Answer:
5 to the power of 2
Step-by-step explanation:
when dividing numbers with same bases, different exponets...
you have to subtract the exponet
5-3=2
(base stays the same)
miguel works at a video game store if he makes 185$ a day how much money will he maje in 30 days
Answer:
5550
Step-by-step explanation:
if one day is 185 and he works for 30 days you just have to multiply them
If rectangle ABCD is dilated by a scale factor of 3 with a center of dilation at vertex D. what is the perimeter of
A'B'CD?
A)
30 units
B)
60 units
90 units
D)
120 units
Tickets to a museum cost $16 each. For a trip, the museum offers a $4 discount on each ticket. How much will tickets cost for 31 students cost?
Answer:
$372
Step-by-step explanation:
$16-4=12/ticket
$12 x 31=$372
solve for x:
5/7 = 4x/83
Step-by-step explanation:
[tex] \to \dfrac{5}{7} = \dfrac{4x}{83} [/tex]
By cross multiplication,
→ 83(5) = 4x(7)
→ 415 = 28x
→ 415/28 = xIn decimal : 14.8214286According to a study in a medical journal, 202 of a sample of 5,990 middle-aged men had developed diabetes. It also found that men who were very active (burning about 3,500 calories daily) were a fourth as likely to develop diabetes compared with men who were sedentary. Assume that one-fifth of all middle-aged men are very active, and the rest are classified as sedentary. What is the probability that a middle-aged man with diabetes is very active
Answer:
0.0588 = 5.88% probability that a middle-aged man with diabetes is very active
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]
In which
P(B|A) is the probability of event B happening, given that A happened.
[tex]P(A \cap B)[/tex] is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Has diabetes.
Event B: Is very active.
Probability of having diabetes:
To find this probability, we take in consideration that:
It also found that men who were very active (burning about 3,500 calories daily) were a fourth as likely to develop diabetes compared with men who were sedentary. Assume that one-fifth of all middle-aged men are very active, and the rest are classified as sedentary.
So the probability of developing diabetes is:
x of 4/5 = x of 0.8(not active)
x/4 = 0.25x of 1/5 = 0.2(very active). So
[tex]P(A) = 0.8x + 0.25*0.2x = 0.85x[/tex]
Probability of developing diabetes while being very active:
0.25x of 0.2. So
[tex]P(A \cap B) = 0.25x*0.2 = 0.05x[/tex]
What is the probability that a middle-aged man with diabetes is very active?
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.05x}{0.85x} = \frac{0.05}{0.85} = 0.0588[/tex]
0.0588 = 5.88% probability that a middle-aged man with diabetes is very active
please what is the interquartile range ?
Answer:
3.
Step-by-step explanation:
15 - 12 = 3.
The ends of the box are the lower and upper quartiles.
The difference upper - lower = the interquartile range.
A popular internet subscription service for movies, TV series, and documentaries conducts a survey in which it randomly samples 1,000 of its customers. The survey asks the customers which way they use their streaming service the most: (1) watching movies, (2) watching TV series, or (3) watching documentaries. They also ask the level of satisfaction with the service they most often use (on a scale of 0 to 10 with 0 very poor and 10 excellent). Is there statistical evidence for this internet subscription service that the mean satisfaction differs between customers who watch movies, TV series, or documentaries the most?
(a) State the hypothesis for conducting ANOVA. What were the assumptions on which the ANOVA was based?
(b) What F test statistic is needed to reject the null hypothesis at the signficance level 0.05?
(c) Suppose the test statistic is observed at F 0.46 and the p-value equals 0.63. State your conclusion in the context of this problem using the significance level .01.
help i keep on getting answers that are not what I am looking for
Omar, Hala and Lujain got paid a total of $240 for cleaning neighborhood cars. They split the money in the ratio of 5: 9: 10. How much less does Hala earn than Lujain?
Write an algebraic expression for the situation.
28 divided by a number g
An algebraic expression for the situation is _
Answer:
28/g
Step-by-step explanation:
28/g
Answer:
28/g
Step-by-step explanation:
easy interpretation
28÷g
A recipe calls for 21 scoops of sugar. each scoop is 2.5 oz. how many scoops do you need if each scoop holds 3.5 oz of sugar ?
Answer:
we need 6 scoops of sugar
What is the length of VW?
Answer:
2,4 is the wi5h ofe ithink
(x+6)(x-4)=
(2x+5)(x-3)=
(3x+2)(2x+5)=
(2x-1)(x-5)=
please help this is multiplying polynomial expressions
Answer
1. x²+2x-24
2. 2x²-1x-15
3. 6x²+19x+10
4. 2x²-11x+5
Answer:
[tex]x^{2} +2x-24[/tex]
[tex]2x^{2}-x-15[/tex]
[tex]6x^{2}+19x+10[/tex]
[tex]2x^{2}-11x+5[/tex]
Step-by-step explanation:
A publisher reports that 30% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 110 found that 20% of the readers owned a laptop. Determine the P-value of the test statistic. Round your answer to four decimal places.
Answer:
Test statistic = - 2.29
Pvalue = 0.0110
Step-by-step explanation:
The hypothesis :
H0 : p = 0.3
H1 : p < 0.3
Test statistic :
z=pˆ−p/√p(1−p)/n
pˆ = 0.2
Z = (0.20 - 0.30) / √(0.30(1 - 0.30) / 110
Z = - 0.1 / √0.0019090
Z = - 0.1 / 0.0436931
Z = - 2.29
Test statistic = -2.29
The Pvalue :
P(Z < -2.29) = 0.0110
A railroad tunnel is shaped like a semiellipse, as shown below.
A semiellipse is shown on the coordinate plane with vertices on the x axis and one point of intersection with the positive y axis.
The height of the tunnel at the center is 35 ft, and the vertical clearance must be 21 ft at a point 8 ft from the center. Find an equation for the ellipse.
If x + 9 = 5, then x =
If x +9=-5, then x =
Answer:
A= 4
B=-13
Step-by-step explanation:
URGENT!! PLS HELP 16 students are competing an art contest in how many different ways can students finish first second and third
The measure of ZA is 18° greater than the measure of ZB. The two angles are complementary. Find the
measure of each angle.
i would like the work but i don’t need it
Answer:
3
Step-by-step explanation:
the frequency is the number of students. Add the frequency for 30-39 and 40-49, which is 2+1 =3
Can anyone help me on algebra one it’s nine grade level
Answer:
Hello middleschoolvibes says he is good at algebra and would like to help you if you post them.
50 POINTS. A ball is thrown into the air from a height of 4 feet at time t = 0. The function that models this situation is h(t)= -16t^2 + 64t + 4, where t is measured in seconds and h is the height in feet. What domain makes sense for this function
Answer:
The domain that makes sense for this function is all values greater than or equal to 0.
Step-by-step explanation:
A ball is thrown into the air from a height of 4 feet at time t = 0. It is modeled by the function:
[tex]h(t)=-16t^2+64t+4[/tex]
The domain of the function is time t. The range of the function is the ball's height in the air h.
Since time is our domain, we must restrict our domain to values equal to or greater than 0 since time cannot be negative.
Therefore, the domain that makes sense for this function is all values greater than or equal to 0.
In interval notation, this is:
[tex][0, \infty)[/tex]
And as an inequality:
[tex]t\geq 0[/tex]
Two six-sided dice (number cubes) are rolled. Find the probability P(sum of 8 or doubles).
1/3 third
11/36
7/18
5/18
Answer:
5/18
Step-by-step explanation:
The attached chart shows all 36 outcomes, equally likely.
There are 6 outcomes that are doubles (along a diagonal), 5 outcomes that have a sum of 8, but the (4, 4) outcome should only be counted once!
You're interested in 6 + 5 - 1 = 10 outcomes out of the 36 possible outcomes.
Probability of double or sum = 8: 10/36 = 5/18
Card Eleven
What is the area of the figure?
х
3x + 1
6
2x
What”s the correct answer??
Answer:
t = 1.25j
Step-by-step explanation:
t = 1.25j
Examples:
4 x 1.25 = 5
7 x 1.25 = 8.75
10 x 1.25 = 12.5
Hope this helps!
Answer:
t = 1.25j
Step-by-step explanation:
A store buys a jacket for $20.00 and sells it to customers for 80% more than that. What is the selling price of the jacket
Which equation represents the line shown
on the graph?
x = y + 2
y = x + 2
y = 2x
x = 2y
Answer:
weres the graph?
Step-by-step explanation:
Pls help me find out what this question is plss
Solve the equation x^2 - 16x+ 54 = 0 by completing the square.
Fill in the values of a and b to complete the solutions.
Answer:
[tex]x = 8\±\sqrt{10[/tex]
[tex]a =8[/tex] [tex]b = 10[/tex]
Step-by-step explanation:
Given
[tex]x^2 - 16x + 54 = 0[/tex]
Required
Complete the square
[tex]x^2 - 16x + 54 = 0[/tex]
Subtract 54 from both sides
[tex]x^2 - 16x + 54 -54= 0-54[/tex]
[tex]x^2 - 16x = -54[/tex]
--------------------------------------------------
Take half of - 16
[tex](-16/2) = -8[/tex]
Square the result
[tex](-8)^2 = 64[/tex]
Add the squared result to both sides of the equation
--------------------------------------------------
So, we have:
[tex]x^2 - 16x +64= -54+64[/tex]
[tex]x^2 - 16x +64= 10[/tex]
Expand
[tex]x^2 - 8x - 8x + 64 = 10[/tex]
Factorize
[tex]x(x - 8) - 8(x - 8) = 10[/tex]
Factor out x - 8
[tex](x - 8)(x - 8) = 10[/tex]
[tex](x - 8)^2 = 10[/tex]
Take square roots
[tex]x - 8 = \±\sqrt{10[/tex]
Solve for x
[tex]x = 8\±\sqrt{10[/tex]
We have:
[tex]x = a - \sqrt{b}[/tex]
[tex]x = a + \sqrt{b}[/tex]
By comparing the above with: [tex]x = 8\±\sqrt{10[/tex]
Answer:
Step-by-step explanation:
What is The volume of the composite shape
Answer:
150 inches.
Step-by-step explanation:
There are 2 cubes in this image.
1 - 7 * 3 * 5 = 105
2 - 3 * 5 * 3 = 45
105 + 45
= 150
Answer:
The answer is 150 inches
Water Tank A water tank is shaped like the cone shown here. How much water can
the tank hold? Use 3.14 for a. If water is drained from the tank to fill smaller tanks
that each hold 200 m² of water, how many smaller tanks can be filled?
Answer:
The tank can hold about 1077.02 m^2.
About 5 200 m^2 tanks could be filled.