Answer:
-8
Step-by-step explanation:
to isolate x you have to divide both sides by 5/4 and -10/(5/4) is -8
Pls help I forgot how this works
— 7x — бу = — 15 Determine the intercepts of the line.
Answer:
see below
Step-by-step explanation:
— 7x — бу = — 15
To find the x intercept set y = 0 and solve for x
-7x - 0 = -15
-7x= -15
Divide by -7
-7x/-7 = -15/-7
x = 15/7
The x intercept is (15/7,0)
To find the y intercept set x = 0 and solve for y
o— бу = — 15
— бу= -15
Divide by -6
— бу/-6= -15/-6
у= 5/2
The y intercept is (0,5/2)
Find the volume. *
10 in
11 in
ABC ~ AYZ , what's the value of x?
Answer:
Step-by-step explanation:
6cm
35,621 rounded to the hundreds place
Answer:35,621.00
Step-by-step explanation:
Answer:
35,600
Step-by-step explanation:
Your ound to the nearest hundred place
1/7+2/3= plz help ive been stuck on the question
Answer:
1/7+2/3
3+14/21
17/21
Answer:
17/21
Step-by-step explanation:
1/7 + 2/3
1/7 = 3/21
2/3 = 14/21
then:
1/7 + 2/3 = 3/21 + 14/21
= (3+14)/21
= 17/21
Question 1
Move the slider to rotate △ABC. at which angles does △A’ B’ C’ coincide with △ABC △DEF △GHI △JKL
Answer:
Step-by-step explanation:
△JKL
What is 2+2?
a.) 5
b.) 9
c.) k
d.) 4
Answer:
D.) 4
Step-by-step explanation:
Deena drove 585 miles in 9 hours . Kristen drove 605 miles in 11 hours who drove faster?
Answer:
deena
Step-by-step explanation:
585/9=65mph
605/11=55mph
brainliest plz
Answer:
Deena
Step-by-step explanation:
Deena drove 585 miles in 9 hours divide 585 by 9=65
Kristen drove 605 miles in 11 hours divide 605 by 11=55
perimeter of figure
Answer:
30 maybee
Step-by-step explanation:
idrk but i mean if it isnt 30 tell meeee
What is the solution to -4 (2x +6)=-24
Answer:
x=0
Step-by-step explanation:
Distribute -4
-8x - 24 = -24
Add 24 to both sides
-8x = 0
x=0
Answer:
x=0
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
−4(2x+6)=−24
(−4)(2x)+(−4)(6)=−24(Distribute)
−8x+−24=−24
−8x−24=−24
Step 2: Add 24 to both sides.
−8x−24+24=−24+24
−8x=0
Step 3: Divide both sides by -8.
−8x
−8
=
0
−8
x=0
Answer:
x=0
Is there statistically significant evidence that the districts with smaller classes have higher average test scores? The t-statistic for testing the null hypothesis is nothing. (Round your response to two decimal places.) The p-value for the test is nothing. (Round your response to six decimal places.) Hint: Use the Excel function Norm.S.Dist to help answer this question. Is there statistically significant evidence that the districts with smaller classes have higher average test scores? The ▼ small p-value large p-value suggests that the null hypothesis ▼ cannot be rejected can be rejected with a high degree of confidence. Hence, ▼ there is there is no statistically significant evidence that the districts with smaller classes have higher average test scores.
Complete Question
The complete question is shown on the first uploaded image
Answer:
The 95% confidence interval is [tex] [670.03 , 673.97 ] [/tex]
The test statistics is [tex]t = 7.7 [/tex]
The p-value is [tex]p-value = 0[/tex]
The p-value suggests that the null hypothesis is rejected with a high degree of confidence. Hence there is statistically significant evidence that the districts with smaller classes have higher average test score
Step-by-step explanation:
From the question we are told that
The sample size is n = 408
The sample mean is [tex]\= y = 672.0[/tex]
The standard deviation is [tex]s = 20.3[/tex]
Given that the confidence level is 95% then the level of significance is
[tex]\alpha = (100 -95 )\% = 0.05[/tex]
From the normal distribution table the critical value of [tex]\frac{\alpha }{2} = \frac{0.05 }{2}[/tex] is
[tex]Z_{\frac{\alpha }{2} } = 1.96[/tex]
Generally the margin of error is mathematically represented as
[tex]E = Z_{\frac{\alpha }{2} } * \frac{s}{\sqrt{n} }[/tex]
=> [tex]E = 1.96 * \frac{20.3}{\sqrt{408} }[/tex]
=> [tex]E = 1.970[/tex]
Generally the 95% confidence interval is mathematically represented as
[tex]\= y -E < \mu < \= y + E[/tex]
=> [tex] 672.0 -1.970 < \mu < 672.0 +1.970[/tex]
=> [tex] 670.03 < \mu < 673.97[/tex]
=> [tex] [670.03 , 673.97 ] [/tex]
From the question we are told that
Class size small large
[tex]Avg.score(\= y)[/tex] [tex]\= y_1 = 683.7[/tex] [tex]\= y_2 = 676.0[/tex]
[tex]S_y[/tex] [tex]S_{y_1} =20.2[/tex] [tex]S_{y_2} = 18.6[/tex]
sample size [tex]n_1 = 229[/tex] [tex]n_2 = 184[/tex]
The null hypothesis is [tex]H_o : \mu_1 - \mu_2 = 0[/tex]
The alternative hypothesis is [tex]H_a : \mu_1 - \mu_2 > 0[/tex]
Generally the standard error for the difference in mean is mathematically represented as
[tex]SE = \sqrt{\frac{S_{y_1}^2 }{n_1} +\frac{S_{y_2}^2 }{n_2} }[/tex]
=> [tex]SE = \sqrt{20.2^2 }{229} +\frac{18.6^2 }{184_2} }[/tex]
=> [tex]SE = 1.913[/tex]
Generally the test statistics is mathematically represented as
[tex]t = \frac{\= y _1 - \= y_2 }{SE}[/tex]
=> [tex]t = \frac{683.7 - 676.0 }{1.913}[/tex]
=> [tex]t = 7.7 [/tex]
Generally the p-value is mathematically represented as
[tex]p-value = P(t > 7.7 )[/tex]
From the z-table
[tex]P(t > 7.7 ) = 0[/tex]
So
[tex]p-value = 0[/tex]
From the values we obtained and calculated we can see that [tex]p-value < \alpha[/tex]
This mean that
The p-value suggests that the null hypothesis is rejected with a high degree of confidence. Hence there is statistically significant evidence that the districts with smaller classes have higher average test score
1.
Sub: Maths
Classify the following angles as acute, Right, obtuse, straight and reflex angles.
30°,40°,120°,90°,180°,650,225°,1650,300°,170°,2150,315°,75°,
340º,170°
Answer:
any angle under 90 degrees is acute. A right angle is 90 degrees always, and obtuse angles are always above 90 degrees. Straight angles are always 180 degrees. A reflex angle is more than 180 degrees but less than 360 degrees. Hope this helps.
use the given manimum and maximum data entries, and the number of classes, to find he class width, the lower class limits, and the upper class limits
minimum= 9 maximum= 66, 6 classes
The lower class and upper class limits are {9, 19, 29, 39, 49} and {10, 20, 30, 40, 50} respectively for the given class.
What is the class width of a given data set?The class width of a given class is the ratio of the difference between maximum and minimum to the number of classes.
Given, minimum= 9 maximum= 66, and classes = 6.
Therefore, class width
= [tex]\frac{maximum - minimum}{classes}[/tex]
= [tex]\frac{66 - 9}{6}[/tex]
= [tex]\frac{57}{6}[/tex]
= 9.5
Therefore, class width is 9.5.
Now, the lower class limits = {9, 19, 29, 39, 49}
The upper class limits = {10, 20, 30, 40, 50}
Learn more about class width of a given class here: https://brainly.com/question/24701109
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the total "cast" of a laptop computer is $1278.24 the local sales tax rate is 7.6% what is the retail price.
Answer:
x = 1187.96
Step-by-step explanation:
Let x = price before tax
tax = x* 7.6%
tax = .076x
The cost of the computer is price before tax plus tax
cost = x + .076x
cost = 1.076x
1278.24 = 1.076x
Divide each side by 1.076
1278.24/1.076 = 1.076x/1.076
x=1187.9553
Rounding to the nearest cent
x = 1187.96
You earn $12.50 an hour at your job. How many hours do you need to work to
make more than $425?
Find the measure of ZX.
A)
26°
B)
30°
09
36°
D)
39°
Answer:
The answer would be 36°.
Graph the function on your own paper. Answer the qustions in the box below.
What is the y-intercept?
Explain how the graph is related to the monomials from which it is built.
Answer:
Step-by-step explanation:
your answer is 0
How many legs do 8 ants have??
Answer:
8 ants have 48 legs.
Step-by-step explanation:
An ant has 6 legs so all we would have to do is 6*8 = 48.
What is 15 1/6 + 18 3/4?
my calculator says 851/12 or 70 11/12
miguel is working hard to save for a video game. he received $20 as a gift and gets $4 per week (x) in allowance. write the equation for the total amount of money he has saved, based on the number of weeks
Answer:
5
Step-by-step explanation:
x represents how much money he gets per week and if he got twenty dollars all together and gets four dollars a week then x represents 5 because 5 times 4 equals twenty and in the problem the letter that represents the number of weeks is x divide twenty by x if the number is 4 divide 20 by four and you'll get 5
С
3х +6
2х + 4
D
B
E
О 24
32
Оооо
34
Answer:
34
Step-by-step explanation:
Since AD is a straight line the sum of ABC and DBC would be equal to 180°
2x + 4 + 3x + 6 = 180 add like terms
5x + 10 = 180 subtract 10 from both sides
5x = 170 divide both sides by 5
x = 34
6. Jesse has 25 coins in his pocket, some are quarters, and some are dimes. If he has a
total of $5.05 in his pocket, how many of each type of coin are there?
Answer:
17 Quarters, 8 Dimes.
Step-by-step explanation:
17 x .25 = 4.25
8 x .10 = .80
4.25 + .80 = 5.05
Which pair of these numbers has 20 as a common factor?
2 and 3
2 and 6
20 and 40
Answer:
20 and 40
Step-by-step explanation:
3x7 is 21 but thats only one too much it has to be 3 too much to go down one and be a factor
6x4 is 24 it has to be 6 too much to go down one to be a factor
20x1 and 40x1/2 are both factors unless your teacher doesn't include fractions, so just choose this for now and if you get it wrong ask your teacher because three and six arent
2 1/3 ÷y=1 2/5 ÷(−1.1)
Answer:
1.2x - 10.8 - 2.3x - 9.2 = -1.1x - 20; Rewrite as follows. (x 2y)(xy 2) = (x 2 x)(y y 2) ... x + 2.3; - x / 5 = 2; (x - 4) / (- 6) = 3; (-3x + 1) / (x - 2) = -3; x / 5 + (x - 1) / 3 = 1/5 ... 2 x 2 - 8 = 0; x 2 = -5; 2x 2 + 5x - 7 = 0; (x - 2)(x + 3) = 0; (x + 7)(x - 1) = 9; x(x - 6) = -9 ... For what value of the constant k does the quadratic equation x 2 +2x = - 2k .
Step-by-step explanation:
0.7 is 10 times as great as?
Answer: 0.7 is 10 times larger than 0.07
Step-by-step explanation:
50 - (7 + (14² : 7))
Answer:
43 − ( 196 : 7 )
Step-by-step explanation:
Answer:
39
Step-by-step explanation:
14 x 2 = 28
28 / 7 = 4
7 + 4 = 11
50 - 11 = 39
Which of the following decimals is equivalent to
(
8
×
3
)
(
1
10
×
1
10
)
?
A.
0.024
B.
0.24
C.
2.4
D.
24.0
The decimal that is equivalent to (8 × 3)(1/10 × 1/10) is 0.24
How to determine which of the following decimals is equivalent?The expression is given as
(8×3)(110×110)
Rewrite the expression properly as follows
So, we have
(8 × 3)(1/10 × 1/10)
Evaluate the product of 8 and 3
So, we have
(8 × 3)(1/10 × 1/10) = (24)(1/10 × 1/10)
Evaluate the product of 1/10 and 1/10
So, we have
(8 × 3)(1/10 × 1/10) = (24)(1/100)
Express 1/100 as a decimal
So, we have
(8 × 3)(1/10 × 1/10) = (24)(0.01)
Remove the brackets
So, we have
(8 × 3)(1/10 × 1/10) = 24 x 0.01
This implies that
Evaluate the product of 24 and 0.01
So, we have
(8 × 3)(1/10 × 1/10) = 0.24
Hence, the decimal that is equivalent to (8 × 3)(1/10 × 1/10) is 0.24
Read more about decimal at
https://brainly.com/question/16614695
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please answer I'll give 5 stars
Answer: The answer is 31 Miles
Your welcome!
help asap due in 10 mins
Answer:
x=[tex]\frac{5}{2}[/tex]
Step-by-step explanation:
cross multiply
8x=20
divide both sides by 8
x=[tex]\frac{5}{2}[/tex]
Answer:
Step-by-step explanation:
Multiply both sides by 20
x = 20 * 1/8
x = 2 4/8
x = 2.5
