there are 252 numbers the contain the digit 1
Which is the correct way to show that (2, 3) is a solution to the following system of
inequalities?
y - X > - 4
2y - 5
1. 3 - 2 > -4 TRUE
2(3) – 5 < 2 TRUE
2. 3 - 2 > - 4 TRUE
2(2) – 5 < 3 TRUE
3. 2 - 3 > - 4 TRUE
2(3) - 5 < 2 TRUE
Answer:
Option 1.
Step-by-step explanation:
Note: In second inequality "<x" is missing after 5.
Consider the given inequalities are
[tex]y-x>-4[/tex]
[tex]2y-5<x[/tex]
If (2,3) is solution of given system of inequalities, then the above inequalities must be satisfy by the point (2,3).
Substitute x=2 and y=3 in the above inequalities and that should be true.
[tex]3-2>-4\Rightarrow 1>-4[/tex] True
[tex]2(3)-5<2\Rightarrow 1<2[/tex] True
Therefore, the correct option is 1.
Bryan plans to save the same amount of money for 5 weeks. He wants to buy a new sweatshirt for $95 and a beanie for $30. How much money should he save each week to buy both items?
Answer:
$25
Step-by-step explanation:
95+30= 125
125/5= 25
Please help ASAP!! Will give brainliest
Answer:
y^12/5
Step-by-step explanation:
(9x^(5)y^(16))/(45x^(5)y^(4))
y^12/5
15. Estimate the product of 110.4 x 10.2 by rounding to the nearest whole number.
A.1100
B.1210
C.1000
D.1221
Answer: A.1100
Step-by-step explanation:
Hi, to answer this question we have to round each number to the nearest whole number:
110.4 = 110 (.4 is less than 5)
10.2 = 10
The product is the result of the multiplication of both numbers:
110 x 10 = 1,100
So, the correct option is A.1100
Feel free to ask for more if needed or if you did not understand something.
I need help with this problem, if anyone could help ASAP, that would be much appreciated. In the figure below, mROP = 125° Find the measure of each arc. For each arc, write two or more complete sentences explaining which theorem or postulate you used to find your answer. Include your equations and calculations in your final answer. find mRP, MQS, MPQR, and MRPQ
Answer:
see below
Step-by-step explanation:
mROP= 125°
mSOQ= mROP= 125°
mROQ=mPOS= 180°-125°= 55°
Sum of measures of all arcs in the circle= 2π
mRP= mQS=2π*125/360=25/36π
mQR=mPS=2π*55/360=11/36π
mPRQ= half circle= 2π/2= π
mRPQ= 2π-mQR= 2π- 11/36π= 61/36π
7. Use the properties of operations to simplify this algebraic expression. Rewrite the expression by following the directions in each step. 5(x – 4) + 3x – 9x + 7 Step 1: Rewrite the subtraction operations as addition of negative numbers. (1 point) Step 2: Use the distributive property. (1 point) Step 3: Use the commutative property of addition to reorder terms so that like terms are together. (1 point) Step 4: Use the associative property of addition to group like terms. (1 point) Step 5: Simplify. (1 point)
Answer:
-x + -13
Step-by-step explanation:
Rewrite: 5(x – 4) + 3x – 9x + 7
Step 1: 5(x + –4) + 3x + –9x + 7
Step 2: 5x + -20 + 3x + –9x + 7
Step 3: 5x + 3x + –9x + -20 + 7
Step 4: -1x + -13
Step 5: -x + -13
PLEASE HELP WILL MARK BRAINLIEST The frequency f (in waves per second) and the wavelength w (in meters) of a sound traveling in the air are related by the equation fw = 343 where 343 m/s is the speed of sound in air. Calculate the wavelength of a musical note with a frequency of 240 waves per second. The wavelength is meters.
You gave us the speed and the frequency, and you need the wavelength.
You were also nice enough to remind us that (fqy)x(lng) = speed.
So . . . F x W = 343 m/s
Divide each side by F :
W = (343 m/s) / F
W = (343 m/s) / (240 / s)
W = (343/240) m
W = 1.429 meters
A parent needs up to twelve students for a game. He needs no fewer than five male students.
Let x represent the number of female students and y represent the number of male students.
Select all inequalities that model this situation.
Answer:
you need more than or equeall to 5 male students. For girls u need less than or equeall to 7 female students.
Alexis wants to make a paperweight at pottery class. He designs a pyramid-like model with a base area of 100 square centimeters and a height of 6 centimeters. He wants the paperweight to weigh at least 300 grams. What is the lowest possible density of the material Alexis uses to make the paperweight?
Answer:
1 g/cm³
Step-by-step explanation:
Volume of the model:
V=1/3bh= 1/3*100*6= 300 cm³
Density= weight/volume= 300 g/300 cm³= 1 g/cm³
The lowest density is 1 g/cm³
Answer:
1.5 !
Step-by-step explanation:
oh khan academy :))
Question 2 Comparing Text Message Plans Roger’s father also compares the text plans from the two companies. He knows that Dial It Up charges $5 for 100 text messages and Ring Ring charges $8 for 200 text messages. Part A What is the ratio of the number of text messages to the price in dollars offered by each company?
Answer:
The ratio of Dial it up is $1: 20 text messages
The ratio of Ring Ring is
$1: 25 text messages
Step-by-step explanation:
Dial it up=$5 for 100 text messages
Ring Ring=$8 for 200 text messages
What is the ratio of the number of text messages to the price in dollars offered by each company?
The ratio of Dial it up is
$5 : 100
=$5/100
=$1/20
The ratio of Dial it up is $1: 20 text messages
The ratio of Ring Ring is
$8:200 text messages
=$8/200
=$1:25
The ratio of Ring Ring is
$1: 25 text messages
Ring Ring has a cheaper text message plan compared to Dial it up
**true or false**
all functions are relations but not all relations are functions
explain
Answer:
This is true
Step-by-step explanation:
because every function creates by making an one way relation. But relation makes from both side for that reason all relation are not function
From the graph y = 10/x^2 shown below, what happens to the y- values as the negative x- values get closer to zero?
a.
They increase
c.
They stay the same
b.
They decrease
d.
cannot be determined from the graph
Answer: a
Step-by-step explanation:
if you look on the x axis and go from the far left to 0 you can see the y values go up and increase.
The y- values as the negative x- values get closer to zero is they decrease the correct option is B.
How to find the function which used to make graph?There are many tools we can use to find the information of the relation which was used to form the graph.
A graph contains data of which input maps to which output.
Analysis of this leads to the relations which were used to make it.
For example, if the graph of a function is rising upwards after a certain value of x, then the function must be having increasingly output for inputs greater than that value of x.
If we know that the function crosses x axis at some point, then for some polynomial functions, we have those as roots of the polynomial.
We are given that;
The function= y = 10/x^2
Now,
As x gets closer to 0 from the negative side, x becomes a larger negative number in magnitude. When we substitute a large negative value for x in y = 10/x^2, the square of this negative number becomes a large positive number, and the fraction 10/x^2 becomes a small positive number.
For example, if we substitute x = -2 into y = 10/x^2, we get:
y = 10/(-2)^2 = 10/4 = 2.5
If we substitute x = -10 into y = 10/x^2, we get:
y = 10/(-10)^2 = 10/100 = 0.1
Therefore, by the graphed function the answer will be they decrease.
Learn more about finding the graphed function here:
https://brainly.com/question/27330212
#SPJ7
The mean age of a herd of cows is 7.9 years. A cow that is 0.5 years old is
added to the herd. How does this cow's age affect the mean?
Answer: The new mean will be less than 7.9 years
Step-by-step explanation:
The mean is the same thing as the average. Because 0.5 is less than 7.9, the average will also decrease.
Hope it helps <3
Answer:
Hey there!
The new mean will be less than 7.9 years of age.
The mean is the average, thus if you add something below the average, the entire mean will decrease, and if you add something above the average, then vice versa.
Hope this helps :)
The tee for the fifth hole on a golf course is 355 yards from the tee. On that hole,
Marsha hooked her ball to the left, as sketched below. Find the distance between
Marsha's ball and the hole to the nearest tenth of a yard.
Answer:
The answer is "141.56 yd".
Step-by-step explanation:
In the given question an image file is missing, that can be defined as follows:
Formula:
[tex]c ^ 2 = a ^ 2 + b ^ 2 - 2 \times a \times b \times \cos C[/tex]
Let assume C is the third side:
[tex]c ^ 2 = 355 ^ 2 + 240 ^ 2 - 2 \times 355 \times 240 \times cos 16^{\circ}\\\\[/tex]
[tex]c^2=126025+57600- 170400(0.96)\\[/tex]
[tex]=126025+57600- 163584\\\\=183625-163584\\\\=20041[/tex]
[tex]c= 141.56[/tex]
So, the total distance= 141.56 yd
Choose the biconditional statement that could be based on the following: P → Q: If a quadrilateral is a parallelogram, then its opposite sides are parallel. Q → P: If its opposite sides are parallel, then a quadrilateral is a parallelogram. Question 1 options: A) P ↔ Q: A quadrilateral is a parallelogram if and only if its opposite sides are parallel. B) P ↔ Q: If a quadrilateral is a parallelogram, then its opposite sides are parallel. C) ∼P → ∼Q: If a quadrilateral isn't a parallelogram, then its opposite sides aren't parallel. D) P → P: If a quadrilateral is a parallelogram, then it's a parallelogram.
Answer:
A quadrilateral is a parallelogram if and only if its opposite sides are parallel AKA Q⇔P
Step-by-step explanation:
A biconditional statement puts a conditional statement in If and Only if form. it does not negate or switch the hypothesis or conclusion.
The symbol is q arrows going both ways (⇔) p
Hope this helps!!
Answer:
A quadrilateral is a parallelogram if and only if its opposite sides are parallel AKA QtoP
Step-by-step explanation:
A recipe requires 1.5 kilograms of eggs. How much is this in pounds? 0.15 0.7 1.5 2.2 3.3
Answer:
3.3 Pound
Step-by-step explanation:
in this problem we have to convert kilogram value to its equivalent pound value.
we know
1 KG = 2.205 Pound
since we have to find value of 1.5 kg
we multiply both LHS and RHS by 1.5
1 * 1.5 KG = 2.205 * 1.5 Pound
=> 1.5 KG = 3.307 Pound.
Since , in option value is rounded to 1 decimal place,
hence correct choice is 3.3 Pound
the equation of the straight line that passes through the point with coordinates of 0,0 and 2,8. do the same for the coordinates of 0,0 and 4,2.......0,0 and 2,10
Answer: Equation of a line passes through (0,0) and (2,8): [tex]y=4x[/tex]
Equation of a line passes through (0,0) and (4,2): [tex]y=\dfrac{1}{2}x[/tex]
Equation of a line passes through (0,0) and (2,10): [tex]y=5x[/tex]
Step-by-step explanation:
Equation of a line passes through (a,b) and (c,d) : [tex](y-b)=\dfrac{d-b}{c-a}(x-a)[/tex]
Then, Equation of a line passes through (0,0) and (2,8):
[tex](y-0)=\dfrac{8-0}{2-0}(x-0)\\\\\Rightarrow\ y=4x[/tex]
Equation of a line passes through (0,0) and (4,2):
[tex](y-0)=\dfrac{2-0}{4-0}(x-0)\\\\\Rightarrow\ y=\dfrac{1}{2}x[/tex]
Equation of a line passes through (0,0) and (2,10):
[tex](y-0)=\dfrac{10-0}{2-0}(x-0)\\\\\Rightarrow\ y=5x[/tex]
Darryl has a daily goal of earning $100 in profit. His profit is $0.72 per sandwich, and he sold 150 sandwiches today. Explain how Darryl can use the profit rate to determine how much profit he earned. Did Darryl meet his daily goal? PLEASE HELP!!!!
Answer:
yes he did
Step-by-step explanation:
150 sandwiches *$0.72= 108 dollars
yes Darryl met is goal because he earned 108 dollars in profit.
Answer:
Yes, he did multiply .72 times 150 gives you an amount of $108.
Step-by-step explanation:
PLEASE HELP ASAP!! I WILL GIVE U BRAINLIEST, PLZ SOLVE A person places a mirror between herself and a building. The mirror is 17.5 meters from the building. When she is 3 meters away from the mirror, she can see the top of the building in the corner of the mirror. If she is 2 meters tall, how tall is the building? Round your answer to the nearest hundredth. Enter your answer as a number. For example, if your answer is 14.5 meters, enter 14.5
Answer:
11.6
Step-by-step explanation:
There are 2 traingles one from the person to bottom of mirror and one from the bottom of the mirror to the top of the building
these are conjugate triangles so if the 3m represents 17.5
what does the 2 m represent?
2*17.5/3=35/3=11 2/3 so 11.6
8(5021)(3054)+(-8)(-5021)(-3054)+3
Answer:
3
Step-by-step explanation:
first two terms cancel eachother out!
Answer:
Step-by-step explanation:
8(5021)(3054) + (-8)(-5021)(-3054) + 3 = 8(5021)(3054) - (8)(5021)(3054)+3
= 0 + 3
= 3
The average rate of change for an exponential function grows by equal [blank1] per unit interval. FILL IN THE BLANK...
Answer:
a blanket huh
Step-by-step explanation:
Dividing Polynomials Divide x^5+15x^4+54x^3−25x^2−75x−34 by x+8 You must show all of your work to receive credit.
Answer:
Step-by-step explanation:
You can ask me ıf you don't understand :)
A recent survey found that 80% of jeans have back pockets, 65% have front pockets, and 48% have both back and
front pockets. Suppose a pair of jeans is selected at random and it is determined that it has front pockets. What is the
probability that a randomly selected pair of jeans with front pockets also has back pockets?
0.52
0.60
0.74
0.81
Answer:
.52
Step-by-step explanation:
its only a little bit over a 50% chance to get a front pocketed jean, then to also have back pockets is under 50% chance so when you even those it comes to .52
Answer:
.74
Step-by-step explanation:
On edge
2m^2? + 10 = 210
Answer plssss
Answer:10
Step-by-step explanation:subtract 10, divide by 2, then do sqrt of 100
A triangles angle measures are in the ratio 3: 4: 7. Find the measures of the angles
Answer:
total ratio = 3+4+7 = 14
3/14×180= 38.57°
4/14×180= 51.43°
7/14×180 = 90°
Step-by-step explanation:
please help immediately
the figure below is a semi circle with two smaller semi circles cut out from it.The radius of the small semi circle is 3cm.
find the area of the shaded portion
So basically all you have to do is find the area of one of the smaller semi circles by using the formula for the area of a circle (A=πr^2). You know that the length of the larger semi circle's radius is equivalent to 6 cm because the radius of the smaller ones are 3 cm, meaning the diameter would have to be 6 cm and in this case, the length of the smaller semi circles' diameters is equal to the radius of the big semi circle. Then you would find the area of the big semi circle again by using the area of a circle formula, but after getting the answer you would half it, obviously because it's a semi circle. Subtract the are of the smaller semi circle you found earlier from the answer you just got and that's it ;) (you wouldn't have to half the area since there are two smaller semi circles and 1/2 + 1/2 = 1 but u knew that)
Put simply, the answer would be about 88.2644 cm because circles.
Need answer ASAP please
Answer:
0.44444444444, round it to the tenth or hundredth or wherever it tells you to round the answers to.
Which must be true?
Answer:
PSC=PTC
They are the same angle
The function h(t) = –16t2 + 28t + 500 represents the height of a rock t seconds after it is propelled by a slingshot.
Answer:
The correct option is D
D) the height of the rock 3.2 seconds after it is propelled
Question:
The question is incomplete as it doesn't say what to find. I know that whole question which is given below
The function h(t) = –16t2 + 28t + 500 represents the height of a rock t seconds after it is propelled by a slingshot.What does h(3.2) represent?
A) the height of the rock 3.2 seconds before it reaches the ground
B) the time it takes the rock to reach the ground, or 3.2 seconds
C) the time it takes the rock to reach a height of 3.2 meters
D) the height of the rock 3.2 seconds after it is propelled
Solution:
h(t) represents the the height of the rock t seconds after it has propelled, where t is the time. If we take t=3.2, it means that we can find the height of the rock 3.2 seconds after it has been propelled by a slingshot, which is represented by the function h(t). Since the explanation given matches the option D, option D is the correct option.
Multiply: (x – 4)(x + 5)
Answer:
x² + x - 20
Step-by-step explanation:
Step 1: Expand using FOIL
x² + 5x - 4x - 20
Step 2: Combine like terms
x² + x - 20
[tex](x-4)(x+5)=x^2+x-20[/tex]
Hope this helps.