Answer:
is this real???
Step-by-step explanation:
a school teacher can grade 3 tests in 18 minutes. If class starts in 3 hours and there are 27 tests to grade, will they be done in time?
Answer:
yes.
honestly, I didn't really do all the math.
3 in 18 minutes, a little better than 3 in 20 minutes. that translates to 9 in an hour, with 6 minutes left over.
3 hours of that (3×9) is the 27. with 6 minutes per hour left over, for a total of 18 minutes.
the teacher has time to grade the tests, get a cup of coffee, and take a few minutes to wonder why she didn't go into an easier line if work.
How many square feet of outdoor carpet will we need for this hole
Please help me with this
Answer:
90,45,45
Step-by-step explanation:
it a system of equations
say that x y and z are each angles of the triangle
that means that they add up to 180 so x+y+z=180
the question says that two of the angles in the triangle are equal so we can just say that x=y
and it says that the two angles that are the same length have a sum that is equal to the third side of the triangle which basically is x+y=z
x+y+z=180
x+y=z
x=y
we start with the first two equations:
since x+y=z then we can substitute z in for x+y in the first equation
z+z=180
2z=180
z=90
and since x=y then
x+x=z
2x=90
x=45
y=45
z=90
hope that helps :)
Please mark brainliest
Mindy is playing a game. She notices that the ratio of red tokens to purple tokens is 2 to 3. She counts 6 red tokens. what can be the number of purple tokens.
Answer:
6
Step-by-step explanation:
double numbers for ecquivelant ratios (i cant spell)
If I have an 86% overall grade in a class and score 40% on a test, what will my grade come out as?
Answer:
It really depends on how much percent of your overall grade tests count as. But, usually they count for about 60% of your grade (depending on what grade you are in). You have about 65% at the lowest and a 75% at the highest. But, I'm just going by what my school does, I don't know how your school grades tests.
Step-by-step explanation:
f I double the amount of water in the cup, I'll also double the pH of the water in the cup.
Answer:
No
Step-by-step explanation:
pH won't increase by adding the same liquid
(unless you add a different water with a different pH)
Subtract. Your answer should be a polynomial in standard form. a (4r ^ 2 - 3r + 2) - (- r ^ 2 - 3r) =
Answer:5r2+2
Step-by-step explanation:
Distribute the Negative Sign:
=4r2−3r+2+−1(−r2−3r)
=4r2+−3r+2+−1(−r2)+−1(−3r)
=4r2+−3r+2+r2+3r
Combine Like Terms:
=4r2+−3r+2+r2+3r
=(4r2+r2)+(−3r+3r)+(2)
=5r2+2
PLATO: Multiplying and Dividing Radical Equations: Mastery Test
Select the correct answer.
Assuming that no denominator equals zero, which expression is equivalent to (n^2-7n+12)/(n-3)(n+4)
Answer:
D
Step-by-step explanation:
took the test
The expression is equivalent to (n² - 7n + 12) is (n-4)/ (n+4).
The correct option is D.
What is Expression?Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation. An expression's structure is as follows:
Expression: (Math Operator, Number/Variable, Math Operator)
We have,
(n² - 7n + 12) / (n-3)(n+4)
So, Factorizing (n² - 7n + 12)
= (n² -3n - 4n +12)
= n(n-3)- 4(n-3)
= (n-3)(n-4)
Then, (n² - 7n + 12) / (n-3)(n+4)
= (n-3)(n-4)/ (n-3)(n+4)
= (n-4)/ (n+4)
Learn more about Expression here:
https://brainly.com/question/14083225
#SPJ7
Def rotates 90 degrees clockwise about point a
Answer:
whut
i dont get it my man.
EnWAP
Bryce plays in 3 football games this month. He drinks 5 bottles of
water during each game. How many bottles of water does Bryce
drink this month?
Answer:
Its 15 because 3 times 5 = 15.
Step-by-step explanation:
WILL MARK BRAINLIEST FOR BOTH QUESTIONS AND DOUBLE POINTS INLY HAVE 6 MINUTES
Answer:
Where is the table for the first question?
Step-by-step explanation:
Find the commission.
Sales: $530 Commission Rate: 8% Commissions: ?
Answer:
42.40
Step-by-step explanation:
may someone please help? also I hope everyone has been doing amazing
Which shows the integers in order from greatest to least? A 22, -11, 8, 7,2 B 2,7,8, -11,22 C -11, 2, 7, 8, 22 D 22, 8, 7, 2, -11
Equivalent fractions 1/3
Answer:
2/6; 3/9
Step-by-step explanation:
Multiply both the numerator and the denominator by the exact same number to find equivalent fractions
For example, I will randomly choose to multiply both by 2
Example 1:
1 × 2 / 3 × 2
2/6
Now, I'll do 3
Example 2:
1 × 3 / 3 × 3
3/9
You can check your work by dividing both the numerator and the denominator by the original fraction (1/3) to see if you get the number 1
Example 1:
2/6 ÷ 1/3
Copy dot flip
2/6 × 3/1
2 × 3 / 6 × 1
6/6
1
Example 2:
3/9 ÷ 1/3
Copy dot flip
3/9 × 3/1
3 × 3 / 9 × 1
9/9
1
CLICK ON THE PICTURE FOR THE QUESTION,, please help
Answer:
Step-by-step explanation:
A(-10,-3), B(7,14)
slope of AB = (-3-14)/(-10-7) = 1
slope of perpendicular to AB = -1
equation of perpendicular through C(5,12):
y-12 = -(x-5)
y-12 = -x+5
x = -y+17
x-intercept is the value of x when y=0.
x-intercept = 17
(0,17) is a point on CD.
Please help with these 2 math problems. ( Multiple choice) im begging. Please don't just do it for points I really need help
Enter an expression for the perimeter of the given figure. Simplify the expression.
10.2 in.x + 2 in.x + 2 in.x + 2 in.x + 2 in.10.2 in.
The perimeter of the figure is inches.
Answer:
4x + 28.4 in.
Step-by-step explanation:
perimeter = sum of lengths of sides
perimeter = x + 2 + x + 2 + x + 2 + x + 2 + 10.2 + 10.2
perimeter = 4x + 28.4
Multiply. (5y+2)(6y-7)
Answer:
30y^2−23y−14
Step-by-step explanation:
What's 5 1/4 times 8 2/7
Answer: 43.5
Step-by-step explanation:
Which of the following are prime polynomials? z-1 4z+20 6z-42 -7z+26
Answer:
mmmmmmmmmmmmmm
Step-by-step explanation:
Answer:
110z-16
Step-by-step explanation:
z-(1)(4)z + (20)(6)z -42 -7z + 26
=z + -4z + 120z + -42 + -7z + 26
=z + -4z + 120z + -42 + -7z +26
=(z+-4z+ 120 + -7z) + (-42 +26
Triangle X has m2A = 30°, mZB = 90°, and m2C = 60° with side lengths of AB = 3, BC = 4, AC = 5.
Triangle Y has m2A = 30°, mZB = 90°, and mZC = 60' with side lengths of AB = 9, BC = 12, AC = 15.
Which statement best describes the relationship between these two triangles?
O They are similar triangles.
O They are similar and congruent triangles.
O They are congruent triangles.
O They are congruent but not similar triangles.
Answer:
O They are similar triangles.
Step-by-step explanation:
Given
Triangle X
[tex]\angle A = 30[/tex]°, [tex]\angle B = 90[/tex]°, [tex]\angle C = 60[/tex]°
[tex]AB = 3,\ BC = 4,\ AC = 5.[/tex]
Triangle Y
[tex]\angle A = 30[/tex]°, [tex]\angle B = 90[/tex]°, [tex]\angle C = 60[/tex]°
[tex]AB = 9,\ BC = 12,\ AC = 15.[/tex]
Required
The relationship between X and Y
From the given parameters, the corresponding angles of both triangles are equal i.e.
A = A, B = B and C = C
However, the side lengths are not equal.
The side lengths of Y is 3 multiplied by the side lengths of X.
This is shown below:
Triangle X
[tex]AB = 3,\ BC = 4,\ AC = 5.[/tex]
Multiply by 2 to get Triangle Y
[tex]AB= 3 * 3 = 9[/tex]
[tex]BC= 4 * 3 = 12[/tex]
[tex]AC = 5 * 3 = 15[/tex]
Since side lengths are not equal, but they have a common ratio of 3, then the triangles are similar.
find the distance between u and v in the coordinate plane
options
A) 2 square root of 2 units
B) 4 square root of 13 units
C) 2 square root of 17 units
D) 2 square root of 37 units
What conclusion can you draw about the conditional relative frequency of the results? There is no association between supporting the tax and gender. A resident in the group who supports the tax is likely to be female. A resident in the group who supports the tax is likely to be male.
Answer:
C or A resident in the group who supports the tax is likely to be male
Step-by-step explanation:
Answer:
its C
Step-by-step explanation:
Edg 2021
Anthony owns a bakery and buys raw eggs in packs of 50 for $5.00 each. The delivery is a set free of $10.00. If Anthony has $100.00 to spend, what is the domain of this function, where x represents the number of packs of eggs?
Answer:
D- The set of whole numbers were 1<_x<18
Step-by-step explanation:
Find x,y and 2. (leave answer in simplest radical form) *
Answer:
x = 32
y = 16sqrt(5)
z = 8sqrt(5)
Step-by-step explanation:
x/16 = 16/8
x/16 = 2
x = 32
y^2 = 16^2 + 32^2
y^2 = 1280
y = 16sqrt(5)
z^2 = 8^2 + 16^2
z^2 = 320
z = 8sqrt(5)
1/2 x 1/5 .............
Answer:
1/10 is the answer
Step-by-step explanation:
1/2x 1/5= 1/10
Answer: 1/10
1/2⋅1/5=1/10
Solution
1/10
▀▄▀▄What is the LCM and GCF of 25 and 75? ▄▀▄▀
Answer:
LCM = 75
GCF = 25
Step-by-step explanation:
25 = 5 x 5
75 = 3 x 5 x 5
LCM = 3 x 5 x 5 = 75
GCF = 5 x 5 = 25
Hope that helps!
Answer: The LCM of 25 & 75 is 75, and the GCF of them is 25
Step-by-step explanation: hope it helps :)
Write a function rule for the relationship between the amount of plant food remaining, f(x), and the number of days that have passed, x. Type the correct answer in the box.
Answer:
f(x) = 72-12x
Step-by-step explanation:
this might be too late but it could be useful for future people
Answer:
f(x) = 72-12x
took a while to solve.......
Polygon A is a reflection of polygon B about the line y = x. Which of the following must be true?. A. If polygon A is in quadrant II, then polygon B must be in quadrant II B. Polygon A must be congruent to polygon B C. Polygon A is also a rotation of polygon B about a point D. Polygon A is not congruent to polygon B