Step-by-step explanation:
Let us assume p is the number of psychology books and b is the number of biology textbooks.
set up first equation:
we know that the total number of books sold was 393
p+b=393
set up second equation:
we know that there were 79 less biology book sold that psychology so...
p = b + 79
subsitute p in the first equation to solve for b
solve value for p
Ryan bought a racing bike for $4,000 this month. Its value depreciates by
2% every year. What is the value of the bike 4 years from now? *
Which equation has the same solution as x2 + 4x – 13 = 5?
Answer:
x=4
Step-by-step explanation:
solve 4x² - 3x - 2 = 0
give your solutions to 3 significant figures
Answer:
x=1.18
x=0.425
Step-by-step explanation:
none needed <3
WIll MARK BRAINLIST IF YALL DO FAKE ANSWER YALL WILL BE REPORTED!!!!!!!!!!!!!!!!!
Answer:
f(7)=-196
Step-by-step explanation:
f(7)=-3(7)^2-7(7)
f(7)=-3(49) -49
f(7)= -147 -49
f(7)=-196: ANSWER
Hope this helps! This is also written in the comment too!
Expand the following expression - 2(3x-7)
Answer:
-6x+14
Step-by-step explanation:
Simplemente debes
multiplicar
Gaste el 60% de lo que no gasté: del resto perdí el 40% de lo que no perdí. De lo que me quedaba no ahorré 50% más de lo que ahorré. Si lo que ahorré es de S/. 70: ¿Cuánto tenia al principio?
need help with this please
Answer:
where is your question friend...
Gavin took a taxi home from the airport. The taxi fare was $7 plus an additional $0.65 per mile.
Gavin gives the driver a $3 tip when he arrives home. If Gavin paid a total of $62.65 with the tip,
what is the distance between the airport and Gavin's house?
Answer:
81
Step-by-step explanation:
$62.65-$7-$3=$52.65
Distance->52.65÷0.65=81
whats a reasonable estimate for 529 divided by 23 ( explain your anwser )
Step-by-step explanation:
First you divide 529 and 23. You can divide 5w9 by 23 in a fraction like this 529/23 on to Desmos scientific calculator or just 529÷23 on a calculator. If it is a decimal, round it up if the tenth, hundredth, or thousandth is 5, 6, 7, 8, 9 or round down if the number is 4, 3, 2, and 1. The answer to 529÷23 is 23. And if you estimate it, it'll be 20. The next part may be a bit confusing but if you estimate 23, you'll get 25.
Then you estimate 529 and 23, you'll get 530 and 20. And if you divide them, you'll get 26.5. And if you estimate that, you'll get 27. So that means is 2 or 7 off from the estimated from the equation 529÷23. So that means the reasonable answer is probably 25 or 27.
Tell me if I'm right or not, and I'm sorry if I'm wrong because I don't know what answer I explained in the two paragraphs I wrote is right or wrong.
The value of (100%10)*5 is
0
10
50
500
Answer:
50
Step-by-step explanation:
the step
100% * 10 =10 as 100% = 1
then mulitply 10 *5 = 50
Help me please!
I don’t get this question
Supplementary angles are angles that when you add them, make 180 degrees, which is a straight line. They are not to be joined together but added. So if one measures 90 degrees more than another, well what's the answer? I hope this helps.
can some help me
out with this problem please ?
Answer:
Step-by-step explanation:
If you are looking for the value of x, use the Pythagorean Theorem.
x² = 58² - 40² = 1764
x = √1764 = 42
Answer: 42cm
Step-by-step explanation:
Using the formula
(Hypotenuse^2)= (Opposite^2) + (Adjacent^2)
Hypotenuse= 58cm
Opposite= 40cm
Adjacent= x
Therefore
(58^2)= (40^2) + (x^2)
3364= 1600 + x^2
3364-1600= x^2
1764= x^2
x= 1764^1/2
x= 42
Adjacent= 42cm
What is the result when 12x2-7y2 is added by -10x2+y2?
A.2x2-6y2
B.2x2+6y2
C.-2x2-8y2
D.-2x2+8y2
Answer:
A
Step-by-step explanation:
12x² - 7y² - 10x² + y² = 12x² - 10x² - 7y² + y²
= (12 - 10)x² + (-7 + 1)y²
= 2x² + (-6y²)
= 2x² - 6y²
please I really need help
Answer
Step-by-step explanation: a:false b:true c:true d:true
Which expression will give you the phase shift when the standard form is f(x)=asin(bx+c)+d
A. |a|
B. 2⁄|b|
C. -c/b
D. d
Answer:
1. A and C
2. C
3. B and E
4. B and C
Step-by-step explanation:
I just took the test 100%
HELP ME ASAP!!!!!!!!!!!!!!!
See question attached.
THE CORRECT ANSWER GETS THANKS, A STAR RATING OF EXCELLENT AND BRAINLIEST!!!!!!!!!!!!!!!!! GOOD LUCK!!!!!!!!!!
Answer:
-1
Step-by-step explanation:
First input = 4
Then we subtract 7 = 4 - 7 = -3
After that we divide 3 = - 3 ÷ 3 = -1
Hence, the output is -1 (Ans)
I'm stuck on this, does anyone know the solution?
The question is:
Calculate (2p - 4q) 2 when p= - 8 and q = - 3.
Answer:
-14 or -28
Step-by-step explanation:
2x-8=-16
4x-3=-12
-16-12=28
-16-(-12)=-14
(i would go with -14)Help me and i will give away 50 points
Answer:
Step-by-step explanation:
PLEASE HELP ITS DUE AT MIDNIGHT
Step-by-step explanation:
[tex]\frac{9.00 - 7.50}{7.50} \times 100\% = 20\% \: increase[/tex][tex] \frac{6.50 - 5.00}{5.00} \times 100\% = 30\% \: increase[/tex][tex] \frac{4.50 - 2.00}{2.00} \times 100\% = 125\% \: increase[/tex][tex] \frac{2.00 - 2.50}{2.50} \times 100\% = - 20\%[/tex]In order to get the increase or decrease, we need to get the difference of the two prices first. Then, pick a "reference year".
From the calculations, notice how I made the earlier years as my reference points. If the calculations produced positive results, therefore, it has increased. If it produced a negative results, from the reference year's price, it has decreased in price.
Divide
a) (4a-4b)÷(a-b)
Answer:
4a+4b
Step-by-step explanation:
Can someone please help?
Answer:
x= -9, x=9
Step-by-step explanation:
hope i helped if i did it wrong lmk i can try doing it better
2(x-3)=5(x-3)+10
Need urgent help
Step-by-step explanation:
2(x-3)=5(x-3)+10
=> 2x - 6 = 5x - 15 + 10
=> -6 + 15 -10 = 5x - 2x
=> 5x -2x = 15 - 6 - 10
=> 3x = 15 - 16
=> 3x = -1
[tex] = > x = \frac{ - 1}{3} (ans)[/tex]
On a coordinate grid, the coordinates of vertices P and Q for polygon RQRS are P(1, 2) and Q(-1, 2)
pls help will mark brainliest Which factor has the most significant impact on the economy of North Korea?
Group of answer choices
its natural resources
its location
its people
its government
Answer:
Goverment?
Step-by-step explanation:
cual es el monomio de este ejemplo 4x⁶+3x⁶
Answer:
Im from us susushshdbshsshshs
On a piece of paper, use a protractor to construct A ABC with mZA = 30mZB= 60° and mZC = 90
Which statements about the triangles are true?
Select each correct answer
1. АС
2.AC > BC
3. AC > AB
4.AC < BC
Answer:
In short, Your Answer would be Option 1.AC < AB & 2.AC > BC
Step-by-step explanation:
Here, we know largest side is always opposite to the largest angle.
As largest angle is C with 90 degree, it's opposite side which is AB must be longest here!! & AC would be second largest & BC would be smallest
The statement about the triangle is given as AB > AC > BC
What is a triangle?
A triangle is a polygon with three sides and three angles. Types of triangles are isosceles, scalene, equilateral and right angled triangle.
The size of a triangle side is proportional to the angle opposite to the side.
m∠A = 30, m∠B= 60° and m∠C = 90. Hence: AB is the greatest followed by AC and then BC
AB > AC > BC
The statement about the triangle is given as AB > AC > BC
Find out more on triangle at: https://brainly.com/question/17335144
I will give a brainliest to the person who has gets the correct answer with an explanation of how you solved it.
I need answer ASAP!
Answer: [tex]V = 24,416.64m^{3}[/tex]
Step-by-step explanation:
Solve for v by simplifying both sides of the equation, then isolating the variable.
Formula: [tex]v = \frac{4}{3} \pi r^{3}[/tex]
Plugin the variable: [tex]v = \frac{3}{4}\pi (18^{3})[/tex]
Solve:
[tex]v = \frac{4}{3} 3.14 (5,832)[/tex]
[tex]v = 4.18666666(5,832)[/tex]
[tex]V = 24,416.64m^{3}[/tex]
Divide.
1.6 23.2
I need help I’m gonna cry.
Answer:
use a calculator
Step-by-step explanation:
its not that hard
Find the missing side of this right
triangle.
10
Х
15
x= [?]
Enter the number that belongs in the green box.
Enter
Answer:
Step-by-step explanation:
A^2+B^C^2 ////////A^2=10, and B^2=X^2, and C^2=15
10^2 + X^2 =15^2
100 + X^2 = 225(15^2 = 225)
-100 -100
= square root x= square root (125)
your answer will be 125
The value of the missing side of this right triangle is 11.18 units and the number that belongs in the green box is 125.
What is Pythagoras theorem?Pythagoras theorem says that in a right angle triangle the square of hypotenuse side is equal to the sum of the square of other two legs of right angle triangle.
In the given image,
A right angle triangle is given.The length of the base is 15 units long.The length of the hypotenuse is 15 units long.Using the Pythagoras theorem, the value of x can be found out as,
[tex]x^2+10^2=15^2\\x^2=15^2-10^2\\x^2=225-100\\x^2=125\\x=\sqrt{125}\\x=11.18[/tex]
Thus, the value of the missing side of this right triangle is 11.18 units and the number that belongs in the green box is 125.
Learn more about the Pythagoras theorem here;
https://brainly.com/question/343682
#SPJ2
Graph the function f(x)=-4/3x+4
Answer: Option D is correct.
Step-by-step explanation: An exponential function is in the form of where a is the initial value and b≠ 0 , b >1 .
Given: The function f(x) = y = ......[1]
The domain is all real numbers and the range is y > 0.
y-intercept defined as the graph crosses the y-axis.
Substitute the value of x= 0 in [1] to solve for y;
y = = 4
y-intercept = (0, 4)
End behavior:
when b =3 >1
then;
as ,
as ,
therefore, the only graph which represents the function y = is Option D