Answer:
x=1
Step-by-step:
Since they are all decimals, you can change it to 18x+28=25x+21.
-18x -21 -18x -21
is equal to: 7 = 7x
and then 1 = x
Just the first 3 please. Will give brainliest. (Easy)
Answer:
1.) 81
2.) 1/4
3.) 2.25
Step-by-step explanation:
divide in half then square it
Answer:
wut
Step-by-step explanation:
dat dont like like english
What is (5v+5)–(3v+2)
Answer:
2v + 3
Step-by-step explanation:
Rewright the equation and distribute the negative symbol ( 5v + 5 - 3v - 2 )
Next, combine like terms and you will get 2v + 3.
Answer:
2v + 3
Step-by-step explanation:
Remove the parentheses and combine like terms
5v-3v = 2v
5 - 2 = 3
-7x + 3=5x - 9 find x and y
Answer:
1
Step-by-step explanation:
-7x+3=5x-9
-7x-5x=-9-3
-12x=-12
x=12÷12
x=1
Answer:
x= 1
I don't "y" sorry
Two cyclists are 7 miles apart when they begin biking away from each other in opposite directions. The speed of the first cyclist is 12 miles per hour. The speed of the second cyclist is b miles per hour greater than the speed of the first cyclist.
How many miles does the second cyclist bike in 45 minutes?
Answer:
The distance covered by the second cyclist in 45 minutes is (3/4·b + 9) miles
Step-by-step explanation:
The given parameters are;
The distance between the two cyclist when they begin biking away from each other = 7 miles
The first cyclist's speed = 12 miles per hour
The second cyclist's speed = 12 + b miles per hour
Therefore, we have;
The equation for distance covered, d = Speed × Time
The distance covered by the second cyclist in 45 minutes, [tex]d_{45 \ minutes}[/tex] is given as follows;
45 minutes = 3/4 hour
[tex]d_{45 \ minutes}[/tex] = (12 + b) × 3/4 = (3/4·b + 9) miles
The distance covered by the second cyclist in 45 minutes = (3/4·b + 9) miles.
Answer:
The distance covered by the second cyclist in 45 minutes is (3/4·b + 9) miles
Step-by-step explanation:
The given parameters are;The distance between the two cyclist when they begin biking away from each other = 7 milesThe first cyclist's speed = 12 miles per hourThe second cyclist's speed = 12 + b miles per hourTherefore, we have;The equation for distance covered, d = Speed × TimeThe distance covered by the second cyclist in 45 minutes, is given as follows;45 minutes = 3/4 hour = (12 + b) × 3/4 = (3/4·b + 9) milesThe distance covered by the second cyclist in 45 minutes = (3/4·b + 9) miles.
Juan is working two summer jobs, making $12 per hour babysitting and making $16 per hour lifeguarding. In a given week, he can work at most 17 total hours and must earn at least $240. If Juan worked 3 hours babysitting, determine all possible values for the number of whole hours lifeguarding that he must work to meet his requirements. Your answer should be a comma separated list of values. If there are no possible solutions, submit an empty answer.
\text{Let }b=
Let b=
\,\,\text{the number of hours babysitting}
the number of hours babysitting
\text{Let }l=
Let l=
\,\,\text{the number of hours lifeguarding}
the number of hours lifeguarding
\text{\textquotedblleft at most 17 hours"}\rightarrow \text{17 or fewer hours}
“at most 17 hours"→17 or fewer hours
Use a \le≤ symbol
Therefore the total number of hours worked in both jobs, b+lb+l, must be less than or equal to 17:17:
b+l\le 17
b+l≤17
\text{\textquotedblleft at least \$240"}\rightarrow \text{\$240 or more}
“at least $240"→$240 or more
Use a \ge≥ symbol
Juan makes $12 per hour babysitting, so in bb hours he will make 12b12b dollars. Juan makes $16 per hour lifeguarding, so in ll hours he will make 16l16l dollars. The total amount earned 12b+16l12b+16l must be greater than or equal to \$240:$240:
12b+16l\ge 240
12b+16l≥240
\text{Plug in }\color{green}{3}\text{ for }b\text{ and solve each inequality:}
Plug in 3 for b and solve each inequality:
Juan worked 3 hours babysitting
\begin{aligned}b+l\le 17\hspace{10px}\text{and}\hspace{10px}&12b+16l\ge 240 \\ \color{green}{3}+l\le 17\hspace{10px}\text{and}\hspace{10px}&12\left(\color{green}{3}\right)+16l\ge 240 \\ l\le 14\hspace{10px}\text{and}\hspace{10px}&36+16l\ge 240 \\ \hspace{10px}&16l\ge 204 \\ \hspace{10px}&l\ge 12.75 \\ \end{aligned}
b+l≤17and
3+l≤17and
l≤14and
12b+16l≥240
12(3)+16l≥240
36+16l≥240
16l≥204
l≥12.75
\text{The values of }l\text{ that make BOTH inequalities true are:}
The values of l that make BOTH inequalities true are:
\{13,\ 14\}
{13, 14}
\text{(the final answer is this entire list)}
(the final answer is this entire list)
Stock was selling at $25 a share. A month later it was selling at $30 a share what is the percent increase
Answer: 20%
Step-by-step explanation:
What would this be ?
==============================================
Explanation:
If f(x) is an even function, then,
f(-x) = f(x)
for all x in the domain
Based on that, we can say f(-3) = f(3)
So,
y = -2*f(3) - 3*f(-3)
y = -2*f(3) - 3*f(3)
y = -2*(-5) - 3*(-5)
y = 10 + 15
y = 25
If f ( x ) = 7 ( x − 1 ) + 8 f(x)=7(x−1)+8 , what is the value of f ( 1 ) f(1) ?
Answer:
8
Step-by-step explanation:
f(1) is another notation for x = 1
so we’ll plug in 1 for x
f(1) = 7((1) -1) +8
f(1) = 7(0) +8
f(1) = 0 +8
f(1) = 8
how do I do this problem?
Answer:
14.9m
Step-by-step explanation:
Say that the centre point is O, the letter to make it easier to explain.
The angle DOB is equal to the angle AOE because they're vertically opposite
We also know that angle DOB = 52 + 90 = 142, so angle AOE = 142
To work out the length of the segment, it would be to find the circumference and multiply with the angle over 360:
πd × [tex]\frac{142}{360}[/tex]
(where d = diameter)
we know that the diameter is 12m so we can input this:
12π × [tex]\frac{142}{360}[/tex] = 14.87020523
to the nearest tenth = 14.9m
Ms. Figgs asked 25 students in her 7th grade homeroom to select their favorite cookie. The results are recorded in the table below. Based on the results, how many students will NOT select chocolate chip as there favorite cookie, if there are 250 students in the seventh grade? If you can answer ASAP
Answer:
130
Step-by-step explanation: 13 is 52 percent of 25 and 130 is 52 percent of 250 :) hope this helps
uhm mainly 11 and 12 but if u solve all of them I’ll give u brainliest
Question 11)
Answer:
[tex]\log _2\left(63\right)-\log _2\left(9\right)=\log _2\left(7\right)=2.80[/tex]
Step-by-step explanation:
Given the expression
[tex]\log _2\left(63\right)-\log _2\left(9\right)[/tex]
[tex]\mathrm{Apply\:log\:rule}:\quad \log _c\left(a\right)-\log _c\left(b\right)=\log _c\left(\frac{a}{b}\right)[/tex]
[tex]\log _2\left(63\right)-\log _2\left(9\right)=\log _2\left(\frac{63}{9}\right)[/tex]
[tex]=\log _2\left(\frac{63}{9}\right)[/tex]
[tex]\mathrm{Divide\:the\:numbers:}\:\frac{63}{9}=7[/tex]
[tex]=\log _2\left(7\right)[/tex]
[tex]=2.80[/tex]
Therefore,
[tex]\log _2\left(63\right)-\log _2\left(9\right)=\log _2\left(7\right)=2.80[/tex]
Question 12)
Answer:
[tex]\log \:_2\left(3\right)+\log \:_2\left(15\right)-\log \:_2\left(9\right)=\log \:_2\left(5\right)=2.32[/tex]
Step-by-step explanation:
Given the expression
[tex]\log _2\left(3\right)+\log _2\left(15\right)-\log _2\left(9\right)[/tex]
[tex]\mathrm{Apply\:log\:rule}:\quad \log _c\left(a\right)+\log _c\left(b\right)=\log _c\left(ab\right)[/tex]
[tex]\log _2\left(3\right)+\log _2\left(15\right)=\log _2\left(3\cdot \:15\right)[/tex]
[tex]=\log _2\left(3\cdot \:15\right)-\log _2\left(9\right)[/tex]
[tex]\mathrm{Multiply\:the\:numbers:}\:3\cdot \:15=45[/tex]
[tex]=\log _2\left(45\right)-\log _2\left(9\right)[/tex]
[tex]\mathrm{Apply\:log\:rule}:\quad \log _c\left(a\right)-\log _c\left(b\right)=\log _c\left(\frac{a}{b}\right)[/tex]
[tex]\log _2\left(45\right)-\log _2\left(9\right)=\log _2\left(\frac{45}{9}\right)[/tex]
[tex]=\log _2\left(\frac{45}{9}\right)[/tex]
[tex]\mathrm{Divide\:the\:numbers:}\:\frac{45}{9}=5[/tex]
[tex]=\log _2\left(5\right)[/tex]
[tex]=2.32[/tex]
Therefore,
[tex]\log \:_2\left(3\right)+\log \:_2\left(15\right)-\log \:_2\left(9\right)=\log \:_2\left(5\right)=2.32[/tex]
somebody helpppp plzz
Answer:
2
Step-by-step explanation:
-2^2=4
4*1/2=2
What is the value of the expression when a = 5, b = 4 , and c = 6?
Answer:what is the expression??
Step-by-step explanation:
Answer:
what is the expression?
Step-by-step explanation:
ILL MARK U BRAINLIEST!!!
Answer:
1. 6/25
Step-by-step explanation:
30/125 wanted Steelers which simplifies to 6/25
Answer:
D.) 6/25
Step-by-step explanation:
125 students were surveyed
30 voted steelers
30/125 = 0.24
24%
or
6/25
Mrs. Miller is cutting 2 pizzas into eighths for students. How many students will get a 1/8 size slice of pizza?
Answer:
16 students
Step-by-step explanation:
2 pizzas cut into 8ths, 8 slices plus 8 slices = 16
Solve for a.
5.4 = a - (-1.8)
a =
Answer:
A = 3.6
Step-by-step explanation:
5.4 = a - (-1.8)
5.4 = a + 1.8
subtract 1.8 from both sides
3.6 = a
Hope this helps. Pls give brainliest.
Answer:
a = 3.6
Step-by-step explanation:
5.4=a−(−1.8)
Step 1: Simplify both sides of the equation.
5.4=a+1.8
Step 2: Flip the equation.
a+1.8=5.4
Step 3: Subtract 1.8 from both sides.
a+1.8−1.8=5.4−1.8
a=3.6
help please!!
Solve the following problem and enter the answer in the space provided. If there is no solution, type in "no solution." If the result is all real numbers, type in "all real numbers" into the answer space.
6x+1=8x+3
Answer:
1 - 3 = 2/ 6x +2=8x 8x-2 = 6x divided by 6x = 1x so there but if 1 to ur math is no solution then theres no solution but if there is a solution ur welcome! 5*
Which Lines Are Parallel if M<4 = m<5? Justify Your Answer.
Can you guys help i’m kinda struggling
Answer:
C.) SSA
Step-by-step explanation:
This took me awhile to figure out if the angles in between are equal
But all the sides that are congruent make up several smaller triangles that are congruent and then use CPCTC to use angles of the smaller triangles to show the angles are equal
The number of known elements changed very rapidly over a 150-year period.
There were 62 known elements in the mid-1800s. How many known elements
(total) are there today?
A.98 b.111 C.118 D.125
Answer:
118
Step-by-step explanation:
find the unit rate for 12 haircuts in 4 hours
Answer:
it would be 3 haircuts in a hr.
Step-by-step explanation:
12 divided by 4
have a good day,good luckk
Answer:
The unit rate of 3 haircuts per hour
Step-by-step explanation:
unit rate for 12 haircuts in 4 hours
Now,
12 ÷ 4 = 3
Thus, The unit rate of 3 haircuts per hour
-TheUnknownScientist
Mindy makes 6 dozen chocolate chip cookies.
She takes 20 minutes to make all the cookie batter, and then she puts the cookies in the oven for 8 minutes per dozen.
To find how much time Mindy takes to make all the cookies, identify the hidden question.
is the fraction 12/98 a perfect square??
Answer:
No
Step-by-step explanation: By dividing 12/98 you would get a decimal(0.12244897959) by this not being a whole number it can not be a perfect square.
A test has ____ total questions for a total of ____ points. There are two question types: a true/false question is worth ____ points and a multiple choice question is worth ____ points.
Answer:
50-100-1-3
.......(?)
Answer:
I AM CONFUSION
Step-by-step explanation:
que es la recta numerica
Answer:
Un ejemplo de una recta numérica es lo que un estudiante de matemáticas puede usar para encontrar la respuesta a las preguntas de suma y resta. Una línea recta, teóricamente que se extiende hasta el infinito en direcciones tanto positivas como negativas desde cero, que muestra el orden relativo de los números reales.
explanation:
what is the number line
An example of a number line is what a math student can use to find the answer to addition and subtraction questions. A straight line, theoretically extending to infinity in both positive and negative directions from zero, that shows the relative order of the real numbers.
2) Maddie wants a Nintendo Switch bundle. It is on sale for $320, and her parents said that they would pay 60% of the cost if Maddie pays the rest. How much will Maddie have to pay?
Answer:
Wow, my name is maddie and i have a Nintendo switch. Lolll ok but the answer is:
$192!
Step-by-step explanation:
60 percent of 320 is the same as 60 per hundred of 320. We can therefore make the following equation:
60/100 = X/320
To solve the equation above for X, you first switch the sides to get the X on the left side, then you multiply each side by 320, and then finally divide the numerator by the denominator on the right side to get the answer. Here is the work to illustrate:
60/100 = X/320
X/320 = 60/100
X*320/320 = 60*320/100
X = 19200/100
X = 192
The work above shows the long way to explain how to calculate 60 percent of 320 in order to give you a foundation and better understanding of how to calculate percentage. In the future, you could use this simplified formula:
(Y * P)/100
In our problem "What is 60 percent of 320?", Y is 320 and P is 60:
(320 * 60)/100 = 192
And once again you see that the answer is 192.
(credits to the percentage calculator) LOL
Have an amazing day luvs <3 ❤
Which reason justifies the statement below? “If CD = EF, then CD≅ EF ”
A. Definition of Congruence
B. Reflexive Property
C. Symmetric Property
D. Definition of Midpoint
Answer:
A. definition of congruence
i’m so stressed out over this. please help me solve these
Answer:
8x + 406y - 21-6m - 186 - 6z-5x - 1-x - 4ab - 6b7a(3b - 2c + 4)4x + 1[tex]\frac{x}{6} - 4[/tex] 1 - 4wx - 42k - 584x + 246 - 37m25v + 16c - 395p + 42-wx + 3I hope this helps!
Calculate the new perimeter using a scale factor of 1/5
PLEASE HELP ASAP
Answer:
16
Step-by-step explanation:
P = (15 + 20 + 45) × (1/5) = 16
Evaluate f(7) *
f (x) = –2x² + 4
Answer:
x= 1.3
Step-by-step explanation:
You have to plug in 7 so it will look like:
f(x) = -2x² + 4
7(x) = -2x² +4
now what you have to do is multiply 7 by x which will get you
7x = -2x² + 4
now because you have that you want to multiply -2 twice because you have that ²
7x = 4x +4
now you want to move the 4x and you can do that by doing the inverse operation and in this case since its a positive 4 you may want to subtract 4x from 4x and 7x
3x=4
now you want to divide 4 from 3 and you get 1.333333333333333
hope this helps
