Answer:
(3, - 1 )
Step-by-step explanation:
Given the 2 equations
2x - 3y = 9 → (1)
x + 2y = 1 → (2)
Rearrange (2) expressing x in terms of y by subtracting 2y from both sides
x = 1 - 2y → (3)
Substitute x = 1 - 2y into (1)
2(1 - 2y) - 3y = 9
2 - 4y - 3y = 9
- 7y + 2 = 9 ( subtract 2 from both sides )
- 7y = 7 ( divide both sides by - 7 )
y = - 1
Substitute y = - 1 into (3) for corresponding value of x
x = 1 - 2(- 1) = 1 + 2 = 3
solution is (3, - 1 )
What is the solution of the equation 56 = 2.8y?
A. y = 20
B. y = 156.8
C. y = 2
D. y = 58.8
PLEASE NO LINKS I REALLY NEED THIS ANSWERED On a math test, Larissa was asked to find the points where the following equations intersect.
y = x2+ x – 4
y = -2x + 6
Which line did Larisa make a mistake, please explain
Her work is show below
Answer:
just use demos graphing calculator
Step-by-step explanation:
PLEASE HELP!!! Classify each real number. List all the subsets in which the number belongs.
Answer:
9^3 is Natural, Whole, Integer, and Rational
7/4 is Rational
√3 is Irrational
0 is Whole, Integer, and Rational
Thinking Process:
Alright, to start, with 9^3, it equal 729. This is a natural, whole, integer, and rational number. It is a natural number because it follows the counting (1, 2, 3...etc). Because of this, it is also part of all of the other rational categories as well.
With the next one, 7/4, this equals 1.75. It is not a natural, whole, or integer number because it is a decimal. However, it is rational, because it is still definite.
Next, with √3, this equals 1.73205.... It is irrational because it is not definite as it is a sequence of numbers that go on forever, being unpredictable in nature.
Last is 0, it is not a natural number because it does not follow the counting (1, 3, 3...etc). But it is whole because it follows the counting (0, 1, 2, 3...etc). This is along with it being an integer and rational because of this.
ASAP Right answer only please??!!!!
Answer:
The answer is 17 or x is 17
Someone help!
If there are 365 days in a year and you buy 365 $15 Starbucks gift cards. How much will that cost?
Answer:
If you buy a 15 dollar gift card every day for a year, it will cost $5,475.
Just take the price, multiply it by the amount.
Answer:
$5475
Step-by-step explanation:
365 X 15 =
(365 x 10) + (365 x 5) =
3650 + 1825 =
$5475
Is the number √5 rational, irrational, both rational and irrational, or neither rational nor irrational?
Hi there!
»»————- ★ ————-««
I believe your answer is:
The square root of 5 ([tex]\sqrt{5}[/tex]) is irrational.
»»————- ★ ————-««
Here’s why:
A rational number is a number that can be rewritten as a fraction of two integers with a nonzero denominator. Rational numbers include integers, fractions, terminating decimal, or repeating decimals.A square root that is perfect would be rational. A non-perfect square root is irrational.⸻⸻⸻⸻
Since the square root of 5 is not a perfect square, it would be irrational.
⸻⸻⸻⸻
»»————- ★ ————-««
Hope this helps you. I apologize if it’s incorrect.
A fountain is made up of two semicircles and a quarter circle. Find the perimeter of the fountain. Round to the nearest hundredth.
Answer:
the perimeter to the nearest hundred is 256
Please help me quick please solve in inequality form
Answer:
Answer OPTION C
AT LEAST... means that she needs 80% and more
Meaning its must be equal to 80% or greater than 80%
Average has to do with Mean.
Her mean would have to be
The sum of the 3 last algebra tests plus the unknown one she's supposed to have to complete 80%
So
Thatll be
80+75+86 + x /(4) ≥ 80
241 + x/(4) ≥80
Option C
easy short math question plz help me
Answer:
Class
YES NO TOTAL
YES 26 9 35
Country
NO 37 26 63
TOTAL 63 35 98
Andrew sold 60 baseball cards to a friend . This was 80% of Andrews total baseball card collection. How many total baseball cards where in Andrews collection ?
Answer:
75
Step-by-step explanation:
We know that 80% of Andrew's (former) baseball card collection is 60. Thus, We divide 60 by 80% (equal to 0.8) to obtain [tex]\frac{60}{0.8}=75[/tex].
Answer:
In total there were 75 cards in Andrews collection.
Step-by-step explanation:
We know that 60 is 80% of the total amount of cards Andrew has. Therefore, all we have to do to find the total number of baseball cards is to divide 60 by 80 to find 1% and then multiply the result by 100 to get 100% (the total amount of cards). And so we get...
60 / 80 x 100 = 60 / 0.8 = 75
PLEASE HELP?? thank you!!
find n
answer has to be in simplest radical form!
Answer:
[tex]\sqrt{3}[/tex]
Step-by-step explanation:
look up a 30 60 90 triangle
If a histogram is right skewed, which will be greater the mean or the median? Type a single word answer in the space
provided, for example if the answer is mode, type mode.
Answer:
Mean is greater
Step-by-step explanation:
For a skewed distribution, then the tail is longer to one side from the center than to the other. In a right skewed distribution, the tail is longer to the right.
When a distribution is skewed, the mean will be closer to the tail Than the median. Therefore. For a right skewed histogram, the mean is closer to the tail of the histogram and hence closer to the right. Once this happens, values closer to the right of a distribution are higher (number line). Thus the mean will be greater than the median.
which divisor of -2x^3 - 5x^2 + 4x - 2 results in a remainder of -14
Answer:
[tex]f(x) = -2x^3 -5x^2 +4x -2\\option 1 : x+2 \\f(-2) = -2(-2)^3 -5(-2)^2 +4(-2)-2 = 16 -20-8-2= -14\\\\\\option 2: x+3\\f(-3) = -2(-3)^3 -5(-3)^2 +4(-3) - 2 = 54 -45 -12-2 = -5\\\\option 3: x-2\\f(2) = -2(2)^3-5(2)^2-4(2)-2=-16 -20-8-2=-46\\\\option4 :x-3\\f(3) = -2(3)^3 - 5(3)^2-4(3)-2 = -54-45-12-2=-113\\[/tex]
option 1: x + 2
it takes 5 hours 15 mins to get to Glasgow by train from London. Glasgow is 403miles from London? what is the average speed of the time?
please explain step by step
Answer:
London to Glasgow FAQs
How long does it take to travel from London to Glasgow by train? The journey takes 4 hours 29 minutes on average.
The journey takes 4 hours 29 minutes on average.
Find the value of x.
с
130°
Answer:
[tex]x = \frac{130}{2} = 65[/tex]
What is the area of the following circle?
Either enter an exact answer in terms of 7 or use 3.14 for TT and enter your answer as a decimal.
d=10
units?
Answer:
78.5 is the answer
10/2 = 5
5 x 5 = 25
3.14 x 25 = 78.5
please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!
Answer:
BC = 1.71
Step-by-step explanation:
SOHCAHTOA
Cosine = Adjacent over Hypotenuse
cos70 = ? / 5
? = 5*cos70
? = 1.7101
Janet is comparing prices of bottled drinks. She finds one bottle of water that costs $1.92 and contains 12 ounces. She then finds one bottle of soda that costs $2.40 and contains 16 ounces. Which bottle costs less per ounce?
it a short answer response
Answer:
1 ounces of water= $0.16
1 ounces of soda= $0.15
Water costs $0.16 per ounces while soda costs $0.15 per ounces which means soda costs less than water per ounces.
WILL GIVE BRAINLIEST!
Ify is floating freely in outer space. The gravitational forces pulling on her body are negligible except for the forces from a nearby asteroid (a) the nearest planet (p) and the nearest star (s) The asteroid, planet, star, and Ify all lie in the same plane.
a= (2,4)
p=(-1.-3)
s=(8,2)
Answer:
The magnitude of the net gravitational force acting on Ify is 9.1 newtons.
Ify is getting pulled in a direction of 6.2 radians.
Step-by-step explanation:
The vector g = (9,-1) describes the net gravitational force acting on Ify.
We can find the magnitude of g, using the Pythagorean theorem.
Tan?cos? Sin? What is the m
Answer:
45º
Step-by-step explanation:
Since we know the relatiionship of a 45-45-90 degree triangle, we can go two ways. Either we can use this to find CA and get the tangent of (6/6) or we can go straight to it. The hypotenuse in a 45-45-90 is always 6√2 and we know it is a right triangle so we can confirm this. So, measure of angle B is 45º.
Plz answer i'll give brainliest but it has to be right.
Find the value of x in the triangle shown below.
ac
5
help me pwease I am stuck
Answer:
he x-axis, and Number of Potatoes on the y-axis. 5 pounds is 12 potatoes; 10, 24; 15, 36.
Step-by-step explanation:
Complete the equation to show the relationship between the price and the weight w . P= _ w
Answer:
[tex]p = 0.3w[/tex]
Step-by-step explanation:
Given
[tex]w \to weight[/tex]
[tex]p \to price[/tex]
[tex](w,p) = (12,3.60)[/tex]
Required
The equation
First, we calculate the unit ratio (k)
This is calculated by dividing price by weight
[tex]k = p/w[/tex]
[tex]k = 3.60/12[/tex]
[tex]k = 0.3[/tex]
Recall that: [tex]k = p/w[/tex]
Make p the subject
[tex]p = kw[/tex]
Substitute [tex]k = 0.3[/tex]
[tex]p = 0.3w[/tex]
Marking brainliest if you answer all 3 of them n
1) Equation: y = 5x + 1
Missing Value: 51
2) Equation: y = 4x
Missing Value: 28
3) I have no idea for this one... sorry!
Can someone help pls
Answer:
Age of Sean = 15
Age of Ricki = 10
[tex]Ratio \ of \ their \ age = 15 : 10 = 3 : 2[/tex]
[tex]Sum \ of \ the \ ratio = 5[/tex]
[tex]Let \ number\ of sweets \ be \ x[/tex]
[tex]Number \ of \ sweets \ Sean \ got = \frac{3}{5} * x\\\\48 = \frac{3}{5} * x\\\\x = \frac{48*5}{3} = 80[/tex]
[tex]Total \ number \ of \ sweets = 80\\Sean \ got \ 48\\Number \ of \ sweets \ Ricki \ got = 80 -48 = 32[/tex]
Ans : a) 3 : 2
b) 32 sweets
c) 80 sweets
Determine the perimeter of the shape below
Answer:
43.566 ft
Step-by-step explanation:
Straight sides: 2 long 1 short
2 x 10 + 8 = 28 ft
Curved side: Remember that the circumference of a circle is 2πr or πd.
Since this is a semicircle, divide the circumference you get by 2.
From the diagram: d = 8
total circumference = 8 x π = 8π
semicircle = 8π ÷ 2 = 4π ft
Total perimeter
= (28 + 4π) ft
= (28 + 12.566) ft (5sf)
= 43.566 ft (5sf)
The radius of the hemicircle is r = 8/2 cm = 4 cm.
So the perimeter of the hemicircle part is
[tex]\pi \times r \: = (22 \div 7) \times 4 = 12.57 \: cm[/tex]
The perimeter of the rectangular part = 10+10+8 = 28 cm.
So, the final answer is
[tex]28 \: cm + 12.57 \: cm = 40.57 \: cm[/tex]
If two triangles are congruent, then all three___and all three___are congruent.
Answer:
Angles and Sides (or sides and angles, doesn't matter).
Step-by-step explanation:
Congruent triangles all have the same angle measures and side lengths.
Please mark me as brainliest!!!!!!!
What is the value of m in the equation 1/2 m - 3/4 n = 16, when n=8?
20
32
44
48
Answer:
48 567i900yhhf free in nkko of h
Answer:
answer is 44
Step-by-step explanation:
3/4ths of 8 is 6, 1/2m + 6 = 16 then becomes 1/2 m = 22 and m = 44
What is the area of the figure below?
Answer:
31.5
Step-by-step explanation:
hope this helps