Answer:
a)0
b)-27
Step-by-step explanation:
I simplified it u just combine the like terms
the rest should be easy
The motion of the ball from the time it was thrown upwards was modeled closely by the function,h(t)=-16t2+128t+144, where h(t) represents the height of the ball in feet after t seconds. After how many seconds did the ball reach the ground?
please I need help
Answer:
9 seconds
Step-by-step explanation:
When the ball reaches the ground, the height, h(t), is 0. Might as well make the numbers easier to work with - since for the x-intercepts (t-intercepts), h(t) = 0, you can divide the entire equation by the greatest common factor, in this case -16, to make things better:
[tex]0=-16t^2+128t+144\\0=t^2-8t-9[/tex]
Now you can solve this any way you like, such as by using:
[tex]\frac{-b \± \sqrt{b^2-4ac}}{2a}\\[/tex]
This is an easy polynomial though, and you may be able to factor it just by eyeballing it:
[tex]0=t^2-8t-9\\0=(t-9)(t+1)\\t=9,-1[/tex]
You can't have negative time, so we reject -1, leaving only 9 as the answer.
find a unknown length of the sides
Answer:
[tex]a = 3\sqrt{7}[/tex]
Step-by-step explanation:
Given
See attachment
Required
Determine (a)
To do this, we make use of Pythagoras theorem.
[tex]12^2 = a^2 + 9^2[/tex]
[tex]144 = a^2 + 81[/tex]
Collect like terms
[tex]a^2 = 144 -81[/tex]
[tex]a^2 = 63[/tex]
Take square roots
[tex]a = \sqrt{63}[/tex]
Expand
[tex]a = \sqrt{9*7}[/tex]
Split
[tex]a = \sqrt{9}*\sqrt{7}[/tex]
[tex]a = 3\sqrt{7}[/tex]
Which inequality explains why these three segments cannot be used to construct a triangle?
Answer:
Iliana cannot construct a triangle because the sum of the two smaller sides will not be greater than the third side. Iliana cannot construct a triangle because the sum of the two smaller sides will be greater than the third side.
Brainliest goes to whoever answers correctly and explains also if you want extra points answer my other questions
Answer:
Step-by-step explanation:
Question 1 = 2002
2002 - 2000 = 2 (the years since 2000)
y = (275 x 2) + 50
y = 875
Question 2 = 1425 likes
2005 - 2000 = 5 (the years since 2000)
y = (275 x 5) + 50
y = 1425
Question 3 = 2018
Since y = 5000
5000 - 50(the extra likes) = 4950
4950 / 275 = 18 (the years since 2000)
2000 + 18 = 2018 (the year)
if someone answers this i won’t drop out
Answer:
d
Step-by-step explanation:
cuanto es 14° 15´ 12´ ´ X 2 ayuda por favor
Answer:
28° 30´ 24´ ´
Step-by-step explanation:
14° 15´ 12´ ´ x 2 = 28° 30´ 24´ ´
Answer:
nosee
Step-by-step explanation:
nada
A scalene triangle has the lengths 6, 11, and 12. Keyla uses the law of cosines to find the measure of the largest angle. Complete her work and find the measure of angle Y to the nearest degree.
Answer:
The maximum angle is 84.3 degree.
Step-by-step explanation:
Sides of a triangle is
a = 6 , b = 11, c = 12
The maximum angle is opposite to c.
So,
[tex]a =6, b =11, c = 12 \\\\cos C =\frac{a^2+b^2-c^2}{2 ab}\\\\cos C =\frac{36+121-144}{2\times 6\times 11}\\\\cos C = \frac{13}{132}\\\\cos C = 0.0985\\\\C =84.3^o[/tex]
Answer:
The person above got it wrong its 84
Step-by-step explanation:
got it wrong on edge
Triangle ABC ~ Triangle DEF. Measure of angle A = 20
degrees and measure of angle F = 65 degrees. AB=10, DE = 15, EF= 12.
Find measure of angles B, E, D and C and the length of BC.
Answer:
B=95°
E=95°
D=20°
C=65°
BC=7cm
Step-by-step explanation:
the triangles look like they are identical, just different in size only. Since DE= 15 and AB=10 that may mean that they have a 5cm difference making side BC= 7cm since EF= 12 minus 5 equals 7cm. Now for the other angles, a triangle no matter what,if we put all their angles together equal 180°. We already know angle A= 20 so the same applies to angle D. We also know that angle F=65 degrees, that makes angle C the same. The only thing that's left are angles B and E that can be found by adding our other angles. So if A+C(20+65)=85 then 180-85=95 degrees is angle B and since the triangles are identical the same goes to E.
farmer joe used 2/13 bags of seeds on each acre of land. If there are 6 acre of land, how much seed did he use?
Answer:
12/13 bags
Step-by-step explanation:
2/13 * 6 = 12/13
Pls help me with this one if: 1 1/2+ 2 3/4+ 3 2/5=6+10/20+15/20+8/20=6 33/20=7 13/20 then what is 2 1/2+1 3/4+3 2/3=?? It's adding and subtracting mixed numbers by the way
Answer:
7 11/12
Step-by-step Explanation:
2 1/2 = 2 2/4
2 2/4 + 1 3/4 = 3 5/4 = 4 1/4
4 1/4 = 4 3/12
3 2/3 = 3 8/12
4 3/12 + 3 8/12 = 7 11/12
Miguel and Jacqui built towers out of craft sticks.Miguel's tower had a 4-inch base.Jaquis tower had a 6-inch base.Miguels tower had a volume of 128 cubic inches and jaquis had a volume of 288.Who's tower was taller
Answer:
Height is same for both the towers
Step-by-step explanation:
The computation is as follows;
For 1st tower
The height is
= 128 ÷ 4^2
= 8 inches
And,
For the 2nd tower
The height is
= 288 ÷ 6^2
= 8 inches
So as we can see that the height of the both the tower is same i.e. 8 inches so the same should be considered
Two 6-sided dice are rolled at the same time. What is the probability that a 4 is rolled on both dice? Give your answer as a fraction.
help me with this mathematics
Answer: B
Step-by-step explanation: 65/100 = 65%
Solve the following quadratic equation by using the Quadratic Formula: X²+ 2x - 3
easy simple math
39.99 x 7.25
Answer:
289.92
Step-by-step explanation:
Multiply the numbers together
[tex]\longrightarrow{\green{289.9275}}[/tex] ✅
Step-by-step explanation:
[tex]39.99 \times 7.25 \\ \\ = 289.9275[/tex]
[tex]\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{♡}}}}}[/tex]
What is the slope given the two points?
(-3,12) & (4,5)
Answer:
-1
Step-by-step explanation:
(-3 , 12) & (4, 5)
Slope = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\[/tex]
[tex]= \frac{5 - 12}{4-[-3]}\\\\= \frac{-7}{4+3}\\\\=\frac{-7}{7}\\\\= -1[/tex]
Find the volume of the sphere.
Either enter an exact answer in terms of π or use 22/7 for π.
Answer:
0.167π
Step-by-step explanation:
r = 0.5
[tex]Volume = \frac{4}{3} \pi r^{3} = \frac{4}{3} \pi 0.5^{3} = 0.167\pi[/tex]
Will give brainliest!! Pls help
Directions: Simplify each term by factoring.
1. 3rs
2. 12xy
3. 5x^2
4. 36x^2
5. 25x^2
6. 30x^2
7. 5x^3
8. 24y^3
9. 9xy
10. 12x^4
Factoring means to break and make it shorter.
Answers:
1. [tex]3rs=3*r*s[/tex]
2. [tex]12xy=2*2*3*x*y[/tex]
3. [tex]5x^{2} =5*x*x[/tex]
4. [tex]36x^{2} =2*2*3*3*x*x[/tex]
5. [tex]25x^{2} =5*5*x*x[/tex]
6. [tex]30x^{2} =5*7*x*x[/tex]
7. [tex]5x^{3} =5*x*x*x[/tex]
8. [tex]24y^{3}= 2*2*2*3*y*y*y[/tex]
9. [tex]9xy=3*3*x*y[/tex]
10. [tex]12x^{4} =2*2*3*x*x*x*x[/tex]
hope this helps
2 = n/3 what is n? what does n equal
Answer:
n = 6
Step-by-step explanation:
Given
2 = [tex]\frac{n}{3}[/tex] ( multiply both sides by 3 to clear the fraction )
6 = n
Answer:
n=6
Step-by-step explanation:
If you divided 6 and 3 you would get an answer of 2. So the equation is saying n/3 which is n divided by 3 would give an answer of 2.
A school club visits a science museum. Student tickets cost $10 each.
Non-student tickets cost $15 each. The club paid $300 for the tickets.
Which equation below could model this situation? *
A. Y=300(15+10)
B. 300=10x + 15y
C. 25x=300
D. Y=300+10x
please help find x!!
Answer:
X= 360- (180+35)
X= 145
Step-by-step explanation:
since angle at a point is same as angle in a circle =360°
And we've being given two values out of three that makes up the point. so we subtract the sum of the two values from the size of angle at a point
Heeeelp please I'm desperate
Answer:
A = 108 ft²
Step-by-step explanation:
the length of the smaller rectangle must be 9 (27÷3)
therefore, the ratio of length to width is 3/9 and if the polygons are similar then the length and width of the larger shape would be 6/18
18 x 6 = 108
What is the correct value for n in the equation 12.5% of n = 350?
Answer:
What is 12.5 percent of 350? = 43.75.
Answer:
The correct value for n is 2800.
Step-by-step explanation:
We need to find the value of n. According to the given information, 12.5% of n is 350. Here the percentagle 12.5% must be converted to the equivalent 0.125.
Then the equation to be solved is 0.125n = 350, so that
350
n = --------- = 2800
0.125
The correct value for n is 2800.
Alice is given pocket money every week. She saves one-half of it, spends one-quarter of it on magazines and one-third of the remainder on sweets. She is left with 80 Gp in her purse.
Answer: in the beginning she has 1920 Gp.
Step-by-step explanation:
A bag contains red, white and black counters. The pie chart shows information about the counters in the bag. What fraction of the counters are red ? Give your answer in its simplest form.
Answer:
(120/360) *100% = 33 red counters
Select the correct graph of the equation.
Answer:
A
Step-by-step explanation:
The -2 indicates that y would be -2; because A is the only option with that being true, we can eliminate all other potential options rather quickly.
I believe this is 3/5x-2 but please take pictures with all information in view so we can provide better answers!
Shape 1 and shape 2 are plotted on a coordinate plane. Which statement about the shapes Is true?
Answer:
They are congruent.
Step-by-step explanation:
You can tell because a string of rigid transformations could lay them directly on top of each other without any parts hanging off.
You can reflect shape 2, rotate it, then translate it up to lay them on top of each other.
Write and equation for a line that is parallel to the line 4y + 3x = 12
Answer:
y = -3/4 x + B
Step-by-step explanation:
B is the translation of the line across y-axis
Introduce the variables and set up the system of equations: Rafael and Lucas go to the mall. The two of them buy a total of 15 t-shirts. Rafael gets 3 less than twice as many t-shirts than Lucas. How many t-shirts did each of them get?
Answer:
lucas = 9
rafael = 6
Step-by-step explanation:
two equations can be derived from the question
r + l = 15 equation 1
r = l - 3 equation 2
r = rafael
l = lucas
substitute for r in equation 1
l - 3 + l = 15
combine similar terms
l + l = 15 + 3
2l = 18
l = 9
substitute for l in equation 1
r + 9 = 15
r = 15 - 9
r = 6
Put the following equation of a line into slope-intercept form, simplifying all
fractions.
10x + 2y = -18
Answer:
y = -5x-9
Step-by-step explanation:
Slope intercept form is
y = mx+b where m is the slope and b is the y intercept
10x + 2y = -18
Subtract 10x from each side
10x + 2y-10x =-10x -18
2y = -10x-18
Divide each side by 2
2y/2 = -10x/2 -18/2
y = -5x-9