Answer:
x+y=12
Step-by-step explanation:
First, substitute 3y for the spots with x:
2(3y) + 2y = 24
6y+ 2y = 24
8y= 24
y= 3
Then sub in 3 in the y place:
x= 3(3)
x= 9
Then plug in the x and y values in the equation:
9 + 3 =12
Good Luck!!!
plz mark me Brainliest!
True or false?
When multiplying fractions, you flip the second fraction to solve.
True - Keep the first fraction the same then flip to solve the MULTIPLICATION problem
True - Only when the second number is a whole number
False - Only when the second number is a whole number
False - You ONLY flip the second fraction when you have a FRACTION DIVISION problem. Keep, change, flip.
Answer:
True - Keep the first fraction the same then flip to solve the MULTIPLICATION problem
Step-by-step explanation:
Answer:
It would be A, True - Keep the first fraction the same then flip to solve the MULTIPLICATION problem.
Step-by-step explanation:
show work , I’ll vote you brainliest if it is correct . Thank you
Answer:
Whats the question to this problem? Do you want to know if it's correct?
i can help! Just show your work? 1/2 times whatever X is + X+1 over whatever X is = 1/2 i can get the answer if you need it unless what i said helped! :) Your welcome!
Step-by-step explanation:
Have a great week! Hope i helped! Plz dont delete answer i promise i will help and it will be correct!
what is 13 times 95 divided by .35?
Answer:
3,528.57142857
Step-by-step explanation:
Answer:
[tex]3528\frac{4}{7}[/tex]
Step-by-step explanation:
13 × 95 ÷ 0.35
1235 ÷ 0.35
[tex]3528\frac{4}{7}[/tex]
Need help on this please
Answer:
25[tex]\pi[/tex]
Step-by-step explanation:
[tex]\pi[/tex][tex]r^{2}[/tex]=area of circle
[tex]\frac{1}{4}[/tex][tex]\pi[/tex][tex]r^{2}[/tex]=1/4 of the area of a circle
now solve
[tex]\frac{1}{4}[/tex][tex]\pi[/tex][tex]10^{2}[/tex]
[tex]\frac{1}{4}[/tex][tex]\pi[/tex]100
25[tex]\pi[/tex]
answer 3+3 for 100 points brainlyist to first answer
(yes i know it's simple I'm not d u m b)
Answer:
6
Step-by-step explanation:
plz me
Answer:
6
Step-by-step explanation:
can i have brainliesyt
Solve the right triangle. Round decimal answers to the nearest tenth.
B
14
6
A
b
С
Answer:
A^2 + B^2 = C^2
6^2 + 14^2=c^2
36+196=C^2
232=c^2
square root of 232= c
therefore c is equal to 15,23
Step-by-step explanation:
use the Thereom of Pythagoras
Solve the two-step equation.
14 = 31.7 – 3x
What is the solution?
Answer:
The answer is 5.9
Step-by-step explanation:
1) Subtract 31.7 from both sides.
[tex]14 - 31.7 = - 3x[/tex]
2) Simplify 14 - 31.7 to -17.7
[tex] - 17.7 = - 3x[/tex]
3) Divide both sides by -3.
[tex] \frac{ - 17.7}{ - 3} = x[/tex]
4) Simplify -17.7/-3 to 5.9
[tex]5.9 = x[/tex]
5) Switch sides.
[tex]x = 5.9[/tex]
Therefor, the answer is x = 5.9.
What is the range of the data below?
A: 22
B: 28
C: 41
D: 42
Answer:
20
Step-by-step explanation:
42 is the biggest and the smallest is 22 so 42-22 = 20!
A sports shop has 80 employees. 90% of the employees work
part-time. How many part-time employees does the sports shop
have? If necessary, round to the nearest whole number. (Include
the units)
Answer:
72
Step-by-step explanation:
90/100 x 80 = 72 employees
The average weight of a package of rolled oats is supposed to be at most 18 ounces. A sample of 18 packages shows a mean of 18.20 ounces with a sample standard deviation of 0.50 ounces. (a) at the 5 percent level of significance, is the true mean larger than the specification
Answer:
Pvalue of 0.0446 < 0.05, which means that we reject the null hypothesis and accept the alternative hypothesis, that the true mean is larger than the specification.
Step-by-step explanation:
The average weight of a package of rolled oats is supposed to be at most 18 ounces.
This means that the null hypothesis is:
[tex]H_{0}: \mu \leq 18[/tex]
Is the true mean larger than the specification?
Due to the question asked, the alternate hypothesis is:
[tex]H_{a}: \mu > 18[/tex]
The test statistic is:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis, [tex]\sigma[/tex] is the standard deviation and n is the size of the sample.
18 is tested at the null hypothesis:
This means that [tex]\mu = 18[/tex]
A sample of 18 packages shows a mean of 18.20 ounces with a sample standard deviation of 0.50 ounces.
This means that [tex]n = 18, X = 18.2, \sigma = 0.5[/tex]
Value of the test statistic:
[tex]z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{18.2 - 18}{\frac{0.5}{\sqrt{18}}}[/tex]
[tex]z = 1.7[/tex]
Pvalue of the test:
Probability of finding a sample mean above 18.2, which is 1 subtracted by the pvalue of z = 1.7.
Looking at the z-table, z = 1.7 has a pvalue of 0.9554.
1 - 0.9554 = 0.0446
0.0446 < 0.05, which means that we reject the null hypothesis and accept the alternative hypothesis, that the true mean is larger than the specification.
Can someone help me pls
Answer:
70°
Step-by-step explanation:
If arc BY is 40, angle BAY is 20.
BAC is 90.
90-20 is 70.
m<YAC=70
Jeremiah conducts a survey and finds that as the first variable in his survey increases, the
second variable in his survey decreases. What type of association is there between the
two variables in his survey?
Answer:
Negative Association.
Step-by-step explanation:
Association between variables:
Association between variables can be classified as positive or negative.
Positive: Both move in the same direction, that is, either both increase or both decrease.
Negative: The variables move in opposite directions, one increases and the other decreases.
In this question:
As the first increases the second decreases, that is, they move in opposite directions, so it is a Negative Association.
Choose the number sentence that illustrates the distributive property of multiplication over addition.
8 x (6 + 4) = (8 + 6) * (8 + 4)
8 x (6 + 4) = (8 x 6) + (8 x 4)
8 x (6 + 4) = (8 x 6) + 4
ZA and ZB are vertical angles. If mZA = (3.C – 9)° and m B = (x+3)°, then find the value of x.
Answer:
x = 6
Step-by-step explanation:
Vertical angles in a geometry are equal. Hence m<A = m<B
Given that
m<A = 3x - 9
m<B - x+3
Then 3x - 9 = x+3
3x - x = 3 + 9
2x = 12
Divide both sides by 2
2x/12 = 12/2
x = 6
Hence the value of x is 6
geometry question pls help!!!
Find measure of angle BPD
A-9 degrees
B- 14 degrees
C- 155 degrees
D- 146 degrees
Answer:
(C). 155°
Step-by-step explanation:
what is the value of 7|H| + 4G?
Answer:
a-70
Step-by-step explanation:
28+42=70
Hi!
7|H| + 4G = 7 * |-6| + 4 * 7 =
= 7 * 6 + 4 * 7 = 42 + 28 = 70
Grettings!
Suppose the family wise error rate is 0.05, if there are ten levels of one factor but only 5 comparisons are of importance, what would the individual error rate need to be for each of those 5 comparisons? Group of answer choices 5 0.01 .05 0.10
Answer:
Individual error rate = 0.01
Therefore, Option b) 0.01 is the correct answer
Step-by-step explanation:
Given the data in the question;
family wise error rate ∝ = 0.05
there are ten levels of one factor but
important comparisons m = 5
the individual error rate need to be for each of those 5 comparisons = ?
we know that;
individual error rate = family wise error rate ∝ / important comparisons m
so we substitute
individual error rate = 0.05 / 5
individual error rate = 0.01
Therefore, Option b) 0.01 is the correct answer
Solve for t
4/3 = t/7
Answer:
[tex]\frac{28}{3}=t[/tex]
Step-by-step explanation:
[tex]\frac{4}{3}=\frac{t}{7}[/tex]
Use cross products to simplify the equation. Multiply the denominator of the second fraction by the numerator of the first fraction, and the denominator of the first fraction by the numerator of the second,
[tex](4)(7) = (3)(t)[/tex]
Simplify,
[tex]28=3t[/tex]
Inverse operations,
[tex]\frac{28}{3}=t[/tex]
What are the vertices of the hyperbola whose equation is = 1? (−17,−6) and (1,−6) (−15,−6) and (−1,−6) (−8,−15) and (−8, 3) (−8,−13) and (−8, 1)
Answer:
(-8, -15) and (-8, 3)
Step-by-step explanation:
got it right on test
option 3 on edge21
Answer:
c on edge
Step-by-step explanation:
What is the equation of the line that is parallel to the line y = 3x - 4 and passes
through the point (4, -2)?
A. Y= 3x + 2
B. y= 3x - 14
O C. --}x
D. y = 3x + 14
Answer:
B. y = 3x - 14
Solve using the distributive property:
20 (3 + 8)
Answer:
60+160
Step-by-step e
Answer:
60+160 or 220
Step-by-step explanation:
20(3+8)
multiple 20 by 3 and 8
60+160
add 60 and 160 which is 220
2
What is the volume of the solid below?
16 m
15 m
17 m
3840 m
1360 m
2040 m
4080 m
Answer:
Is there supposed to be a picture?
Which of the following is the equation of the line below?
Pls help
Answer:
x+y =-6 you can write this equation
David wants to test a claim about a population mean. The population standard deviation is unknown, the sample is a simple random sample of size 20, and the population is normally distributed. In this case, the t-test should be used since σ is unknown. If David incorrectly uses the z-distribution instead of the t-distribution, will he obtain a P-value that is too big or too small? Explain your thinking. Will he be more likely or less likely to reject the null hypothesis than if had correctly used the t-distribution?
Answer:
a)The P-value will be too small
b) He will reject the Null hypothesis
Step-by-step explanation:
a) If David incorrectly uses the z-distribution instead of the t-distribution, he will obtain a p-value that is too small because p-values obtained using Z distribution are smaller when compared to p-values obtained using t-distribution
b) He will reject the Null hypothesis given that the P value he will obtain will be very different from the one he obtained using z-distribution
A study of 420,027 cell phone users found that 133 of them developed cancer of the brain or nervous system. Prior to this study of cell phone use, the rate of such cancer was found to be 0.0414% for those not using cell phones. Complete parts (a) and (b). a. Use the sample data to construct a 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system.
Answer: (0.00027144, 0.00036176)
Step-by-step explanation:
The sample proportion of cell phone users who develop cancer of the brain or nervous system = [tex]\dfrac{133}{420027}=0.0003166[/tex]
Sample size : 420027
Confidence interval for p: [tex]\hat{p}\pm z^*\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}[/tex], where [tex]\hat{p}[/tex]= sample proportion , n= sample size , z* = crirical z value.
For 90% confidence interval , z*= 1.645
Required confidence interval:
[tex]0.0003166\pm (1.645)\sqrt{\dfrac{0.0003166(1-0.0003166)}{420027}}\\\\=0.0003166\pm 0.00004516\\\\=(0.0003166-0.00004516,\ 0.0003166+ 0.00004516)\\\\=(0.00027144, \ 0.00036176)[/tex]
A 90% confidence interval estimate of the percentage of cell phone users who develop cancer of the brain or nervous system = (0.00027144, 0.00036176)
find the solution of the system of equations.
Answer:
(-6,-3)
Step-by-step explanation:
solve using substitution or elimination
1219 kg of Swiss cheese is packaged in 3 kg bags. Will there be any cheese left over? How do you know?
Answer:
1 cheese is left over.
Step-by-step explanation:
Given that,
1219 kg of Swiss cheese is packaged in 3 kg bags.
i.e. 3 kg bags = 1219 kg of Swiss cheese
Implies, 1 kg bag = [tex]\dfrac{1219}{3}[/tex] kg of swiss cheese
If we divide 1219 by 3, we get [tex]46\dfrac{1}{3}[/tex]. Here, 46 is the quotient and 1 is the remainder.
It means 1 cheese is left over.
Find the value of x (please I need help)
Answer:
48°
Step-by-step explanation:
All the angles in a triangle sum up to 180°.
Therefore,
x°+74°+58°=180°
→x°+132=180°
x°=180-132=48°
solve the system by substitution......
Answer:
(4,8) is the answer.
Step-by-step explanation:
To solve by substitution, you need to isolate a variable. The bottom equation already has y isolated, so we can just plug that into the other equation:
[tex]2x=-2x+16[/tex]
Add [tex]2x[/tex] to both sides in order to get rid of the [tex]-2x[/tex] on the right side:
[tex]4x=16[/tex]
Now divide by 4 on both sides to get:
[tex]x=4[/tex]
That gives us our x. Now plug in that x into either equation. I will just choose the bottom equation:
[tex]y=2(4)\\y=8[/tex]
Therefore the solution to this problem is (4,8).
Pls help me. My assignment is due in half an hour. Thank you.
A rectangular card has a length 3 inches longer than twice the width. The area is 324 inches squared. What are the dimensions of the card in inches? Order your answer from least to greatest.
Answer:
w=12 L=27
Step-by-step explanation:
length is twice the width with additional 3 inches
12×2=24+3=27
12×27=324
