Answer:
9.17 feet
Step-by-step explanation:
Use the Pythogoras theorem, a^2 + b^2 = c^2
you are give c and b ( because one side is slanted, so c) so rearrange to get
c^2-b^2 = a^2
10^2 - 4^2 = 84
square root 84 to get
9.16515
SAT scores: The College Board reports that in 2009, the mean score on the math SAT was 582 and the population standard deviation was =σ120. A random sample of 20 students who took the test in 2010 had a mean score of 515. Following is a dotplot of the 20 scores. (a) Are the assumptions for a hypothesis test satisfied? Explain. (b) If appropriate, perform a hypothesis test to investigate whether the mean score in 2010 differs from the mean score in 2009. Assume the population standard deviation is =σ120. What can you conclude? Use the =α0.10 level of significance and the critical value method.
Answer:
we can conclude that there is no significant evidence to conclude that the mean score in 2010 differs from the mean score in 2009.
Step-by-step explanation:
H0 : μ = 582
H1 : μ < 582
Test statistic :
T = (xbar - μ) ÷ σ/√n
Xbar = 515 ; n = 20 ; σ = 120
T = (515 - 582) ÷ 120/√20
T = -67 / 26.832815
T = 2.50
Pvalue at t score = 2.50 ; df = 19 is 0.0187
At α = 0.0187
Pvalue > α ; Hence, we fail to reject the Null
Hence, we can conclude that there is no significant evidence to conclude that the mean score in 2010 differs from the mean score in 2009.
Calculate the mass of NaOH in 0.2 moles of NaOH
Answer:
0.2M i.e
Step-by-step explanation:
Jana wants to buy a shirt at the store. The shirt is normally $24, but today it is on sale for 15% off.
How much will she save?
Answer:
She will save $3.60
Step-by-step explanation:
10% of 24= 2.4
5% of 24 = 1.2
2.4 + 1.2= 3.6
This means she is saving $3.60 because 15% of $24 is $3.60! :)
Jana save $3.6 to buy a shirt.
What is mean by Percentage?A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.
Given that;
The shirt is normally $24, but today it is on sale for 15% off.
Now,
Since, The shirt is normally $24, but today it is on sale for 15% off.
Hence, The save money = 15% of 24
= 15/100 × 24
= $3.6
Thus, She save $3.6 on the shirt.
Learn more about the percent visit:
https://brainly.com/question/24877689
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18 a exactement 6 diviseurs
Answer:
18 is divisible by 6
Step-by-step explanation:
Because 6 can divide 18, 3 times
Vrai
Please help I'll mark you as brainiest
Answer: A is the answer good luck :)
please help meeeee i will give brainlyest
Answer:
answer is 63 min
Step-by-step explanation:
math+calculator like and subscribe to yourmom.com31
A cylinder has a radius of 5 m and a height of 11 m. Identify the volume of the cylinder to the nearest tenth.
Answer:
86,405 cm³
Step-by-step explanation:
V = cross-sectional area × height = πr²h = 3.142 × 5² × 1100cm
= 86,405 cm³
Answer:
863.9 m³
Step-by-step explanation:
Cylinder volume is V = πr²h. Here the height, h, is 11 m and the radius, r, is 5 m. Thus we have:
V = π(5 m)²(11 m), or
V = π(275) m³, or approximately 863.9 m³
what is the area of the shaded region? use 3.14 for pi
Answer:
13.8
Step-by-step explanation:
Area of square = πr²
=22/7 × 4²
=50.2
Area of square = l²
=8²
= 64
Area of shape is 64 - 50.2 = 13.8
Answer:
The answer is 13.8
Step-by-step explanation:
Yes
6) Find the probability of rolling a multiple of 1.
Answer:
6/6??
Step-by-step explanation:
1 is a multipe of every number
i am guessing out of one roll
there are six sides
Answer:
there is a 100% probability rolling a multiple of 1.
Step-by-step explanation:
All numbers can be multiled by 1.
PLS HELP DUE SOON!!!
Answer:
its both.
Step-by-step explanation:
RNA and DNA are made up of nucleotide(s).
Answer: Both DNA and RNA
Step-by-step explanation:
whats the answer for this
Answer:
1 should be 90 degrees because if u look at the angle its a right angle
2 its an obtuse angle so those angles are more than 90 degrees but less than 180 so its 150 degrees
Solve 2 1/9^x = 2/81 for x
Answer:
2
Step-by-step explanation:
Do 5 yd 12 yd 13 yd make a right angle?
Pls answer its khan academy I really need it
Answer:
Step-by-step explanation:
Note the f(0) = 9
and f(1) = 15
Since, f(x) = abˣ substituting for x, we get:
9 = f(0) = a . b⁰ = a
⇒ a = 9
Now, f(1) = 15
⇒ 15 = a . b¹
⇒ 15 = 9 . b
⇒ b = 15/19
Therefore,
f (r) = 9. (5/3)
Hence, the answer.
brainiest exchange give me and I will give you 2+2
Answer:
4
Step-by-step explanation:
and sure
Answer:
4
Step-by-step explanation:
I Need help with this
Answer:
it would be choice B
Step-by-step explanation:
the frequencies in the chart are 4,5,9,8, and 4 so you look at which graph's bars go up to those numbers
what is the smallest subset of the number -8,546,999 belong to
Answer:
its 4
Step-by-step explanation:
need help w this thanks
Answer:
a
Step-by-step explanation:
If x=3 and y=7, evaluate the following expression: 100 − 3 ( 3 − 4x )
Answer:
[tex]100 - 3(3 - 4x) \\ = 100 - 3(3 - 4 \times 3) \\ = 100 -27 \\ = 73[/tex]
Answer:
873
Step-by-step explanation:
100 - 3 ( 3- 4x ) 97 ( 3 - 4×3 )97 (3 - 12 ) 97 × 9 873The side lengths of a rectangle are all multiplied by 5. What happens to its perimeter?
Answer:
The perimeter is multiplied by 5.
Step-by-step explanation:
Perimeter of a rectangle:
The perimeter of a rectangle with sides l and w is given by:
[tex]P = 2(l + w)[/tex]
The side lengths of a rectangle are all multiplied by 5.
This means that [tex]l = 5l, w = 5w[/tex]. So
[tex]P_M = 2(5l + 5w) = 2*5(l+w) = 10(l + w)[/tex]
What happens to its perimeter?
The rate is:
[tex]\frac{P_M}{P} = \frac{10(l+w)}{2(l+w)} = 5[/tex]
The perimeter is multiplied by 5.
Tinisha is planning a birthday party. She can buy:
10 balloons, 8 cupcakes, and 8 hats for $50
5 balloons, 9 cupcakes, and 7 hats for $46, or
12 balloons, 7 cupcakes, and 9 hats for $51
Using b for the number of balloons, c for the number of cupcakes, and h for
the number of hats, write a system of equations to represent this situation.
Answer:
b+c+h=50
Step-by-step explanation:
Its the first one because you need to have the same amount of hats as cupcakes cause the hat really stands for people.
If Mike loses $5 per week, how much does he lose in 4 weeks?
Answer:
$ 20Step-by-step explanation:
[tex]1week \: = 5 \\ 4 \: weeks = x \\ \\ x = 20[/tex]
hope this helps you.
Can I have the brainliest please?
Have a nice day!
Which number has the least absolute value?
solve for k. a/b=b/a+1k
Answer:
[tex]\frac{(a+b)(a-b)}{ab}[/tex]
Step-by-step explanation:
[tex]\frac{a}{b}=\frac{b}{a} +k[/tex]
[tex]k=\frac{a}{b}-\frac{b}{a}=\frac{a^2-b^2}{ab}=\frac{(a+b)(a-b)}{ab}[/tex]
Please answer it’s due at 3
Answer:
1134mm
Step-by-step explanation:
Can someone give me a fake band name???
Answer:
loaded diper
Step-by-step explanation:
50 pts please help asap (:
Answer:
d. 8 units
Step-by-step explanation:
If AC = 16 units then the length of CB is 8 units because DB is perpendicular bisector from the centre of circle.
Answer: B
Step-by-step explanation: I took the quiz
Hope this helps
Estimate:
8 3/5 + 8 4/9
Answer:
17
Step-by-step explanation:
You know that 8+8=16, and adding the fractions would result in something close to 17.
Look at the image, help !
Answer:
5/9
10/36 + 10/36 = 20/36 which reduces to 5/9
Step-by-step explanation:
ODD
1,2
1,4
1,6
2,1
4,1
6,1
2,3
3,2
2,5
5,2
10/36
GT 7 (excluding gt 7 and odd)
2,6
3,5
4,6
4,5
5,5
5,6
6,6
6,4
6,5
6,2
10/36
I need so much help help me please UwU
Answer:
Line A: y = 3x + 3
Line B: y = -1/3x + 3
Step-by-step explanation:
Line A points: (0, 3) and (1, 6)
Slope:
m=(y2-y1)/(x2-x1)
m=(6-3)/(1-0)
m= 3
y - y1 = m(x - x1)
y - 3 = 3(x - 0)
y - 3 = 3x
y = 3x + 3
Line B points: (0, 3) and (9, 0)
Slope:
m=(y2-y1)/(x2-x1)
m=(0-3)/(9-0)
m= -1/3
y - y1 = m(x - x1)
y - 3 = -1/3(x - 0)
y - 3 = -1/3x
y = -1/3x + 3