Answer:
She used 4 test tubes for the last experiment
Step-by-step explanation:
Total test tubes needed = 14
Experiment 1 = 2 test tubes
Total test tubes remaining = total - used
= 14 - 2
= 12 test tubes
Remaining experiment = 4 - 1
= 3
Test tubes used for the remaining experiment = test tubes remaining / Experiment remaining
= 12 / 3
= 4 test tubes
How many test tubes did she use for the last experiment?
She used 4 test tubes for the last experiment
Write a different ratio that is equivalent to 3/5.
Answer:
6/10
Step-by-step explanation:
because 6dived by 2 =3
And 10divided by 2=5
So they’re equivalent
Answer:6/10
Step-by-step explanation: we all know you just cheeting in imagine math take ur awnsers and go have a good day
Find the measure of angle m
4. The measure of angle m is 110°
- since the two angles are vertical, they are congruent.
:)
Help plsssssssssssss
Answer:
A. Both factors are positve, so the will be positive.
Answer:
A: because a positive with another positive will be a positive :)
Step-by-step explanation:
A wedding tent is built in the shape of a right rectangular prism topped with a
rectangular pyramid. The dimensions of the prism are 21 ft by 27 ft by 8 ft,
and the height of the pyramid is 2 ft. Find the total volume of the tent. Round
your answer to the nearest tenth if necessary.
Based on the calculations, the total volume of this wedding tent is equal to 4,914 [tex]ft^3[/tex]
Given the following data:
Dimensions of prism (LWH) = 21 ft x 27 ft x 8 ft.Height of pyramid = 2 ft.How to calculate the total volume of the tent.First of all, we would determine the volume of the right rectangular prism by using this formula:
[tex]V=LWH\\\\V=21 \times 27 \times 8\\\\V=4536\;ft^3[/tex]
Also, we would determine the volume of the pyramid by using this formula:
[tex]V=\frac{1}{3} BH\\\\V=\frac{1}{3}\times (21\times 27)\times 2\\\\V=378\;ft^3[/tex]
For the total volume:
Total volume = [tex]4536+378[/tex]
Total volume = 4,914 [tex]ft^3[/tex]
Read more on rectangular prism here: brainly.com/question/3867601
A toy store received a large shipment of toy race cars. The cars come in blue and red. Because the red cars are more popular, the toy store wanted the ratio of red cars to blue cars to be 3:2. If total number of cars received was 40, then how many of the cars were red?
Answer:
24 cars
Step-by-step explanation:
Given
[tex]Red:Blue = 3:2[/tex]
[tex]Cars = 40[/tex]
Required
Determine the number of red cars
Number of red cars is calculated using:
[tex]Red\ Cars = \frac{Red\ Ratio}{Total\ Ratio} * Cars[/tex]
[tex]Red\ Cars = \frac{3}{3 + 2} * 40[/tex]
[tex]Red\ Cars = \frac{3}{5} * 40[/tex]
[tex]Red\ Cars = \frac{3 * 40}{5}[/tex]
[tex]Red\ Cars = \frac{120}{5}[/tex]
[tex]Red\ Cars = 24[/tex]
A regional transportation authority is interested in estimating the mean number of minutes working adults in the region spend commuting to work on a typical day. A random sample of working adults will be selected from each of three strata: urban, suburban, and rural. Selected individuals will be asked the number of minutes they spend commuting to work on a typical day. Why is stratification used in this situation?
A. To remove bias when estimating the proportion of working adults living in urban, suburban, and rural areas.B. To remove bias when estimating mean commuting time.C. To reduce bias when estimating mean commuting time.D. To decrease the variability in estimates of the proportion of working adults living in urban, suburban, and rural areas.E. To decrease the variability in estimates of the mean commuting time.
Answer:
To reduce bias when estimating mean commuting time
Step-by-step explanation:
Given that the selection of adults is based on the three strata found in the region; urban, suburban, and rural areas where the population and proportion of adults commuting to work is progressively decreasing, using a uniform number or sample size will not increase sample error as there are more commuters in the urban areas than in the suburban or rural areas, likewise, there are more commuters in the suburban area than in the rural areas, and as such the proportion of those sampled in the urban areas should be more than those surveyed in the suburban while those surveyed in the suburban areas should be more than those surveyed in the rural areas to reduce bias when estimating the mean as there will be more general representation.
HELPPPPPPP PLEASE ITS TIMED
find √100 please i need help
Answer:
10
Step-by-step explanation:
as you want to find the square root of 100, by using a calculator you will find out that it is 10, also in other way you can check whether it is true by multiply 10 with 10, which you will get 100. in other way, square root of 100 means what value times with what value will get 100
Hey there!
First of all, what is this "√" sign?
It means "square root"
Wow, numbers have square roots? Yes.
The square root of a number is the opposite of squaring a number.
Squaring a number simply means multiplying it times itself.
So taking the square root of a number is the opposite of squaring a number.
So, we have
[tex]\bold{\sqrt{100} }[/tex]
What is the square root of 100? in other words, what number times itself equals 100?
That's right, 10.
Hence, the answer is:
[tex]\boxed{\boxed{\bold{10}}}[/tex]
Hope everything is clear.
Let me know if you have any other questions; if you do, please comment.
#LearningDoesn'tEnd
[tex]\rule{200}{2}[/tex]
Look at balance scale. If one
balance the scale?
is equivalent to two
what should be added to sides
1)
Side x
Side y
A) One can
B) One ball and one can
C) One ball
D) Two cans and one ball
Answer:
C-One ball
Step-by-step explanation:
Side x- 4
Side Y- 6
Ball equals 2
4+2=6
6=6
A circle has the equation x² + y2 = 7
P is the point (-2,13) on the circle x² + y2 = 7
Work out the equation of the tangent to the circle at P.
Answer:
A tangent to a circle at point P with coordinates is a straight line that touches the circle at P. The tangent is perpendicular to the radius which joins the centre of the circle to the point P. As the tangent is a straight line, the equation of the tangent will be of the form y = m x + c .
Step-by-step explanation:
Answer:
x=√−y2+7 or x=−√−y2+7
Step-by-step explanation:
How many solutions does the equation 4x 8 = −2 − 2 5x have? two one none infinitely many
The equation 4x+8 = -2-2+5x has only one solution x=12.
Given equation is:
4x+8 = -2-2+5x
What is an equation?An equation is an operator (denoted by =) that equates the two expressions.
On bringing variables to the left side and constants on the right side
4x-5x = -2-2-8
-x = -12
x =12
Therefore, the equation 4x+8 = -2-2+5x has only one solution x=12.
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Find the approximate unknown angle o using inverse trigonometric ratios (sin-1,cos-1, or tan-1)
Answer:
[tex]\displaystyle 0,1922986515...\pi = \theta \\ 35° \approx \theta[/tex]
Step-by-step explanation:
[tex]\displaystyle sec^{-1}\:1\frac{177}{823} = \theta; 0,1922986515...\pi\:[or\:34,613757274...°] \\ \\ \boxed{0,1922986515...\pi = \theta\:[35° \approx \theta]}[/tex]
OR
[tex]\displaystyle cos^{-1}\:\frac{823}{1000} = \theta; 0,1922986515...\pi\:[or\:34,613757274...°] \\ \\ \boxed{0,1922986515...\pi = \theta\:[35° \approx \theta]}[/tex]
I am joyous to assist you at any time.
What is 11/12 minus 1/4?
Answer:
0.6 repeating, or 0.66666666666667
Step-by-step explanation:
remember to find common denominators!
Answer:
2/3
Step-by-step explanation:
To subtract fractions we need a common denominator.
Let's make 1/4 have the same denominator as 11/12.
Multiply by 3 so we get 3/12.
Then we can subtract.
11/12-3/12=8/12
We can simplify this to 2/3
Brett is performing a hypothesis test in which the population mean is 310 and the standard deviation is 20. His sample data has a mean of 295 and a sample size of 50. Which of the following correctly depicts the z-statistic for Brett’s data? –5. 30 –0. 11 4. 28 6. 27.
Z-score of given data comes to be -5.30.
It is given that
Population mean μ= 310
Standard deviation σ= 20
Mean of sample data X= 295
Sample size n= 50
What is z-score?A Z-score is a numerical measurement that describes a value's relationship to the mean of a group of values.
For a hypothesis test
Z-score = (X-μ)/(σ/√n)
Where, X = observed value
μ= mean
σ = standard deviation
n =sample size
Z-score of above data = (295-310)/(20/√50)
Z-score = -5.30
Therefore, Z-score of given data comes to be -5.30.
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what is the area of 3ft and 12ft?
Answer:
36 ft
Step-by-step explanation:
3 × 12 = 36 ftI hope this helps!
Simplify the following expression [tex]\sqrt(75)+\sqrt(108)=a\sqrt(b)[/tex] If the expression is simplified completely, what does a equal and what does b equal
Answer:
the answer I got is:
a= 11√3b/b
b= 363/a^2
MATH HW URGENT!!!
Whoever solves one question at least will be brainliest!!!!
Answer: Equation of the line from D to C is y=2x+6?
Step-by-step explanation: Lines A to B and D to C looks parallel meaning they have the same slope but different Y intercept?
giving brainlist for correct answer. :))
Answer:
Here is the steps. 67.5 cm^3
Step-by-step explanation:
4.5 * 6 = 27
27 * 2.5 = 67.5
Answer:
67.5 cm
Step-by-step explanation:
[tex]4\frac{1}{2}[/tex] × [tex]6[/tex] ×[tex]2\frac{1}{2}[/tex] = [tex]67\frac{1}{2}[/tex] or [tex]67.5[/tex]
If x+y=8 , 1/x+1/y=1/2 then xy=?
Answer:
xy = 16
Step-by-step explanation:
[tex]\frac{1}{x}[/tex] + [tex]\frac{1}{y}[/tex] = [tex]\frac{1}{2}[/tex] ( multiply through by 2xy to clear the fractions )
2y + 2x = xy ← factor out 2 from each term on the left side
2(y + x) = xy
substitute x + y = 8 into the left side
2(8) = xy , that is
xy = 16
find the length of the third side. if necessary, write in simplest radical form.
Answer:
10
Step-by-step explanation:
Let x represent the third side
This is a right triangle
In right triangle the sum of square value of both legs is equal to square value of hypotenuse(the third side in this case)
Let x represent the third side
5^2 + 5[tex]\sqrt{3}[/tex]^2 = x^2
25 + 75 = x^2
100 = x^2 find the root for both sides
10 = x
AngleFBC and AngleCBG are supplements, AngleDBG and AngleDBF are supplements, and AngleCBG Is-congruent-to AngleDBF.
4 lines are shown. A horizontal line with points F, B, G intersects a vertical line with points A, B, E at point B and forms a right angle. Another diagonal line with points D, B, C intersects the other 2 lines at point B between angle F B E and angle A B G. A fourth line intersects 3 lines at points A, C, G.
By the congruent supplements theorem, what can you conclude?
AngleCBG Is-congruent-to AngleDBG
AngleFBC Is-congruent-to AngleDBG
AngleCBG is supplementary to AngleDBF.
AngleFBC is supplementary to AngleDBG.
Answer:
FBC=DBG
Step-by-step explanation:
Edge 2020
Based on the congruent supplements theorem which says that two angles are that are supplements of the same angle are congruent, therefore: ∠FBC ≅ ∠DBG.
What is the Congruent Supplements Theorem?The congruent supplements theorem states that when two angles are congruent or supplements of the same angle, therefore, the two angles can be proven to be congruent angles.
Therefore, from the information given, we can conclude based on the congruent supplements theorem that: ∠FBC ≅ ∠DBG.
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what is the 63 term in the sequence 2,12,22,32,....
Please mark brainliest this took a while to make!
Answer:
622
Counting the terms already shown, we would need 59 more. Since each term adds ten, let's make each term 10 added to the previous.
2,12,22,32,42,52,62,72,82,92,102,112,122,132,142,152,162,172,182,192,202,212,222,232,242,252,262,272,282,292,302,312,322,332,342,352,362,372,382, 392,402,412,422,432,442,452,462,472,482,492,502,512,522,532,542,552, 562,572,582,592,602,612,622
The following triangles are similar. True or False.
Answer:
It would be true
If necessary, round your answer to the nearest tenth,
Check the picture below.
What common fraction must be taken from 5/6 to equal 1/3
Answer:
1/2
Step-by-step explanation:
[tex] \frac{5}{6} - x = \frac{1}{3} [/tex]
[tex] \frac{5}{6} - x = \frac{2}{6} [/tex]
[tex]x = \frac{3}{6} = \frac{1}{2} [/tex]
2x + 2y = 0 and y = 2x – 3
I
I need help asap
Answer:
x=1 and y=−1
Step-by-step explanation:
Use substitution in order to solve this.
30 meters is the same as how many feet?
Hint: 1m x 3.3 ft
Round your answer to the nearest tenth.
I need this like right now please
Answer:
32
Step-by-step explanation:
You pick a card at random from an ordinary deck of 52 cards. if the card is a diamond, you get some points; if not, you lose 2 points. what value for the diamonds would make the game fair? 12 6 24 3
The value for the diamonds which would make the game of pick a diamond from a deck of 52 cards fair is 6.
What is probability?Probability of an event is the ratio of number of favorable outcome to the total number of outcome of that event.
From a card at random from an ordinary deck of 52 cards is picked.If the card is a diamond, you get some points. There are total 13 diamonds in a deck of cards.
Thus, the probability of picking a diamond from 52 cards is,
[tex]P=\dfrac{13}{52}\\P=\dfrac{1}{4}[/tex]
The probability of not picking a diamond from 52 cards is,
[tex]P'=1-\dfrac{1}{4}\\P'=\dfrac{3}{4}[/tex]
If the picked card is not a diamond, then the 2 points are lost. Let X is the score in the game. If the game is fair then the expected value for this should be 0. Thus,
[tex]0=x\times \dfrac{1}{4}+2\times\dfrac{(-3)}{4}\\x=6[/tex]
Hence, the value for the diamonds which would make the game of pick a diamond from a deck of 52 cards fair is 6.
Learn more about the probability here;
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Answer:
6
Step-by-step explanation:
The answer above is correct.
In calculating the monthly payment for a loan with an 8.5% interest rate compounded monthly, what value should be used for i, the interest rate per period, as it appears in the following formula? p = p v times startfraction i over 1 minus (1 i) superscript negative n endfraction a. 8.5 b. 0.71 c. 0.085 d. 0.0071
The value of i, the interest rate per period(monthly here) that should be used in the considered formula is given by: Option B: 0.71
How to find the monthly payment?If we're given that:
[tex]P_v[/tex] = present value[tex]P[/tex] = monthly payment to be paidi = interest rate per monthn = number of periods.Then, we get:
[tex]P = P_v\left(\dfrac{i}{1-(1+i)^{-n}}\right)[/tex]
For this case, we're provided that:
i = interest rate per period
And we have:
Interest rate compounding monthly = 8.5%
The interest rates are usually given for annual basis. Since i represents the rate per period, which is monthly here, thus, we will convert the rate 8.5% from annually to monthly.
Since 1 year = 12 months,
so 8.5% per year compounding monthly = (8.5/12)% per month compounding monthly
Thus, i = interest per period = interest per month = 8.5/12≈ 0.71 (in percentage)
Thus, the value of i, the interest rate per period(monthly here) that should be used in the considered formula is given by: Option B: 0.71
Learn more about monthly payment here:
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Answer:
Its D :)
Step-by-step explanation:
PLZZ HELP I NEED AN ANESWER QUICK PLSSS
What is the distance between the points(−7, 7) and (−7, 8)?
Answer:
1
hope this helps!! :)