Answer:
B. 1
Step-by-step explanation:
I calculated logically
help please!
using quadratic formula
round ti nearest hundred
Answer:
x = 0.19 or x = -0.76
Step-by-step explanation:
Equation: 7²-4x = 2
reordering the equation,
7x²-4x-2 = 0
Applying,
x = [-b±√(b²-4ac)]/2a..................... Equation 1
From the question,
Given: a = 7, b = -4, c = -2
Substitute these values into equation 1
x = [-4±√(-4²-(2×7×-2)]/(2×7)
x = [-4±√(16+28)]/14
x = (-4±√44)/14
Either
x = (-4+√44)/14
x = (-4+6.63)/14
x = 2.63/14
x = 0.19
or
x = (-4-√44)/14
x = (-4-6.63)/14
x = -10.63/14
x = -0.76
20 POINT!!
Can someone please help me I don’t understand it
Answer:
C
Step-by-step explanation:
x<-2 is an open circle the point to the left. Pointing to the left is less than and an open circle represents the fact that -2 itself does not count.
x≥2 is a closed circle where the arrow points to the right. The closed circle represents the fact that 2 does count. It goes right so it is greater than.
Find the distance between the points (-4,-1) and (0,-2).
Round to 2 decimal places.
Distance=
Answer:
-4,-1
Step-by-step explanation:
So how I did it is, I made a mintale picture of it in my head. Then, I "counted" how much space I had to go for the next point. And that's how I got the answer of -4,-1.
In PQR, the measure of R=90degrees, QP=53, RQ=45 and PR=28. What ratio represents the sine of P?
Step-by-step explanation:
sin(p) = opposite / hypontenuse = 45 / 53
You might need:
Calculator
A store has a 40% off sale on headphones. With this discount, the price of one pair of headphones is $36.
What is the original price of the pair of headphones?
$
Show Calculator
Stuck? Watch a video or use a hint.
Report a problem
Answer:
90
Step-by-step explanation:
1
A train trip took 4 hours. For the trip, the train traveled at 60 kilometers per hour. For the
2
rest of the trip, the train traveled at 100 kilometers per hour. How far did the train travel
in all?
Answer:
320 kilometers
Step-by-step explanation:
1/2 -- (60 * 2) = 120 km
rest pf the trip -- 100 km per hour -- 2 hours left -- (100 * 2) = 200 km
Therefore, 120 + 200 = 320 km
Thenks and mark me brainliest :)
1
Write an equation for the linear
relationship shown below.
4
1
6
7
8
13
10
19
Answer:
[tex]\bold{y=3x-11}[/tex]
Step-by-step explanation:
Begin with the equation [tex]y=mx+b[/tex]. Let's first find [tex]m[/tex].
For each time [tex]x[/tex] increases by 2 (the rows skip by 2), [tex]y[/tex] increases by 6. Since the relationship is linear, if [tex]x[/tex] were to increase by just 1 (half of 2), [tex]y[/tex] would increase by 3 (since we halve each component). Therefore, [tex]m=3[/tex].
To find [tex]b[/tex] (the y-intercept), we plug in the first value of [tex]x[/tex] we are given and notice the result. In this case, [tex]4 *3=12[/tex]. However, the first value of [tex]y[/tex] is 1, so we must subtract 11 so that the first term is 1. Hence, [tex]y=3x+11[/tex].
Please help faster please
Need help asap thanks
Answer:
A
Step-by-step explanation:
for a right angled triangle, the sum of the square of the two sides should be equal to the square of the hypotenuse. If this rule does not hold, the dimensions do not represent the side of a right angled triangle.
The Pythagoras theorem : a² + b² = c²
where a = length
b = base
c = hypotenuse
4² + 10² ≠ 16²
6² + 12² = 13²
7² + 24² = 25²
8² + 15² = 17²
Tanya walks dogs. She earns $10.50 for each dog she walks. She wants to go to a
concert that costs $157.50. Write an equation relating the number of dogs she needs
to walk to the amount of money she earns. Find how many dogs Tanya needs to walk
to go to the concert. Let n be the number of dogs Tanya walks.
HELPPPPPP!!!!
Answer:
Tanya must walk 15 dogs
Step-by-step explanation:
10.50x=157.50
x=157.50/10.50
x=15
A bag contains 7 red marbles, 8 blue marbles and 4 green marbles. If three marbles
are drawn out of the bag, what is the probability, to the nearest 100oth, that all three
marbles drawn will be blue?
Answer:
Step-by-step explanation:
A bag contains 8 red marbles, 3 blue marbles and 7 green marbles.
Total = 18 marbles.
Probability of drawing three red marbles = probability of drawing one red without replacement + probab of drawing another without reeplacement + probab of drawing a third without replacement.
Probability of drawing three red marbles = 8/18 + 7/17 + 6/16 = 0.4444 + 0.4118 + 0.3750 = 1.2312.
Can anyone figure this out? I’ll give Brainly :)) thank you!
Answer:
hey:)
12:15-8:15=4hr
17:30-13:00=4:30hr
4+4:30=8:30hr
$11/hr therefore:
8:30×11= 8.5×11=93.5
and now round it to the nearest hundredth:) I hope this was helpful
Given g(x) = -x + 5, solve for x when g(x) = 0
Answer:
x = 5
Step-by-step explanation:
Given g(x) = - x + 5 and g(x) = 0 , then equate the right sides
- x + 5 = 0 ( subtract 5 from both sides )
- x = - 5 ( multiply both sides by - 1 )
x = 5
PLSSSSS ASAP HELP!!!!
A window had a length of 10 feet and a width of 6 feet. What is the perimeter of the window?
A)Nono of these answers
B) 60 feet
C) 32 feet
D) 16 feet
E)136 feet
Evaluate the expression (2x + 5)2 -3x at the value x = -1
Answer:
2
Step-by-step explanation:
A 4 pint carton of chocolate milk is $2.12.What is the price per quart?
Answer: 0.35
Step-by-step explanation:
A 4-foot-long sandwich is cut into servings that are each foot long. How many servings will there be after the sandwich is cut? 1) 12 1) 3 1 12 15)
Answer: 12
Step-by-step explanation:
Answer:
total size of sandwich= L = 4ft
one serving = 1/3 of sandwich
So,
total no. of servings= 4/0.333 =12
Step-by-step explanation:
Plsss help. giving extra points if correct.
Answer:
98?
Step-by-step explanation:
Suppose there is a strong positive correlation between m and n. Which of the
following must be true?
O A. An increase in m causes n to increase.
B. When m increases, n tends to decrease.
C. When m increases, n tends to increase.
D. An increase in m causes n to decrease.
PLEASE ANSWER THIS ASAP IM ALWAYS SO GRATEFULL!!
Answer:
P(6) is 1/12, P(Shaded) is 8/12, P(Odd or Unshaded) is 10/12, and P(Even and Shaded) is 11/12
Step-by-step explanation:
Angles of Triangles Scavenger Hunt Answer Key
I would like to thank the people that help out in the math area, I’ve fully passed my math classes that I needed to graduate because of the community on here, specifically the math section....and I’ll be giving out my points :)
Answer:
Awe
Step-by-step explanation:
Good luck and great hopes for your future ^^
Answer:
May you successed with top highest marks may you gain achivements!!!! Through out your life may, you be blessed and your parents must be proud of you .............Alot of thanks to brainly and good luck for your future......
A coffeemaker can brew at a rate of 1 cup every 0 8 minute. At this rate, how long would it take to brew 6 cups?
Answer:
48 minutes
Step-by-step explanation:
Multiply
THIS IS WORTH 40 POINTS
Answer:
[tex]x=60^o[/tex]
[tex]y=50^o[/tex]
Step-by-step explanation:
ΔACD
[tex]50+70+x=180[/tex]
[tex]120+x=180[/tex]
[tex]x=180-120[/tex]
[tex]x=60[/tex]
ΔABC
[tex]60+50+ACB=180[/tex]
110+ ∠ACB=180
∠ACB=180-110
= 70°
Now...
x+y+∠ACB=180°
[tex]60+y+70=180[/tex]
[tex]y+130=180[/tex]
[tex]y=180-130[/tex]
[tex]=50^o[/tex]
---------------------------
hope it helps...
have a great day!!
Answer:
x = 60, y = 110
Step-by-step explanation:
the interior angles of a triangle will always add up to 180.
take the angles we already have and add them, once you get your answer you have to subtract that by 180 to find the missing angle.
70 + 50 = 120
180 - 120 = 60
———————-
the line at the bottom is called a straight angle, and it’s measure is 180
the exterior angle is equal to the sum of the two opposite interior angles (50 and 60)
y = a + b
y = 50 + 60
110 = 50 + 60
hope this helped!
Help help help !!!!!!!!!!!!!!!
Answer:
1
Step-by-step explanation:
So,6 to the power of 0 is 0.So the leftover is just one.
Help me pls greatly appreciated
Answer: 43/75 chance
Step-by-step explanation:
total number of coins:
15 + 28 + 12 + 20 = 75
total number of coins that arent quarters or dimes:
15 + 28 = 43
so the probability would be 43/75, which is not simplifiable
10x-3y+2y
Write the expression with fewer terms.
Answer:
10x-1y
hope this helps
have a good day :)
Step-by-step explanation:
help with this question!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
==========================================================
It might help to draw a triangle to represent what's going on. See the diagram below.
Let's call the triangle ABC. We'll place point A at the 90 degree angle, so it's at the base of the tower. Place point B where the knight is located. Point C is the location of the window in the tower.
The knight is 15 feet away from the base, meaning AB = 15. With respect to the reference angle (B = 60), side AB = 15 is the adjacent side. The length of the ladder BC is the unknown hypotenuse. We'll call this x for now.
We'll use the cosine rule to connect the adjacent and hypotenuse.
cos(angle) = adjacent/hypotenuse
cos(B) = AB/BC
cos(60) = 15/x
x*cos(60) = 15
x = 15/cos(60)
x = 30
Your calculator needs to be in degree mode.
Because x = 30, we conclude that the ladder needs to be BC = 30 feet long.
Side note: For any special 30-60-90 right triangle, the hypotenuse is always twice as long compared to the shorter leg.
Can someone Please help me
Answer:
Simple use tangent, which is equal to opposite divided by adjacent, so tan34=x/16, so multiply both sides by 16 to get x=10.79213627
Step-by-step explanation:
y=-9x^2+571x-3884 find x
Answer:
I'm pretty sure it's either 3.1 or 4.1
Step-by-step explanation:
Answer:
x = (571 ± √186217) / 18
x ≈ 7.74840677368558702303.. or 55.69603767075885742140..
x ≈ 7.75 or 55.70
Step-by-step explanation:
y = -9x² + 571x – 3884.
x = (-b ± √b² – 4ac) / 2a
x =
(-(571) ± √((571)² – 4((-9) × (-3884))) / 2(-9)) →
(-571 ± √(326041 – 4(34956))) / -18) →
(-571 ± √(326041 – 139824)) / -18) →
(-571 ± √(186217)) / -18 →
(571 ± √186217) / 18 →
