Answer:
Mistake in step1Step-by-step explanation:
Given
z + (-0.72) = -2.5Solving in steps
1. ⇒ z + (-0.72) - (-0.72) = -2.5 - (-0.72)2. ⇒ z = - (2.5 - 0.72)3. ⇒ z = - 1.78The student's mistake was adding (-0.72) instead of - (-0.72) or 0.72
Answer:
To solve, you must use the inverse operation. In step 1, -0.72 should have been subtracted from both sides, not added. Otherwise, 0.72 should have been added to both sides, not -0.72.
Step-by-step explanation:
what is the solution (x,y) to the system of equations? x=10 3x+5y=20
Answer:
(10, -2)
Step-by-step explanation:
x = 10 (its given in the problem)
then plug in 10 for x in the second equation and solve for y
3(10) + 5y = 20
30 + 5y = 20
5y = -10
y = -2
so the solution is (10, -2)
Bob and chris share some money in the ratio 2:3.
Bob receives £8
Work ouy how much Chris receives.
Answer:
Chris will receive 4 euros
Answer:
12
Step-by-step explanation:
\angle a∠aangle, a and \angle b∠bangle, b are complementary angles. \angle a∠aangle, a measures 67^\circ67
∘
67, degrees.
What is the measure of \angle b∠bangle, b?
Answer:
Assuming the question is asking for angle B, it measures 23°
Step-by-step explanation:
If angle A = 67°, and angle A and angle B are complementary, then you know they add up to 90°.
angle A + angle B = 90°
67° + Angle B = 90°
Angle B = 23°
Answer:
68
Step-by-step explanation:
right on khan
in this in this equation y equals 14 x what is the constant of proportionality
Answer:
We conclude that the value of the constant of proportionality.
k = 14Step-by-step explanation:
We know that if 'y' varies directly with 'x', we use the equation
y ∝ x
y = kx
where 'k' is called the constant of proportionality.
Given the equation
y = 14x
comparing with the equation
y = kx
Thus,
k = 14
Therefore, we conclude that the value of the constant of proportionality.
k = 14Please help due in 10 min
make 24 using 15,15,9,6
Answer:
24 = (9 * 6) - (15 + 15)
Step-by-step explanation:
Equation = (9 * 6) - (15 + 15)
Follow PEMDAS which in this case multiply 9 x 6
= 54 - (15+15)
Now you need to add the numbers that are in the parenthesis
= 54 - 30
= 24
Hope this helps!
find the slope given the points (1,4) and (5,9)
Answer:
the slope is 5/4
Step-by-step explanation:
use the formula y2 - y1 over x2 - x1, and plug in the coordinates into that
The slope of the line whose points are (1, 4) and (5, 9) will be 1.25.
What is a linear equation?A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
The slope of the line is given as,
m = (y₂ - y₁) / (x₂ - x₁)
The points are given below.
(1, 4) and (5, 9)
The slope of the line is given as,
m = (9 - 4) / (5 - 1)
m = 5/4
m = 1.25
The slope of the line whose points are (1, 4) and (5, 9) will be 1.25.
More about the linear equation link is given below.
https://brainly.com/question/11897796
#SPJ2
z = y + x + m , solve for x
step by step
a satellite makes 4 revolutions of the earth in one day. How many revolutions would it make in 6 ½ days
Answer:
26.
Step-by-step explanation:
1 day/24 hours, makes 4 revolutions.
4 x 6 = 24,
1/2 of 4 = 2.
24+2 = 26.
26 revolutions, if my answer is wrong someone please correct me.
7/12+1/3 show your work and how you got your answer
Answer:
11/12
Step-by-step explanation:
find the lcm of 12 and 3 which is 12.
find a common factor in 12 and 3 and use those factors to multiply with their numerators.
7 * 1 and 1*4 =11
while the denominator or the lcm is 12
thus 11/12
Find the value of c.
The total price of five DVDs (all the same cost) and four movie tickets (all the same cost) is $138, whereas, the total price of two DVDs and five movie tickets is $96. What is the price of one movie ticket? Answer as a number with NO units and NO decimals. Only give the answer to the question asked.
Answer:
Step-by-step explanation:
Let the price of DVDS = x
The price of movie tickets = y
The total price of five DVDs (all the same cost) and four movie tickets (all the same cost) is $138,
= 5x + 4y = $138
The total price of two DVDs and five movie tickets is $96.
2x + 5y = $96
Hence:
5x + 4y = $138.... Equation 1
2x + 5y = $96..... Equation 2
What is the price of one movie ticket?
Elimination method
2y = 204
y = 204/2
y = 102
Which expression is equivalent to 7a -8-12a+4?
A) -9a
B) 31a
C) -5a - 4
D) 19a + 12
Cheryl is buying lace for her dance costume. One foot of lace costs 3 dollars. How much does each amount cost? 3/4
Answer:
2.25 np
Step-by-step explanation:
Cost of one foot lace is $2.25
Given that;Cost of one foot lace = $3
Find:Cost of 3/4 foot lace
Computation:Cost of 3/4 foot lace = [3/4][Cost of one foot lace]
Cost of one foot lace = [3/4][3]
Cost of one foot lace = 9/4
Cost of one foot lace = $2.25
Learn more:https://brainly.com/question/20606949?referrer=searchResults
What is the perimeter of the triangle formed by (-3,1),(-3,5), and (4,1)
Answer:
15
Step-by-step explanation:
Have a nice Day , Hope this helped you I would appreciate it if you could mark my answer brainliest
Besed
2
Which point on the number line represents 4?
0
B
D
to
Ο Α
ОВ
с
OD
Sorry if you don’t understand the words I will put a picture
Answer:
I believe the answer is B
Step-by-step explanation:
good luck
Alexis bought 2 bags of apples for the fruit salad for her party. Each bag contained 13 apples. If she cuts each apple into 8 pieces, how many apple pieces would she have?
Answer:
2 times 13 is 26 and 26 times 8 is 206
Step-by-step explanation:
Runners who achieved a time between 37 and 48 minutes to complete the race were each awarded a silver medal. (c) Calculate an estimate of the number or runners awarded silver medals
Answer:
The data is missing, However the answer is given below
Step-by-step explanation:
The data is missing about the runners and the duration minutes taken to complete the race, However the answer is given below
(3 * 4) + (8 * 3)
12 + 24
36 silver medals would have been awarded to runners.
The data is missing for the runners of the race and the time they took to complete the race, silver medal is awarded for runners who completed race in 37 to 38 minutes.
Find the number of red marbles in a bag containing 54 total red and green marbles, if the ratio of green to red is 4 : 2.
Answer:
36 red marbles.
Step-by-step explanation:
all you need to do is multiply the ratio until you get the right number.
PLEASEEEE HELPPP!!!!
Answer:
A.
Step-by-step explanation:
Solve the following proportion for n.
4/12 = n/72
Answer:
n = 24
Step-by-step explanation:
(4/12)*72 = n
24 = n
i need this pls
-15w(w+15)
Answer:
−15w2−225w hope this helped
Juan Carlos tiene 450 teléfonos móviles cada uno cuesta 30$y vienen 2 personas las 2 personas compran 3 teléfonos ¿cuantos dolares pagaron las 2personas?
Answer:
$90
Step-by-step explanation:
Given that:
Number of mobile phones = 450
Cost per mobile phone = $30
Number of mobile phones purchased = 3
The total cost of 3 mobile phones = amount paid remaining :
(Cost per mobile phone * number of mobile phones purchased)
= $30 * 3
= $90
PLEASEEEEE HELPPPP!
Answer:
option 4
Step-by-step explanation:
put like terms on either side
9x + 2a = 3a - 4x
subtract both sides by 2a
9x = a - 4x
add both sides by 4x
13x = a
divide both sides by 13
x = a/13
please give thanks, hit that heart button :)
Answer:
4.) a/13
Step-by-step explanation:
9x + 2a = 3a - 4x
9x + 4x = 3a - 2a
13x = a
13x/13 = a/13
x = a/13
Find three consecutive integers such that 3 times the first added to the last is 22.
Answer:
5,6,7
Step-by-step explanation:
consetive integers are 1 apart
they are
x,x+1,x+2
3 times the first added to the last is 22
3x+x+2=22
combine like terms
4x+2=22
minus 2 both sides
4x=20
divide both sides by 4
x=5
x+1=6
x+2=7
the numbers are 5,6,7
Answer:
5,6,7
Step-by-step explanation:
hope this helps :)
whats the equation ??
Answer:
the equation is 10 + -3x = y
the quotient of a number y and -3.6 is less than 6.5
(written as an inequality)
Answer:
[tex]\frac{y}{-3.6}[/tex] < 6.5
Whats 22^4 - 2 2/4
Brainlest
Pls helppp
Answer: 234,253.50
Work: I did 22 to the power of 4 first and I got 234256. I subtracted 2 which is 234254, and than took 1/2. So, the answer is 234253.50.
Hurryyyy I’m giving brainliest
Solve for y.
12 = 3y
Answer:
4
Step-by-step explanation:
3y=12 divide both sides by 3
y=4
Answer:
y = 4
Step-by-step explanation:
12 = 3(4)
12 = 12
SYSTEM:
log base root3 of (x-y) = 2
log base 4 of x - log base x of y = 7/6
Answer:
Step-by-step explanation:
SYSTEM:
log base root3 of (x-y) = 2 .... 1
log base 4 of x - log base x of y =7/6...2
From equation 1:
x-y = (√3)²
x - y = 3 ..... 3
From equation 2:
log base 4 of x - log base x of y =7/6
-log base x of 4 - log base x of y = 7/6
log base x of 4^-1 - log base x of y = 7/6
log base x of (1/4) - log base x of y = 7/6
According to law of logarithm
Log base x {1/4 ÷ y} = 7/6
x^7/6 = 1/4y .... 2
From 1, y = x-3
x^7/6 =1/4(x-3)
x^7/6 = 1/(4x-12)
x^7/6(4x-12) = 1
From