Answer:
Because it is in between to numbers
Step-by-step explanation:
I hate begging
Out of the 21 students in Terry's class, 15 prefer spaghetti over meatloaf. There are 420 students in Terry's middle school. Based on these survey results, how many students at Terry's school could be expected to prefer spaghetti over meatloaf?
Answer:
300 can be expected to prefer spaghetti over meatloaf.
Answer:
Step-by-step explanation:
15:21 = x:420 (students that want da spaghetti:overall students)
cross multiply
15 x
21 420
6300=21x
divide by 21 on both sides
300=x
300 students out of the 420 prefer da spaghetti
Fill in wats missing?
A. Y=x^2+3 B. Y=2/3x+6 C. Y=|x|+4 D .Y=2x-5 1. Identify the linear equations from the list. 2. State the constant rate of change for each linear equation. 3. Briefly describe the relationship between constant rate of change and linear equations.
Answer:
Step-by-step explanation:
1. An equation is said to be linear if the variables have power not greater than 1.
Thus, the linear equations from the list are:
B. Y = [tex]\frac{2}{3}[/tex]x + 6
C. Y = |x| + 4
D .Y = 2x - 5
2. Comparing the equations with y = mx ± c, the constant rate of change for each linear equation are:
B. [tex]\frac{2}{3}[/tex]
C. 1
D. 2
3. The constant rate of change is the gradient (slope) of a linear equation. It describes the steepness of a line from the plot of points obtained from the linear equation.
(-x²+9) + (-3x²-11x+4)
Answer:
=-4x^2-11x+13
Step-by-step explanation:
whats the slope of (8,18) and (16,24)
Answer:
6/8
Step-by-step explanation:
I answered this math question on edge and 100%.
At the beginning of Grade 6, the ratio of advanced math students to the number of regular math students was 3: 8. After taking placement tests, students we removed around changing the ratio of advanced students to the number of regular students to 4: 7. How many students started in regular math and advanced math if there were 92 students in advanced math after the placement test?
Answer:
69 students were advanced and 184 were regular
Step-by-step explanation:
begining
advance 3: regular 8
after exam
advance 4 (92students) : regular 7 (92/4=23; 23*7=161 students)
So total students we have 161+92=253,
remember we have advance 3: regular 8 so
253/(3+8)=253/11=23
23*3=69, 23*8=184
PLEASE PLEASE PLEASE HELP QUICK TOO PLEASE
Answer:
B 53.
Step-by-step explanation:
180-79=101
101+6x+13=180
-114 -114
6x=66
x=11
3(11)+20
33+20
53
Two lines, C and D, are represented by the following equations: Line C: y = x + 5 Line D: y = −2x − 1 Which of the following options shows the solution to the system of equations and explains why? (4 points) a (−2, 3), because the point does not lie on any axis b (−2, 3), because both lines pass through this point c (−2, 3), because one of the lines passes through this point d (−2, 3), because the point lies between the two axes
Answer:
The correct answer is B
Step-by-step explanation:
I know this is the answer because I took the test and got it right.
-3x - 8 = 50
Anyone know how to solve this by elimination?
maria rode her bike for three-fifths of a miles did she ride altogether
A.1/5 B.3/10 C.7/5 D.4/5
Complete Question:
Maria rode her bike for three-fifths of a mile on Monday and one-fifth of a mile on Tuesday. How many miles did she ride altogether?
Group of answer choices.
A. 1/5
B. 3/10
C. 7/5
D. 4/5
Answer:
D. 4/5
Step-by-step explanation:
Given the following data;
Distance covered on Monday, D1 = 3/5 miles
Distance covered on Tuesday, D2 = 1/5 miles
Total distance covered, Td = D1 + D2
Substituting into the equation, we have;
[tex] Td = \frac {3}{5} + \frac {1}{5}[/tex]
Lowest common denominator (LCD) = 5
[tex] Td = \frac {3 + 1}{5} [/tex]
Td = 4/5 miles.
Therefore, Maria rode 4/5 miles altogether.
Describe and correct the error in finding the slope and the y-intercept of the graph of the equation.
Answer:
The error is the slope is -4 and the correct is, the slope is [tex]-\frac{1}{4}[/tex]
Step-by-step explanation:
You must put the equation in the form of y = m x + b, where
m is the slope b is the y-interceptLet us put the equation n the form above
∵ x = -4y
→ Switch the two sides
∴ -4y = x
→ Make the coefficient of y equal 1 by divide both sides by -4
∵ [tex]\frac{-4y}{-4}[/tex] = [tex]\frac{x}{-4}[/tex]
∴ y = [tex]\frac{x}{-4}[/tex]
→ Write [tex]\frac{x}{-4}[/tex] as [tex]-\frac{1}{4}[/tex] x
∴ y = [tex]-\frac{1}{4}[/tex] x
→ Compare it by the form above
∴ m = [tex]-\frac{1}{4}[/tex] and b = 0
∴ The slope of the is [tex]-\frac{1}{4}[/tex] , and the y-intercept is 0
∴ The error is the slope is -4 and the correct is the slope is [tex]-\frac{1}{4}[/tex]
8.15,8.04,8.009 least to greatest
Answer:
8.009, 8.04, 8.15
Step-by-step explanation:
Look at the decimal places. The farther away it is on the right side, the less the value of the number.
Answer:
8.009; 8.04; 8.15
Step-by-step explanation:
8.009 is the least
8.15 is the greatest
hope this helps :3
if it did pls mark brainliest
divide 880 in the ratio 3:5
Answer:
Step-by-step explanation:
So take 3:5 and add them which gets us 8 then divided 880 by 8 = 110
Hope this helps :D
Answer:
330:550
Step-by-step explanation:
divide 880 to (3+5=8) so 880/8=110
3:5 will be 3*110: 5*110 so is 330: 550
A book advertised as 20% off. If it cost 70$ how much was it originally
Answer:
The answer is $84
Step-by-step explanation:
hope this helps
$70×0.2=14
$70+$14=$84
Answer:
Step-by-step explanation:
$87.50 would be your answer
since you're trying to find the book cost originally you would subtract the total minus the discount to get .8
then you would divide 70/.8 to get your answer of 87.50
Helen has five times more as money as Brian they're both have $42 together how much do they have
Answer:
Helen has $35 and Brian has $7
Step-by-step explanation:
5b + b = 42
6b = 42
/6 /6
b = 7
7(5) + 7 = 42
35 + 7 = 42
42=42
multiplying two complex numbers involves _____
Answer:
232
Step-by-step explanation:
232
Which equation is perpendicular to y = 4x - 6 and passes through point (8, 12).
Answer:
The line is ;
4y = -x + 56
or
y = -x/4 + 14
Step-by-step explanation:
Generally, the equation of a straight line is;
y = mx + c
where m represents the slope
so for y = 4x - 6
The slope is 4
If two lines are perpendicular, the product of their slopes is -1
So for the second line, the slope will be -1/4
The equation in the point slope format will be ;
y-12 = -1/4(x-8)
y-12 = -x/4 + 2
Multiply through by 4
4y-48 = -x + 8
4y = -x + 8 + 48
4y = - x + 56
The equation of the line that passes through (8, 12) and is perpendicular to y = 4x - 6 is:
[tex]y - 12 = -\frac{1}{4} (x - 8)[/tex] (point-slope form)
or
[tex]y = -\frac{1}{4}x + 14[/tex] (slope-intercept form)
Recall:
Point-slope equation is given in the form of: y - b = m(x - a)Slope-intercept equation is given in the form of: y == mx + bWhere, m is the slopeThe slopes of two lines that are perpendicular to each other are the negative reciprocal of one another.Given:
y = 4x - 6
Slope (m) = 4The negative reciprocal of 4 is: -1/4To write the equation of a line that passes through (8, 12) and is also perpendicular to y = 4x - 6, substitute m = -1/4 and (8, 12) into
y - b = m(x - a)
Thus:[tex]y - 12 = -\frac{1}{4} (x - 8)[/tex] (point-slope form)
Rewrite in slope-intercept form
[tex]y - 12 = -\frac{1}{4} (x - 8)\\\\y - 12 = -\frac{1}{4}x + 2\\\\y = -\frac{1}{4}x + 2 + 12\\\\y = -\frac{1}{4}x + 14[/tex](point-slope form)
Therefore, the equation of the line that passes through (8, 12) and is perpendicular to y = 4x - 6 is:
[tex]y - 12 = -\frac{1}{4} (x - 8)[/tex] (point-slope form)
or
[tex]y = -\frac{1}{4}x + 14[/tex] (slope-intercept form)
Learn more here:
https://brainly.com/question/16732089
Which of the following describes the transformation from AABC" -->
AA"B"C"?
A) reflection over X-axis, then translation (0,2)
B) 90 counterclockwise rotation, then reflection over y-axis
C) reflection over y-axis, then rotation 180
D) 90 counterclockwise rotation, then reflection over x-axis
D. 90 counterclockwise rotation, then reflection over x-axis
The store offers a 20% discount A regular price of a t shirt is 18$ what is the discount price
Answer:
$14.40
Step-by-step explanation:
20% off of $18 is $14.4
y=-2x+4y=−2x+4y, equals, minus, 2, x, plus, 4 Complete the missing value in the solution to the equation. ((left parenthesis ,-2),−2)comma, minus, 2, right parenthesis
9514 1404 393
Answer:
(3, -2)
Step-by-step explanation:
Given:
y = -2x +4
Find:
the value of x for y=-2
Solution:
Put the value of y into the equation and solve for x:
-2 = -2x +4 . . . . use -2 for y
-6 = -2x . . . . . . . subtract 4
3 = x . . . . . . . . . .divide by -2
The solution of interest is (3, -2).
21 less than three fifths of a number
Answer:
3/5x - 21
Step-by-step explanation:
3/5x represents the three fifths of a number, and - 21 represents 21 less :)
Please help I never learned this
Answer:
7
Step-by-step explanation:
7x7x7
What is the factorization of the expression below?
16x2 - 25y2
A. (8x-5y)(2x + 5y)
B. (8x - 5y)(2x - 5y)
C. (4x-57)(4x + 5y)
O D. (4x - 5y)(4x - 5y)
Answer:
(4x-5y)(4x+5y)
Step-by-step explanation:
Store A is selling clothes for 20% off. Store B advertises low prices without needing to give sales. A coat you want is sold at both places.
Store A's normal price is $59.99 plus 20% off. Store B's price is $49.99. Which store sells the coat the cheapest and by how much?
A.
Store B by $2.
B.
Store A by $2
C.
Store B by $4
D.
Store A by $4
Answer: I think the answer is b
Step-by-step explanation:
20% off means that there is 80% on which means you pay that 80% so you move the decimal point two spots
80.0% to .80 and multiply store a’s price of 59.99 to get 47.992 round the two in the decimal down making the total price for store a 47.99 and total price for store b 49.99 so store a is the better price by two dollars
What’s the equation of the line that passes through the points (7,-4) and (-7,1)
Answer:
5x +14y = -21
Step-by-step explanation:
One way to write the equation of a line from two points is ...
(y2 -y1)(x -x1) -(x2 -x1)(y -y1) = 0
(1 -(-4))(x -7) -(-7 -7)(y -(-4)) = 0
5(x -7) +14(y +4) = 0
5x +14y -35 +56 = 0
5x +14y = -21 . . . standard form equation of the line
A map of the scale of 1 inch equals 15 miles what is the actual distance between two cities are 2 1/2 inches apart on the map
Answer:
37.5
Step-by-step explanation:
1=15 so 2=30 plus half of 15 (7.5) add, 37.5! :) Hope this helped! Have a good day! ;)
What number is the smallest?
-1 or -0.5
What is the value of x in the equation
8+4 = 2(x-1)?
5
11
2
13
2.
07
Answer:
7
Step-by-step explanation:
8+4=2(x-1) (Given)
12=2x-2 (Distribute and simplify)
14=2x (Addition Property Of Equality)
7=x (Division Property Of Equality)
Name a ratio that is equivalent to 2:3
Answer:
4:6
Step-by-step explanation:
You multiply 2 by 2 and you get 4, if you multiply 3 by 2 you get 6, so that means they are equivalent.
I need help please ASAP!!!!!!
Answer: y = 2x + 14 x is the number of weeks. 14 (b) was his original performance in miles jogged per week. y is the expected performance.
Sketch attached.
Step-by-step explanation: Given John's current performance, it is likely that he was able to jog some number of miles per week, the "b" in slope-intercept form. To calculate:
30 = 2(8) + b
30 = 16 + b
30 - 16 = b
14 = b
Substitute into the slope intercept equation:
y = 2x + b
