Answer:
x=-2,y=-2
Step-by-step explanation:
x+y=-4
x=-4-y--(3)
substitute (3) in (1)
5(-4-y) -3y=-4
-20-5y-3y=-4
-8y=16
y=16/-8
y=-2
substitute y in (3)
x=-4-(-2)
x=-2
Unit 2 Test
Which postulate can be used to prove that the following triangles are congruent?
A) ASA
B sss
C SAS
DAAS
Please help i'm not doing good in math i will give you the crown
Answer:
B
Step-by-step explanation:
The format for quadrant 2 would be (-,+) and answer choice be fits that because it is(-3,2)
how many hundreths is 8.3
Answer:
3 tenths and 0 hundreths
Step-by-step explanation:
3 is in the tenths place.
So 3 tenths.
There is no value in the hundreths place
So 0 hundreths
During a blind taste test of 8 different
sodas, some people were asked to choose
a favorite. Each dot represents one person.
Taste Test
.
A
B
С
F
G
H
D E
Soda
If the ratio of people choosing B to people
choosing H stays the same, how many
people will choose H if the number of people
who choose B increases to 20?
F 6
G4
H5
J 3
Answer:
the answer is 5
Step-by-step explanation:
the ratio is 4:1 so if you increase B to 20 you divide by 4 to get 5.
20:5=4:1
Rosa has rows of plants. There are plants in each row. Each plant has flowers. How many flowers are there in all?
Answer:
There will be total 855 flowers.
Step-by-step explanation:
Suppose there are 9 total rows and each row has total 19 plant and each plant has 5 flowers.
Then the number of flowers can be found out by simply multiplying
9*19*5= 855
There will be total 855 flowers (if the above given numbers assumed are the same as the original question)
IF the numbers are changed from the above assumed numbers even then the answer can be obtained by simply multiplying the numbers to get the total numbers of flowers.
Please no links :) giving brainliest, try to answer as soon as you can :)
Answer:
102,9 cm^2
Step-by-step explanation:
First of all we can find the area of the two rectangles at the sides of the figure
A rectangle = length x width = 8 x 4 = 32 cm^2
the rectangles are two so:
32 x 2 = 64 cm^2
for the figure in the center we can proceed like this: we can initially assume that also it is a rectangle, so we have to find the length
length = 16-8 = 8 cm
A = 8^2 = 64 cm^2 (so we have discovered that is a square)
if we look we can see that there is also a semicircle that is not part of the figure. We have to find its area and subtract it to the area of the square
A semiciricle = (radius^2 π)/2
radius = 8/2 = 4 cm
A semicirlce = (4^2) π/2 = 25,13 cm^2
64 - 25,13 = 38,87 cm^2
At least we have to added up this value to the area of the two rectangles
total area = 38,87 + 64 = 102,87 = 102,9 cm^2
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.
Answer:
384
Step-by-step explanation:
if each person who knows it tell 2 people then its doubling every hour
and for 8 hours the equation is
3x[tex]2^{7}[/tex] (to seventh power because 1st hour already happened)
3x2x2x2x2x2x2x2
6x2x2x2x2x2x2
12x2x2x2x2x2
24x2x2x2x2
48x2x2x2
96x2x2
192x2
384
Ty can jump rope at a rate of 6 jumps every 3 seconds. What is Ty's jump-roping rate in
jumos per minute? Explain your thinking.
Answer:
120 Jumps per Minute
Step-by-step explanation:
3 Seconds per jump
So we do 60 (seconds in a minute) / 3 (seconds)
We get 20, this is how many times we do the 6 jumps.
Then we simply do 6x20 to get 120 jumps per minute!
Pleaseeee , I’ll give you Brainlest:)
Answer:
30 days
Step-by-step explanation:
Answer:
30
Step-by-step explanation:
10^12=1000000000000
1000000000000/24=4.66666666_
that means 4 and a half days but put in 4.5.(I didn't feel like putting the rest of the work i forgot, its 30
Fred borrows $2710 at 3.8% simple interest per month. When Fred pays the loan back 3 months later, what is the total amount that Fred ends up repaying?
if john wallked 50 miles than mira,how many miles do you think mira walked if they both walked a total of 290 miles.
Answer:
Mira = 95 miles
Step-by-step explanation:
Given
John walked 50 miles than Mira
The total miles walked is 290
To find
If John walked 50 miles more than Mira and the total miles walked including Mira is 290, then divide 290 by both of them. Once that is done, don't evenly distribute the miles to them. Because remember, John walked 50 miles more than Mira. So we just distribute this with John having 50 miles more. By subtracting 50 from Mira's share and give it to John
Solve
Divide 290 by 2290 ÷ 2 = 145
Subtract 50 from Mira's share and give it to JohnMira's 145 - 50 = 95
Add that 50 to John's 145John's 145 + 50 = 195
Therefore, John ran 195 miles and Mira ran 95 miles.
Write an equation in the form of y= mx + b that represents this linear function.
Answer:
y = -4x+1.5
Step-by-step explanation:
I just plugged it into desmos honestly :/
Determine the equation of the midline of the following graph. ITS NOT HARD I JUSST DONT KNOW IT!!!!HELP PLEASE.
Answer:
y=1
Step-by-step explanation:
it is in the middle of the maximum and minimum.
Whats the best grunge rock band?
Answer:
Matallica
Step-by-step explanation:
It's my personal favorite but also Nervana....
Answer: Nirvana
Step-by-step explanation: hoped this helped :)
Nancy has to find the reflection of a point across both the x- and the y-axes. Using what you've learned so far about reflections across the x-axis and reflections across the y-axis, can you come up with a rule for what happens to the signs when you reflect a point across both axes?
Answer:
Step-by-step explanation:
All she needs to know is that a reflection across the x-axis is when the x coordinate stays the same and the y-coordinates change.
Hope this helped.
Answer:
To find the reflection of a point across the x-axis and the y-axis, change the signs of both the x-coordinate and the y-coordinate.
Step-by-step explanation:
!!edmentum answer!!
what is the domain? thank you
Answer:
D: {0 ≤ x ≤ 6.25}
Step-by-step explanation:
6.25 is an approximation
Can someone help on really stuck
a number is two more than another number in number form?
From the information in the word problem we are able to set up the following inequality:
3y + 2 - y = 12 | where x is the larger number of two numbers in a set (x, y)
We know this because the problem states that [x = 3y + 2] or 3 times the smaller number plus two.
We also know that x - y = 12.
So, we substitute x in [x - y = 12] with 3y + 2 that we found out above, and we get the following:
3y + 2 - y = 12
Now, we solve the inequality
3y + 2 - y = 12
-> subtract 2 from both sides :: 3y - y = 10
-> subtract y from 3y :: 2y = 10
-> divide both sides by 2 :: y = 5
So now we have y, the smaller number, which is equal to 5. Next, to find x we simply plug y=5 back in to either the value of x, [3y + 2], or the inequality of x - y = 12. I will show both:
x - y = 12
-> substitute y for 5 :: x - 5 = 12
-> add 5 to both sides :: x = 17
OR
3y + 2 = x
-> substitute y with 5 :: 3(5) + 2 = x
-> multiply 3, 5 :: 15 + 2 = x
-> add 15, 2 :: 17 = x
So there you have it:
x = 17 , y = 5
You can go back and use these values to check your answer and make sure they work with the word problem.
Remember to look for the setup to an inequality in the word problem. Anything that says BLANK times this number, or 4 less than that number, is trying to set you up with an inequality problem.
(just another form of the equation)
brainliest will be appreciated as well
Find the number of terms for this polynomial - 17x ^ 5 + 17x ^ 3 - 18
Answer:
I love algebra anyways
the ans is in the picture with the steps
(hope it helps can i plz have brainlist :D hehe)
Step-by-step explanation:
Answer:
−1(175−173+18) (that sould be the solution)
Hope that helps
2496 of what number is 6?
24% of is 6.
54.98 in expanded form
Answer:
50 + 4 + .9 + .06
Step-by-step explanation:
Look at the given figure. If the triangles are congruent, give the theorem. If not, select not congruent.
a) SSA
b) SSS
c) SAS
d) Not Congruent
Answer:
SSS.
Step-by-step explanation:
The 3 sides are congruent . The ones that are marked and the middle line which is common to both triangles.
Which multiplication problem is equivalent to 2 3/4÷3 1/3?
A. 11/4 ⋅ 10/3
B. 4/11 ⋅ 10/3
C. 11/4 ⋅ 3/10
D. 4/11 ⋅ 3/10
Mr. Tan bought a mobile phone at a discount of 25 %. The original price of mobile phone was of $400. How much did he pay for the mobile phone.?
Answer:
$300
Step-by-step explanation:
$400 is 100% of the price
25% is a quarter of 100%
A quarter of 400 is 100 so the discount was $100
400-100 =300
30 POINTS!!! PLEASE ANSWER THE QUESTIONS IN THE PICTURES!!! EACH QUESTION HAS 2 ANSWERS!!!!
Answer:
Step-by-step explanation:
I believe the first question is 1.9
second: 48.2
sorry didn't understand the third one :(
good luck in your exam!Help me pls. Which decimal is less than 0.8?
Answer: 0.79
Step-by-step explanation: for example 79 is less than 80.
Need help need help need help need help
Answer:
Step-by-step explanation:
I believe that since both circles C & D are congruent, and TU is bisected into TW and WU, PS = 7.4/2 = 3.7
PS = 3.7
Answer:
it is 6.9
Step-by-step explanation:
i took the test
what is 4x – 97 + 12 – x = -80.5
Answer: x - 1.5
4x – 97 + 12 – x = -80.5
3 x - 85 = -80.5
3 x - 85 +85 = -80.5 + 85
3x = -80.5 + 85
3x = 4.5
x = 1.5
Step-by-step explanation: hope this helps
Answer:
x=1.5
Step-by-step explanation:
4x-97+12-x=-80.5
Combine like terms
-97+12=-85
4x-x=3x
now you have 3x-85=-80.5
add 85 to both sides and now you have
3x=4.5
Now divide 3 to both sides and you get x=1.5
(-9)5 ∙ (-9)7
what's the answer
Answer:
2835
Step-by-step explanation:
-9×5= -45
-9×7= -63
-45×(-63)=2835
Practice question — Given the trapezoid to the right find the length of legs in the following isosceles trapezoid
Given:
A figure of an isosceles trapezoid with bases 18 and 24, and the vertical height is 4.
To find:
The legs of the isosceles trapezoid.
Solution:
Draw another perpendicular and name the vertices as shown in the below figure.
From the figure it is clear that the AEFD is a rectangle. So,
[tex]EF=AD=18[/tex]
Since ABCD is an isosceles trapezoid, therefore in triangle ABE and DCF,
[tex]AB=DC[/tex] (Legs of isosceles trapezoid)
[tex]AE=DF[/tex] (Vertical height of isosceles trapezoid)
[tex]m\angle AEB=m\angle DFC[/tex] (Right angle)
[tex]\Delta ABE\cong \Delta DCF[/tex] (HL postulate)
[tex]BE=CF[/tex] (CPCTC)
Now,
[tex]BE+EF+FC=BC[/tex]
[tex]2BE+18=24[/tex]
[tex]2BE=24-18[/tex]
[tex]2BE=6[/tex]
[tex]BE=3[/tex]
Using Pythagoras theorem in triangle ABE, we get
[tex]Hypotenuse^2=Perpendicular^2+Base^2[/tex]
[tex](AB)^2=(AE)^2+(BE)^2[/tex]
[tex](AB)^2=(4)^2+(3)^2[/tex]
[tex](AB)^2=16+9[/tex]
[tex](AB)^2=25[/tex]
Taking square root on both sides, we get
[tex]AB=\pm \sqrt{25}[/tex]
[tex]AB=\pm 5[/tex]
Side length cannot be negative. So, [tex]AB=5[/tex].
Therefore, the length of legs in the given isosceles trapezoid is 5 units.