Answers
Related Questions
What is the solution to the system of linear equations below? 2/5x−y=6 −2x+5y=−30 Select one: A. (-13, 14) B. (-5, -8) C. no solution D. infinitely many solutions
Answers
Answer:
D. Infinitely many solutions
Step-by-step explanation:
[tex]-\frac{2}{5}x-y=6 | -2x+5y=-30[/tex]
1.Since neither equation contains an isolated. However, we can isolate -y in the first equation by adding [tex]\frac{2}{5}x[/tex] to both sides.
Like this: [tex]\frac{2}{5}x-\frac{2}{5}x-y=6-\frac{2}{5}x[/tex]
ending up with [tex]y=6-\frac{2}{5}x[/tex]
2.Now, we can change y to a positive y. By doing so, we divide -y by the entire equation.
Like this [tex]\frac{-y=6-\frac{2}{5}x }{-y}[/tex]
Ending with [tex]y=-6+\frac{2}{5}x[/tex]
3.Now, we can plug the expression [tex]-6+\frac{2}{5}x[/tex] into the second equation as a substitute for y, and solve for x. Then, we can use x to calculate y.
Like this [tex]-2x+5(-6+\frac{2}{5}x)=-30\\ -2x-30+2x=-30\\[/tex]
4. Since -2x+2x would cancel out and leave -30=-30. This is true because we know -30 equals -30 with no variable in sight.
can someone plzz solve these
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1. (117° - 94° = 23°) so x = 23°
2. These are vertical angles, which means that they will equal each other. So x = 148°.
3. (174° - 68° = 106°) so, x = 106°
4. (50° - 32° = 18°) so, x = 18°
5. Okay so since this is a straight line, it the bottom half does not matter. The straight line equals 180°. So here is you equation.
(125° + x° + 30° = 180°. So let us add 125 & 30, which would get us 155°. Now let us subtract 155° from 180°, and that would get us, 25°. So x = 25°.
6. Once again these are vertical angles, meaning the will equal each other. So x = 113°.
7. So since x and 30° are on a straight line, x, 30° and the middle angle should equal 180°: Since the middle angle is vertical to 105°, the middle angle equals 105°. So now your equation is. 30° + 105° + x° = 180°. Now let us add 30° and 105° which would give us 135°. Now let us subtract 135° from 180° and that would give us, 45°, so therefore, x = 45°.
8. All you have to do is add all three angles. So your equation is:
(30° + 15° + 89°)
This will give you 134°. Therefore, x = 134°.
9. Once again these are vertical angles so x = 162°.
10. Okay so here your equation will be x = 90° + 29°. Imma tell you why.
Now the angle with the box in it, is obviously 90°. x is vertical from the whole angle on 90° and 29°, which means what? THEY SHOULD EQUAL EACH OTHER. So 90° + 29° = 119°. So
x = 119°.
I hope that I helped
hey plz, help me I beg you plz answer the 3 images PLZ I WILL GIVE BRAINLIEST AND 10 PLUS PLZ I BEG YOU!!
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Answer:
150 and 500 and the last one is around 200
Step-by-step explanation:
Solve for x: x/5 = 75
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Answer:
x=15
Step-by-step explanation:
75/5=x 15x5=75
Answer:
15
Step-by-step explanation:
x/5 = 75/5
x = 15
To convert Celsius temperatures to Fahrenheit, you can use the expression (C + 32). Tom says that another way to write this expression is C + 32.
What error did Tom make?
A. Tom did not make an error.
B. Tom should have simplified the fraction .
C. Tom did not distribute to both terms in parentheses.
D. Tom should have added inside the parentheses before multiplying.
Answers
Answer:
a
Step-by-step explanation:
Pls help need a help ASAP
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Answer:
first one is vertical, will you take another picture I cant see the whole line
PLEASE PLEASE PLEASE HELP HELP FAST IM SO FRUSTRATED IM ABOUT TO CRY PLEASE HELP HERE R THE DIRECTIONS! READ THIS FIRST!!!!! Please make sure all answers are turned into MIXED NUMBERS if your answer is an improper fraction.....We ARE NOT doing #11 and #12..
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Answer:
5/6 17/18 2 bsjdjenabdje
Answer: 1. 3 19/20
2. 5/6
3. 0
4. 1/2
5. 4 1/10
6. 17/18
7. 3 19/20
8. 7/8
9. 2
10. 10 3/4
Evaluate the expression.
4 5 – 1 5 ÷ 2 3
(Write your answer as a fraction or as a whole or mixed number.)
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Answer:
44 and 2/5
or
222/5
Step-by-step explanation:
PEMDAS
or Please Excuse My Dear Aunt Sally.
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
Using this order, we can now solve this.
45 - 15 / 25
15 / 25 = 3/5
45 - 3/5 = 44, 2/5.
Hope this helped! Have a good day/night and good luck!
5/6 + 2/3 + 1/4 = ???
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Janine wants to start a new hobby of collecting baseball cards. Her parents bought her a binder in which to hold her baseball cards. Every day, she adds four cards to her binder.
The equation she writes to describe the total number of cards she will have in her binder each day is shown below.
T = 4d
T= total amount of cards in the binder
d = the number of days Janine’s been collecting cards.
Which of the following tables is equivalent to Janine's equation?
Answers
Answer:
The answer is d
Step-by-step explanation:
1*4=4
3*4=12
5*4=20
Four classmates collect data by conducting a poll. They ask students chosen at random how many days a week they buy lunch. • Emma interviews 10 students. • Dylan interviews 35 students. Megan interviews 75 students. • Matt interviews 20 students. Whose results are probably the most trustworthy? A. Dylan's B. Matt's C. Emma's D. Megan's
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Answer:
meghan
Step-by-step explanation:
she has the most people interviewed
1.Where is the least change in the amount of money earned?
Answers
Answer:
30 or 3 & 4 weeks
Step-by-step explanation:
Help plz
Is this a statistical questions?
What are the heights of all the players on the Atlanta Hawks basketball team?
Answers
Answer: Yes it is
Step-by-step explanation:
Step by step:
What is the solution to the inequality -7x+37<-5 ?
Answers
Answer:
you should try math papa its freee
Step-by-step explanation:
Lisa is filling a large coffee filter that is shaped like a cone. The dimensions of the cone are shown below. What formula is used to find the volume of the cone?(HELP ASAP)
A: 1/3 (4 1/5) (π) (4.9)
B: 1/3 (2 1/10 ) (π) (4.9)
C: 1/3 (2 1/10)^2(π) (4.9)
D: 1/3 (4 1/5)^2 (π) (4.9)
Answers
Answer:
option c
Step-by-step explanation:
formula for volume of cone is π r^2 (h/3)
Which sentence is correct?
A) -4 > 3
B) -4 < -6
C) -4 > -7
D) -5 > -4
Answers
Answer:
the same answer as them
i got 100:)
Step-by-step explanation:
Which expression has the least value when x = 1000?
Answers
Answer: Could we see the choices?
Step-by-step explanation:
Which description describes the solutions to this inequality?
Answers
Explanation: 4^3 is 64 so you know it must be the top or bottom one. This leaves us with k<64, meaning k is the numbers less than 64. This is what I think the answer is. I am sorry if it is wrong.
Tyler spent a relaxing afternoon watching movies. He watched movies for
2
1
2
hours. His brother watched the movies for
3
4
of the amount of time that Tyler did. What equation can be used to find out how much time Tyler’s brother spent watching movies?
Answers
Answer:
try 3 . 4 if it rong I'm sooo sorry
someone plz help me i will give brainliest just
Answers
Answer:
5) y = 3x + 1
6) For this question, I would just draw a line that is increasing, and then once it reaches 10 mins I would make a steep line going downward. Something like this: /\
7) Yes, Raoul is correct because Function A's initial value is 0 and function B's initial value is 3.
Answer:
need points
u did that to me and I will do it to u too
Can someone help me, please??
Answers
Answer:
1. 4.5x - 151.89
2. -2x + 375
Step-by-step explanation:
1.
Start with -$126.89
Small deposit: x (add)
Large deposit: 3.5x (add)
Withdrawal: $25 (subtract)
-126.89 + x + 3.5x - 25 =
= -151.89 + 4.5x
= 4.5x - 151.89
Answer: 4.5x - 151.89
2.
Start with $350
Small withdrawal: x (subtract)
Large withdrawal: x + 50 (subtract)
Deposit: $75 (add)
350 - x - (x + 50) + 75 =
= 350 - x - x - 50 + 75
= -2x + 375
Answer: -2x + 375
PLEASEEE HELPPP ILL GIVE BRAINLY ANSWEAR ALL OF THEM!!!!!
Answers
help me please will give brainliest to correct answer
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Answer:
A
Step-by-step explanation:
Pretty sure it is A
Answer:
First One
Step-by-step explanation:
It makes more sense and has a cat-whisker
y-12=4y solve for y and show work plz
Answers
3y= -12
Then, divide each side by 3 to isolate the y. You should end up with y= -4
Write and solve the equation that represents the sentence below.
The product of 18 and a number is 109.8.
Which statements are correct? Check all that apply.
It can be solved by using the division property of equality.
It can be solved by using the multiplication property of equality.
The equation should be StartFraction x Over 18 EndFraction = 109.8.
The equation should be 18 x = 109.8.
The answer is 6.1.
The answer is 1,976.4.
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Answer:
The equation should be 18x = 109.8
The answer is 6.1
Step-by-step explanation:
The word "product" tells you that 8 and x are being multiplied to give 109.8.
If you use that equation to solve for x by dividing 109.8 by 18, you will get 6.1.
The head of a nail is circular, as shown. The head of this nail has a diameter of 6 millimeters.
Which measurement is closest to the area of the head of this nail in square millimeters?
A. 9.42
B. 113.04
C. 28.26
D. 37.68
Answers
Answer:
its A
Step-by-step explanation:
Hope it helps
Write the equation of the line in slope-intercept form using y=mx+b
Answers
Answer:
y= -100 x= 100
Step-by-step explanation: The form y=mx+b means slope m and y-intercept b; similarly, the form y=mx+a means slope m and y-intercept a. The form y=m(x-a) is essentially different from the other two forms, and means slope m and x-intercept (instead of y-intercept) a.
Answer:
-4 -10 and 10 4
Step-by-step explanation:
will mark brainliest
plz helppp meee i have 9 points now so plz make this worth it to answer this questionnn
Answers
Answer:
C
Step-by-step explanation:
Rectangle: 8*5=40
Triangle 1: (3*5)/2=7.5
Triangle 2: (3*5)/2=7.5
Trapezoid : 40+7.5+7.5=55
Answer:
C
Step-by-step explanation:
for the rectangle, its 8*5=40
for the triangles, they are both 3*5=15
and for the trapezoid, it is 55
2) Based on the data represented in the double line graph. Which statement is true? A) At 15 almost 9 times as many students worked. B) At 17 almost 4 times as many students worked. Eliminate C) At 17 almost 4 times as many students did not worked. D) At 16 the same number of students worked and did not work.
Answers
Answer:
b
Step-by-step explanation:
Pls help I'm confused on this!!!!
(Composite Figures)
Greg is replacing a countertop in his kitchen with a new granite countertop. The dimensions of the countertop are shown below. If the granite he chose costs $175 per square foot, how much will it cost?