She wants to use 3 of them to frame
a triangular window in her new clubhouse. How many unique triangles can Artemis make with
the lengths she has? *
3 ft
3 ft
5 ft
5 ft
8 ft
8 ft
3 Triangles
4 Triangles
5 Triangles
6 Triangles
Answer:
It's either 3 Triangles
, 4 Triangles
, 5 Triangles
, or 6 Triangles
Step-by-step explanation:
Considering how many answers there are, there's a 1/4 chance for it to be any. Concluding by that it's either 3 Triangles
, 4 Triangles
, 5 Triangles
, or 6 Triangles
Solve the proportion.
b
4
=
3
6
Answer:
2
you times 3 and 4 and the divide by the 6
Answer:
it A
Step-by-step explanation:
2/3=0.6666666666666667
4/6=0.6666666666666667
so that means it A
what is the slope of the line that passes through the points (10,2) and (19,14) write your answear in simplist form
Answer: 1 1/3
Step-by-step explanation: slope is the difference in y values over the difference in the c values
Answer:
[tex] m = \frac{14 - 2}{19 - 10} \\ \frac{12}{9} \\ m = \frac{4}{3} [/tex]
the slop is equal to 4/3
What is the image of (12, 4) after a dilation by a scale factor of 1
centered at the origin?
Multiply (x+9)2 need help ASAP
Answer:
2+18
Step-by-step explanation:
(x + 9)2 distribute 2 · x = 2x and 9 · 2 = 18.
2x + 18, is the answer.
If you have any further question, please reach out to me :)
1. A circle has a radius of 3 cm. What is
its:
a. Diameter?
b. Area?
c. Circumference?
Answer:
a. 6 (3 x 2)
b. 28.26 (3.14 x 3^2)
c. 9.42 (3.14 x 3)
Hope this helped!!
Describe the transformation of f(x) = sin x to g(x) = sin x - 17 ?
Answer:
f(x) underwent a downward vertical translation to get g(x)
Step-by-step explanation:
here, we want to describe a transformation
Looking at the two equations, we can notice that the difference between the two is the -17
Practically, we have this difference as 17 subtracted from the second equation
what this mean is that there is a downward vertical translation of the first graph by 17 units to get the second graph
a) Simplify e(to the power of 5) x e(to the power of 4)
Answer:
e(to the power of 9)
Step-by-step explanation:
when you multiply variables with exponents, you have to add the exponents together.
Hi there!
Answer: [tex]\huge\boxed{\ e^9}[/tex]
Explaination:
1. e^5 multiplied by e^4 = e^(5 + 4) = e^9
Hope this helps!
Write the word sentence as an inequality.
The sum of a number n and
n
is no less
less than
than 55
An inequality is
What is the inequalities
Use the figure above to determine the height of the pickle ball when it was
hit.
The height of the pickle ball when it was hit is = h = AB = 8.5 feet
The study of angles and of the angular relationships of planar and three-dimensional figures is known as trigonometry. The trigonometric functions (also called the circular functions) comprising trigonometry are the cosecant , cosine , cotangent , secant , sine , and tangent.
Applications of Trigonometry:
Measuring grounds lots, and fields,
Measuring ground surfaces,
Making building perpendicular and parallel,
Roof inclination and roof slopes,
Installing ceramic tiles and stones,
The height and width of the building.
Given in figure
(in feet)
ED = 3
BC = 34
BD = 22
AB = h = height of the pickle ball
Therefore DC = 34 - 22 = 12
In ΔEDC
Let ∠ECD = a
tan a = ED/DC
⇒ tan a = 3/12
⇒ tan a = 1/4 (1)
In ΔABC
∠ACB = a
tan a = h/34
⇒ 1/4 = h/34 (from 1)
⇒ h = 34/4
⇒ h = 8.5
Hence height of the pickle ball is 8.5 feet.
To learn more about Applications of Trigonometry visit:
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A construction worker is placing rivets in a new bridge. He uses 42 rivets to build the first 32 feet of the bridge. If the bridge is to be 2200 feet in length, predict the number of rivets that will be needed for the entire bridge.
Answer:
42 rivets=32ft of the bridge
1 ft of the bridge =42/32 rivets
2200 ft of the bridge =42/32×2200=2887.5
2887 and half
rivets that will be needed for the entire bridge.
Calculate the volume of liquid that would fill the bowl of the glass. Show all your work.
Answer:
52.36
Step-by-step explanation:
Formula to find volume in a cone is
V = pi • radius^2 h/3
So we fill in the numbers
V = pi •
the radius is half of diameter,
The diameter is 5
So it's
V = pi • 2.5
since it's half of 5
V = pi • 2.5^2 h/3
the height is 8 so we fill it in
V = pi • 2.5^2 8/3
When calculated, you get..
52.36
The volume of the liquid which can fill the bowl of the glass (in shape of cone) with the liquid is 49.74 cm³.
What is of volume of solid?Volume of solid is the amount of quantity, which is obtained by the solid or object in the 3 dimensional space.
The volume of the cone can be given as,
[tex]V=\dfrac{1}{3}\pi r^2\sqrt{l^2-r^2}[/tex]
Here, (r) is the radius of the base of the cone and (l) is the slant height of the cone.
Here, the diameter of the cone is 5 cm. thus the radius of the cone is,
[tex]r=\dfrac{5}{2}\\r=2.5\rm cm[/tex]
The slant height of the cone is 8 cm. Thus, put the value to find the volume of cone as,
[tex]V=\dfrac{1}{3}\pi (2.5)^2\sqrt{(8)^2-(2.5)^2}\\V\cong 49.74\rm cm^3[/tex]
Thus the volume of the liquid which can fill the bowl of the glass (in shape of cone) with the liquid is 49.74 cm³.
Learn more about the volume of solid here;
https://brainly.com/question/1355179
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
HELP I NEED HELP ASAP
Suppose on average, a high school loses about 5 students each year, because they leave to attend a charter school. Which best describes this relationship?
A. A linear function because the students are decreasing by 5 each year.
B. An exponential function because the students are decreasing by 5 each year.
C. An exponential function because there is a 5% decay.
D. A linear function because there is a 5% decay.
Please help me with this question!!!!
Answer:
x = 12
Step-by-step explanation:
For trapezoid DEFG to be isosceles, measures of it's base angles must be equal.
i.e.
[tex] m\angle E =m\angle F[/tex]
[tex] (5x+15)\degree =(7x - 9)\degree [/tex]
5x + 15 = 7x - 9
5x - 7x = - 15 - 9
-2x = - 24
2x = 24
[tex] x = \frac{24}{2} [/tex]
x = 12
If the perimeter of square X is triple that of square Y, then the are of X is how many times the area of Y?
Answer:3 more than y i think srry if im wrong
Step-by-step explanation:
96:120 simply To the least
Answer:
4:5
Step-by-step explanation:
96:120
simplified:
divide both sides of colon by 24:
4:5