Answer is 25.34
You just have to divide 36.20 by 10 which is 3.62 and then you multiply 7
Topic: Matrix Row Reduction
Write the system as an augmented matrix:
[tex]\left[\begin{array}{cc|c}1&5&22\\4&-7&7\end{array}\right][/tex]
Add -4 (row 1) to row 2 :
[tex]\left[\begin{array}{cc|c}1&5&22\\0&-27&-81\end{array}\right][/tex]
Multiply row 2 by -1/27 :
[tex]\left[\begin{array}{cc|c}1&5&22\\0&1&3\end{array}\right][/tex]
Add -5 (row 2) to row 1 :
[tex]\left[\begin{array}{cc|c}1&0&7\\0&1&3\end{array}\right][/tex]
Then x = 7 and y = 3.
I NEED HELP WITH THIS IVE RETAKEN IT LIKE 4 TIMES PLS HELP
Answer:
(a)=40 (b)=60
Step-by-step explanation:
(a)=
So first 70 +70 = 140 then 180-140 = 40
(b)
So first 180/3 = 60 all angles =60
A delivery company is logging the number of miles each employee drives each day. The company found an average of about 85.6 miles. Assume that the standard deviation is 9.85 miles and that a random sample of 50 drivers was used to determine the average. Which statements are true about this situation?
1.)The 99% confidence interval is from about 81.43 to 90.58 miles.
2.)The 95% confidence interval is from about 82.87 to 88.33 miles.
3.)The margin of error for 95% confidence is about 2.52 miles.
4.)The sample isn’t large enough to use a normal distribution.
5.)The margin of error for 99% confidence is about 3.59 miles.
There are multiple answers
The delivery company's statistics on the average driving miles show that the true statements are:
95% confidence interval ... 82.87 to 88.33 miles.Margin of error 99% confidence ... 3.59 miles.What is the 99% confidence interval?Z score for 99% confidence interval is 2.576 so this can be found as:
= 85.6 ± (2.576 x 9.85) / √50
= (82.01 to 89.19)
What is the 95% confidence interval?Z score for 95% confidence interval is 1.960 so this can be found as:
= 85.6 ± (1.96 x 9.85) / √50
= (82.87 to 88.33)
What is the 95% confidence margin of error?With a Z score of 1.960:
= (1.96 x 9.85) / √50
= 2.70 miles
What is the 99% confidence margin of error?= (2.576 x 9.85) / √50
= 3.59 miles
The correct options are therefore 2 and 5.
Find out more on the margin of error at https://brainly.com/question/10218601.
I cant seem to get it can you help me, please.
Which right circular cylinder has the greater volume
Answer:
the blue cylinder
Step-by-step explanation:
17. A man stands 4300 feet from the Burj Khalifa in
Dubai (world's tallest building). The angle of
elevation from his eyes (5 feet) to the top of the
building is 32°. How tall is the building?
9514 1404 393
Answer:
b. 2692 ft
Step-by-step explanation:
The relation of interest between the sides of the right triangle is ...
Tan = Opposite/Adjacent
Using the given numbers, that is ...
tan(32°) = (building height)/(4300 ft)
Multiplying by 4300 ft, we get ...
building height = (4300 ft)·tan(32°) ≈ 2686.9 ft
This is the height above the observer's eyes, so the height of the building above the ground is ...
2687 +5 = 2692 . . . . feet
The building is 2692 feet tall.
David buys 3 movie tickets for $6 each and 2 bags of popcorn
for $2 each. Simplify the expression 3.6 +2.2 to find out how
much money David spent in all
Answer:
5.8 thats the answer you get when it is simplified and 1 movie ticket=$2 and 1 bag of popcorn= $1
Step-by-step explanation:
What is the length of X?
a = 6.4
b = 12
Which of the following is equivalent to(x2+6x+9)
(x-3)(x+3)
(x+2)(x-7)
(x-6)(x+3)
(x+3)2
Explain how to draw a line segment that measures 72 millimeters.
Answer:
get a ruler and meshure out 72 millimeters.
Step-by-step explanation:
did exam
Can you form a parallelogram by drawing a triangle and then reflecting one or more times? Explain.
Answer:
please give me brainlist and follow
Step-by-step explanation:
No. It is not possible to reflect a triangle in such a way that the result is quadrilateral with any consecutive sides that are congruent.
Which pair of points graphed below have values that are opposites
50 POINTS!! Please please help find height and volume of pyramid!!!
Answer:
44.68.8m³
hope it helps please mark Brainliest
A - 3/4 = 1/8 step by step explanation
Answer:
A-3/4=1/8 is the equation, if you expand 3/4 it is 6/8, in order to get 1/8 you need to subtract 6/8 from 7/8
7/8-6/8=1/8 therefor A=7/8
help plsssssss no links or files
Answer:
i just did that earler lol
Step-by-step explanation:
Q.1 What value of p will make this equation true?
Q.2 what value of x makes this equation true?
Answer:
[tex]1. \: p = 10 \\ 2. \: x = 4[/tex]
can someones please help me i dont get this
Answer:
176.25in^2
Step-by-step explanation:
You can tell that the two triangles on the left, and the two triangles on the right make a rectangle if you flip one of them. Because of this, you can multiply the base and height to get the area of both.
7.5*16=120 (left side)
7.5*7.5=56.25 (right side)
Now we add them to get the full area:
120+56.25=176.25in^2
Una parcela de forma cuadradra mide 1089km2 de superficie cuantos metros mide el lado de la parcela
Respuesta:
3.3 × 10⁴ m
Explicación paso a paso:
Paso 1: Información provista
Superficie de la parcela cuadrada (S): 1089 km²
Paso 2: Determinar la longitud del lado (l) de la parcela
Podemos determinar la superficie de un cuadrado usando la siguiente fórmula.
S = l²
l = √S = √1089 km² = 33 km
Paso 3: Convertir "l" a metros
Vamos a usar el factor de conversión 1 km = 10³ m.
33 km × 10³ m/1 km = 3.3 × 10⁴ m
It takes Jack 11 hours to pick 40 bushels of apples alone. Jill can pick 40 bushels of apples in 9 hours. How long will it take Jack and Jill to pick 40 bushels of apples together. Round to the nearest hour.
Answer:
5 hours
Step-by-step explanation:
Jack 40/11 = 3.64 bushels per hour
Jill 40/9 = 4.44 bushels per hour
together they pick 3.64 + 4.44 = 8.08 bushels per hour
40/8.08 = 4.95 hours
Write an equation in standard form for a line that is perpendicular to the line with an equation of y = 3x —5 that passes through the point (8, 5).
Answer:
x + 3y = 23
Step-by-step explanation:
m = -1/3, find 'b'
5 = -1/3(8) + b
15/3 = -8/3 + b
23/3 = b
y = -1/3x + 23/3
multiply each side by 3 to get:
3y = -x + 23
x + 3y = 23
What is the solution to the equation 1.2m - 0.8 = -2.Om?
m = 0.25
m = 0.4
m = 1
m = 4
Each Serving of pasta is 1/2 pound. Drag to correct equation to each amount to show how many 1/2 pound serving Can be made
Step-by-step explanation:
4 pounds is 4÷1=8
2
5 pounds is 5÷1=10
2
Tbh I got no clue how to do this so help please
Answer:
I'm not entirely sure but I think you have to start by negative -1 and move back 4 spaces?
Step-by-step explanation:
the Red arrows is pointing towards the negative side of the number line
Sam and Dave, who are both Park Rangers, each manage a nature preserve. Devin's nature reserve is 14 hectares and Sam's nature reserve is 14\cdot 10^{6}14⋅10 6 square meters. Who manages the smaller nature preserve? Note: 1 hectare = 10,000 square meters
Answer: Devin's
Step-by-step explanation:
Given
Devin's nature reserve is 14 hectares
Sam's nature reserve is [tex]14\times 10^6\ m^2[/tex]
Also, [tex]1\ \text{hectare}=10,000\ m^2[/tex]
Devin reserve in square meter [tex]14\ \text{hectares}=14\times 10^4\ m^2[/tex]
Clearly, [tex]14\times 10^6> 14\times 10^4[/tex]
So, Devin's manages smaller area
what s
2/3x(23+57)
jeefhjdfblfhlwkejbfhbfkjdsbfwjbf
Answer:
53
Step-by-step explanation:
53.3333333333
Answer:
160 x /3
Step-by-step explanation:
The perimeter ratio of two similar triangular prisms are 13:7. If the surface area of the smaller prism is 52km2 , then calculate the larger surface area.
Answer:
96.5714285714 km^2
Step-by-step explanation:
You have to multiply 52 by 13/7
Answer:
96.5714285714 km^2
hope it helps
The measurement of one angle of a right triangle is 42°.
What is the measurement of the third angle?
56°
42
138
48
Answer:
48
Step-by-step explanation:
42 + 90 + x = 180
x = 48
Please help me I’ll give brainly
Answer:
9 and 10
Step-by-step explanation:
square root of 96 is 9.79795897113
Answer:
9 and 10
Step-by-step explanation:
because square of 9 is 81
and square of 10 is 100
81<96<100
so it lies between 9 and 10
I need this done for a test, and if someone can answer one of my past questions, thank you
Answer: #1 D 60 2# H
Step-by-step explanation:
Difference between 3/5 of Raman's present age and his age 4 years ago is zero. What will be his age after 5 years?
Answer: 15 years
Step-by-step explanation:
Given
Difference between [tex]\frac{3}{5}[/tex] Raman's present age and his age 4 years ago is 0
Suppose Raman's present age is [tex]x[/tex]
So, we can write
[tex]\Rightarrow \dfrac{3x}{5}-(x-4)=0\\\Rightarrow \dfrac{3x-5x}{5}+4=0\\\Rightarrow \dfrac{-2x}{5}+4=0\\\Rightarrow x=\dfrac{20}{2}=10[/tex]
His age after 5 years is [tex]x+5=15\ yr[/tex]