pls pls help me pls
Patricia is testing some mineral properties to help her identify each mineral. For one test, she scrapes a mineral on a special plate to observe the color left behind.
For which of the following properties of minerals is she MOST LIKELY using this test?
Group of answer choices
cleavage
hardness
luster
streak
Keesha is conducting several tests on minerals to help identify them. She uses a small hammer to break the mineral. Which property of the mineral might Keesha be testing?
Group of answer choices
cleavage
texture
luster
streak
Haley tests the streak of two mineral samples using a streak plate. Both minerals leave a pale yellow streak. Which of the following might Haley conclude about the two mineral samples?
Group of answer choices
They both have dull luster.
They are very soft minerals.
They could be the same mineral.
They are both very hard.
The students in Mr. Leone’s class are studying rocks. The students tell Mr. Leone that several of their rocks are sedimentary. Which of the following could the students use as evidence for their thinking?
Group of answer choices
The rocks are grainy.
The rocks contain fossils.
The rocks are heavy.
The rocks have large crystals.
Answer: Hope This Helps!
Step-by-step explanation:
1: Streak: Streak is a word referring to the color of the streak that a rock makes when it is scraped against the unglazed side of a white ceramic tile (or, the unglazed bottom of a white coffee cup or toilet tank cover).
2: Luster: The luster of a mineral is best observed on a surface that is free of moisture, dirt, tarnish, and abrasion. Geologists in the field usually carry a rock hammer to break rocks so that their true luster and color can be observed.
3: They could both be the same mineral: The minerals pyrite and gold are always metallic yellow in color and streak (although they differ in other characteristics such as hardness).
4: The rocks contain fossils: Sedimentary rocks are most likely to contain fossils. Fossils are formed when the bodies or remnants of living organisms (plants and animals) are covered and are thus protected from predators or microbial decay. And thats exactly what a sedimentary rock is.
4. Over what interval is the function shown in the
table decreasing?
Answer:
The derivative of a function may be used to determine whether the function is increasing or decreasing on any intervals in its domain. If f′(x) > 0 at each point in an interval I, then the function is said to be increasing on I. f′(x) < 0 at each point in an interval I, then the function is said to be decreasing on I.
Step-by-step explanation:
What is a DMAS of 111 + 23 - 33 x 11 ÷ 29
Answer:
12.48 to the nearest hundredth.
Step-by-step explanation:
11 + 23 - 33 x 11 / 29
= 111 + 23 - 363 / 29
= 11 + 23 - 12.517
= 34 - 12.517
= 21.483.
ALSO NEED HELP ON THIS ONE, ASAP!! (No links, thats all)
(20!!)
(05.01) Sammy is trying to determine how many triangles she can create out of a square grid that has a side of 12 inches. Use the image below to determine the area of the triangle and how many she can cut out.
A) The area of the triangle is 36 in2, so she can only create 2 triangles
B) The area of the triangle is 72 in2, so she can only create 2 triangles
C) The area of the triangle is 36 in2, so she can only create 4 triangles
D) The area of the triangle is 72 in2, so she can only create 4 triangles
The area of the triangle is 36 in², so she can create only 4 triangles.
The box plot below represents some data set. What percentage of the data values are less than 46?
Answer: 25%
Step-by-step explanation:
Write the following in scientific notation:
1. 5,400,000,000.=
Answer:
5.4x10^9
Step-by-step explanation:
A random sample of 500 women and 500 men who eamed degrees in science and engineering (S&E) were asked if they work
In an S&E occupation. The results of the survey are shown.
S&E Occupations Non-S&E Occupations Total
Women
76
424
500
Men
169
331
500
Total
245
755
1000
A person from the survey is randomly selected. What is the probability of each event below?
Drag tiles to the empty boxes to create your answers.
• The probability that a randomly selected person works in an S&E occupation is
• The probability that a randomly selected person is a woman and works in an S&E occupation is
• The probability that a randomly selected person is a woman or works in an S&E occupation is
76
245
500
669
745
Answer:
0.245 ; 0.76 ; 0.669
Step-by-step explanation:
Occupations S&E Non S &E Total {Gender wise}
Women 76 424 500
Men 169 331 500
Total {occupation wise} 245 755 1000 [Grand Total]
1) Probability (any person in S & E) = Total people in S & E / Total people = 245 / 1000 = 0.245
2) Prob (woman & works in S & E) , ie P (W ⋂ S) = Total women in S & E / Total people = 76 / 100 = 0.76
3) Prob (woman or works in S & E), ie P (W U S) = P( Women) + P (S & E) - Prob (Women & SE), ie P (W) + P (S &E) - P (W ⋂ S) = ( 500 + 245 - 76 ) / 1000 = 669 / 1000 = 0.669
The probability that a randomly selected person works in an S&E occupation is 0.245.
The probability that a randomly selected person is a woman and works in an S&E occupation is 0.12.
The probability that a randomly selected person is a woman or works in an S&E occupation is 0.745
What are the probabilities?
Probability determines the odds that an event would happen.
The probability that a randomly selected person works in an S&E occupation = total number of people that work in SE / total number of people= 245 / 1000 = 0.245.
The probability that a randomly selected person is a woman and works in an S&E occupation = (number of women / total number of people surveyed) x (number of people that work in SE / total number of people surveyed)
500 / 1000 x (245 / 1000) = 0.12
The probability that a randomly selected person is a woman or works in an S&E occupation = (number of women / total number of people surveyed) + (number of people that work in SE / total number of people surveyed)
= 500 / 1000 + (245 / 1000) = 0.745
To learn more about probability, please check: https://brainly.com/question/13234031
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What is the mean for the set of data?
Answer:
the mean is 3
Pls mark Brainliest :)
Step-by-step explanation:
[tex]y 12 \times y8 \div y3[/tex]
Answer:
y^17
Step-by-step explanation:
y^12 x y^8 ÷ y^3 = y^20 ÷ y^3 which equals y^17
4. What is the area of this unknown figure? Show your work.
Answer:
Area of small little rectangle above:
3 x 5 = 15
Let's find the area of the trapezoid now:
5 + 13 = 18
18 x 7( i got 7 from: 10 - 3 = 7) = 126
126 x 1/2 (basically just dividing by 2) = 63
Now let's add all the given areas:
15 + 63 = 78 inches^2 is your answer
Pls help asap i have to turn in in 30 minutes will give brainliest
Natalie is making 1 1/2 the brownie recipe.The recipe calls for 2 1/2 cups of sugar.How many cups of sugar should she use?Pls hurry or i get 0%
Side 1: 3x2 - 2x - 1
Side 2: 9x + 2x2 - 3
The perimeter of the triangle is 5x3 + 4x2 - x - 3.
Part B: What are the degree and classification of the expression obtained in Part A? (2 points)
Answer:
Part A - [tex]l_{1} + l_{2} = 5\cdot x^{2} + 7\cdot x -4[/tex], Part B - Polynomial of second degree and formed by 3 monomials, Part C - [tex]l_{3} = 5\cdot x^{3} -x^{2}-8\cdot x +1[/tex]
Step-by-step explanation:
Part A - The total length of the sides 1 and 2 is equal to the addition between respective polynomials:
[tex]l_{1} + l_{2} = (3\cdot x^{2} - 2\cdot x - 1) + (9\cdot x + 2\cdot x^{2} - 3)[/tex]
[tex]l_{1} + l_{2} = (3\cdot x^{2} + 2\cdot x^{2}) + (9\cdot x - 2\cdot x) +[(-1) + (-3)][/tex]
[tex]l_{1} + l_{2} = 5\cdot x^{2} + 7\cdot x -4[/tex]
Part B - The degree is the highest exponent of the polynomial and the classification is related to the number of monomial that make part of the algebraic expression. In this case, we conclude that resulting expression is a polynomial of second degree and formed by 3 monomials.
Part C - The length of the third side of the triangle by subtracting the expression found in part A from the polynomial of the perimeter of the triangle:
[tex]l_{3} = p - l_{1} - l_{2}[/tex]
[tex]l_{3} = (5\cdot x^{3}+4\cdot x^{2}-x-3) -(5\cdot x^{2}+7\cdot x -4)[/tex]
[tex]l_{3} = 5\cdot x^{3} + [4+(-5)]\cdot x^{2}+[(-1)+(-7)]\cdot x +[(-3)+ 4][/tex]
[tex]l_{3} = 5\cdot x^{3} -x^{2}-8\cdot x +1[/tex]
Answer:
Part A; Total length of side 1 and 2 = 5·x² + 7·x - 4
Part B; The degree of the polynomial is 2
The classification of the polynomial is a trinomial quadratic equation
Part C; 5·x³ - 4·x² - 6·x + 2
Step-by-step explanation:
The length of the sides of the rectangle are;
Side 1: 3·x² - 2·x - 1
Side 2: 9·x + 2·x² - 3
The perimeter of the rectangle is 5·x³ + 4·x² - x - 3
Part A
The given expression for the sides of the rectangle are;
Side 1: 3·x² - 2·x - 1
Side 2: 9·x + 2·x² - 3
The total length of side 1 and side 2 is given by add ing the given expressions as follows;
Total length of side 1 and 2 = 3·x² - 2·x - 1 + 9·x + 2·x² - 3 = 5·x² + 7·x - 4
Part B
The degree of the polynomial is 2 and the classification of the polynomial is a trinomial quadratic equation
Part C
Given that a rectangle rectangle consists of two pairs of equal opposite sides, we have;
The length of the third side = The perimeter - (2 × The length of side 1 + The length of side 2)
The length of the third side = 5·x³ + 4·x² - x - 3 - (2 × (3·x² - 2·x - 1) + 9·x + 2·x² - 3)
The length of the third side = 5·x³ + 4·x² - x - 3 - (8·x² + 5·x - 5)
The length of the third side = 5·x³ - 4·x² - 6·x + 2
Patty's math class starts at 8:00 A.M. and lasts for 1 hour and 45 minutes. After math class, Patty has recess for 15 minutes. What time does Patty's recess end?
Answer:
10 A.M
Step-by-step explanation:
This is the last question from me
Answer:
[tex] {4}^{4} [/tex]Step-by-step explanation:
[tex] \frac{ {4}^{9} }{ {4}^{5} } [/tex][tex]{4}^{9 - 5} [/tex]
[tex] {4}^{4} [/tex]
Hope it is helpful....Which choice is equivalent to the expression below?
Answer:
[tex]\text{A. 8}i[/tex]
Step-by-step explanation:
The math constant [tex]i[/tex] represents [tex]\sqrt{-1}[/tex]. Because [tex]\sqrt{a\cdot b}=\sqrt{a}\cdot\sqrt{b}[/tex], we can rewrite the equation given the problem as [tex]\sqrt{-64}=\sqrt{64}\cdot \sqrt{-1}=\boxed{8i}[/tex].
HELP ME HELP ME HELP ME
Answer:
???
Step-by-step explanation:
Some steps to rewrite the expression x3 − 16x + x2 − 16 as a product of three factors are shown below:
Step 1: x3 − 16x + x2 − 16
Step 2: x3 + x2 − 16x − 16
Step 3: x2(x + 1) − 16(x + 1)
Which of the following best shows the next two steps to rewrite the expression?
Step 4: (x2 + 16)(x + 1); Step 5: (x + 4)(x + 4)(x + 1)
Step 4: (x2 − 16)(x + 1); Step 5: (x + 4)(x + 4)(x + 1)
Step 4: (x2 − 16)(x + 1); Step 5: (x − 4)(x + 4)(x + 1)
Step 4: (x2 + 16)(x + 1); Step 5: (x − 4)(x + 4)(x + 1)
Answer:
third one
Step-by-step explanation:
the third one should be the answer
step 4 came out becoz of taking the common factor(x+1) and combining x2 and (-16)
Step 5 came out becoz of the theory of (a^2-b^2) = (a+b)(a-b)
ps 16 here is equal to 4^2
none. .g,h.fg,hb.fg,hcg,/.c, .v,b mbfg,.b,t;lger,gl;erd
Answer:
⊥H∀∩K y∅∪
Step-by-step explanation:
what is the area for a radius of 8 mm
Answer:
A= 201.06
Step-by-step explanation:
A = pi r^2
A = pi x 8 x r^2 = 201.06
Mr. Lucas built two gardens in his yard with the dimensions shown. 2 ft How much soil, in cubic feet, will Mr. Lucas need to fill both gardens?
Answer:
I think the answer is 150 but im not positive Im sorry if im wrong
Step-by-step explanation:
Answer:
Step-by-step explanation:
150 ft
find volume of this prism
Answer:
[tex]324[/tex] [tex]km^{3}[/tex]
Step-by-step explanation:
V = [tex]\frac{1}{3}[/tex] [tex]b[/tex] · [tex]h[/tex]
V = [tex]\frac{1}{3}[/tex] [tex]81[/tex] · 12
V = [tex]\frac{1}{3}[/tex] [tex]972[/tex]
V = [tex]324[/tex] [tex]km^{3}[/tex]
Consider a sphere with a volume of 36,000 π cubic centimeters.
Find the radius of the sphere. Be sure to use the correct unit in your answer.
Answer:
30 cm
Step-by-step explanation:
[tex]Vol. of a sphere (4/3) \pi r^3=36000 \pi \\r^3=36000*3/4=27000\\r=30 cm\\[/tex]
1) Jack wants to buy a new smart phone for
£495. He has already saved £108.
Each week he earns £60.
He saves 40% of his earnings.
How many more weeks must he save for?
(4 marks)
Answer:
17 weeks
Step-by-step explanation:
Amt. of money left to save
£495 - £108 = £387
Amt. of money he saves each week
40/100 x £60 = £24
Ans: 387/24 = 16.125
= 17 weeks
16 x £24 = £384(not enough, must save one more week)
Qadaria is planting a flower garden in the shape of a right triangle in the back corner of her yard. The two sides shown are 7 feet and 8 feet. She would like to put a small fence around the garden, what is the approximate length, in feet, of the fence?
Answer:
first find the length of the hypotenuse,
a²+b²=c²
7²+8²=113
√113=10.63
perimeter=sum of all sides
10.63+7+8
=25.63
will mark Brainliest :)))))))
A company is going to make an oil container in the shape of a cylinder. As shown below, the container will have a height of 8m and a radius of 7m. The container will be made from steel (including its top and bottom). Suppose the total cost of the steel will be $21,760.20. How much will the steel cost per square meter? Use 3.14 for π, and do not round your answer.
Answer:
3348024.372
hope it helped
How many moles of oxygen atoms are in 2.000 x 10^15 molecules of sulfur dioxide (SO2)?
Answer:
6.64*10^(-9) moles of oxygen.
Step-by-step explanation:
If we have N molecules, the number of moles is given by:
n = N/Nₐ
where Nₐ is the Avogadro's number:
Nₐ = 6.02214076*10^23
In 2.000*10^15 molecules of sulfur dioxide, we have:
n = (2.000*10^15)/(6.02214076*10^23) = 3.32*10^(-9) moles of sulfur dioxide.
Now, sulfur dioxide has two oxygens and a single sulfur.
Then a mole of sulfur dioxide has two moles of oxygen and a single mol of sulfur.
Then in 3.32*10^(-9) moles of sulfur dioxide, we have twice that amount moles of oxygen, or:
2*3.32*10^(-9) = 6.64*10^(-9) moles of oxygen.
What is the surface area of this
rectangular prism?
220 in?
85 in?
290 in?
22 in?
25 in?
12 in.
60 in?
5 in.
5 in.
I need help ASAP
Answer:
290in^2
Step-by-step explanation:
Find the surface area of each side and add them together
5 x 12 = 60
multiply by 4 because there are 4 sides with this same area
60 x 4 = 240
5 x 5 = 25
multiply by 2 because there are 2 sides with this same area
25 x 2 = 50
add the sides together
50 + 240 = 290in^2
what is next in the sequence? -1,2,7,14,23
Answer:
11
Step-by-step explanation:
yes
Does anyone know how to solve this?
Step-by-step explanation:
Strictly increasing functions:
Let a function f(a) for x = a, then,
f(a + h), for x = a + h,
If f(a + h) > f(a), we say this a strictly increasing function, as with increase in x, f(x) also increases.
In the given graph, there are straight lines so you can say increasing interval would have +ve slope.
For x = -4 to 0, it increases = [-4, 0]
For x = 2 to 5, it increases = [2, 5]
Answer: [-4, 0], [2, 5]