Answer:
3.15
Step-by-step explanation:
10.08 / 3.2 = 3.15
Sarah drove 116 miles in 4 hours. If she drove at a constant rate, how far did she travel each hour?
Answer:
28 because 116÷4=29 so she traveled 28 miles per hour
Answer:
Sarah drove 29 miles per hour.
Step-by-step explanation:
116 divided by 4 is 29.
A pyramid is 24 feet tall a scaled model has a height of 2 ft and is 1 foot wide at the base. Identify the scale factor that was used to create the model.
Multiple Choice Answers:
1/12
1/24
12
24
Answer:
1/12
Step-by-step explanation:
Given the following :
Actual height of pyramid = 24 ft
Dimension of scaled model :
Height = 2ft ; width = 1ft
a scale factor is a number used to reproduce a reduced dimension of a model by multiplying the actual dimeznsion or size of the model or object.
Since the height is of the scaled model is less than the actual height of the pyramid ; then it could be said that the scale factor is a fraction, because reduction has occurred.
(Height of scaled model / height of actual pyramid)
(2ft / 24ft) = 1/12
ILL GIVE BRAINLEST:))
Answer:
2 and 3
Step-by-step explanation:
2) If two polygons are similar, the ratio of their areas is equal to the square of the ratio of their corresponding sides.
side ratio: 1/4------- area ratio: 1²/4² = 1/16 = 1:16 ratio
3)If two polygons are similar, then the ratio of their perimeters is equal to the ratios of their corresponding side lengths.
The ratio of the perimeters is the same as the scale factor.
scale 1:4
A chemist has three different acid solutions. The first acid solution contains 25 % acid, the second contains 45 % and the third contains 90 %. He wants to use all three solutions to obtain a mixture of 50 liters containing 70 % acid, using 2 times as much of the 90 % solution as the 45 % solution. How many liters of each solution should be used?
the chemist should use:
Answer:
Wyzant
ALGEBRA WORD PROBLEM
Dorian S. asked • 06/28/17
THREE LINEAR EQUATIONS WITH THREE VARIABLES
A chemist has three different acid solutions. The first acid solution contains 15% acid, the second contains 25%,
and the third contains 70%. He wants to use all three solutions to obtain a mixture of 40 liters containing 45%
acid, using 2 times as much of the 70% solution as the 25% solution. How many liters of each solution should be used?
How to set up as three linear equations to find the answer?
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Arthur D. answered • 06/28/17
TUTOR 4.9 (67)
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set up 2 equations
the first equation...
15%*x+25%*y+70%*2y=45%*40
0.15x+0.25y+1.4y=0.45*40
0.15x+1.65y=18
multiply all terms by 100
15x+165y=1800
divide all terms by 15
x+11y=120
the second equation...
x+y+2y=40
x+3y=40
x=40-3y
substitute into the first equation x+11y=120
40-3y+11y=120
40+8y=120
8y=120-40
8y=80
y=80/8
y=10 liters
x+3*10=40
x+30=40
x=40-30
x=10 liters
10 liters of 15%, 10 liters of 25%, and 20 liters of 70%
check:
10*15%=1.5
10*25%=2.5
20*70%=14
1.5+2.5+14=18
18/40=9/20=45/100=45%
45%*40=18
hope it helps
please mark brainliest
What is the arc measure of major arc ADE in degrees?
Bethany is 57 inches tall Bethany brother Scott is 2 inches taller than she is what is scoot height in feet
Answer:
5'9 ft
Step-by-step explanation:
He was built different
[tex]tan20+4sin20=\sqrt{3}[/tex]
tan( 20 ) + 4 Sin( 20 ) =
( Sin( 20 ) / Cos( 20 ) ) + 4 Sin( 20 ) =
Sin( 20 ) + 4 Sin( 20 ).Cos( 20 ) / Cos( 20 ) =
Sin( 20 ) + 2 × 2 Sin(20).Cos(20)/ Cos(20) =
Sin( 20 ) + 2 × Sin( 40 ) / Cos( 20 ) =
Sin( 20 ) + 2Sin( 40 ) / Cos( 20 ) =
Sin( 20 ) + 2Cos( 50 ) / Cos ( 20 ) =
Sin( 20 ) + 2Cos( 20 + 30 ) / Cos( 20 ) =
________________________________
2 × Cos( 30 + 20 ) =
2 × [ Cos(30).Cos(20) - Sin(30).Sin(20) ] =
2 × [ √3/2 × Cos(20) - 1/2 × Sin(20) ] =
√3 Cos(20) - Sin(20)
_________________________________
Sin( 20 ) + 2Cos ( 20 + 30 ) / Cos( 20 ) =
Sin( 20 ) + √3 Cos(20) - Sin(20) / Cos(20) =
Sin(20) - Sin(20) + √3 Cos(20) / Cos(20) =
0 + √3 Cos(20) / Cos(20) =
√3 Cos(20) / Cos(20) =
Cos(20) simplifies from the numerator and denominator of fraction
√3 × 1 / 1 =
√3
And we're done ....
Subtract 5 from square of b
Answer:
b²-5
.................
Work out the value of x
Step-by-step explanation:
X+3X+90=360
4X+90=360
4X=360-90
4X=270
270÷4=67.5
X=67.5 degrees
please help!!! im really confused abt this
The picture demonstrates the greenhouse effect because all the grass within the rectangle is green. This is due to the fact that it received the nutrients it required. Carbon dioxide molecules provide the initial greenhouse heating needed to maintain water vapor concentrations. When carbon dioxide concentrations drop, Earth cools, some water vapor falls out of the atmosphere, and the greenhouse warming caused by water vapor drops.
Coach Hutchison is the basketball coach at school . she asks players to record their heights. The histogram shows the data she has collected
What unit of measure is used in the Study?
__________________________________
O A. Inches
O B. Feet
O C. Number of playerd
O D. Number of observations
Answer:
The unit of measure used in the study is "inches"
Q3)
Find the Correlation of the following two variables
X: 2, 3, 5, 6
Y: 1, 2, 4, 5
Find the area of the polygon. 26ft. 16ft. 6ft. 2ft. 4ft.
Answer:
296 ft²
Step-by-step explanation: 5 18 7 20
There are a few ways to calculate the area of the tihis composit figure.
The one way is to calculate the entire area of the big rectangle with the voided area and substract the smaller voided rectangle
Big rectangle with voided area
26 × 16 = 26 × 10 + 26 × 6 = 260 + 156 = 416
Small Void Rectangle = 6 × (26 - 2 - 4)
= 6 × 20
= 120
Total area = Big rectangle with voided area - Small Void Rectangle
= 416 - 120
= 296 ft²
another way is to add up three areas
large filled rectangle + smaller filled rectangle + smallest filled rectangle
10 × 26 + 4 × 6 + 2 × 6
260 + 24 + 12
296 ft²
* Will Mark BRAINLIEST * fast plss!! *easy*
I think it might be B or D.
(Pre-Algebra)
(08.02)How many solutions are there for the system of equations shown on the graph?
A) No solution
B) One solution
C) Two solutions
D) Infinitely many solutions
Answer:
One Solution (C)
Step-by-step explanation:
This is one solution because they only intersect once. No solution=no intersect 2 solution=intersect twice infinite solutions= same line
I need help will give out Brainlyest
Answer:
[tex] \frac{6}{6 - 2} = \frac{6}{4} = \frac{3}{2} [/tex]
Answer:
[tex] \rm \rightharpoonup \: f(x) = \frac{x}{x - 2} \\ \rm \rightharpoonup \: f(6) = \frac{6}{6 - 2} \\ \rm \rightharpoonup \: \frac{6}{4} \\ \rm \rightharpoonup \: \frac{3}{2} [/tex]
Hence option A is correctYou are given a line with a slope of -4. What would the slope of a parallel line be?
If a patient smokes 2 packs of cigarettes per day for 20 years how many pack are smoke per year?
Answer:
730
Step-by-step explanation:
2x365=730
6)
Write an equation in slope-intercept form of the line perpendicular to y =
that passes through the point (3, 4).
I need help plz help
Answer
its C my dear
Step-by-step explanation:
Find the volume of each figure. Round your answer to the nearest tenth, if necessary
Answer:
V = 168 km³
Step-by-step explanation:
We are given a triangle prism.
Volume of a triangle prism = ½*a*c*h
Where,
a = 8 km
c = 6 km
h = 7 km
Substitute
V = ½*8*6*7
V = 4*6*7
V = 168 km³
Which statement correctly explains whether Limit of h (x) as x approaches 9 exists?
Answer:
The answer is A
Step-by-step explanation:
"The limit does not exist because the values of h(x) seem to oscillate between random values around x = 9" is correct edg 2021
The correct statement is "The limit does not exist because the values of h(x) seem to oscillate between random values around x = 9".
What is a one-sided limit for function of a single variable?In rough terminologies, the limit from one side is when we only use one side of the function with respect to the considered point of interest (in input) to predict the value of the function at that point.
For a limit of a function f(x) to exist at a point a,
[tex]\lim_{x \to a^-} f(x) = \lim_{x \to a^+} f(x)[/tex]
That is, it has to approach (a) from both sides toward the same value, thus it cannot be oscillating.
From the table, looking at the value of slightly less than 9,
[tex]\lim_{x \to 9^-} f(x)= 4.73[/tex]
Looking at the value of slightly more than 9,
[tex]\lim_{x \to 9^+} f(x) = -4.73[/tex]
Since the lateral limits are different, the limit does not exist.
The correct statement is "The limit does not exist because the values of h(x) seem to oscillate between random values around x = 9".
Learn more about limits;
brainly.com/question/23630768
#SPJ2
A rug has an area of 33 ft squared what is the closest to the length of each side?
A.5 1/4
B. 5 3/4
C.8 1/4
The answer sheet says b but I keep getting C and I don’t know why
Answer:
The is is 8.25 or 8 1/4.
Step-by-step explanation:
Just divide 33 by 4 to get your answer.
(-4)x(-6) what is the answer
Answer:
24
Step-by-step explanation:
( - 4 ) x ( - 6 ) = 24
24 is the answer.
The point D(-3, -6) is translated 2 units left and 3 units up. What are the coordinates of the resulting point, D′?
Answer:
Point D: (-5,-3)
Step-by-step explanation:
trading r turtle I’m trying to get rid of it
The scatterplot shows because the values of y as the values of x increase.
Answer: The scatterplot shows a positive correlation because the values of y increase as the values of x increase.
Which of the following is the best approximation of the correlation coefficient for the data displayed in the scatterplot? 0.5
Answer:
The scatterplot shows a positive correlation because the values of y increase as the values of x increase.
Which of the following is the best approximation of the correlation coefficient for the data displayed in the scatterplot? 0.5
Step-by-step explanation:
I hope that helps!!!!!!!!!!
Can someone please help me on this table?
Answer:
Step-by-step explanation:
Given expression which gives the distance is 16t².
Here, t = time or duration
For t = 20 seconds,
16t² = 16(20)²
= 6400 feet
For t = 21 seconds,
16t² = 16(21)²
= 7056 feet
For t = 22 seconds,
16t² = 16(22)²
= 7744 feet
For t = 23 seconds,
16t² = 16(23)²
= 8464 feet
Therefore, complete table will be,
t 20 21 22 23
h 6400 7056 7744 8464
In the telemarketing industry, one successful sale in one hundred calls is considered success. That is, the probability of success is 1/100 and the probability of failure is 99/100 What is the probability of making 2 sales in 100 calls? Use your calculator.
Answer:
0.1849 = 18.49% probability of making 2 sales in 100 calls
Step-by-step explanation:
For each call, there are only two possible outcomes. Either it is a success, or it is not. The probability of a call being a success is independent of any other call. This means that we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
And p is the probability of X happening.
Probability of success is 1/100
This means that [tex]p = \frac{1}{100} = 0.01[/tex]
What is the probability of making 2 sales in 100 calls?
This is P(X = 2). So
[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]
[tex]P(X = 2) = C_{100,2}.(0.01)^{2}.(0.99)^{98} = 0.1849[/tex]
0.1849 = 18.49% probability of making 2 sales in 100 calls
What is the volume of this sphere?
Use a 3.14 and round your answer to the nearest hundredth.
1 ft
cubic feet
Answer:
Solution given
r=1ft
π=3.14
now
Volume of sphere=⁴/3 πr³=⁴/3×3.14×1³=4.186ft³
=4ft³
Write down two factors of 18
Answer:
1, 2, 3, 6, 9, 18
Step-by-step explanation: