Answer:
-7-11=-18
Step-by-step explanation:
3x2- 4x + 2 = 0
Discriminant to determine
Answer:
The answer is 2+/- 2 over(/) 3
Step-by-step explanation:
You use the discriminant formula :)
9. Jamie ha ahorrado $ 42 del dinero de su asignación para comprar libros. Si compra 5 libros a d dólares por libro, le quedarán 42 5d de su asignación. ¿Cuánto le queda si los libros cuestan $ 3.50 cada uno?
Answer:
$24.50
Step-by-step explanation:
Jamie has saved $ 42 of his allowance money to buy books. If you buy 5 books at d dollars per book, you will have 42- 5d left of your allowance. How much is left if the books cost $ 3.50 each?
We have the equation
42 - 5d = Amount of Allowance left
d = 3.50
Hence:.42 - 5 × 3.50
= $42 - 17.5
= 24.5
PLEASE HELP
James had a collection of 500 Matchbox cars at the beginning of the summer.
After the summer, James had traded some of his Matchbox cars and now he has only 485 Matchbox cars.
What is the percent decrease of his Matchbox car collection?
Hector spent $40.75 for 2 DVDs that cost the same amount. The sales tax on his purchase was $4.15. Hector also used a coupon for $1.00 off his purchase. How much did each DVD cost?
Answer:
36.75 + 1 = 37.75 - 2.15 = 35.60/2 = 17.80
12x + 15y = 9
−12x − 18y = −6
PLEASE I NEED EXPLANATION THANKS
Answer:
x = 2
y = –1
Step-by-step explanation:
We need to solve this system of equations for the point where the two linear equations intersect. That means solving for one variable, then using that to solve for the other. But, I'm looking at this, and...
Well, I see an easy way to isolate y right now! See how one equation has 12x and the other has –12x? Adding the two equations together will cancel them out!
That gives us this equation:
12x – 12x + 15y – 18y = 9 – 6 — adding the expressions together
15y – 18y = 9 – 6 — cancel out the 12x
–3y = 3 — simplify the equation
–3y ÷ 3 = 3 ÷ 3 — divide by 3 to isolate y
y = –1 — simplify the equation
Now that we have our y-value, we can substitute into the equation and solve for x. I'm substituting into both to make sure y = –1 is part of the solution point (on a coordinate plane, this is where the functions intersect).
12x + 15y = 9 — original equation
12x + 15(–1) = 9 — substitute –1 for y
12x – 15 = 9 — simplify
12x – 15 + 15 = 9 + 15 — add 15 on both sides to isolate 12x
12x = 24 — simplify
12x ÷ 12 = 24 ÷ 12 — divide by 12 on both sides to isolate x
x = 2 — simplify
That's one equation. Let's check the other with these values to make sure (2, –1) is the solution point.
–12x – 18y = –6
–12(2) – 18(–1) ≟ –6
18 – 24 ≟ –6
–6 = –6 ✓
Yep, this is the solution we're looking for!
Hope this helps you understand the concept! Have a great day!
Zackary says that point c has the same location as point a because both points have the same coordinates.is Zachary right?explain why or why not
Answer:No
Step-by-step explanation:
No because A was (3,4) and point C was (4,3).
I hope this helps !!
If Tina traveled 2,000 miles in 5 hours on her plane flight to her vacation destination, how fast was the plane traveling?
Answer:
400 miles per hour
Step-by-step explanation:
2.000 miles : 5 hours =400 miles per hour
have a nice day :)
-2 (e+6)=-6 PLEASE HELP !!!!
Answer:
e=-3
Step-by-step explanation:
-2(e+6)=-6
/-2 /-2
e+6=3
-6 -6
e=-3
hope this helps have a blessed day :)
PLZ HELP!!!
multiply the polynomials.
(x+3)(x^2-6x+5)
A. x^3-3x^2-13x+15
B. x^3-6x^2+5x+15
C. x^3-6x^2-13x+15
D. x^3-3x^2+5x+15
the answer is A
:D :D :D :D :D :D :D
whats the slope of the line and whats in on the graph?
Answer:
-1 is the slope
Step-by-step explanation:
The rise is up 1 and the run is sideways 1.
Hope it helps!
The sum of two numbers is 35 and the difference is 1. What are the numbers
Answer:
17 and 18
Step-by-step explanation:
Taylor got an Ulta gift card that had $20 on it. If she bought 3 lipsticks at $2.99 each
and a make-up bag for $4.59, how much money is left on her Ulta gift card?
$6.44 is left
Hope this helps! :D
Answer:
$6.44
Step-by-step explanation:
3x2.99=8.97
8.97+4.59=13.56
20.00-13.56=6.44
1. What are the coordinates of the solution to this linear system
A. (2.1)
B. (-2,1)
C. (-1,2)
D. (2,-1)
What is the value of
[tex]2 {x}^{ - 2} {y}^{ - 2} [/tex]
for x = 3 and y = -2?
A.
[tex] \frac{1}{18} [/tex]
B. 72
C.
[tex]2 {( - 6)}^{ - 4} [/tex]
D. 1/648
Please Help me!
If the sales-tax rate is 8%, how much will the total cost of a purchase of $200 be?
Answer:216
Step-by-step explanation:
because 200 times 8 percent = 16 so then you add 16 too 200 and get 216.
i’m very confused on this can someone help?
Answer:
(x,y) -> (5,4)
Step-by-step explanation:
there is a positive slope.
how can you tell that the slope of the line through (2,2) and (-3,5) is negative without calculating
There are twice as many boys as girls in Ms. Lyn's chorale group. When 3 girls join the chorale, the new group has 24 members. How many boys and girls were there in the original group?
Answer:6tuytuyttyty
Step-by-step explanation:
John needs a computer for his summer class. The computer costs 385 but since he is still in school, he gets a 30% discount. What is the total amount he will spend on his computer?
Answer:
269.50, you could search it up
The total amount that he will spend on his computer will be $269.5.
What is the percentage?The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates to one hundred percent. It is symbolized by the character '%'.
The percentage is given as,
Percentage (P) = [Final value - Initial value] / Initial value x 100
For his summer course, John has to have a computer. Since he is still enrolled in school, he receives a 30% discount off the computer's $385 price.
The amount of discount is calculated as,
⇒ 0.30 x 385
⇒ 115.5
Then the amount spent on the computer is calculated as,
⇒ 385 - 115.5
⇒ 269.5
The total amount that he will spend on his computer will be $269.5.
More about the percentage link is given below.
https://brainly.com/question/8011401
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Which best describes a standard thermometer...
EXPLAIN
Rational
Real Number
Whole Number
Integer
Answer:
inteager
Step-by-step explanation:
temperature can express both positive and negative
help with this question
Answer: yes y=12 is a solution to y over -6
Step-by-step explanation: you simply have to put 12 in for y. 12 divided by -6 = -2.
[tex] \frac{12}{ - 6} = - 2 [/tex]
[tex] - \frac{2}{1} = - 2[/tex]
Therefore, y = 12 is the correct solution.
We get -2/1 from 12/-6 by diving the top and bottom by 6.
Parallelograms (5x+4). 59
Answer:
59 = (5x + 4)
x = 11
Step-by-step explanation:
59 = (5x + 4)
5x + 4 = 59
5x = 59 - 4
5x = 55
x = 55/5
x = 11
help me -30=5(x+1)−30=5(x+1) x=
Answer:
X=-7
Step-by-step explanation:
Divide then subtract to get x by itself
-30=5(x+1)
Divide each side by 5= -30/5=5(x+1)/5
-30=x+1
-6=x+1
-6-1=x+1-1 Subtract one to get x by itself
-6-1=x+1-1 (cross out both x's.
-6-1=x
Hope this helped
I NEED HELPPPPPPPPP AHHHHHHHHHHHHHHHHHHHH
please TwT
Answer:
-3,3
Step-by-step explanation:
there are two space of distance from A to the reflected line
two spaces above the reflected line is -3,3
pid 2. The perimeter of triangle GHI is 40 cm. If both triangles are similar, then what is the length of JT. 15 cm 15 cm Wool 10 cm G
Write your answer below:
In a school, lessons are 55 minutes long. a) A maths lesson starts at 9:20am. What time does it end? b) A science lesson ends at 2:15pm. What time does it start?
Answer:
A. It ends at 10:15am
B. It starts at 1:20pm
Explanation:
A. Add an hour then subtract 5 minutes
B. Subtract an hour then add 5 minutes
Answer:
a- 10:15 b- 1:20
Step-by-step explanation:
a- there are 40 min remaining in the hour. Subtract that from 55, you get 15. That means the time is 10:15.
b- There are 15 min in the hour, subtract that from 55. You get 40, the time is 1:20
[tex]3=\frac{x}{3.3}[/tex]
what is x?
the correct answer is 9.9
Step-by-step explanation:
3 × 3.3 = 9.9
x = 9.9 ÷ 1 = 9.9
x = 9.9
Answer:
[tex]3 = \frac{w}{3.3} \\ [/tex]
Multiplying both sides of the equation by 3.3, we get
[tex]3 \times 3.3 = \frac{w}{3.3} \times 3.3 \\ 9.9 = w \\ \boxed{w = 9.9}✓[/tex]
★ w=9.9 is the right answer.NEED HELP ASAP! ill give brainliest
Answer: (0,3) 2. no
Step-by-step explanation:
In ΔPQR, r = 4.9 cm, ∠R=21° and ∠P=104°. Find the length of p, to the nearest 10th of a centimeter.
Answer:
Step-by-step explanation:
The answer is the length of p, to the nearest 10th of a centimeter is 13.3 cm .
What is the law of sines ?
he Law of Sines (or Sine Rule) is very useful for solving triangles.
According to the law ,
When we divide side a by the sine of angle A
it is equal to side b divided by the sine of angle B
and also equal to side c divided by the sine of angle C
[tex]\rm \dfrac{a}{sinA} = \dfrac{b}{sinB} = \dfrac{c}{sinC}[/tex]
It is given that in Δ PQR
r = 4.9 cm
angle R = 21
angle P =104
Length of p needs to be found
Therefore by using above equation
[tex]\rm \dfrac{r}{sinR} = \dfrac{p}{sinP}[/tex]
[tex]\rm \dfrac{4.9}{sin21^{0}} = \dfrac{p}{sin104^{0}}[/tex]
p= 13.3 cm
Therefore the length of p, to the nearest 10th of a centimeter is 13.3 cm .
To know more about law of sines
https://brainly.com/question/17289163
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Pls answer the four questions if they are true or false!!
Thanks!!
Answer:
..........
Step-by-step explanation:
False
False
True
True