Answer:
12 ft by 15 ft
Step-by-step explanation:
set up a proportion of inches over feet equals inches over feet:
.5/10 = .6/x
cross-multiply to get:
.5x = 6
x = 12
.5/10 = .75/y
cross-multiply to get:
.5y = 7.5
y = 15
what type of angles are <5 and <16
A company wants to compare two washing detergents (Brands A and B) to see which best keeps colors from fading. Twenty new, identical red t-shirts will be used in the trials. Ten t-shirts are washed 15 times with Brand A in warm water. The other 10 t-shirts are washed with Brand B in cold water. The amount of fading is rated on a 0 to 100 scale, and the mean for the t-shirts washed in Brand A is compared to the mean for the others. Is this a good experimental design
Answer:
No, because water temperature is confounded with brand of detergent.
Step-by-step explanation:
There is a very possible chance of allowing a third or confounding variable to have creepwd into the research. The aim was to investigate which of two detergents prevents color from fading. Hence, the test for both detergents should be carried out under the same research condition. However, with adoption of different water temperature for each of detergent A and B, there may be a relationship between fading and water temperature which is not what are trying to investigate. This difference in temperature will thus cause a spurious relationship in our research. Hence, water temperature has been confounded with detergent brand, making this experimental design a bad one.
Four students are painting a wall mural for their school.Each student paints 5/7 square yard of wall space.What is the total area of the wall mural that is being painted
A. 20/28
B. 2 6/7
C. 4 5/7
D. 5 3/5
(NEED IT PLEASE)
pls tell me the answer . I am only having 10 minutes
no links
if we subtract the didgit of a two digit number, we get 4. if we interchange the digits of the number and subtract the new number from the original number we get 44. What is the original number
Answer:
Assume that the two digits are x and y (x is at ones position and y is at tens position)
if we subtract the digit of a two digit number, we get 4.
this means,
x-y=4 ..................... (1)
if we interchange the digits of the number and subtract the new number from the original number we get 44.
this means,
old no. 10y+x
new no. 10x+y
10y+x-(10x+y)=44
10y+x-10x-y=44
9y-9x=44 ........................... (2)
solve the two equations:
id these two equations are solved, we get no solution.
meaning, such a number with these given conditions do not exist
Step-by-step explanation:
PLEASE HELP ME!!! ILL GIVE BRAINLIEST TO RIGHT ANSWER
Answer:
792m^2
Step-by-step explanation:
Seperate your 2 rectangles
Large one is 18*30
Small one (60-18)*6
18*30 = 540m^2
42*6=252m^2
When the solution of x2 − 9x − 6 is expressed as 9 plus or minus the square root of r, all over 2, what is the value of r? x equals negative b plus or minus the square root of b squared minus 4 times a times c, all over 2 times a
Answer:
r = 105
Step-by-step explanation:
Given quadratic equation:
x² − 9x − 6
Quadratic formula is given by:
(-b ± √b² - 4ac) ÷ 2a
For the equation: x² - 9x - 6
a = 1, b = -9 and c = -6
Substitute in the quadratic formula:
(-b ± √b² - 4ac) ÷ 2a
(-(-9) ± √(-9)² - 4(1*-6)) ÷ 2*1
= 9 ± √105 / 2
The solution of x² − 9x − 6 is expressed as 9 plus or minus the square root of r, all over 2
Therefore, the value of r is 105
find the exact value given that sin A= -4/5 with A in quadrant IV, tan B=7/24 with b in quadrant III, ; cos C= -5/13 with c in quadrant II
Answer:
A= 306,87°
B= 196,26°
C= 112,62
Step-by-step explanation:
sinA =-4/5
A = -53,24°
A = 306,87°
tan B = 7/24
B = 16,26°
B = 196,26°
cos C = -5/13
C = 112,62°
The following set of coordinates represents which figure?
(7, 10), (4, 7), (6, 5), (9, 8)
Answer:
yufglufgkhjtshjskjhlesglezgzeghllghjr4aeklbxjhihGHIUYGUYG
Step-by-step explanation:
What is one possible solution to the equation you wrote in #1, in the form (S,H)
O (20,10)
O (5,10)
O (20,20)
0 (0,40)
Find the slope of this line
I pull a block out 50 times, I pull a green block 32 times out of 200 picks how many times will I pull a green block?
Answer:
128 times
Step-by-step explanation:
32 / 50 = 0.64
0.64 * 200 = 128
128 times out of 200
What is the Value of the expression 3 (2x - 4) when x = -3?
Answer:
-30
Step-by-step explanation:
3 (2(-3) - 4)
= 3(-6 - 4)
= 3(-10)
= -30
Answer:
1 Let x=1x=1.
2\times 1\times 4=8
2×1×4=8
2 Simplify 2\times 12×1 to 22.
2\times 4=8
2×4=8
3 Simplify 2\times 42×4 to 88.
8=8
8=8
Step-by-step explanation:
What is the Value of the expression 3 (2x - 4) when x = -3?
2 Divide both sides by 88.
x=1
Help and anyone that helps I’ll kiss you on the lips
Which situation is best modeled by the expression 1/2 x 1/6.
Answer:
I'm gonna go with b p.s: sorry if im wrong
Step-by-step explanation:
The Situation described in option A models best the given expression
The given expression is:
[tex]\frac{1}{2} *\frac{1}{6}[/tex]
What is a fraction?A fraction is part of a whole.
A)Pablo spent 1/2 hour practising the trumpet, he spent 1/6 of that time practising his scales.
This means he spent [tex]\frac{1}{2} *\frac{1}{6}[/tex] hours i.e. [tex]\frac{1}{12}[/tex] hours while practising his scales.
So, option A best models the expression [tex]\frac{1}{2} *\frac{1}{6}[/tex].
B)This option is concerned with [tex]\frac{1}{2} +\frac{1}{6}[/tex]
C)This option is concerned with [tex]\frac{1}{2} /\frac{1}{6}[/tex]
D)This option is concerned with [tex]\frac{1}{2} -\frac{1}{6}[/tex]
Hence, option A best models the expression [tex]\frac{1}{2} *\frac{1}{6}[/tex].
To get more about fractions visit:
https://brainly.com/question/78672
L=4 w=5 h=3
Surf. Area = ?
Answer:
im assuming this is a rectangular prism since no specific shape was provided. the answer is 94 square units. if this is correct plz mark brainliest :)
Step-by-step explanation:
PLEASE HELP I’ll give you a 5 star!!!
Match each expression in the top row with an equivalent expression in the bottom row.
Answer:
maam i cant see the row of numbers lol
Step-by-step explanation:
Is 5.585786438 rational or irrational
From what I have learnt:
The number has an ending so it is rational
Irrational numbers don't end, e.g. π (3.1415926...)
Which equation is equivalent to -4(y-2)=12?
1. -4(y-2)=3
2. -4(y-2)=-3
3. y-2=12
4. y-2=3
5. y-2=-3
Please I’ll mark you brainliest if you answer
Answer:
–4(y–2)=12
y–2=12/–4
y–2=–3
The choose (5)
I WILL GIVE AN EXTRA 50 POINTS TO WHOEVER GETS THESE 2 QUESTIONS RIGHT
A card is drawn from a standard deck of cards. What is the probability
that a spade is drawn, then replaced, and a red card is drawn second?
A card is drawn from a standard deck of cards. What is the probability that a spade is drawn, NOT replaced, and another spade is drawn?
Answer:
See below for answers and explanations
Step-by-step explanation:
Problem 1:
A standard deck of cards contains 52 cards, consisting of 13 spades. If you select only one randomly, the probability of that occurring would be 13/52 or 1/4. Since there are only 26 red cards in a standard deck, then the probability of selecting a red card would be 26/52 or 1/2. Because the two events are independent of each other, their probabilities are multiplied. Therefore, the probability of selecting a spade, and then replacing it in hopes of drawing a red card is (1/2)(1/4) = 1/8.
Problem 2:
We are selecting a spade and then another spade while NOT replacing the first spade (remember that these events are independent of each other also). This means that the total card count will change by picking up the second card. Therefore, the probability of selecting a spade, followed by another spade, is (13/52)(12/51) = 156/2652 = 1/17.
Helpppppppppp /:;.:;(???()((;;
Answer:
721.64
Step-by-step explanation:
32.7*26.3=860.01
13.7*10.1=138.37
860.01-138.37=721.64
721.64 mi^2
Step-by-step explanation:
Area of the large rectangle A2 is
A2 = (32.7 mi)(26.3 mi) = 860.01 mi^2
Area of the small rectangle A1 is
A1 = (10.1 mi)(13.7 mi) = 138.37 mi^2
Therefore, the area of the shaded region is simply the difference between A2 and A1:
Area (shaded) = A2 - A1
= 860.01 mi^2 - 138.37 mi^2
= 721.64 mi^2
help me on this question
Answer:
x = 8
Step-by-step explanation:
It is given that the two polygons are similar, one property of similar polygons is that if one were to multiply each side length by a certain number (referred to as the ratio of similitude), they would get the side length of the corresponding side on the other polygon. To find the ratio one has to divide the side length of one polygon by its corresponding side length in the other polygon.
30 ÷ 25 = 1.2
Set up an equation by multiplying one side length by the ratio of similitude, set it equal to its corresponding side length in the other polygon;
1.2 (35) = 4x + 10
Simplify,
42 = 4x + 10
Inverse operations,
42 = 4x + 10
32 = 4x
8 = x
Answer:
Step-by-step explanation:
Use proportions to solve this and the similarity from smaller side to corresponding larger side:
[tex]\frac{s}{l}:\frac{25}{30}=\frac{35}{4x+10}[/tex] and cross multiply to solve for x:
1050 = 25(4x + 10) and
1050 = 100x + 250 and
800 = 100x so
x = 8
The cost of making hamburger is 10.75 and the selling price is 16. The fixed expenses for the month is 3000. How many hamburger should be sold per month
Answer:
Break-even point in units= 571 hamburgers
Step-by-step explanation:
Giving the following information:
The cost of making a hamburger is 10.75 and the selling price is 16. The fixed expenses for the month are 3000.
To calculate the break-even point in units, we need to use the following formula:
Break-even point in units= fixed costs/ contribution margin per unit
Break-even point in units= 3,000 / (16 - 10.75)
Break-even point in units= 571 hamburgers
Tyler bought snacks for his team's practice. He bought a bag of oranges for $1.94 and a 24-pack of juice bottles. The total cost before tax was $43.22. Write and solve an equation which can be used to determine xx, how much each bottle of juice costs?
A town has a population of 2000 and grows at 4% every year.
What would the exponential function be if you were trying to predict what the
town's population would be after 12 years?
A 2000(04)12
B 2000(0.4)12
C 2000(1.04)12 D 0.04(2000)12
Answer:
[tex] \frac{4}{?100} \times \frac{2000}{1?} = 80 \\ \\ 2000 + 80 = 2080 \\ \\ \\ 2080 \times 12 = 24960[/tex]
please help meeeeeeeee
Answer:
Point D is at 3 this is the only correct point...
Step-by-step explanation:
PLS HELP I WILL GIVE BRAINLIEST
Step-by-step explanation:
[tex]6 {x}^{2} {y}^{3} - 2x + 10 \\ when \: x = 5 \: y = - 3 \\ 6( {5})\: ^{2} ( { - 3})^{3} - 2(5) + 10 \\ 6 (25)( - 27) - 10 + 10 \\ = - 4050[/tex]
Given f(x) = 3 and g(x) = cos(x). What is Limit of left-bracket f (x) minus g (x) right-bracket as x approaches negative pi?
Answer:
C
cos pie= -1
so (3-(-1)=3+1=4
Step-by-step explanation:
I need help bro pleaseeee
Answer
20/7=2 6/7
Step-by-step explanation:
soory no explanation
please show work for both thank you!!
Answer:
a. x = 4.8989794855663561963945681494118 or 4.9 rounded
b. x = 8.6023252670426267717294735350497 or 8.6 rounded
Step-by-step explanation:
7² - 5² = x²
49 - 25 = x
49 - 25 = 24
√24 = 4.8989794855663561963945681494118
7² + 5² = x²
49 + 25 = x
49 + 25 = 74
√74 = 8.6023252670426267717294735350497
pls help i need to solve for X and m b
Answer:
x=12. B=52
Step-by-step explanation:
In ∆BCD,
<C=45
<D=7x-1
<B=3x+16[as this diagram is a parellelogram so DE II BC so <CBD=<BDE=3x+16 bcz alternate interior angle]
interior angle of triangle=180 degree
<B+<C+<D=180
3x+16 + 45 + 7x-1 = 180
10x + 60=180
10x =180-60
x=120/10
x=12 degree
m<B =3x+16
=3(12)+16
=36+16
m<B = 52 degree
MARK ME BRAINLIEST THANKS MY ANSWER PLEASE IT TOOK TOO MUCH TIME