Answers
Answer:
This is your answer
Related Questions
The population of a city on April 15, 1915, was 47,175. During the period between March 1 and July 1, 1915, 1,325 new cases of smallpox occurred in the city. Of these cases, 642 persons were ill with smallpox according to surveillance reports on June 1, 1915. The monthly incident rate (per 1,000) of active cases of influence for the 4-month period was:
Answers
Answer:
the incidence rate is 28.47
Step-by-step explanation:
The computation of the monthly incident rate of active cases is shown below:
Incidence rate is
= 1325 ÷ (47175 - 642) × 1000
= (1325 ÷ 46533 ) × 1000
= 28.47
hence, the incidence rate is 28.47
Question
The perimeter of a rectangle is given by P = 2L + 2W. If a rectangle has a perimeter of 26 inches and a length of 7
inches, what is its width?
Answers
26=2(7+w). W=6
Width is 19 inches
Explanation
Perimeter(p) = 26 inches
Length(l) = 7 inches
Find Width(w)
Plan: Use p = 2l + 2w to get an equation to be solved
26 = 2(31) + 2w =>26 = 62 + 2w
Now subtract 62 from both sides of the equation
54 = 2w Now divide both sides of the equation by 2
w = 19 inches
Double Check: 26 = 2(31) + 2(27) = 62 + 54 = 26 True Reasonable/Recalculated
Answer: Width(w) = 19 inches
To learn more about inches refer to
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Please help I’m really strugglig
Answers
Answer:
[tex]y= \frac{3}{2}x[/tex]
Step-by-step explanation:
We first convert the equation into slope-intercept form.
[tex]3x + 2y = 4[/tex] is converted to [tex]y=-\frac{2}{3} x+2[/tex]
The slope of this line is [tex]-\frac{2}{3}[/tex]. The slope of the line perpendicular to this one will have a slope equal to the negative reciprocal.
The perpendicular slope is [tex]\frac{3}{2}[/tex]
Plug the new slope and the given point into the slope-intercept form to find the y-intercept.
[tex]y= \frac{3}{2}x[/tex]
Esther works for a marketing company. She earns $12 per hour, and she gets a $50 travel allowance every month. Which linear equation could be used to find her monthly pay rate?
Answers
12t x 50a= M (monthly pay rate)
what is the answer to the question and how do you answer this?
Answers
Answer:
∠FDN ≅ ∠HKJStep-by-step explanation:
G and H are parallel lines and J is the transversal.
∠FDN is corresponding angle with ∠HKJ.
The corresponding angles postulate states that, when two parallel lines are cut by a transversal, the resulting corresponding angles are congruent.
∠FDN ≅ ∠HKJPless help I want to hang my self
A rectangular prism has a length of 1į yards, a width of 25 yards, and a height of 4 yards. Enter the volume of the prism as a mixed number in simplest form in the box. yd3
Answers
Please help me!
(-6) ÷(+2)=?
Answers
Answer:
-4
Step-by-step explanation:
Answer:
[tex] - 3[/tex]
Step-by-step explanation:
Dividing a negative and a positive equals a negative: ( - ) ÷ ( + ) = ( - )
[tex] - (6 \div 2)[/tex]
Divide the number:
[tex] - 6 \div 2 = - 3[/tex]
3/18 of the teachers at Naran's school are math teachers, and 30 of the teachers are not math teachers. How many teachers are there at Naran's school?
Answers
Answer:
36 teachers total
Step-by-step explanation:
What is the percent change from 22 to 41? Round to the nearest tenth.
Answers
well, the formula is (v2-v1) over |v1| times 100. if we plug in the values, then our answer would be 86.4% change, or 86.4% increase.
Carry out the following division.
Answers
Answer:
1: 8a²
2: 9a²b²c²
Step-by-step explanation:
1: 48a³ ÷ 6a
48÷6 = 8
8a²
2: 72a³b⁴c⁵ ÷ 8ab²c³
72÷ 8 =9
9a²b²c²
Sry , I could only solve the first one
9(p-4)=-18 what does p equals ?
Answers
Answer:
2
Step-by-step explanation:
i anyone knows this question i really need help on it think you.
Answers
Answer:
27/16
Step-by-step explanation:
Divide 3/8 by 2/9 by multiplyinh 3/8 by the reciprocal of 2/9
3/8* (9/2)
Multiply 3/8 times 9/2 by multiplying the numerator time the other numerator and denomator times the other denominator
3 * 9 = 27
8 * 2 = 16
Do multiplication in the fraction
27 /16
The fundamental frequency of a certain 64.5 cm string is 352 Hz. Based on this information, what is the velocity of the wave traveling in this string?
1. 454 m/s
2. 343 m/s
3. 119 m/s
4.
227 m/s
Answers
Answer:
3. 119 m/s
Step-by-step explanation:
Solve for x.
3
24
Will mark brainliest
Answers
A university will add fruit juice vending machines to its classroom buildings if the student body president is convinced that more than 20 percent of the students will use them. A random sample of n students will be selected and asked whether or not they would use the vending machines. A large-sample test for proportions at the significance level of α = 0.05 will be performed. The null hypothesis that the proportion of all students who would use the vending machines is 20 percent will be tested against the alternative that more than 20 percent of all students would use them. For which of the following situations would the power of the test be highest?
A
The sample size is n = 750, and 20 percent of all students use the vending machines.
B
The sample size is n = 750, and 25 percent of all students use the vending machines.
C
The sample size is n = 1,000, and 25 percent of all students use the vending machines.
D
The sample size is n = 500, and 50 percent of all students use the vending machines.
E
The sample size is n = 1,000, and 50 percent of all students use the vending machines.
Answers
Answer:
E) The sample size is n = 1,000, and 50 percent of all students use the vending machines.
Step-by-step explanation:
CollegeBoard
For the following situations the power of the test be highest is, The sample size is n = 1000, and 55 percent of all students actually use the vending machines. So Option C is correct
What are the factors that affects the hypothesis test ?The power of the hypothesis test depends on three factors.
1. Sample size (n). Other things being equal, the greater the sample size, the greater the power of the test.
2. Significance level (α) : which is constant in this question.
(3) The "true" value of the parameter being tested. The greater the difference between the "true" value of a parameter and the value specified in the null hypothesis, the greater the power of the test.
Given that,
A random sample of n students will be selected
A large-sample test for proportions at the significance level of α = 0.05
The null hypothesis that the proportion of all students who would use the vending machines is 20%
Power of test would be highest,
For the largest sample size
Option C, has largest sample size
difference = true value - value specified in null hypothesis
= 55 - 20
= 35
both the conditions are satisfied for being a highest power of the test
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The probability of getting heads on a single coin flip is
1
2
. The probability of getting nothing but heads on a series of coin flips decreases by
1
2
for each additional coin flip. Enter an exponential function for the probability p(n) of getting all heads in a series of n coin flips. Give your answer in the form a(b)n. In the event that a = 1, give your answer in the form (b)n.
The equation is p(n) = .
Answers
Answer:
I hope this helps :D
Step-by-step explanation:
4
It can be done a lot easier: instead of calculating the probability of one head, two heads, three heads, ... one just needs to calculate the probability of no heads: that is simply 0.5
0.5
n
. If you subtract it from 1, you get the probability you want: it's because that's the chance of not no heads, meaning at least one head. So, the formula is: 1−0.5
1
−
0.5
n
More formally: if X is throwing at least one head,
()=1−(¬)
P
(
X
)
=
1
−
P
(
¬
X
)
, where ¬
¬
X
is throwing zero heads.
If is an angle in standard position and
its terminal side passes through point
(-1/2,radical 3 over two)
on the unit circle, then a
possible value of theta is
1) 60°
2) 120°
3) 150°
4) 330°
Answers
Salma has ridden 18 miles of a bike course. The course is 20 miles long. What percentage of the course has Salma ridden so far?
Answers
NEED HELP MY GRADES DEPEND ON IT
Explain why segments AB and AC have the same length.
Answers
Answer:
Radius
Step-by-step explanation:
All the circle are passed through center of the each circle
The length of a photograph is 4 in. greater than its width. The area of the photograph is
52. in? What are the dimensions of the photograph?
Answers
Answer:
Step-by-step explanation:
The length of a photograph is 4 in. greater than its width. The area of the photograph is
52. in? What are the dimensions of the photograph?
Which statement is true about the measure of angle R’??
Answers
Answer:
Angle R is an Angle
Step-by-step explanation:
This question has no photo or context
HELPPPPPPPPP Please
Answers
Answer:
x= 27/2
Step-by-step explanation:
g A test was conducted to determine if there is a difference between Canadian and American average heart rates. A group of 36 Canadians and 34 Americans were randomly selected and their heart rates measured in beats per minute (bpm). The mean heart rate for Canadians was 68.5 and 70 for Americans. The pooled standard deviation of 2.0 beats/minute was calculated. Estimate a plausible range of differences between the mean heart rate of Canadians and Americans. What statistical procedure should be used to answer this research question
Answers
Answer:
The test statistic | t | =4.45
Step-by-step explanation:
Step(i):-
Given that the first sample size n₁ = 36
Given that the second sample size n₂ = 34
Mean of the first sample x₁⁻ = 68.5
Mean of the second sample x₂⁻ = 70
Step(ii):-
Test statistic
[tex]t = \frac{x^{-} _{1}-x^{-} _{2} }{\sqrt{S^{2} (\frac{1}{n_{1} }+\frac{1}{n_{2} } } )}[/tex]
[tex]t = \frac{68.5-70}{\sqrt{2(\frac{1}{36}+\frac{1}{34} ) } }[/tex]
[tex]t = \frac{-1.5}{0.337} = -4.45[/tex]
The test statistic | t | = |-4.45| =4.45
The test statistic is given by t and t is calculated with the help of the test statistic formula. The value of t is 4.45.
What is test statistics?The test statistic summarises the observation data into a unique number using central tendency, the variation, sample, and size in your statistical model.
The given information will be shown below.
The first sample size n₁ = 36
The second sample size n₂ = 34
The mean of the first sample x₁ = 68.5
The mean of second sample x₂ = 70
Then the test statistic will be given as
[tex]\rm t = \dfrac{x_1 - x_2}{\sqrt{S^2 (\dfrac{1}{n_1}+\dfrac{1}{n_1})}} \\\\\\\t = \dfrac{68.5 - 70}{\sqrt{2 (\dfrac{1}{36} + \dfrac{1}{34})}} \\\\\\t = \dfrac{-1.5}{0.337}\\\\\\t = -4.45[/tex]
The test statistic | t | = |–4.45| = 4.45
More about the test statistic link is given below.
https://brainly.com/question/15236063
Can someone help me on problem 2
Please ?
Answers
Answer:
x=48
Step-by-step explanation:
48/4=12
please mark brainiest
thank you
3.) Use the distributive property to re write each expression. 5(2x+7)
Your answer
Answers
hope this helps .
determine the measure of each angle: x,y and z
PLS HELP
Answers
Answer:
x=42°
y=64°
z=68°
Step-by-step explanation:
Consider the triangle towards the right with 90° and 48° marked. The other angles must equal 42° (angles in a triangle add to 180, 42+48+90=180). This 42° angle is vertically opposite x, so x=42°.
The triangle that contains z also contains the angle 22° and 90° (because it is on a straight line with another 90° angle and the angles along a straight line add up to 180 (90+90=180)). Since the angles in a triangle add to 180, z=68°. (68+22+90=180)
The angles z, 48° and y lie along a straight line. Since the angles along a straight line equal 180 and since we know that z=68°, we can say y=64° (68+64+48=180)
Answer:
Solve for x: (use triangle sum theorem)
48+90+x=180
x = 42 (vertical angles)
Solve for y: (Find z first, then use triangle sum theorem)
68+48+z=180
y = 64
Solve for z: (triangle sum theorem)
22+90+z=180
z=68
Directions: Solve for x. Round to the nearest tenth
1.
х
63°
16
Answers
I am going to attach a picture for the steps.
x=7.26
find m<1 in the rhombus below
Answers
Answer:
[tex] m \angle \: 1 = 120 \degree[/tex]
Step-by-step explanation:
Given figure is of a rhombus.
Measures of the opposite angles of a rhombus are equal.
Therefore,
[tex]m \angle \: 1 = 120 \degree[/tex]
Determine the volume and the total surface area of the square pyramid.if its perpendicular height is 12cm and square length is 5cm
Answers
Answer:
Volume = 100 cm³
Surface area of the square pyramid = 145 cm²
Step-by-step explanation:
Given:
Perpendicular height = 12cm
Square length = 5cm
Find:
Volume
Surface area of the square pyramid
Computation:
Area of base = side²
Area of base = 5²
Area of base = 25 cm²
Volume = (1/3)(A)(h)
Volume = (1/3)(25)(12)
Volume = 100 cm³
Surface area of the square pyramid = A + 1/2(P)(h)
Perimeter square pyramid = 4(s)
Perimeter square pyramid = 4(5)
Perimeter square pyramid = 20 cm
Surface area of the square pyramid = 25 + 1/2(20)(12)
Surface area of the square pyramid = 145 cm²
Joachim has as many marbles as Leanne. Leanne has as many marbles as Alex. If Alex has
36 more marbles than Joachim, how many marbles do they have altogether?
Answers
Answer:
76
Step-by-step explanation:
