Answer:
[−7,−5)∩[−5,0] = [-5]
Step-by-step explanation:
A = A1 ∩ A2 means that A contains the intersected elements (shared elements) of A1 and A2
What is the chemical formula for silver sulfate
Answer:
chemical formula for silver sulfate Ag2SO4
Answer:
Ag2SO4
Step-by-step explanation:
..............
F/5 = -8. F=? please solve! I'm stuck!
Answer:
-40
Step-by-step explanation:
F/5 = -8 ⇒ multiply both sides by 5F = - 8*5F = -40 ⇒ answerHELP ASAP ROCKY!!! will get branliest.
Which graph represents the inequality y < 5x+1?
Answer:
See image below
Please help me with these questions
Answer:
Step-by-step explanation: you sjxhbtdtbd
What is the product of -3 1/3 and-8 7/10 ?
Answer:
The answer is 29
Step-by-step explanation:
Answer:
29
Step-by-step explanation:
first make into improper fraction then mulityply and then simplify
Question 8 Find the unit vector in the direction of (2,-3). Write your answer in component form. Do not approximate any numbers in your answer.
Answer:
The unit vector in component form is [tex]\hat{u} = \left(\frac{2}{\sqrt{13} },-\frac{3}{\sqrt{13}} \right)[/tex] or [tex]\hat{u} = \frac{2}{\sqrt{13}}\,i-\frac{3}{13}\,j[/tex].
Step-by-step explanation:
Let be [tex]\vec u = (2,-3)[/tex], its unit vector is determined by following expression:
[tex]\hat {u} = \frac{\vec u}{\|\vec u \|}[/tex]
Where [tex]\|\vec u \|[/tex] is the norm of [tex]\vec u[/tex], which is found by Pythagorean Theorem:
[tex]\|\vec u\|=\sqrt{2^{2}+(-3)^{2}}[/tex]
[tex]\|\vec u\| = \sqrt{13}[/tex]
Then, the unit vector is:
[tex]\hat{u} = \frac{1}{\sqrt{13}} \cdot (2,-3)[/tex]
[tex]\hat{u} = \left(\frac{2}{\sqrt{13} },-\frac{3}{\sqrt{13}} \right)[/tex]
The unit vector in component form is [tex]\hat{u} = \left(\frac{2}{\sqrt{13} },-\frac{3}{\sqrt{13}} \right)[/tex] or [tex]\hat{u} = \frac{2}{\sqrt{13}}\,i-\frac{3}{13}\,j[/tex].
How many ones are in 600
There are 0 ones in the number 600 after writing the number in the form of 600 + 00 + 0
What is the number?A number is a mathematical entity that can be used to count, measure, or name things. For example, 1, 2, 56, etc. are the numbers.
We have a number:
= 600
We can write it as:
600 = 600 + 00 + 0
Number hundreds tens ones
There are 0 ones in the number 600.
Thus, there are 0 ones in the number 600 after writing the number in the form of 600 + 00 + 0
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Can you please help me answer this question what's a+3
Answer:
a+3
Step-by-step explanation:
You cannot go any further in answering this question. These two terms are not like terms so they cannot be combined. Therefore, the answer is just a+3 itself.
Write 9.12 as a repeating decimal into a mixed number in its simplest form
Answer:
9 4/33.
Step-by-step explanation:
0.12 repeating = 12/99
= 4/33.
pleaseeee help me with this!!
it’s more than one answer choice
Answer:
2nd option= 0.5608
3rd option=0.5608
6th option=0.5608
7th option=0.5608
What is the reflection in the x-axis & what’s the reflection in line y=x?
Answer:
a) (3, -4), (2, 4), (-5, -6)
b) (4, 3), (-4, 2), (6, -5)
Step-by-step explanation:
a) Reflection in the x-axis negates the y-coordinate:
(x, y) ⇒ (x, -y)
(3, 4) ⇒ (3, -4)
(2, -4) ⇒ (2, 4)
(-5, 6) ⇒ (-5, -6)
__
b) Reflection in the line y=x swaps the x- and y-coordinates:
(x, y) ⇒ (y, x)
(3, 4) ⇒ (4, 3)
(2, -4) ⇒ (-4, 2)
(-5, 6) ⇒ (6, -5)
Find the slope on the graph
(1 point) Two six-sided dice are rolled (one red one and one green one). Some possibilities are (Red
Complete question:
Two six-sided dice are rolled (one red one and one green one). Some possibilities are (Red= 1, Green=5) or (Red=2, Green=2) etc.
a)How many total possibilities are there?
For the rest of the questions, we will assume that the dice are fair and that all the possibilities in (a) are equally likely.
b)What is the probability that the sum on the two dice comes out to be 11?
c)What is the probability that the sum on the two dice comes out to be 7?
d)What is the probability that the numbers on the two dice are equal?
Answer:
Kindly check explanation
Step-by-step explanation:
Total probabilities :
Total possible outcomes on each dice = 6
Total probabilities = 6² = 36
b)What is the probability that the sum on the two dice comes out to be 11?
Total required outcome = 2
Total possible outcomes = 36
Probability = required outcome / Total possible outcomes
P(sum on both dice = 11) = 2 / 36 = 1/18
c)What is the probability that the sum on the two dice comes out to be 7?
Required outcome = 6
Possible outcomes = 36
P(obtaining a sum of 7) = 6/36 = 1/6
d)What is the probability that the numbers on the two dice are equal
= required outcome / possible outcomes
Required outcome = 1,1 ; 2,2; 3,3; 4,4 ; 5,5 ; 6,6
= 6/36 = 1/6
m∠1 = _° A.30 B.50 C.65
Answer:
0.5(100-30) = 35
That's why M∠1 = 35°
Hoped this helped
find the variable
1) 3x +25= 2x
the perimeter of rectangular garden is 64 centimeters .the length of garden is three times the width .find the lenght
Answer:
length= 24cm
Step-by-step explanation:
interpreting the question
L=3w
perimeter=2(l+w)
64=2(3w+w)
64=2(4w)
64=8w, Divide both sides by 8
w= 8cm
since w= 8
L=3w
L=3×8
L=24cm
select all the expressions that give the area of the figure in square units.
the radius of a coin is 20 cm, find its surface area. (12.57 cm)
Answer:
Step-by-step explanation:
assume the coin is circular.
i think radius=2.0 cm
∵ 20 cm is too big for a coin.
i have calculated the area of both the surfaces.
area =2×πr²=2×π×2.0²=8 π=8×3.14=25.12 cm²
if only one surface then area=π×2²=4π≈12.57 cm²
What is the measure of angle C?
Answer:
<c=152°
Step-by-step explanation:
We know that A and B are equal because it's an isosceles triangle.
x-14=x/2
2(x-14)=x
2x-28=x
x=28
<A=x-14=28-14=14
<B=x/2=28/2=14
<C=180-14-14=152°
When you're standing in a pool in the summertime, and your leg looks shorter under the water than in air, this is an example of light O refraction O reflection O resonance. absorption.
Answer:
refraction
Step-by-step explanation:
from the pf quiz
Answer:
refraction
Step-by-step explanation:
What is the opposite of 1/4
Answer:
opposite number of 1/4=-1/4The opposite of the number 1/4 is equal to -1/4.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that the number is 1/4 and the opposite of the number will be calculated as,
The opposite will be the negative value of 1/4.
Positive value = 1/4
Negative value = -1/4
Therefore, the opposite of the number 1/4 is equal to -1/4.
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HELP PLEASE!!! Please answer them, you don't have to do all just the one you know!! Please and thank you!!!
SHOW WORK !!! I’ll give you BRAINLIST
5.13 x 1.8
4.124 divided by 0.4
Answer:
5.13*1.8=9.234
4.124/0.4=10.31
Step-by-step explanation:
A drawer of socks contains 5 white socks, 3 gray socks and 8 black socks. Sanjay
attempts to pull a pair of white socks from the drawer in the dark. If he does not
replace the first sock before drawing out the second sock, what is the probability
that Sanjay will pull out a pair of white socks on the first try (2 tries, 2 white
socks)? Write your answer as a fraction OR as a decimal rounded to the nearest
thousandth.
Answer: 1/9
Step-by-step explanation:
First pick and Second pick
[tex]\dfrac{5\ \text{white socks}}{16\ \text{total socks}}\times \dfrac{4\ \text{remaining white socks}}{15\ \text{total remaining socks}}=\dfrac{20}{180}\rightarrow \large\boxed{\dfrac{1}{9}}[/tex]
factorize d² +13d + 22
Answer:
(d+9/2)(d-9/2)
Step-by-step explanation:
Use the formula. x=
[tex] + \sqrt({b { }^{2} } - 4ac) \div (2a) \ \\ - \sqrt({b { }^{2} } - 4ac) \div (2a) [/tex]
where x=d, a =1 , b=13 , c=22.
since,
[tex]ax {}^{2} + bx + c = 0[/tex]
What is 10x6 tens in unit form wrote out??
Answer:10x6=60
60
0 hundreds 60 tenths 0 oned
Step-by-step explanation:
The value of a 4 in the one thousands place is what FRACTION of the value of a 4 in the ten thousands place?
Answer:
1/10 = 0.1
Step-by-step explanation:
The value of a 4 in the one thousands place = 4000
the value of a 4 in the ten thousands
= 40000
In fraction,The value of a 4 in the one thousands place to the value of a 4 in the ten thousands place
= 4000/40000
= 4/40
= 1/10
= 0.1
What happens to the interval as the level of confidence is changed? Explain why this is a logical result.
Answer with explanation:
A x% confidence interval interprets the percentage of certainty that a person can believe that the true population parameter.
It is also represented as Point estimate ± Margin of error
Confidence level is proportional to the Margin of error.
As confidence level increases the error bound increases that makes the confidence interval broader. As confidence level decreases the error bound decreases , making the confidence interval narrower.At a restaurant, two salads, two sandwiches, and one drink cost $23. Three salads, one sandwich, and three drinks cost $24.50. A salad costs twice as much as a drink. How much does each item cost?
Answer:
Salad cost = $4
Sandwiches cost= $6.5
Drinks cist= $2
Step-by-step explanation:
Let salad = x
Sandwiches= y
Drinks= z
2x+2y+z= 23...... equation one
3x+y+3z= 24.5 .... equation two
X= 2z.... equation three
Substituting equation three into equation one and two
2(2z) +2y +z= 23....
3(2z)+y +3z= 24.5....
2y +5z= 23.... equation 4
y + 9z= 24.5...equation 5
Multiplying equation 5 with 2
2y +5z= 23
2y + 18z= 49
Solving simultaneously
13z= 26
Z= 26/13
Z= 2
2y +5z= 23
2y +5(2)= 23
2y= 23-10
2y= 13
Y= 6.5
X= 2z
X=2(2)
X= 4
Salad cost = $4
Sandwiches cost= $6.5
Drinks cist= $2