Answer:
1/4x+1/4y=?
Step-by-step explanation:
Consider the equations shown: ax + by = ab & 2ax + 3by = 3b Which of these is the value of y in terms of a? Option 1 : y = 3a – 35 Option 2 : y = 2ab – 3b Option 3 : y = 9a – 35 Option 4: y = 3 – 2a
Answer:
Option 4: y = 3 – 2aStep-by-step explanation:
Given the simultaneous equation;
ax + by = ab ......... 1
2ax + 3by = 3b .....2
Required
Express y in terms of a
Using elimination method to eliminate x variable.
eqn 1 * 2 and eqn 2 *1 will give;
2ax + 2by = 2ab
2ax + 3by = 3b
Subtract
2by - 3by = 2ab - 3b
-by = 2ab - 3b
-by = b(2a-3)
-y = 2a-3
multiply through by -1
y = -2a + 3
y = 3-2a
Hence the value of y in terms of a is y = 3-2a
Find the slope of the line that goes through the given points. (-10, -3) and (-7, -9)
Answer:
-2
Step-by-step explanation:
rise over run or, y2-y1/x2-x1
Differentiate between a fixed and movable pulley.
Answer:
Step-by-step explanation:
A fixed pulley consists of a wheel fixed to a shaft and is used in conjunction with a belt to transfer energy to another fixed pulley. A movable pulley consists of a shell, a movable wheel and a rope. Movable pulleys are also know as block and tackle.
Find the slope of the line.
Answer:
The slope is -1. Use the rise over run method for the two given points.
Answer:
m = - 1
Step-by-step explanation:
m = [tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]
( - 3 , 1)
(1 , - 3)
m = [tex]\frac{-3-1}{1 + 3}[/tex] = - 1
m = - 1
A survey showed that 4 out of 5 students own a bicycle. Based on this result, how many of the 800 students in a school own a bicycle?
Answer:
640 students own a bicycle
Step-by-step explanation:
The rate shows that 4 out of 5 students own a bicycle. 4 out of 5 is 80% of the students. Now, we need to find 80% of 800 students.
To do this, we multiply the number of students by .80, which represents 80%.
800 x 0.8 = 640
I Hope That This Helps! :)
Answer:⅘ x 800= 640 640 out of the 800 students in a school own a bicycle.
Step-by-step explanation: ⅘ x 800= 640
THIS IS DUE SOON!!! PLEASE HELP MEEEE!
Explain the Error: Alan says that two lines in the coordinate plane are perpendicular if and
only if the slopes of the lines are m and 1/m. Identify and correct two errors in Alan’s statement.
Answer:
Check the step-by-step
Step-by-step explanation:
To get the perpendicular you need to find the negative reciprocal, therefore, he is wrong as he did not switch the negative/positive sign in m & 1/m. Also, if m is a fraction like 5/3, the reciprocal would not be 1/m, it would be 3/5 as you flip the denominator and numerator.
HELPPPPPPPPPPPPPPP!!! WILL MARK BRAINLIEST!!!
Celeste is making ribbon hair bows to sell for a school fundraiser. She cuts strands of ribbon that are 4 5/8 inches long, and each hair bow requires 3 strands. If a spool of ribbon holds 500 inches of ribbon, how many complete hair bows can she make from one spool?
36
Step-by-step explanation:
4 5/8*3 is 13.875
500 decided by 13.875 is a little over 36, so you can make 36 full ribbons
Answer:36
Step-by-step explanation:
4 5/8*3 is 13.875
a rectangle length is 3 times its width. The area is 27 square inches
PLEASE HELP ME ASAP! ILL GIVE YOU BRAINLEST!
Answer:
13/99
Step-by-step explanation:
First convert the expression, turn 13 into 13/1: 13/1 × 1/99
Next you multiply: 13/1 × 1/99 = 13/99
find hcf of 12 and 16 using division method
Find HCF of 12 and 16 using division method.
Explanation -:Step 1
First we will divide the larger number by the smaller number using long division.Step 2
We will divide till the remainder comes 0.If the remainder is not 0, then make the remainder as the divisor and the divisor as the dividend.Step 3
If the remainder is 0 then the divisor of the last division is the GCF.HCF of 12 and 16 is 4.
[tex] \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \scriptsize{ \sf{spbankingandsscseries}}[/tex]
l.c.m of 21,24,26 what is it plz I need answers
Answer:
LCM of 21,24 and 26 is 2184
Step-by-step explanation:
We need to find LCM of 21,24 and 26
For finding LCM divide the given numbers by a prime number if two of the numbers are divisible by that prime number
2 | 21,24,26
2 | 21,12,13
2 | 21,6,13
3 | 21,3,13
7 | 7,1,13
13 | 1,1,13
| 1,1,1
So, LCM of 21,24 and 26 is: 2 x 2 x 2 x 3 x 7 x 13 = 2184
Solve for 3a:
a + 4 = 4a + 2
3a
Answer:
x = 2/3
2/3*3 = 2
Step-by-step explanation:
Which excerpt from “The Treasure of Lemon Brown” would provide strong evidence that Greg tries to avoid his father at the beginning of the story?
Answer: C
explanation:
i took the test
Answer:
c
Step-by-step explanation:
I took the test on edge
H(x) = 4x-5 and h(x)= 17.
Answer:
5.5
4*5.5=22-5=17
Step-by-step explanation:
You can use the expression 2e+2w to find the perimeter of a rectangle where e is the length and w is the width. Interpret the coefficients of the terms.
Answer: The coefficient of terms is 2 represents length of 2 equal and opposite sides of rectangle.
Step-by-step explanation:
A rectangle is a 4 sides closed quadrilateral where opposite sides are equal .
So , length of one pair of opposite is represented by 'l' [l= length]
Such that sum of these two sides = l+l=2l
The other pair of opposite sides s represented by 'w' [w= width]
Such that sum of these two sides = w+w=2w
Perimeter is the sum of sides.
So, perimeter of rectangle = 2l+2w.
The coefficient of terms is 2 represents length of 2 equal and opposite sides of rectangle.
Find the measure of ∠Z.
45°
75°
105°
Answer:
75
Step-by-step explanation:
X and Y are the same so Y would be 105 as well. The trapezoid as a whole equals 360 degrees. Take 360 and subrtract 105 twice and you'll get 150. Divide 150 by 2 and you'll get 75. W and Z will both equal 75.
Please Help! 66 points and Brainliest!
Two scientists are running experiments testing the effects of a vaccine on different control groups. The results are shown in the graph using the functions f(x) and g(x):
Which statement best describes the graph of f(x) and g(x)?
The graph of g(x) will eventually exceed the graph of f(x).
The graph of f(x) will eventually exceed the graph of g(x).
The graphs will both have their y-intercept equal to 5.
The graphs will both have their y-intercept equal to 2.
Answer:
The graph of g(x) will eventually exceed the graph of f(x).
Step-by-step explanation:
Since f(x) is linear and g(x) is exponential, g(x) will eventually exceed f(x). You can see it start to do so at the top of your graph.
Hope I help :)
Answer:
The graph of f(x) will eventually exceed the graph of g(x)
Step-by-step explanation:
Because g(x) has a steady growth rate, and f(x) is exponential (changes rapidly), f(x) will exceed the graph of g(x). This is can be seen happening at the top of the graph, where f(x) grows higher than g(x) at a faster rate.
What is the formula for calculating the efficiency of a heat engine?
Answer:
StartFraction T Subscript h Baseline minus T Subscript C Baseline over T Subscript h Baseline EndFraction times 100
Step-by-step explanation:
could i have brainliest plz i so close to next rank
Answer:
its a
Step-by-step explanation:
Yesterdays afternoon temperature was 21 °F. It plunged overnight to -3 °F. How many degrees did the temperature drop?
A. 3°
B. 18°
C. 21°
D. 24°
Answer:
the answer is b. 18
please help me solve this
PLZ HELP AND CAN U PLZ EXPLAIN
-7(a – 9) 2-77
Answer please
Answer:
-7 x (2a - 7)
Ari thinks the perfect milkshake has 333 ounces of caramel for every 555 scoops of ice cream. Freeze Zone makes batches of milkshakes with 666 ounces of caramel and 888 scoops of ice cream.
What will Ari think about Freeze Zone's milkshakes?
Answer:
Ari will think that Feeze Zone makes milkshakes with too much caramel.
Step-by-step explanation:
First off I took 3 ounces of caramel to 5 scoops of ice cream, which makes a ratio of 3/5.
Freeze Zone makes milkshakes with 6 ounces of caramel, so I multiplied the 3 and the 5 by two to get 6 ounces of caramel for the ratio.
once you multiply the ratio by two it becomes 6/10 and the milkshakes that Freeze Zone makes are 6/8, so they have more caramel than Ari likes.
Sorry if the explanation is a little confusing, I hope it helped :)
Find the equation of a line that passes through the points (2, 5) and (2, 12) with steps
Answer:
x = 2Step-by-step explanation:
y = mx + b
Unknown:
b = intecept = ?
mx = slope = ?
y = equation = ?
Known:
Coordinates needed
1. Find the slope
(y2 - y1)/(x2 - x1)
(12-5)/(2-2) = undefined
Vertical line
2. Find the intercept
intercept = N/A
x - intercept = 2
Equation:
x = 2Hope this helped,
Kavitha Banarjee
I need help on this question
Evaluate the exponential expression using the order of operations.
(6+3)4
Answer:
36.
Step-by-step explanation:
6 plus 3 is 9 and 9 times 4 is 36, hope this helps.
The radius “r” of a sphere is increasing at a rate of 2 inches per minute. Find the rate of change of the volume when r= 6 and r= 24 inches.
Answer:
3 and 12
Step-by-step explanation:
just multiply 2 x 3 and 2 x 12 and it would give you 6 and 24 :) I hope this help
2 2/3 divided by 1 5/6
ANSWER ASAP
EXPALIN AND BE RIGHT TO BE THE BRAINLIEST
PLS SOLVE guys I need this
