Solve the system of linear equations by substitution for x and y
1. X+y=7
Y=-3
2. 3x+4y=-10
X=-3y
Answer:
(10,5)
Step-by-step explanation:
●x+(-3)=7
x=7+3
x=10
●3x+4y=-10
3(-3y)+4y=-10
-6y+4y=-10
-2y=-10
y=5
draw a number line and represent the following rational numbers on it:1:3/4
Answer:
It is your answer please mark me brainlist
Step-by-step explanation:
follow
Suppose a fair coin is tossed and the spinner below is spun one time. What is the probability of flipping heads and spinning a number greater than 2?
Answer:
3
Step-by-step explanation:
Answer:
3/10
Step-by-step explanation:
For each sentence, write an equation.
Solve the equation to find the number.
a) A number divided by 6 is 9.
b) A number divided by -4 is -3.
c) A number divided by -5 is 7.
A TV station executive is planning the new lineup for next season's shows. On Monday nights, there will be 6 sitcoms and 6 dramas, for a total of 372 minutes of programming, not counting commercials. On Tuesday nights, he has scheduled 2 sitcoms and 6 dramas, for a total of 288 minutes of non-commercial programming. All sitcoms have the same length and all dramas have the same length. How long is each type of show?
Answer:
x = length of sitcoms = 21 minutes
y = length of dramas = 42 minutes
Step-by-step explanation:
Let
x = length of sitcoms
y = length of dramas
6x + 6y = 372 (1)
2x + 6y = 288 (2)
Subtract (2) from (1) to eliminate y
6x - 2x = 372 - 288
4x = 84
x = 84/4
x = 21
Substitute x = 21 into (1)
6x + 6y = 372
6(21) + 6y = 372
126 + 6y = 372
6y = 372 - 126
6y = 246
y = 246/6
y = 41
x = length of sitcoms = 21 minutes
y = length of dramas = 42 minutes
Hello, this isn't really a question, but a tip!
So if your trying to find a perfect square and you given 225 you would just find the square root and if its a whole number then its a perfect square. If your asked to find the number that would make the perfect square that is asked for, you would take each number and multiply it by it self and then you can find your perfect square!!
Answertank cu
Step-by-step explanation:
Answer:
Ok, thanks for the tip you give keep safe.GUYS I NEED HELP ASAP!!
I believe this is correct! Good luck :)
Theoretical Probability:
P(rolling a 2) = 16.7%
P(rolling a 5) = 16.7%
P(rolling 2 or 3) = 33.4%
P(greater than 4) = 33.4%
P(3 or less) = 50.1%
Experimental Probability:
P(rolling a 2) = 20%
P(rolling a 5) = 6%
P(rolling 2 or 3) = 36%
P(greater than 4) = 24%
P(3 or less) = 54%
Explanation:
Theoretical probability can be calculated based on the idea that each of the six numbers on the die has an equal chance of being rolled and all numbers' probabilities total to 100%. Experimental probability is based on the outcomes of your experiment (rolling the dice yourself).
When finding the probability of rolling a number or another number (for example, rolling a 2 or 3), just add the probabilities together (You rolled 2 ten times and 3 eight times, so the experimental probability of rolling a 2 or 3 is 18/50 = 36%)
(5-2x^4)(5+2x^4)
pls
Answer:
25 -4x^8
Step-by-step explanation:
Im pretty sure its this! <3 Hope it helped.
Answer: =−4[tex]x^{8}[/tex]+25
The 8 is an exponent
Step-by-step explanation:
(5−2x4)(5+2x)
=(5+−2)(5+2)
=(5)(5)+(5)(2[tex]x^{4}[/tex])+(−2
=25+10[tex]x^{4}[/tex]−10
=−4[tex]x^{8}[/tex]+25
There were 845 students using Schoology in IRSD in 2017. In 2016 , there were 608 students using Schoology in the district.
51.5% of all users access Schoology on mobile devices. How many users used mobile devices in 2016?
313.120 (round as you would like)
Step-by-step explanation:
First you take the 51.5%, and divide it by 100, you should get 0.515. Now multiply with the 608 students, your answer should be 313.20, Ta Da!!! its right!! P.S You should also round (to 313) Please make this brainliest
Answer:
THIS WEBSITE SUCKS MY
Step-by-step explanation:
F IT
The circumference of a pizza is 75 inches. What is the approximate radius of the pizza?
Answer:
r = 11.94
Step-by-step explanation:
Circumference Formula:
C = 2πr
75 = 2(3.14)r
75 = 6.28r
r = 75/6.28
r = 11.94
Need answer plz help! No links :(
Yolonda withdrew 60 dollars from her checking account.Write a signed number to represent this change in her account.
Answer:
$ 60.00
Step-by-step explanation:
.
Roy made 7 identical sundaes using 5 pints of ice cream. How much ice cream did Roy use for each sundae?
Suppose that P(n) is a propositional function. Determine for which nonnegative integers n the statement P(n) must be true if a) P(0) is true; for all nonnegative integers n, if P(n) is true, then P(n 2) is true. b) P(0) is true; for all nonnegative integers n, if P(n) is true, then P(n 3) is true. c) P(0) and P(1) are true; for all nonnegative integers n, if P(n) and P(n 1) are true, then P(n 2) is true. d) P(0) is true; for all nonnegative integers n, if P(n) is true, then P(n 2) and P(n 3) are true
Solution :
a). [tex]$P(0)$[/tex] is true
Then ,[tex]$P(0+2)=P(2)$[/tex] is true.
[tex]$P(2+2)=P(4)$[/tex] is true
[tex]$P(4+2)=P(6)$[/tex] is true.
Therefore, we see that [tex]$P(n)$[/tex] is true for all the even integers : [tex]$\{0, 2,4,6,...\}$[/tex]
b). [tex]$P(0)$[/tex] is true
Then ,[tex]$P(0+3)=P(3)$[/tex] is true.
[tex]$P(3+3)=P(6)$[/tex] is true
[tex]$P(6+3)=P(9)$[/tex] is true.
Therefore, we see that [tex]$P(n)$[/tex] is true for all the multiples of 3 : [tex]$\{0, 3,6,9,12,...\}$[/tex]
c). [tex]$P(0)$[/tex] and [tex]$P(1)$[/tex] is true, then [tex]$P(0+2)=P(2)$[/tex] is true
[tex]$P(1)$[/tex] and [tex]$P(2)$[/tex] is true, then [tex]$P(1+2)=P(3)$[/tex] is true.
[tex]$P(2)$[/tex] and [tex]$P(3)$[/tex] is true, then [tex]$P(2+2)=P(4)$[/tex] is true.
So, we observe that [tex]$P(n)$[/tex] is true for all the non- negative integers : [tex]$\{0, 1,2,3,4,5,6,...\}$[/tex].
d). [tex]$P(0)$[/tex] is true,
So, [tex]$P(0+2)$[/tex] and [tex]$P(0+3)$[/tex] is true or [tex]$P(2)$[/tex] and [tex]$P(3)$[/tex] is true.
Now, [tex]$P(2)$[/tex] is true.
Again, [tex]$P(2+2)$[/tex] and [tex]$P(2+3)$[/tex] is true or [tex]$P(4)$[/tex] and [tex]$P(5)$[/tex] is true.
Now, [tex]$P(3)$[/tex] is true.
Again, [tex]$P(3+2)$[/tex] and [tex]$P(3+3)$[/tex] is true or [tex]$P(5)$[/tex] and [tex]$P(6)$[/tex] is true.
Thus,
[tex]$P(n)$[/tex] is true for all the non- negative integers except 1 : [tex]$\{0, 2,3,4,5,6,...\}$[/tex].
can someone help me with the picture I put above please
Answer:
9
Step-by-step explanation:
3x+8=35
3x=27
x=9
Which solid has two faces, zero lateral faces, two bases, zero vertices, and zero edges?
cube
cone
sphere
cylinder
Answer:
cylinder
isn't this eighth grade geometry? i thought u were in high school
Hester sells televisions. She earns a fixed amount for each television and an additional $15 if the buyer gets an extended warranty. If Hester sells 15 televisions with extended warranties, she earns $1,275. How much is the fixed amount Hester earns for each television?
Answer: [tex]\$ 70[/tex]
Step-by-step explanation:
Given
Hester get a fixed amount and an additional $15 for an extended warranty
Suppose x is the amount of fixed amount
for 15 television sale, the price is $1275
Thus, we can write
[tex]\Rightarrow 15(x+15)=1275\\\Rightarrow x+15=85\\\Rightarrow x=\$70[/tex]
Therefore, the fixed amount of television is [tex]\$70[/tex]
Help me fast I have 30 min to finish the testtt!!!!!!!!!
Can y’all guys give me a list websites to wach anime on that are not bloked by the school cause please thank u
Answer:
it depends on what your school district restricts
Step-by-step explanation:
PLEASE HELP. I AM STUCK!!!
Answer:
Step-by-step explanation:
Midsegment means it's the middle, or half-way . It chops the sides into even parts. The line that's the midsegment is going to be parallel to the base and half the size of the base. In other words, double the midsegment and that's equal to the base. Then, just solve for x.
The weather forecast was calling for 8 inches of snow. It actually only snowed 2 1/4 inches. How far off was the forecast’s prediction?
pls help ill give brainliest. the red isnt part of it was just how it was screenshot.
Find the area of a circle with 7cm radius .
Use the value 3.14 for π, and do not round your answer.
Be sure to include the correct unit in your answer.
Answer:
153.9
Step-by-step explanation:
hope it helps
A back account pays an interest rate of 6% every 1 year. You deposit $5000 into the account. How much money will you have in 5 years?
A. $7092
B. $3449
C. $3670
D. $6691
Answer:
C: $6691
Step-by-step explanation:
This problem is one in compound interest. The general formula is shown below. The principal, P, is $5000, the annual interest rate, r, is 0.06 (expressed as a decimal fraction), and the number of years, t, is 5 years: A represents the Amount after 5 years:
A = P(1 + r)^t becomes A = ($5000)(1 + 0.06)^5, or
A = (5000)(1.06)^5 = $6691.12 (Answer D)
Solve for t. You must write your answer in fully simplified form.
−19= 7t
Answer: dot know srry
Step-by-step explanation:
5x – 9 > 8 + 5x Find the solution set:
Answer:
Here you go, it's In the attachment
multiply:- 4a^2 - 6a + 5 by 3a + 2.
Ans it fast plz.
i will mark u as brainliest.
Answer:
4a^2 + 9a + 10
Step-by-step explanation:
First we distribute
-4a^2 + (−6a) + (5)(3a) + (5)(2)
-4a^2 - 6a + 15a + 10
Then we combine like terms
4a^2 has no like terms, so it cannot be added onto anything else.
We add -6a to 15a
15a - 6a = 9a
4a^2 + 9a + 10
Answer:
Simplifying
(6a + -8)(4a2) = 0
Reorder the terms:
(-8 + 6a)(4a2) = 0
Remove parenthesis around (4a2)
(-8 + 6a) * 4a2 = 0
Reorder the terms for easier multiplication:
4a2(-8 + 6a) = 0
(-8 * 4a2 + 6a * 4a2) = 0
(-32a2 + 24a3) = 0
Solving
-32a2 + 24a3 = 0
Solving for variable 'a'.
Factor out the Greatest Common Factor (GCF), '8a2'.
8a2(-4 + 3a) = 0
Ignore the factor 8.
Subproblem 1
Set the factor 'a2' equal to zero and attempt to solve:
Simplifying
a2 = 0
Solving
a2 = 0
Move all terms containing a to the left, all other terms to the right.
Simplifying
a2 = 0
Take the square root of each side:
a = {0}
Subproblem 2
Set the factor '(-4 + 3a)' equal to zero and attempt to solve:
Simplifying
-4 + 3a = 0
Solving
-4 + 3a = 0
Move all terms containing a to the left, all other terms to the right.
Add '4' to each side of the equation.
-4 + 4 + 3a = 0 + 4
Combine like terms: -4 + 4 = 0
0 + 3a = 0 + 4
3a = 0 + 4
Combine like terms: 0 + 4 = 4
3a = 4
Divide each side by '3'.
a = 1.333333333
Simplifying
a = 1.333333333
Solution
a = {0, 1.333333333}
Step-by-step explanation:
plz help me/math giving brainlest
Answer:
1. 6
2. 40
3. 5
4. 50
5. 50
6. 5
Act. 2
1. 234
2. 123
3. 122
4. 343.
5. 111
Act. 3
Marcus gave each $120.
Brandon gets paid $9 each hour.
There are 20 boxes on each shelf.
The second page I'm not sure what that means.
From 99° to 70°f what is the percent decrease
Answer:
should be -29.29 %
Step-by-step explanation:
Answer:
29.(29)%
Step-by-step explanation:
30 POINTS
The equation h= -161 + 56t models the height h, in feet, of a golf ball t seconds after it was hit. Find the values of t for which h = 0. Explain the meaning of the solutions.
Answer:
After 4 seconds the the ball will hit the ground
that is the correct answer
Which rules define the function graphed below?
Please help. I’ll give extra points and brainliest for a real answer
Answer:
y=x+2; y=5
Step-by-step explanation:
Answer:
y=x+2; y=5
Step-by-step explanation:
got it right on the quiz