Answer:
Step-by-step explanation:
I'll focus on -10v^2=-810 and will aim to find the solution, v. Dividing both sides by -10, we get v^2 = 81, so that v = ±9 (two roots).
The other equation, 7r^2 = -70, has no real solutions.
r^2 = -70 yields r = ±i√10 (two imaginary solutions)
What do the arrows heads indicate?
Answer:
These pictures that you draw with arrows and arrowheads are representations of abstract mathematical objects. A ray is a subset of a line that has a starting point and extends indefinitely in one direction (not the other). The arrowhead is meant to indicate that it goes on and on.May 9, 2015
Why do vectors have arrowheads at the "endpoint
according to
...https://math.stackexchange.com › questions › why-do-vec...
Use the Quadratic Formula
Use the Quadratic Formula to find the zeros of the given
expression. Be sure to show your steps!
2x2-7x+3
Plz help no links
Answer:
1/2 and 3
Step-by-step explanation:
The quadratic formula is as given:
( -b±√(b^2-4ac) )/2a
To use it, plug in the a,b and c values.
ax^2+bx+c
In this case a is equal to 2, b is equal to -7, and c is equal to 3
plugging it into our formula gives us:
(-(-7)±√(-7^2-4*2*3) )/2*2
Which is equal to:
7±√(49-24) / 4
= 7±√25 / 4
=7±5 / 4
=2/4, 12/4= 1/2, 3
3) Mary deposits £10000 in an account which pays 5.6% compound
interest per year.
How much will Mary have in her account after 5 years?
Answer:
FV= £13,131.66
Step-by-step explanation:
Giving the following information:
Initial Investment (PV)= £10,000
Interest rate (i)= 5.6%
Number of periods (n)= 5 years
To calculate the future value (FV), we need to use the following formula:
FV= PV*(1 + i)^n
FV= 10,000*(1.056^5)
FV= £13,131.66
I NEED HELP SOMEONE PLZZZ HELP ME PLZZZZ
Answer:
3
Step-by-step explanation:
Answer:
h = √18 (4.24)
Step-by-step explanation:
Theorem = a² + b² = c²
√34 - 4² = a²
√34 - 16 = a
√34 - 16 = 18
√18 = 4.2426406871192851464050661726291 (Rounded to nearest hundreth: 4.24; nearest tenth: 4.2; nearest one: 4)
A cooking school is teaching students how to make pasta noodles. The line plot displays how much flour each student used. How many total cups of flour did the students use to make the pasta?
Answer:
[tex]Total = 11\frac{1}{8}\ cups[/tex]
Step-by-step explanation:
Given
See attachment for plot
Required
Total number of cups used
The number of dot on each dataset represent the number of student
So, to get the total number of cups, we simply add the product of the number of cups and the number of student for each data item
So, we have:
[tex]Total = \frac{1}{8} * 6 + \frac{1}{4} * 5 + \frac{3}{8} * 2 + \frac{1}{2}*0 + \frac{5}{8} * 4 + \frac{3}{4} * 2 + \frac{7}{8} * 5[/tex]
[tex]Total = \frac{6}{8} + \frac{5}{4} + \frac{6}{8} + 0+ \frac{20}{8} + \frac{6}{4} + \frac{35}{8}[/tex]
Solve
[tex]Total = \frac{6+10+6+0+20+12+35}{8}[/tex]
[tex]Total = \frac{89}{8}[/tex]
[tex]Total = 11\frac{1}{8}\ cups[/tex]
Which is the answer?
A.5.7
B.8.9
C.3.5
D.3.2
help me please:(
Answer:
The answer is c
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
hope this helps with the work
Please please help me!
Answer:
0, 3
Step-by-step explanation:
im pretty positive this is the correct answer enjoy
r=5 ft
24 ft
Radius
Height
Area of Base
Lateral Area
Surface Area
Volume
Jack is planning to attend a public university after he graduates from high school in 2 years. He is devising a plan to save money each month to help with the expenses of attending the university. The cost of attending the public university for one-year is $27,540. His family has promised to contribute $13,950 each year he is in school. What is the minimum amount of money Jack must contribute to his savings per month for the next 2 years to have enough money to pay for his first year of tuition?
a
$537.95
b
$566.25
c
$598.32
d
$512.95
PLEASEEE HURRRRY ANSWER THESE QUESTIONSSS
Answer:
5. We can already tell from the looks of it that she is using a different number for pi throughout her answers. Therefore it is C
6. 2 x 3.14 x 4.9 = 30.772 rounded would be 31, C is your answer. *formula of circumference:* pi(3.14 or 22/7 whatever they tell you to use for pi) x 2(its just always there when finding circumference) x radius(half of diameter or already given radius)
7. Let's just find the value of X on the top.
51(given degree) + 90(right angle degree) + X = 180(straight line degree)
51 + 90 + x = 180
141 + x = 180
-141 -141
X = 39
39 is the same to x beneath so therefore the value of x is 39 degrees.
Jill sold one third of her dolls and bought 15 more she now has 25 dolls with how many did she start?
Answer:
15
Step-by-step explanation:
sold 1/3 so 2/3 remain
(2/3)x + 15 = 25
Subtract 15 from both sides
(2/3)x = 10
Multiply both sides by 3/2
x = 15
Find the geometric mean between 6 and 48 given the sequence (3,6,12,24,48,96)
Answer:
16.97
Step-by-step explanation:
the geometric mean value of a set of n numbers is the nth root of the product of all n numbers.
so, here this means
[tex]gm = \sqrt[6]{3 \times 6 \times 12 \times 24 \times 48 \times 96} [/tex]
this would be 16.97
but careful, the problem only asks for the gm between 6 and 48 of the sequence.
so, we actually only consider the subset 6, 12, 24, 48.
therefore
[tex]gm = \sqrt[4]{6 \times 12 \times 24 \times 48} [/tex]
this is also
[tex]gm = \sqrt[4]{3 \times 2 \times 3 \times 2 \times 2 \times 3 \times 2 \times 2 \times 2 \times 3 \times 2 \times 2 \times 2 \times 2} [/tex]
[tex] = \sqrt[4]{ {3}^{4} \times {2}^{10} } [/tex]
[tex] = \sqrt[4]{ {3}^{4} \times {2}^{4} \times {2}^{4} \times {2}^{2} } [/tex]
[tex] = 3 \times 2 \times 2 \times \sqrt[4]{ {2}^{2} } [/tex]
[tex] = 12 \times \sqrt{2} [/tex]
so, we could specify the result as that simple expression
or calculate it
gm = 16.97
hey, the result is the same as for the complete sequence.
coincidence ? no, it is not. but that is a subject for a different question.
Robert plays cricket. He hit the ball in such a way that it goes up 180 feet
in 45 seconds. What is the speed of ball in feet per second?
Answer:
4 feet per second
Step-by-step explanation:
Hi there!
[tex]v=D/t[/tex] where v is velocity (speed), D is distance and t is time
Plug in the known values (D=180 feet, t=45 seconds)
[tex]v=180/45\\v=4[/tex]
Therefore, the speed of the ball is 4 feet per second.
I hope this helps!
Answer:
Honestly, I will say 4? I apologize if it is wrong though
Step-by-step explanation:
Because I divided 180 by 45.
Colin's bank account balance is d dollars. If he deposits a check for 50$. Write an expression to represent his new balance.
Answer:
D+50$
Step-by-step explanation:
it just is
Can you make a triangle with the lengths 4cm, 6cm and 8cm? If so, is it acute, obtuse or right?
Answer:
acute
Step-by-step explanation:
using the Pythagorean theorem, the numbers are too small so therefore it's acute
Hope this helps u :D
If 72 x 96 = 6927, 58 x 87 = 7885, then 79 x 86 = ?
79 x 86 is equal to 6,794.
If this helps, please mark me Brainliest!
Have a great day!
Please a correct answer gets brain thing that I forgot it name please help
Answer:
;FIHI;IHFHGILSOUDHFUHZSIUDGNJKZNSFJGNOSHTJOIJOIGJOSKFNGKNSJKGNONOJGOKJN
Step-by-step explanation:
Solve the equation.
-3x + 1 + 10x = x + 4
O x=1/2
O x=12 /2
O x = 12
O x = 18
Answer:
a) x=1/2
Step-by-step explanation:
Plug In
-3 (1/2) + 1 + 10 (1/2) = 1/2 + 4
:)
A sample proportion of 0.78 is found. To determine the margin of error for this statistic, a simulation of 100 trials is run, each with a sample size of 50 and a point estimate of 0.78. The minimum sample proportion from the simulation is 0.62, and the maximum sample proportion from the simulation is 0.80. The margin of error of the population proportion is found using half the range. What is the interval estimate of the true population proportion?
1. (0.74, 0.82)
2. (0.64, 0.92)
3. (0.72, 0.84)
4. (0.69, 0.87)
Answer:
4. - (0.69,0.87)
What is the measure of angle X. No links plz
Answer:
30
Step-by-step explanation:
Pls help will mark brainliest
Answer:
uhh, look it up
Step-by-step explanation:
Need this ASAP please
Answer:
C
Step-by-step explanation:
Because if we multiply by 2 both member we have
(x-12)(x-4)= 0
A product has a result that is equal to iif at least one of its factor is equal to 0, so we can solve this two equations:
x-12 = 0
x = 12
x-4 = 0
x = 4
A storage bin is a rectangular prism that measuring 114 cm long by 56 cm high by
56 cm deep. What is the surface area of the exterior, in square feet?
Answer:
33.12 square feet
Step-by-step explanation:
Step 1
We convert the dimensions to feet
1 cm = 0.0328084 feet
Length = 114cm
Hence
114 cm = 114 × 0.0328084 feet
= 3.74016 feet
≈ 3.7 feet
Height = 56cm
Hence
56 cm = 56 × 0.0328084 feet
= 1.83727 feet
≈ 1.8 feet
Depth(width) = 56cm
Hence
56 cm = 56 × 0.0328084 feet
= 1.83727 feet
≈ 1.8 feet
Step 2
The surface area of the rectangular prism
A=2(wl+hl+hw)
=2× (1.8×3.7+ 1.8×3.7 + 1.8 ×1.8)
≈33.12 square feet
Which statement best describes the relationship between the two variables? There is an association because the relative frequencies by column are similar. There is an association because the relative frequencies by row are similar. There is no association because the relative frequencies by column are similar. There is no association because the relative frequencies by row are similar.
Answer:
I think it is B if it is your welcome if not sorry its been a while since I learned about these.
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Please help!!!!!! I’ll give brainliest:)
Answer:
480
Step-by-step explanation:
The dice landed on two odds 12 out of the 50 times. Which is 24% of the time (.24). You then do 2,000 times 24% and get your answer of 480.
trig questions above solve for x and round to the nearest tenth
Answer:
x= 51.3
x=35.1
Step-by-step explanation:
10.)
For this one we have the adjacent side and the hypotonouse
Which means we'll use CAH
cos(x)=25/40
x= 51.31781255
(assuming that we have to round to the nearest tenth again)
x=51.3
12.)
For this one we have the adjacent and hyptonouse
we'll use CAH again
cos(x)=27/33
x= 35.09680123
x=35.1
Which figures will have a volume that is greater than 100 cubic units? Select two options. a rectangular prism with dimensions of 4 by 5 by 4 a rectangular prism with dimensions of 2 by 12 by 6 a rectangular prism with dimensions of 1.5 by 8 by 8 a triangular prism that is 6 long and has a triangular face with a base of 4 and a height of 12 a cube with side length 4.
Answer:
It is B and D
Help me with this math problem
Answer:
I believe that the answer is B
Step-by-step explanation:
What is P(A ∩ B)?
A) 1/10
B) 1/2
C) 3/10
D) 4/5
Answer:
A)
[tex]P(A ∩ B) = \frac{2}{20} \\ = \frac{1}{10} [/tex]
50 pointsssss PLEASEEEE HELPPPPP!!!!!
Mr. Alvarez and Ms. Bento each recorded grades of their students in their first period classes. The table below shows the number of students who received each letter grade during each of the first three grading periods. Both teachers have 40 students in each class.
1. Construct Matrix A to represent Mr. Alvarez’s grades and Matrix B to represent Ms. Bento’s grades.
Answer:
table below shows the number of students who received each letter grade during each of the first three grading periods. Both teachers have 40 students in each class.
1. Construct Matrix A to represent Mr. Alvarez’s grades and Matrix B to represent Ms. Bento’s grades.
Step-by-step explanation:
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