Answer:
x=4
Step-by-step explanation:
if AB = 2x-5 and AC = 3x-9 and AB=AC then:
2x-5 = 3x-9
-x-5=-9
-x=-4
x=4
If a=5 and b=-3, what is the value of 2ab-b2?
A. -262
B.-259
C.-39
D.-21
Answer:
I get 24...... ....... .......
(HURRY) A tank is filled with 100 gallons of water. The volume of water decreases by 10 gallons every hour.
Which equation represents this situation if V represents the volume of water left in the tank in gallons and represents the time in hours?
Answer:
100 - 10x = v
Step-by-step explanation:
Plan-
100 gallons of water to startthen -10 gallons per hourfind vSteps
[tex]100-10x[/tex] = V
(x repersents the hours)
Shaylee is determining if 6 is the solution to the equation.
Answer:
please give me brainlist and follow
Step-by-step explanation:
42 ÷ w = 7 for w = 6. First, Shaylee must substitute ( ) for ( ). To simplify, Shaylee must divide ( ) by ( ) .
Find the area of the beans I will mark the brainiest answer
Answer:
4x^2 - 12x +9
Step-by-step explanation:
The figure is a square.
the area of a square is = side^2
area = (2x-3)^2 = 4x^2-12x +9
thanks to rule of the square of a binomial, we can skip this passage:
(2x-3)(2x-3) = 4x^2-6x-6x+9 =4x^2-12x +9
Answer:
4x²−12+9
Steps:
2x(2x−3)−3(2x−3)
4x²−6−3(2x−3)
4x²−6x−6x+9
4x²−12x+9
No links GEOMETRY HELP PLEASE!! WILL MARK BRAINLEIST!
9
Answer:
16.
solution:
perimeter = 64
4l = 64
l= 64/4
l=16
Answer:
Step-by-step explanation:
since it's a square we know the 4 sides are the same length.
64 / 4 = 16
so each side is 16.... now use pythagoras to solve for GE since we know the two legs of the triangle .. both 16
16^2 + 16^2 = GE^2
512 = GE^2
[tex]\sqrt{512}[/tex] = GE
22.627417 = GE
GE = 22.6 ( rounded to nearest 10th )
400,000 + 40,000????
Answer:
440,000!!! LOL
Step-by-step explanation:
Answer:
440,000
Step-by-step explanation:
I got 440,000 as an answer because I did
400,000
+40,000
________
440,000
You could work from the ones to the hundred thousandths.
First add the zeros, then work to the thousandths. 0+0=0, 0+0=0,0+0=0,0+0=0,0+4=4, 4+0=4.
Therefore, 400,000+40,000=440,000.
What is the point-slope form
Answer:
Point-slope is the general form y-y₁=m(x-x₁) for linear equations. It emphasizes the slope of the line and a point on the line (that is not the y-intercept). Watch this video to learn more about it and see some examples. Created by Sal Khan.
Step-by-step explanation:
pls give me brainless
A circle has a radius of 8.25 feet. To the nearest square foot, what is the area of the circle?
Use the on-screen keyboard to type the correct response in the box below.
Answer: 214 ft^2
Step-by-step explanation:
A=πr^2
3.14(8.25)^2
3.14(68.0625)
213.71625
rounded to the nearest square foot: 214
Three corners of a rectangular dog park are located at the following coordinates: (–2, –1), (–2, 3), and (5, 3).
What is the total length of the fencing that is needed to go AROUND the dog park?
Answer:
22 units
Step-by-step explanation:
WILL MARK BRAINLIEST.
Answer:
y is 6 times x for the first set
not proportional for the next
Step-by-step explanation:
use the formula c=d and = to find the diameter of this circle whose circumference equals 172.7cm
Answer:
55cm
Step-by-step explanation:
How do you solve b^2=-3b
Answer:
b=0,-3
Step-by-step explanation:
b^2+3b=0
b(b+3)=0
b=0
b+3=0
b=-3
Answer:
b = 0 OR b = -3
Step-by-step explanation:
To start off with, we know that this must be a quadratic equation because there's a "^2".
Firstly, we have to bring everything over to one side of the equation. This means we have to add 3b to both sides, as we want the right-hand side to be 0.
b^2 = -3b
+3b +3b
b^2 + 3b = 0
Secondly, we have to factorise. We need to see what number goes into both "b^2" AND "3b".
That is "b".
b^2 + 3b = 0
factor out b
b(b + 3) = 0
Thirdly, we have to use the Null Factor Law to find out what b equals. The Null Factor Law states that if an equation equals 0, then one of the terms must either be 0, or the negative of the other number.
Hence, there are two answers.
b = 0
OR
b = -3
The area of a square photo frame is 144 cm2 . Find the perimeter of the photo fame, leaving your answer correct to 1 decimal place
Answer:
48 cm
Step-by-step explanation:
If it's square and the area is 144, then the sides are each 12cm (a = l x w, 144 = 12 x 12)
12cm x 4 sides = 48cm
Answer:
48
Step-by-step explanation:
The area is 144 cm².
A = s²
144 = s²
[tex]\sqrt{144\\}[/tex] = s
12 = s
photo frame is a square.
perimeter of a square = 4 * s
P = 4 *s
P = 4 (12)
P = 48
if the perimeter of an equilateral triangle is 54 in, what is the area? step by step
Answer:
A≈140.3in²
Step-by-step explanation:
A=3 /4a^2
P=3a
A bag contains 10 marbles: 3 are green, 2 are red, and 5 are blue. Brian chooses a marble at random, and without putting it back, chooses another one at
random. What is the probability that both marbles he chooses are red? Write your answer as a fraction in simplest form.
Answer:
1:40
Step-by-step explanation:
because there are two red continuous so double the no. of total marbles.
On Wednesday 72% of the customers who bought gas at a gas station made additional purchases. There were 250 customers who bought gas.
How many of these 250 customers made additional purchase?
im doing a test
Answer: 180 people
I hope i helped you! I wish you luck on the test!
Somebody help me out real fast
which of. the following events are dependent
A)tossing a coin and selcting a card from a deck
B) tossing a coin tossing a second coin
C) picking a marble out the bag replacing it, and picking another marble
D) picking a candy out a bag eating it and picking another candy
Answer:
i would say C picking a marble out the bag replacing it, and picking another marble
Step-by-step explanation:
I need help please and thanks
Answer:
hi
Step-by-step explanation:
[tex] {12}^{2} + {x}^{2} = {14}^{2} \\ 144 + {x}^{2} = 196 \\ {x }^{2} = 196 - 144 \\ {x}^{2} = 52 \\ x = 2 \sqrt{13} [/tex]
i think so
hope it helps
have a nice day
There are 1,024 players in a tennis tournament. In each round, half of the players are eliminated. Which function can be used to find the number of players remaining in the tournament at the end of x rounds?
A: f(x)=1,024(1.50)x
B: f(x)=1,024(0.50)x
C: f(x)=1,024(1.05)x
D: f(x)=1,024(0.05)x
Answer:
f(x) = 1,024(0.50)x
Step-by-step explanation:
i just took the test :)
guys i need help with this math question anyone help plzz???
Answer:
Dan made more money last month
Step-by-step explanation:
15/100 10/100 Make into decimal's and Dan's is still higher
What is the density of a 60-gram pyramid with rectangular base 5 cm x 7 cm and height 9 cm?
Answer:
A
Step-by-step explanation:
The density of the pyramid is approximately 0.57 grams per cubic centimeter.
What is Three dimensional shape?a three dimensional shape can be defined as a solid figure or an object or shape that has three dimensions—length, width, and height.
To find the density of the pyramid, we need to know its volume as well as its mass.
The volume of a pyramid is given by:
V = (1/3) × base area × height
The base of the pyramid is a rectangle with dimensions 5 cm by 7 cm, so its area is:
A = 5 cm × 7 cm
= 35 cm²
Using the formula for the volume of a pyramid, we have:
V = (1/3) × A× h
V = (1/3) × 35 cm² × 9 cm
V = 105 cm³
Now we can calculate the density:
density = mass / volume
Since the mass of the pyramid is given as 60 grams, we have:
density = 60 g / 105 cm³
To get the density in units of grams per cubic centimeter, we need to convert the units of mass and volume to grams and cubic centimeters, respectively:
density = (60 g / 1000) / (105 cm³ / 1000)
density = 0.57 g/cm³
Therefore, the density of the pyramid is approximately 0.57 grams per cubic centimeter.
To learn more on Three dimensional figure click:
https://brainly.com/question/2400003
#SPJ2
PLS HELPP!
In the diagram, PQ←→ ∥ RS←→
, and transversal t
intersects both lines.
Select all the true statements.
∡1 ≅ ∡4
because they are vertical angles
∡1 ≅ ∡8
because they are alternate exterior angles
∡1 ≅ ∡5
because they are corresponding angles
∡1 ≅ ∡3
because they are alternate interior angles
30% of the scholars are working as stagehands. 35 scholars are actors and actresses. How many students in total are in the school play, acting and working behind the scene?
Answer:
There are 50 students in total in the school play, acting and working behind the scene.
Step-by-step explanation:
Since the statement indicates that 30% of the scholars are working as stagehands, you can subtract this from 100% that represents the total amount of student in the school play to find the percentage that are actors and actresses:
100%-30%=70%
Now, as you know that 70% of the students are actors and actresses and the statement indicates that they are 35, you can use a rule of three to find the amount of students that represent 100%:
70% → 35
100% → x
x=(100*35)/70
x=50
According to this, the answer is that there are 50 students in total in the school play, acting and working behind the scene.
Please answer correctly! I will mark you as Brainliest!
Answer:
V = 40
Step-by-step explanation:
Volume of a Pyramid:
V = 1/3bh
Given:
b = 10
h = 12
Work:
V = 1/3bh
V = 1/3(10)(12)
V = 40
Uh please help me, I need a step by step answer.
Answer:
B 1296
Step-by-step explanation:
Area of a rectangle = Length × Width
Area of a triangle = [tex]\frac{1}2[/tex] × Base × Height
3 sides are rectangles with the measurements of (9mm by 21mm)
So 3(9 × 21) = 567mm^2
6 sides are rectangles with the measurements of (9mm by 9mm)
So 6(9 × 9) = 486mm^2
1 side is a rectangle with the measurements of (9mm by 15mm)
So (9 × 15) = 135mm^2
2 sides are triangles with unknown, but equal bases.
To calculate the base, you subtract 9 from 21: 21 - 9 = 12mm
Therefore the base = 12mm
The other measurement can be found by looking to the left of the triangle (9mm from the side)
So 2([tex]\frac{1}2[/tex] × 12 × 9) = 108mm^2
Add the sides up:
567 + 486 + 135 + 108 = 1296 mm^2
how can the volume of a sphere be found?
Answer:
The formula for the volume of a sphere is V = 4/3 πr³. See the formula used in an example where we are given the diameter of the sphere.
Step-by-step explanation:
plz can i get brainliest
459,450,441, find the 37th term
Answer:
135
Step-by-step explanation:
So, our first term is 459.
Lets find what our change in terms is. To do this, lets subtract the frist term by the second:
459-450
This will get you 9.
Now that we know our change per term, lets find our 37th term.
All we need to do, is take our first term, and subtract it by our change in terms times the amount of terms.(Note that we already know are 1st term, so we are multiplying the change in terms by 36, not 37. )
So this is what we can use to solve for this:
459-(9x37)
This equals
135.
Hope this helps!
Step-by-step explanation:
first term = a = 459
common difference = d = 450 - 459 = -9
nth term = an
n = -9
an = a + (n-1)d
= 459 +(37-1)-9
= 459 + (36)-9
= 459 -324
= 135
37 th term = 135
plz mark my answer as brainlist if you find it useful for you. hope this will be helpful to you .
67 people are running a race. How many different ways can there be a 1st, 2nd, and 3rd place winner?
Parallelogram FIRE
Given:
[tex]fi = (3x - 5) \: cm[/tex]
[tex]ir = (2y - 7) \: cm[/tex]
[tex]re = (x + 7) \: cm[/tex]
[tex]ef = (y + 3) \: cm[/tex]
a. What is the value of x?
b. How long is FI?
c. What is the value of y?
d. How long is EF?
e. From your answers in b and d, what is the perimeter of parallelogram FIRE?
Answer:
See the solutions below
Step-by-step explanation:
First note that the opposite side of a parallelogram are equal, hence;
For Parallelogram FIRE
fi = re
ef = ir
Given
fi = (3x-5)cm
ir = (2y -7)cm
re = (x+7)cm
ef = (y+3)cm\
a) If fi = re, then;
3x - 5 = x+7
3x - x = 7+5
2x = 12
x = 12/2
x = 6
b) Since FI = 3x - 5
FI = 3(6) - 5
FI = 18 - 5
FI = 13cm
c) Also ef = ir
y+3 = 2y - 7
y - 2y = -7-3
-y = -10
y = 10
d) EF = y+3
EF = 10 +3
EF =13cm
e) Perimeter of the parallelogram = FI + IR + RE + EF
Perimeter of the parallelogram = 13cm + 13 + 13cm + 13cm
Perimeter of the parallelogram = 52cm