A hot air ballon is descending at a rate of 100 feet per minute. After 6 minutes, the hot air ballon is 200 feet above the ground.
Answer:
800 feet i think but is this the full question
Step-by-step explanation:
h(t)=(49+4.9t)(10-t) solve for t
Answer:
t = ±10
Step-by-step explanation:
after using the FOIL method you have the following:
490 + 49t - 49t - 4.9t²
middle two terms zero out
h(t)= -4.9t² + 490
if you multiply by -10 you can get perfect squares
h(t) = 49t² - 4900 which has two factors: (7t + 70)(7t - 70)
now set each factor equal to zero and solve:
7t + 70 = 0
7t = -70
t = -10
7t - 70 = 0
7t = 70
t = 10
A soda company conducted a taste test for three different kinds of soda that it makes.
It surveyed 200 people in each age group about their favorite flavor and the results are shown in
the table below.
Age
Soda A Soda B Soda C
Under 20
30
44
126
20 to 39
67
75
58
40 to 59
88
78
34
60 and over
141
49
10
10.
What is the probability that a participant chose Soda C or was under 20 years old?
Rounded to the nearest tenth
35.2%
37.8%
52.5%
50%
Answer:
Step-by-step explanation:
35percent was yonger
1)carla tiene 628 galletitas para preparar una torta, cada piso tendra 24 galletitas¿cuantos pisos puede armar?,¿le sobran galletitas o le alcanza justo?
POR FAVOR ES PARA HOY
Answer:
puede hacer 26 pisos y le sobran 4 galletas
Researchers interviewed street prostitutes in Canada and the United States. The mean age of the 100 Canadian prostitutes upon entering prostitution was 19 with a standard deviation of seven. The mean age of the 130 United States prostitutes upon entering prostitution was 21 with a standard deviation of nine. Is the mean age of entering prostitution in Canada lower than the mean age in the United States
Answer:
Step-by-step explanation:
The null and the alternative hypothesis is:
[tex]H_o: \mu_c \ge \mu_{us}[/tex]
[tex]H_a : \mu_c < \mu_{us}[/tex]
The t- student test statistics can be computed as:
[tex]t = \dfrac{x_c- x_{us}}{\sqrt{\dfrac{\sigma_c^2}{n_c} + \dfrac{\sigma_{us}^2}{n_{us}} }}[/tex]
[tex]t = \dfrac{19- 21}{\sqrt{\dfrac{7^2}{100} + \dfrac{8^2}{130} }}[/tex]
t = -2.017
degree of freedom = (n₁ - 1) + (n₂ - 1)
= (100 - 1) + (130 - 1)
= 228
Using the data of t-value and degree of freedom;
The P-value = -0.224
Decision rule: Do not reject the null hypothesis if the p-value is greater than ∝(0.01)
Conclusion: We reject the null hypothesis since the p-value is less than ∝.
Therefore, there is enough evidence to conclude that the mean age of entering prostitution in Canada is lower than that of the United States.
Lola has a total of 45 beads. Some are black and some are white. The ratio of the number of black beads to the number of white beads is 7:2. How many more black beads little white beads are there?
Answer:
The answer is 35:10
Step-by-step explanation:
Answer:
25
Step-by-step explanation:
Add the parts of the ratio to get the whole (7 + 2). Divide the total number of beads and the sum of the ratio to find out how many times you'll multiply (45 ÷ 9). Use the ratio to multiply by 5 (5 • 7) and (5 • 2).
There are 35 black beads and 10 white beads.
So, there are 25 more black beads than white beads.
Let u= -9, 4 , v= 8, -5 . find u-v.
a- -1, -1
b- -13, 13
c- -17, 9
d- -4, -4
Answer:
C. -17, 9
Step-by-step explanation:
u = -9, 4
v = 8, -5
u - v
= (-9, 4) - (8, -5)
= (-9 - 8), (4 - (-5))
= -17, 9
64
4+4x U
K
36
27
72
T
96
L
Find the value of x.
The value of {x} is equivalent to 7.
What are algebraic expressions?In mathematics, an expression or mathematical expression is a finite combination of symbols that is well-formed according to rules that depend on the context.Mathematical symbols can designate numbers (constants), variables, operations, functions, brackets, punctuation, and grouping to help determine order of operations and other aspects of logical syntax.Given are two triangles ΔJTU and ΔJLK.
The triangles ΔJTU and ΔJLK are similar.
We can write the proportional relation as -
{JU/JK} = {JT/JL}
{- 4 + 4x/64} = {27/72}
{- 4 + 4x/64} = 3/8
- 4 + 4x = 24
4x = 28
x = 7
Therefore, the value of {x} is equivalent to 7.
To solve more questions on algebraic expressions, visit the link below -
brainly.com/question/1041084
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The value of x is 7.
What are similar triangles?Two triangles are similar if the angles are the same size or the corresponding sides are in the same ratio. Either of these conditions will prove two triangles are similar.
From the given figure,
Consider ΔJKL and ΔJUT
If T and U are midpoints on JL and JK, then TU is parallel to LK.
Then ∠T=∠L (Corresponding angles)
∠U=∠K (Corresponding angles)
Hence, ΔJKL is similar to ΔJUT
Now, JT/JL = JU/JK = TU/LK
27/72 = -4+4x/64 = 36/96
9/24 = -4+4x/64 = 12/32
3/8 = -4+4x/64 = 3/8
-4+4x/64 = 3/8
-4+4x=24
4x=28
x=7
Therefore, the value of x is 7.
To learn more about the similar triangles visit:
https://brainly.com/question/25882965.
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it takes 30 kids 6 hours to build a man sized Sand Castle. how many kids were there if the same game took only two-and-a-half hours
Answer:
There were 72 kids there.
Step-by-step explanation:
This question can be solved using proportions, by a rule of three.
The number of kids and time are inversely proportional, that is, if we increase the number of kids to build the castle, the time it takes will decrease. This means that to solve the rule of three, instead of applying cross multiplication, we apply line multiplication.
We have that:
30 kids - 6 hours
x kids - 2.5 hours.
Applying line multiplication
[tex]2.5x = 30*6[/tex]
[tex]x = \frac{180}{2.5}[/tex]
[tex]x = 72[/tex]
There were 72 kids there.
NEED HELP ASAP PLEASE HELP
Answer:
the second one or b. :)
Step-by-step explanation:
Please correct answer
Answer:
14.333 yards
516 inches
Answer:
3) 43 ft = 14.33 yards and 516 inches.
Step-by-step explanation:
43 ft = ? yards
Divide 43 by 3: 43 ÷ 3 = 14.33 yards
43 ft = ? inches
Multiply 43 by 12: 43 × 12 = 516 inches
Which expression does not equal to the others?
A
567 /1,000
-------------------
B
56.7 / 10,000
----------------------
C
5.67 /10
---------------------
D
56.7 /100
Answer:
B is not equal to the others
Step-by-step explanation:
Replacing x with 0.75 in x 2 will give you an answer of 0.5625
TRUE OR FALSE.
Answer
TRUE
MARK AS BRAINLIEST
a factory has 8 more than 10 times as many doors as a school which has s doors. how many doors does the factory have
Answer: 80
Step-by-step explanation:
8 times more than ten is 80
I don't understand please help
Answer:
Step-by-step explanation:
the average rate of change is the same as
the slope of a line m = (y2-y1)/(x2-x1)
to find if is positive of negative look at the line between the years given (for example between 1930 and 1940)
if from left to right the line goes downward the rate of change is negative
if from left to right the line goes upward the rate of change is positive
X^2+17x+50=0 to the nearest tenth.
Since you cannot really factor this problem easily, we are going to resort to the quadratic formula!
x= -b+or- sqrt(b^2-4ac) / 2a
x=-17+ or - sqrt(17^2-4*50) /2
x=-17+ or - sqrt89 /2
Now we just need estimate sqrt 89 which is about 9.43 and I will not bother to show the step I did to estimate its about 9.43.
So x= -17+ or -9.43 /2
x= -26.43/2 or -7.57/2
x=-13.215 or -3.785
Round to nearest tenth digit.
x= -13.2 or -3.8
Hope this helps any questions just ask in the comments.
It took Darlene 5 weeks to write 15 chapters of a book. How many weeks did it take to write 6 chapters?
Answer:
2
Step-by-step explanation:
5 weeks divded by 15 chapters times 6 chapters = 2 weeks
How many years will it take James to recover his investment?
Jules wants to put a fence around his backyard. What is the perimeter of his backyard?
How to find the coefficients
Answer:
A number used to multiply a variable. Example: 6z means 6 times z, and "z" is a variable, so 6 is a coefficient. Variables with no number have a coefficient of 1.
Step-by-step explanation:
The manager at a restaurant found that the cost to produce 150 cups of coffee is $21, while the cost to produce 300 cups of coffee is $36. assume the relationship between the cost y to produce x cups of coffee is linear.
a.) write a linear equation that expresses the cost,y, in terms of the number of cups of coffee,x.
b.) how many cups of coffee are produced if the cost of production is $56?
Answer:
[tex]y = \frac{1}{10}x + 6[/tex]
500 cups cost $56
Step-by-step explanation:
Given
[tex]x = cups[/tex]
[tex]y = cost[/tex]
[tex](x_1,y_1) = (150,21)[/tex]
[tex](x_2,y_2) = (300,36)[/tex]
Solving (a): Linear Equation
First, we calculate the slope (m)
[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
Substitute right values
[tex]m = \frac{36 - 21}{300- 150}[/tex]
[tex]m = \frac{15}{150}[/tex]
[tex]m = \frac{1}{10}[/tex]
The equation is then calculated as:
[tex]y = m(x - x_1) + y_1[/tex]
Where
[tex](x_1,y_1) = (150,21)[/tex]
[tex]m = \frac{1}{10}[/tex]
This gives:
[tex]y = \frac{1}{10}(x - 150) + 21[/tex]
Open bracket
[tex]y = \frac{1}{10}x - \frac{1}{10}*150 + 21[/tex]
[tex]y = \frac{1}{10}x - 15 + 21[/tex]
[tex]y = \frac{1}{10}x + 6[/tex]
Solving (b): Cups of coffees for $56
Substitute 56 for y in [tex]y = \frac{1}{10}x + 6[/tex]
[tex]56 = \frac{1}{10}x + 6[/tex]
Subtract 6 from both sides
[tex]-6+56 = \frac{1}{10}x + 6-6[/tex]
[tex]50 = \frac{1}{10}x[/tex]
Multiply both sides by 10
[tex]10 * 50 = \frac{1}{10}x * 10[/tex]
[tex]10 * 50 = x[/tex]
[tex]500 = x[/tex]
[tex]x = 500[/tex]
Hence: 500 cups cost $56
I need help on this question please it would mean a lot.!
Answer:
A
E
F
Step-by-step explanation:
These fractions divided equal repeating decimals.
Hope it helps and is correct!
Estelle has 6 liters of juice. If she pours 0.25 liters into each glass, how many glasses of juice will she make?
Answer:
24 glasses
Step-by-step explanation:
We are given that
Estelle has juice=6 liters
She pours juice in one glass=0.25 L
We have to find the number of glasses of juice made by her.
Using unitary method
0.25 L juice pour in 1 glass
1 L juice pour in 1/0.25 glasses
6 liters juice pour in glasses=[tex]\frac{1}{0.25}\times 6[/tex]
6 liters juice pour in 24 glasses
Hence, she will make 24 glasses of juice.
How do I solve this......?
Answer:
1.0.87
2.87/100
3.25%
4.0.25
5.35%
6.7/20
Step-by-step explanation:
f(x) = x^2 -2x -3 /x-3 identify the discontinuity
Answer:
Step-by-step explanation:
Again, parentheses would help with clarity. f(x) = (x^2-2x-3)/(x-3)
The denominator is x-3. Division by 0 is undefined, so x ≠ 3.
Pls help I’ll brainlest ASAP
Answer:
-9
Step-by-step explanation:
-6 Divided By 2/3 = -9
2/3 multiplied by -9 = -6
Your answer will be z = -6/3 or -9
If its wrong I tried-
Pls help Find the measure of angle B
Answer:
∠b = 61°
Step-by-step explanation:
∠b + 29° = 90°
∠b = 90° - 29°
∠b = 61°
Heidi earns 3% commission on jewelry she sells each week last week she sold 5,000 worth of jewelry how much did she make in commission.
Which expression can be used to determine how far around a rider has traveled after the Ferris wheel has gone around 8 times?
ANSWER FAST PLEASE
Answer:
Its A
Step-by-step explanation:
But don't believe me this is wrong
Need help with math points and brainlest
Answer:
Step-by-step explanation: