Answer:
Harry needs to make 12 potions to get an A.
Step-by-step explanation:
He currently has a D
+ 4 = C
+ 4 = B
+ 4 = A
4 + 4 + 4 = 12 potions
So, Harry needs to make 12 potions to get an A in his potions class.
What’s the answer for 21?
Answer:
C
Explanation:
A: 2 in. by 2 in. by 1 in. = 4 cubic inches
B: 1 in. by 1 in. by 1 in. = 1 cubic inches
C: 2 in. by 1.5 in. by 0.5 in. = 1.5 cubic inches
D: 3 in. by 0.5 in. by 1.5 in. = 2.25 cubic inches
Therefore, the answer is C.
Find the value of x. Leave your answer in simplest radical form.
Answer:
First you need to find at least two dimensions of the triangle containing a side length of x. The triangle of the top can be used for that. The hypothenuse for the 7,3 triangle is [tex]\sqrt{58}[/tex].
Now we can use the other triangle with sides of x,[tex]\sqrt{58}[/tex], and a hypothenuse of 9 to find x.
x^2 + [tex]\sqrt{58}^2[/tex] = 9^2
simplify
x^2 + 58 = 81
subtract 58 from both sides
x^2 = 23
x = [tex]\sqrt{23\\}[/tex]
and since this radical cannot be simplified further that is your answer.
Step-by-step explanation:
Step-by-step explanation:
Pythagoras.
c² = a² + b²
c being the Hypotenuse (the side opposite of the right angle).
so, the length of the rectangle is the Hypotenuse of the right-angled triangle on the top :
length² = 7² + 3² = 49 + 9 = 58
length = sqrt(58)
the diagonal of the rectangle is again the Hypotenuse of the right-angled triangle of length (sqrt(58)), width (x) and diagonal (9) of the rectangle.
so, we have
9² = sqrt(58)² + x² = 58 + x²
81 = 58 + x²
23 = x²
x = sqrt(23)
(Rational expression)
Simplify:
Answer:
Step-by-step explanation:
2) a(a + b) + b(a - b) - 2ab / a² - b²
= a² + ab + ab - b² - 2ab / a² - b²
= a² - b² / a² - b²
= 1
3) [x - 1/(x - 1)(x - 2)] + [x - 2/(x -2)(x - 3)]
= (1 / x - 2) + (1 / x - 3)
= x - 3 + x - 2 / (x - 2)(x - 3)
= 2x - 5 / x² - 5x + 6
When a random sample is selected from a population, the sample mean is not expected to be exactly equal to the population mean. On average, the size of the difference between a sample mean and the population mean is predicted by
Which of the following equations does not represent a linear relationship between x and y
A.y=4x
B.y= 2x^2 + 5x
C. 5x= 3(Y - 2)
d. 6x - 7y = 13
A linear relationship is an equation that has a constant slope
The equation that does not represent a linear relationship is (b) y = 2x^2 + 5x
How to determine the non-linear relationshipA linear equation can take any of the following forms:
y = mx + b
y - y1 = m(x - x1)
Ax + By = c
Any form different from the above forms is not a linear equation
Using the above format as a guide, the equation that does not represent a linear relationship is (b) y = 2x^2 + 5x
Read more about linear relationships at:
https://brainly.com/question/15602982
what is the value of x?
Answer:
x = 10
Step-by-step explanation:
All angles in a triangle must add up to 180. We know one angle is 68 and another is 90 because there is a right angle (which are always 90).
180 = 90 + 68 + (2x + 2)
180 = 158 + (2x + 2). subtract 158 from both sides
22 = 2x + 2. subtract 2 from both sides
20 = 2x. divide both sides by 2
10 = x
Answer:
x = 10
Step-by-step explanation:
2x + 2 + 68 + 90 = 180
2x + 160 = 180
2x = 20
x = 10
Evaluate the expression
−1+(4/2(6−1))2
Answer:19
Step-by-step explanation:
−1+(
4
2
(6−1))(2)
=−1+2(6−1)(2)
=−1+(2)(5)(2)
=−1+(10)(2)
=−1+20
=19
NEED ANSWER ASAP + BRANLIEST
Answer:
x=1 -/+ (root 13)
Step-by-step explanation:
6 The system of equations shown below has no solution.
Change one number in one of the equations so that the
system has one solution. Graph your new system on
the coordinate grid to support your answer.
y= 2x – 1
y = 2x + 1
Answer:
its b
Step-by-step explanation:
The width of a rectangle is 4 inches, and the length is 9 inches, what is the length of a side to a square that has the same area as a rectangle
Answer:
36
Step-by-step explanation:
9x4=36
Blackberry is also in the business of selling phones. The data for the profit that Blackberry makes on selling tablets is resented by the following equation with profit being P(b) and b being number of blackberry phones sold (both variables in million)
Answer:
2
Step-by-step explanation:
this might be the rong answer
by rounding each number to 1 significant figure, estimate the answer to 623 - 14.71 ÷ 0.54.
623 to 1 significant number = 600
14.71 to 1 significant number = 10
0.54 to 1 significant number = 0.5
answer:
[tex]\tt \dfrac{600-10}{0.5}=1180[/tex]
Malaya creates a password as follows: letter, number, letter, special character, number Assuming that there are 12 special characters, if you were trying to guess Malaya’s password, what is the most guesses that you would have to make? a. 702,000 b. 811,200 c. 205,476,480 d. 254,803,968.
Answer:
✅ B. 811,200edgen
Answer:
B
Step-by-step explanation:
got it right on edge
Evaluate 8w - 2p if w = 6 and p = -5
Known facts
w = 6p = -58w - 2p = 8(6) - 2(-5) = 48 + 10 = 58
Answer: 58
Hope that helps!
Answer:
58
Step-by-step explanation:
Knowing that w = 6 and p = -5
Thus, equation look like this:
8(6)-2(-5)
Now Let's Multiply:
8(6)=48 and -2(-5) = 10 [ (-) + (-) = (+) and (+) +(+) =(+)
48 + 10 = 58
Answer = 58
[RevyBreeze]
Michael buys a pair of jeans that regularly costs $62. The jeans were discounted 30%. How much money did Michael pay for the jeans?
Plss help
Answer:
$43.40
Step-by-step explanation:
First, you would have to find out how much was discounted. To find this, you multiply $62.00 (the total) by 30% (the discount sale). You will end up getting $18.60. Finally, you can subtract $18.60 from the original total which was $62.00 to get $43.40 after the discount.
16.) The population of Wolf County was 12,390 in 2000 and 13,090 in 2010. Assuming that population growth in this county is linear, find the following:
b.) When will the population reach 21,000 people?
c.) When did the first settlers arrive in Wolf County?
what makes this bond correct
3/4+__=2
WHATS THE ANSWER
Answer:
The answer is 5/6.
Step-by-step explanation:
Lets start with a=1.
a+1=2, which is the denominator. (1/2)
Taking the same number as numerator, now, consider a=2.
a+1=3, denominator.(2/3)
Now, let a=3.
a+1==4, denominator for a=3. (3/4)
If continued a becomes equal to 4.
a+1=5, which is also the denominator. (4/5)
Now, since the denominator is 5, let a=5.
a+1=6, which will become the denominator. (5/6)
Thus the series follows a pattern of a/a+1.
Answer:
5/4
Step-by-step explanation:
Let's put the unknown value as X
To solve this equation, we must solve for x
First we need to isolate x, which means we need to get it by itself.
To do this, we must subtract 3/4 on both sides since it is being added.
This gets rid of 3/4 on the first side and changes the second side to whatever 2+3/4 is
This leaves us with x=5/4
Therefore, your answer is 5/4.
PLS PLS PLS HELP ME...
Answer:
10
Step-by-step explanation:
Take the bottom number from the smaller triangle and multiply by 10 (just like they did for the 3 which is how they turned it into 15)
Solve the system of equations x - 4y = 7
2x + y = 5
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Anna selects a positive multiple of 4 that is less than forty, and Becky selects a positive multiple of 3 that is less than sixty. What is the probability that they pick the same number?
I will mark brainliest!
Answer:
3/171
Step-by-step explanation:
The problem can be simplified into finding probability that Anna and Becky select 12 or 24 or 36 which are less than 40 and multiples of 3 and 4.
Probability of Anna selecting 12 = 1/9
Probability of Becky selecting 12 = 1/19
Probability of Anna and Becky selecting 12 = 1/9 * 1/19 = 1/171
Probability of Anna and Becky selecting 12 or 24 or 36 = 3* 1/171 = 3/171
Solve for x. Round to the nearest tenth of a degree, if necessary.
S
8.8
70
T
13
U
Use law of sines:
Cos(x) = adjacent/ hypotenuse
cos(x) = 8.8/13
X = arcsin(8.8/13)
X = 47.396 degrees
Rounded to the nearest tenth = 37.4 degrees
Thabo rounded the number to the nearest 5. His answer was 340. Write down 2 possible number for the actual number of marbles
Answer:
Two possible values: 339 and 341.
Step-by-step explanation:
Any number that satisfies 335<x<345
find the distance between (15, -7) and (-20, -5)
The distance is __ units
Answer: The distance between the two points in exact form is
√1229 and the decimal form is 35.05709628...
What is the numerator and denominator in a division?.
Answer:
Numerator and denominator also signify division. A fraction is equal to its numerator divided by its denominator.
6 : 2
6 is the numerator and 2 is the denominator
6/2
6 is the numerator and 2 is the denominator
What equation represents the line shown:
Answer: B) y=-3x+2.
Step-by-step explanation:
+2 is where the line touches on the y axis. and for -3. you find 2 points and you go from 1 point to the other. the points i got were. (0,2) (2,-4). i went down 6 times, and to the right 2. that’s a fraction 6/2. and then simplify. 2 can go into 6 three times, and can go into 2 once. 3/1. since there’s a 1 underneath it’s just 3. and since you went down. it’s is negative. so y=-3x+2 is your answer.
In a school 50% of the students are younger than 10, 1/20 are 10 years old and 1/10 are older than 10 but younger than 12, the remaining 70 students are 12 years or older. How many students are 10 years old?
Answer:
10 students
Step-by-step explanation:
Given :-
50% younger than 10
1/20 (or 5%) are 10
1/10 (or 10%) are older than 10 but younger than 12
Remaining students = 100% - 50% - 10% - 5%
= 35%
= 70 students
Total students
=> 7T/20 = 70
=> 7T = 1400
=> T = 200
10 year old students
= T x 5%
= 200 x 1/20
= 10 students
Given :
[tex]50\%[/tex]younger than [tex]10[/tex]
[tex]\frac{1}{20} [/tex](or 5%) are 10
[tex]\frac{1}{10}[/tex] (or 10%) are older than 10 but younger than 12
☆Remaining students = [tex]100\% -50\% - 10\% - 5\%[/tex]
» [tex]35\%[/tex]
» [tex]{{\bold{{{{{ \pink{70 \: students}}}}}}}}[/tex]
☆Total students
↣ [tex]\frac{7 \: total}{20} = 70[/tex]
↣ [tex]7 \: total = 1400[/tex]
↣ [tex]{{\bold{{{{{ \pink{total = 200}}}}}}}}[/tex]
☆10 year old students
↣ [tex]total \times 5\%[/tex]
↣ [tex]200 \times \frac{1}{20}[/tex]
↣ [tex]{{\bold{{{{{ \pink{10 \: students}}}}}}}}[/tex]
Express 55 as a fraction in simplified form
Answer:
11/20 in fractional form
Step-by-step explanation:
If chicken costs 10¢ per ounce and grain costs 1¢ per ounce, how many ounces of each should
Ruff use in each bag of dog food to minimize cost?
The cost of the chicken and the grain are illustrations of linear programming
The minimized cost is 12¢
How to determine the minimized costRepresent the number of chicken with x and the number of grain with y.
So, the objective function is
Min Z = 10x + y
The constraints are not given.
So, the function cannot be minimized.
However, assume the minimum feasible values of x and y are (1,2), the minimized cost would be:
Z = 10 * 1 + 2
Z = 12
Hence, the minimized cost is 12¢
Read more about linear programming at:
https://brainly.com/question/15356519
Refer to the figure. Justify your answer. Suppose the base and height are each multiplied by 1/2 (0.5). What effect would this have on the area? *
Answer: The Area Would be 12, 1/4 the original area of 48, therefore signifying that it was quartered.
Factor completely 4x3 28x2 7x 49. (x − 7)(4x2 7) (x − 7)(4x2 − 7) (x 7)(4x2 7) (x 7)(4x2 − 7).
Answer:
hope this helps
Step-by-step explanation:
Please fallow the steps it will help you
Step1: 4x^3 + 28x^2 + 7x + 49
Step 2: 4x^2(x+7) + 7(x+7)
Step 3: (4x^2+7)(x+7)
Step 4: (x+7)(4x^2+7)
