Answer:
a = -10
Step-by-step explanation:
Simplifying
7 + 4(2a + 15) = -13
Reorder the terms:
7 + 4(15 + 2a) = -13
7 + (15 * 4 + 2a * 4) = -13
7 + (60 + 8a) = -13
Combine like terms: 7 + 60 = 67
67 + 8a = -13
Solving
67 + 8a = -13
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '-67' to each side of the equation.
67 + -67 + 8a = -13 + -67
Combine like terms: 67 + -67 = 0
0 + 8a = -13 + -67
8a = -13 + -67
Combine like terms: -13 + -67 = -80
8a = -80
Divide each side by '8'.
a = -10
Simplifying
a = -10
how do you know that 5, 7, 8, 9, 10, and 11 are not factors of 12?
Answer :
Factors of 12 are
[tex] 1 \times 12 \\ 2 \times 6 \\ 3 \times 4. [/tex]
5 multiplied by any number can never give 12 . Multiples of 5 are [tex]5 \: 10 \: 15 \: 20[/tex]7 multiples are [tex]7 \: 14 \: 21[/tex]Same applies for all the listed numbersA man buys 12 shirts at $24.69 each. There is a 6% sales tax. Find his bill.
Answer:
$26.48
Step-by-step explanation:
First you find out what 6 percent OF 24.99 dollars is,
OF stands for multiplication
so multiply 6 percent of 24.99
= 0.06 x 24.99
= $1.4994 (That's a point not a comma, so it's around 1 dollar)
Then once you have found the sales tax which we found up there, you add it to the total cost of the shirts. (If it was a discount you would subtract it because it's a discounted price which means it's less - just another tip :) )
Anyway so you add it to the price,
24.99 + 1.49
= $26.48
Hope this helps! :)
Identify the variables in the expression 4mn + 6m - 3
Hey there! I'm happy to help!
A variable is a letter or symbol used to represent an unknown number.
We see two letters here: m and n. Therefore, those are the variables.
Have a wonderful day! :D
R = {(-3, -2), (-3, 0), (-1, 2), (1, 2)}
Select all numbers that are in the domain.
Answer:
-3 -3 -1 1
Step-by-step explanation:
give me five stars and ill tell you
Answer: Answer: -3,-1, and 1.
Step-by-step explanation: You are given the relation R = {(-3, -2), (-3, 0), (-1, 2), (1, 2)} The domain of the relation are all possible inputs and the range of the relation are all possible outputs. So, the inputs are : -3,-1,1; and the outputs are : -2,0,2. As a result, the domain is : -3,-1,1; and the range is : -2,0,2.
Is is 1.36 as a improper fraction
Answer:
yes, it is a improper fraction.
Step-by-step explanation:
1.36=34/25
find the missing value 3/8 equals y over 24
Answer:
Step-by-step explanation:
3(58 - 6) - 2(4x + 5)?
Which expression is equal to
Answer:
-8x + 146
Step-by-step explanation:
Step 1: Write out expression
3(58 - 6) - 2(4x + 5)
Step 2: Parenthesis
3(52) - 2(4x + 5)
Step 3: Multiply
156 - 2(4x + 5)
Step 4: Distribute
156 - 8x - 10
Step 5: Combine like terms (constants)
-8x + 146
what is the missing measure?
Answer:
the missing measure is 129° all around is 360° half of 360° is 180°, 180° is one line so if you subtract 51° from 180° you get 129° im not so good at explaining but i hope you understand
I need help please I don’t get it
Answer: left 9 and up 6
Step-by-step explanation:
just if it’s in the bars it’s left if + and on the outside its up if +
Which quadratic has a maximum?
a. y = x2 + 2x + 2
b. y = - 2x² – 3x + 5
c. y = 0.5(x – 3)2 + 1
d. y = 2x + x2 - 1
Answer:
b. y = - 2x² – 3x + 5
Step-by-step explanation:
If you check on a graphing calculator or desmos, you will see that the parabola opens down, so there is a highest point, or a maximum. You can also know that without a calculator by looking at the sign in front of x. Since answer choice b is the only one with a negative in front (meaning that the parabola opens down giving you a maximum) then you will know that that's the correct answer.
Can someone teach me how to do this????
Answer:
x = 12
Step-by-step explanation:
For this problem it is important to note that the sum of the two unknown angles' measurements is equivalent to the given known angle measurement as implied by the drawing. With this in mind let's write our givens:
m<CGF = 10x - 10
m<HGC = 3x + 10
m<HGF = 156
So now let's form our equation to represent the drawing:
m<CGF + m<HGC = m<HGF
And now let's solve the equation to find the value of the x.
m<CGF + m<HGC = m<HGF
( 10x - 10 ) + ( 3x + 10 ) = 156
10x - 10 + 3x + 10 = 156
13x = 156
x = 12
Hence, our value for x is 12.
Cheers.
Solve the inequality x - 5.3 > -12.8
Answer:
[tex] x > - 7.5[/tex]
Step-by-step explanation:
[tex]x - 5.3 > - 12.8 \\ x > - 12.8 +5.3 \\ x > - 7.5[/tex]
The Earth is approximately a sphere of diameter 12742 km. The surface area of a sphere is given by the formula A = 4π r2 Calculate the surface area of the Earth. Give your answer in metres squared and in standard form. Answer ………………………….
Answer:
Don't know....
follow me and mark me brainliest
Quadrilateral JKLM is rotated 90° clockwise about the origin to produce Quadrilateral J'K'L'M'. is m 60 80 100 120
Answer:
Option (1)
Step-by-step explanation:
This question is incomplete; Find the complete question in the attachment.
Quadrilateral JKLM is rotated 90° clockwise to produce quadrilateral J'K'L'M'.
By this transformation complete quadrilateral JKLM rotates from quadrant 1 to quadrant 4 and both will be similar.
But there will be no change in the given angles.
Therefore, m∠M = m∠M' = 60°
Option (1) will be the correct option.
what fraction of a day is 5 hours 20 minute
One day is 24 hours.
Since there are 60 minutes in one hour there are 1440 minutes in one day.
5 hours 20 minutes is the same as 300+20, 320 minutes.
So 5hr 20min is [tex]\frac{320}{1440}[/tex] of the day.
(we can simplify that to [tex]\frac{2}{9}[/tex])
:)
Solve the 2 problems pleaseeeee solve for x
Answer:
38.) is x = 11/4 and the one bellow it is x=-5
Step-by-step explanation:
A Rectangle with sides 100m and 50m. Person B and Person A start walking in the opposite direction at the same point with velocities 5m/s and 4m/s respectively. Person A starts walking 3 seconds after person B. How long would it take for them to meet on the other side of Rectangle
Answer:
It takes takes them 31.67 secs to meet after Person A starts walking
OR
34.67 secs after Person B starts walking
Step-by-step explanation:
First, we will find the perimeter of the rectangle
From,
Perimeter of rectangle = 2 ([tex]l[/tex] + [tex]b[/tex])
Where [tex]l[/tex] is the length
and [tex]b[/tex] is the breadth
From the question, [tex]l[/tex] = 100m
and [tex]b[/tex] = 50m
Hence,
Perimeter of the rectangle = 2 (100+50)
= 2(150) = 300m
Hence, the perimeter of the rectangle is 300m
This is the total distance that will be covered by both persons by the time they meet.
Let the distance covered by person A be [tex]S_{1}[/tex]
and the distance covered by person B be [tex]S_{2}[/tex]
We can write that
[tex]S_{1}[/tex] + [tex]S_{2}[/tex] = 300m
Velocity of person A, [tex]V_{A}[/tex] = 4 m/s
and velocity of person B, [tex]V_{B}[/tex] = 5 m/s
From the question, Person A starts walking 3 seconds after person B,
This means, if person A spends [tex]t[/tex] secs before they meet, then person B would spend (3 + [tex]t[/tex]) secs.
For Person A,
Velocity = 4 m/s
Time = [tex]t[/tex] secs
Distance = [tex]S_{1}[/tex]
From,
[tex]Velocity = \frac{Distance}{Time}[/tex]
Then,
[tex]Distance = Velocity \times time[/tex]
[tex]S_{1} = 4 \times t[/tex]
[tex]S_{1} = 4t[/tex] ...... (1)
For Person B
Velocity = 5 m/s
Time = (t + 3) secs
Distance = [tex]S_{2}[/tex]
Also, from
[tex]Distance = Velocity \times time[/tex]
[tex]S_{2} = 5 \times (3+t)[/tex]
[tex]S_{2} = 5(3+t)[/tex] ...... (2)
Recall that, [tex]S_{1}[/tex] + [tex]S_{2}[/tex] = 300m
Then, [tex]S_{2}[/tex] = 300m - [tex]S_{1}[/tex]
We can then write that,
300m - [tex]S_{1}[/tex] [tex]= 5(3+t)[/tex]
Then,
[tex]S_{1} = 300 - 5(3+t)[/tex] ..... (3)
Equating equations (1) and (3), we get
[tex]300 - 5(3+t) = 4t[/tex]
[tex]300 - 15 -5t = 4t\\9t = 285\\t = \frac{285}{9}\\[/tex]
[tex]t = 31.67 secs[/tex]
This is the time spent by Person A
Hence, it takes takes them 31.67 secs to meet after Person A starts walking OR
34.67 secs after Person B starts walking
Answer:
I mistakenly rated Abdulazeez10's answer 2 stars because I thought he mixed up his variables, but I was actually the one who mixed up my variables.
Step-by-step explanation:
Sorry, Abdulazeez10 :( I can't change my rating, but just so everyone else knows, his answer is 100% correct!
How many zero arin the product of any whole. number less than 10 and 500
Answer:
Hay un máximo de tres ceros en el producto de un número distinto de cero cero menor que 10 y 500
Para poder ver esto, la forma más fácil para resolver este problema es multiplicar todos los números entre 1 y 9 por 500, es decir:
01*500 = 500
2*500 = 1.000
3*500 = 1.500
4*500 = 2.000
5*500 = 2.500
6*500 = 3.000
7*500 = 3.500
8*500 = 4.000
9*500 = 4.500
Como vemos, si multiplicamos a 500 por cualquier número par, entonces obtenemos un número con tres ceros, mientras que si este es impar solamente obtenemos dos ceros
dame coronaa
$140 is 3.5% of what amount?
Answer:
4000
Step-by-step explanation:
140$ = 3.5 , divide by 3.5 on both sides
1% = 40$
100% = 4000$
Answer:
[tex]\huge\boxed{\$4,000}[/tex]
Step-by-step explanation:
[tex]p\%=\dfrac{p}{100}\\\\3.5\%=\dfrac{3.5}{100}=0.035\\\\3.5\%\ \text{of}\ x\ \text{is}\ \$140\\\\0.035\cdot x=140\qquad\text{divide both sides by 0.035}\\\\\dfrac{0.035\cdot x}{0.035}=\dfrac{140}{0.035}\\\\x=4,000[/tex]
Given that f(x)=-3x+9, what is f(4)?
Answer:
F(4) = -3
Step-by-step explanation:
First, you would plug in 4 for x. PEMDAS, so you would multiply -3 and 4, giving you -12. Then add 9, which gives you -3.
Answer:
Step-by-step explanation:
f(4)= -3*4+9
f(4)=-12+9
f(4)=-3
There are 3 juice and 1 water. How many more students like juice than water
Please help !!
Determine the x and y value of each
coordinate A, B, C, D
Answer should look like this: (x,y)
Answer:
a(-3,-2)
b(-1,2)
c(3,2)
d(5,-2)
Step-by-step explanation:
a(-3,-2)
b(-1,2)
c(3,2)
d(5,-2)
Which numbers are solutions of the inequality 3x – 4 > 5?
Answer:
X>3
Step-by-step explanation:
Inequality form:
x>3
Hope this helped there wasn't much information sorry
A phone company charges for service according to the formula: C ( n ) = 30 + 0.02 n , where n is the number of minutes talked, and C is the monthly charge, in dollars.
The slope in this equation is: _________
The vertical intercept in this equation is: ________
The slope's units are:
a. Dollars
b. Minutes
c. Minutes per Dollar
d. Dollars per Minute
Answer: Its 58382027.038
Step-by-step explanation:
what is the simplified form of the ratio 9:18
Answer:
1:2
Step-by-step explanation:
:)
Simplify the expression: –3(3 + 2n)
Answer:
-9 - 6n is the answer
Steps to solve:
-3(3 + 2n)
~Distribute
-9 - 6n
Best of Luck!
A plane from Waco to Dallas travels 85 miles. It took the plane 30 minutes to complete the trip. What is the plane’s average speed to the nearest hundredths of a m/hr
Answer
the plane will travel 170 miles per hour because you double the amount it already went because you had to double the minutes. so the answer is 170
Step-by-step explanation:
The plane traveled 85 miles in 30 minutes.
1 hour is 60 minutes.
30 minutes x 2 = 60 minutes ( 1 hour)
85 miles x 2 = 170 miles in one hour
The speed is 170 miles per hour
Gabriel is signing up for a gym membership with a one-time fee to join and then a
monthly fee to remain a member. The the monthly fee is $40 and the one-time
joining fee is $100. Write an equation for C, in terms of t, representing the total cost
of the gym membership over t months.
Answer: C =
Submit Answer
I
attempt 1 out of 2
Answer:
[tex]C= 40t+100[/tex]
Step-by-step explanation:
In this exercise, we want to model an equation to represent the cost that Gabriel will when registering with a gym.
from the given information, we can model the cost after the equation of a straight line
y= mx+c
so "C" is the cost, while $40 is a fee dependent on "t" the number of months subscribed
and $100 is the joining fee, which is a constant term
[tex]C= 40t+100[/tex]
solve this question
Answer:
80
Step-by-step explanation:
Initial ratio:
Teachers to students
1 : 15
Ratio after:
Teachers to students
3 : 40
The number of students did not change, so we can make the students of the initial ratio and the students of the ratio after the same.
1 : 15 = 8 : 120
3 : 40 = 9 : 120
120 units = 1200
1 unit = [tex]\frac{1200}{120} =10[/tex]
Initial teachers = 8 units = [tex]8*10=80[/tex]
pleaseee helppp meee.
Answer:
∠BOC = 45
Step-by-step explanation:
∠BOC + ∠AOB = ∠AOC ----------eq.1
where:
∠AOC = 96
∠BOC = 8x - 67
∠AOB = 9x - 75
find: ∠BOC
plugin values into the eq.1
∠BOC + ∠AOB = ∠AOC
8x - 67 + 9x - 75 = 96
8x + 9x - 67 - 75 = 96
17x = 96 + 67 + 75
17x = 238
x = 238 / 17
x = 14
plugin x into ∠BOC = 8x - 67
∠BOC = 8x - 67
∠BOC = 8(14) - 67
∠BOC = 45
