The ratio of positive reviews to negative reviews on David's customer feedback website is 3:5. There are 352 reviews on David's website Part A: What fraction of the reviews on David's website is positive? What fraction is negative? Explain your reasoning. Part B: How many positive reviews would need to be added to David's website to make the ratio of positive reviews to negative reviews equal to 1: 1? Explain your reasoning
Answer:
Part A
positive=132
negative=220
Part B=88
Step-by-step explanation:
Part A
3:5
positive: negative
3+5=8
352/8=44
3x44=132 positive or 3/8 of 352
5x44=220 negative 5/8 0f 352
Part B
220
-132
---------------
88
(ii) 3x - 5y - 4 = 0 and 9x = 2y +7
Step-by-step explanation:
3×‐9×-5y-2y =0-7
-6x-7y =-7
Answer:
[tex]x = \frac{9}{13} \ , \ y = - \frac{5}{13}[/tex]
Step-by-step explanation:
3x - 5y = 4 ----------- ( 1 )
9x - 2y = 7 -----------( 2 )
______________________
( 1 ) x 9 => 27x - 45y = 36 ----------------- ( 3 )
( 2) x 3 => 27x - 6y = 21 -------------------( 4 )
_____________________
( 3 ) => 27x - 45y = 36
- ( 4 ) => -27x + 6y = - 21
____________________
( 3 ) - ( 4 ) => 0x - 39y = 15
-39y = 15
[tex]y = \frac{15}{-39} = -\frac{5}{13}[/tex]
Substitute y in ( 1 ) :
[tex]3x - 5y = 4\\\\3x - ( 5 \times -\frac{5}{13}) = 4\\\\3x + \frac{25}{13} = 4\\\\3x = 4 - \frac{25}{13}\\\\3x = \frac{52 - 25}{13}\\\\3x = \frac{27}{13}\\\\x = \frac{27}{13 \times 3}\\\\x= \frac{9}{13}[/tex]
80 25 x pls help me with this one
Answer:
25
Step-by-step explanation:
Answer:
x = 25
Step-by-step explanation:
Okay so as you can see there is an x shape and whenever you have that it means they are verticle angles. So we can conclude that 25 is verticle to x and so x is equal to 25.
Which algebraic expression would NOT be equivalent if the number and the variable were reversed? A. N+8 B. M−5 C. K×8 D. 4+x
Answer:
B) M-5
Step-by-step explanation:
the commutative property does not apply to subtraction or division, only addition and multiplication
Helpppp plz
What is the value of x?
Answer:
answer:
(x+34)+(2X+2)=180
3X+36=180
X=72
Step-by-step explanation:
Select the correct answer.
Simplify the expression so there is only one power for each base.
(3-2) = (32.23)
A. 33.23
OB. 32.22
OC. 37:28
OD. 33.2²
Answer:
Your answer for the above equation is D
Match the equation of circle with its center and radius.
Answer:
1- c=(-2,1) , R =9
2-c=(2,-1) , R=3
3-c=(-2,-1) , R=4
4-c=(2,1) , R=16
5-c=(0,0) , R=2
PLS HElp!!!!!! 13pt ;-;
Answer:
djjdkdjddjfjfirrifkfkfjfkfkgkgkggkgkgkgkkkgkgkgkgkghotoriasjekic
If y varies directly with x and y=95 when x=5, find x when y=38.
Answer:
X is 2
Step-by-step explanation:
the equation is Y = 19X
when X=5, Y=95
when Y=38, X = 38/19 = 2
Callie surveyed 40 students at her school to see how many have dogs and/or cats. She found that 40% of students who have dogs, don't have cats.
Complete the table below.
Answer:
60 students don't have dogs
Step-by-step explanation:
Given data
number of students survayed= 40 students
40% of students have dogs
We can further find the number of students who have and don't have dogs
40/100*x= 40
0.4*x=40
x=40/0.4
x= 100 students
This means 60 students dont's have dogs
Craig washed 4/5 of the windows on a building, and
Martha washed 1/5 of them. How much greater was
Craig's fraction of the windows than Martha's?
Answer:
B
Step-by-step explanation:
Since the denominator is the same for both fractions you can just subtract 1/5 from 4/5.
(4/5) - (1/5) = (3/5)
Which of the following is impossible to draw?
-A triangle with with three 120° exterior angles
-A triangle with three acute interior angles
-None of the answers listed here are correct
-A quadrilateral with four interior acute angles
Answer: A quadrilateral with four interior acute angles
Step-by-step explanation:
If you add four angles for quadrilateral = 360 & acute angle is less than 90 degrees so it isn't possible.
While making oatmeal cookies, Angela needs to add cup of milk to her dough. However, she has only a -cup measuring cup. How many times does she need to fill the measuring cup to pour cup of milk?
The number of times Angela needs to fill the -cup measuring cup to pour cup of milk is
Answer:
2 -cups
Step-by-step explanation:
-cup = 1/2 cup
-cup =1/2 cup
1/2 + 1/2 = 1 cup
which fraction is equal to 3/6?
A box measures 1 ft. long, 1/2 ft. wide, and 1/2 ft. high. Find the volume in inches. Do not include units in your answer
Answer and Step-by-step explanation:
To find the volume, simply multiply all the sides together.
0.5 × 0.5 × 1 = 0.25 is the answer.
#teamtrees #PAW (Plant And Water)
ILL GIVE BRAINLIEST!!
Find the length of AB.
6 in
130°
AB = [ 2 ]in
Answer:
Length arc AB = 3.14 in
Step-by-step explanation:
Length of arc AB = central angle/360 * 2πr
Central angle = 30°
Radius (r) = 6 in.
Substitute
Length of arc AB = 30/360 * 2*π*6
Length arc AB = 3.14 in. (Nearest tenth)
Answer:
3.14
Step-by-step explanation:
its just right
Evaluate the expression for the given value of the variable(s).
2a + 4b; a = 5,6 = -6
Answer:
-14
Step-by-step explanation:
2a + 4b
Let a = 5 and b = -6
2*5 +4(-6)
Multiply
10 - 24
Subtract
-14
Answer:
-14
Step-by-step explanation:
2a + 4b
= 2(5) + 4(-6)
= 10 -24
= -14
Jenna is a 6th grader at CMS. Jenna was told her mean score on social studies quizzes was 94. She remembered getting scores of 97, 88, 90, and 95, but she knew she had taken 5 quizzes. What was her fifth quiz score?
Answer: 100
Step-by-step explanation:
Since she had a mean score of 94 in her 5 tests, then the total score will be:
= 94 × 5
= 470
Since she She remembered getting scores of 97, 88, 90, and 95, for 4 quizzes out of 5 quizzes, the total of the four quizzes will be:
= 97 + 88 + 90 + 95
= 370
Then, her 5th quiz will be:
= 470 - 370
= 100
Is r = 10 a solution to the inequality below?
10 ≥
r
Yes or no
Answer:
Yes.
Step-by-step explanation:
That sign means greater than and/or equal to (the little line) since 10 is equal to 10, then r can be 10
A woman purchases 10 bananas and 15 oranges. What percentage of fruit purchased was oranges?
Answer:
60%
Step-by-step explanation:
Fruit = 10+15 = 25
Percent oranges = oranges / fruit
= 15/25 = .6 = 60%
5.
What is the solution of -17 = -2y + 13 – 8y?
Answer:
3
Step-by-step explanation:
-17 = -2y + 13 - 8y
-17 = -10y + 13
-30 = -10y
3 = y
y = 3
Answer:
y = 3
Step-by-step explanation:
- 17 = - 2y + 13 - 8y
- 10y + 13 = - 17
- 10y + 13 - 13 = - 17 - 13
- 10y = - 30
- 10y ÷ - 10 = - 30 ÷ - 10
y = 3
Alan has 3 quarters and 7 dimes in his pocket. If he takes out a coin, puts it back in his pocket, and then takes out a coin again, what is the probability that both coins are dimes?
Answer:
Probability of picking a dime both times = (7/10)^2 = 49/100, or 0.49
Step-by-step explanation:
Picking with replacement, twice from 3 quarters and 7 dimes.
Probability of picking a dime each time = 7/10.
Probability of picking a dime both times = (7/10)^2 = 49/100, or 0.49
Which best describes the domain and range of the function y = = 4x²?
Answer:
Domain: (-infinity, infinity)
Range: [0, infinity)
Step-by-step explanation:
y = 4x^2 is a quadratic function whose parabolic graph goes through (0, 0) and opens upward. (0, 0) is both the vertex and the minimum of this function and graph. Here x can take on any value, but y is limited to [0, infinity).
Given that a : b= 8:5 and 6: c= 3: 4,
find the ratio a : 6:c
Give your answer in its simplest form.
(3 marks)
HELP PLEASE HURRY AAAAAeeeee
Answer:
300+12x = 450
or
B. 12x+300 = 450
Remy orders 5 pizzas. If each person gets 1/4 of a pizza, how many people can Remy feed?
Answer:5
Step-by-step explanation:
Answer:
20
Step-by-step explanation:
Each pizza Remy can feed 4 people.
Remy has 5 pizzas.
4x5=20
Find the expression different from the others. Do this by showing that the other four are equivalent to each other using the properties of exponents. (4 points)
A)2^4x+2
B)4•16^x
C)2+4^4x
D)2^2 • 4^x (over) 4^-x
E)4^2x+1
Answer:
C) 2+4^4x
Step-by-step explanation:
A) 2^(4x+2) = 2^4x • 2² = 16^x • 4
B) 4 • 16^x = 16^x • 4 (already done)
D) 2^2 • 4^x (over) 4^-x
= 4 • 4^x • 4^x = 16^x • 4
E) 4^(2x+1) = 4^2x • 4¹ = 16^x • 4
please help me ASAP I WILL GIVE U BRAINLIEST!
Answer:
[tex]\sqrt{13}[/tex]
Step-by-step explanation:
Given a vector < x, y > then its magnitude is
[tex]\sqrt{x^2+y^2}[/tex]
Given the directed line segment
P (0, 0 ) → Q (3, 2 ) then
PQ = q - p = (3, 2 ) - (0, 0 ) = < 3 - 0, 2 - 0 > = < 3 , 2 >
| PQ | = [tex]\sqrt{3^2+2^2}[/tex] = [tex]\sqrt{9+4}[/tex] = [tex]\sqrt{13}[/tex]
A PQR = A STU. Find the lengths of the sides PQ, TU, and SU.
P
S
10 in
7 in
8 in
R
T
U
[mark all correct answers]
O a. PQ = 10 in
O b. TU = 8 in
O c. SU = 6 in
O d. TU = 10 in
O e. PQ = 8 in
O f. SU = 7 in
measure using the object
3.
Find the value of x. If necessary, round to the nearest tenth.
A. 7.0 in.
B. 11.9 in
C. 9.9 in.
D. 14.0 in
Answer:
C. 9.9 in.
Step-by-step explanation:
Step-by-step explanation:
Alright, lets get started.
Area is given as 49 square inches.
The formula for area A =
base is given as x
Height is given as x
Hence area is A
A =
Multiplying 2 in both sides
Taking square root on both sides
hence the answer is x = 9.9 in : Answer
Hope it will help :)
The value of x is 9.9 in.
Solution:
The given image is a triangle.
Base of the triangle = x
Height of the triangle = x
Area of the triangle = 49 sq. in
To find the value of x:
Area of the triangle =
Substitute the given values in the formula.
Multiply by 2 on both sides, we get
Taking square root on both sides, we get
⇒ x = 9.9 in
Hence the value of x is 9.9 in.
