Complete Question:
Tim has a large collection of books. The number of paperback books he owns is three less than four times the number of hard cover books, in total Tim had 447 books, How many hard cover books does Tim own ?
Answer:
Tim has 90 hard cover books
Step-by-step explanation:
Represent the paper books as P and the hard covers as H
The total number of books can be represented as:
[tex]P + H = 447[/tex]
From the first statement, we have:
P = 3 less than 4 times H
This means:
[tex]P = 4H - 3[/tex]
Required
Solve for H
Substitute 4H - 3 for P in [tex]P + H = 447[/tex]
[tex]4H - 3 + H = 447[/tex]
Collect Like Terms
[tex]4H + H = 447 + 3[/tex]
[tex]5H = 450[/tex]
Solve for H
[tex]H = \frac{450}{5}[/tex]
[tex]H = 90[/tex]
Hence:
Tim has 90 hard cover books
dudee plz help will be given the brainlist if answered correctly
Answer:
hey im not actually here to help you, i just need points. thanks for the points
Step-by-step explanation:
If my current slope is 7 what is the perpendicular slope?
A- -7
B-7
C- -1/7
D- 1/7
Answer
-7
Step-by-step explanation:
opposite of 7
HELP PLEASEEEE<3!!!!
Answer:
a = b = 40°
Step-by-step explanation:
∠ a and 140° are adjacent and are supplementary , thus
a = 180° - 140° = 40°
a and b are alternate angles and are congruent, thus
b = a = 40°
Answer:
b=40 okkkkllllllkkkkkkkkkkkkkkkkkkkkkllllllkkkk
Find the slope of (-1,4) and (5, 7)
Answer:
[tex]m=\frac{1}{2}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Point (-1, 4)
Point (5, 7)
Step 2: Find slope m
Substitute: [tex]m=\frac{7-4}{5+1}[/tex]Subtract/Add: [tex]m=\frac{3}{6}[/tex]Simplify: [tex]m=\frac{1}{2}[/tex]
HELP ASAP GIVING BRAINLIEST
Solve for x if the angles are adjacent supplementary angles. Use pencil and paper. Show how to check that your value of x is correct
Answer:
x=15
Step-by-step explanation:
srry if I'm wrong =(
What is the slope of the line?
pls help I need the answer
Answer:
the slope of a horizontal line is 0
Josh made $242 for 11 hours of work.
At the same rate, how much would he make for 7 hours of work?
Answer:
If 11hrs= $242
7hrs=7x242/100
154
Josh will made $154
Step-by-step explanation:
Help me pls ASAP thank you
WHOEVER KNOWS HOW TO DO THIS ( in the picture above ) AND COULD GIVE ME ALL THE ANSWERS, ILL VENMO YOU $55 DOLLARS !!
FOR ALGEBRA
JUST DM ME ON INSTA :
VANESSACAMTON
Answer:
The answer would be -6x - 4 + -4. hope this is accurate!
Step-by-step explanation:
Write an explicit rule for the following sequence: 5, 9, 13, 17, 21.
Your answer:
A. a = 4
a = an-1 + 5
B. a = 5
a = an-1 + 4
C. an = 5n + 1
C. an = 4n + 1
Find the square root of -36.
A-6
B 6
C Cannot be done
Answer: C) Cannot be done
Taking the square root of a negative number is not possible unless you involve complex numbers. If your teacher has not introduced that topic yet, then you just simply say "cannot be done" or something along those lines.
What is the fifth term in the sequence 17.3, 34.3, 51.3, 68.3...?
A 77.7
B 85
C 85.3
D 89.7
The fifth term in the sequence would be C.
The schools says they will take the students to see the movie with more than 30% of the votes. Which type of movie will the 7th graders be seeing? Explain your reasoning.
7th grade movie votes:
drama-3
comedy-8
action-4
Work:
Fraction Drama:
Fraction Comedy:
Fraction Action:
Convert to Percent:
9. Which graph can be used to find the solution to the system of equations?
y = x-1
9y = 6x – 15
HELP DUE TOMORROW ASAP BAINLYEST
Answer:
B is the correct answer
Step-by-step explanation:
3/12 = 1/4 = 0.25
Answer:
Step-by-step explanation:
(B)
Subtract -7x^2+4x+2 from x^2-3x
Answer:
-8x^2+x+2
Step-by-step explanation:
please I need some help with both questions.
Step-by-step explanation:
which questions you were asking
Amy said 49 of her teammates got hits during a recent softball game. Which decimal represents this same amount?
A.
0.49
B.
0.444
C.
0.444
D.
0.49
[tex]\frac{1}{2} w -5\ \textless \ -2[/tex]
5x-3 /4=2x+3
Pls help
Answer:
x=-5
Step-by-step explanation:
5x-3/4=2x+3
First, multiply by 4
5x-3=4(2x+3)
Next, distribute.
5x-3=8x+12
Subtract 5x
-3=3x+12
Subtract 12
-15=3x
x=-5
Hope this helps :D
Plsss help I’ll give u brainlest and 10 points
Choose a system and make a case for why you would
or would not choose to solve that system by substitution
Answer:
The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other.
Step-by-step explanation:
*will give brainliest*
While solving an equation, if the variable term becomes zero, and the equation makes a true statement, then the solution is (no solution, one solution, infinite solutions).
Althea traveled 280 miles at a speed of 70 miles/hour. How much time did she take to cover this distance?
Use the equation below to find y, if m=3 ,x=4 , and b=9
y=mx +b
Answer:
y = 21
Step-by-step explanation:
y = 3(4) + 9
= 12 + 9
= 21
I need help with my homework this is hard pls help thx!
z=m-x solve for x
Answer:
x = m - z
Step-by-step explanation:
z = m - x add x to both sides
z + x = m - x + x
z + x = m subtract z from both sides
z - z + x = m - z
x = m - z
Answer:
-z + m = x
Step-by-step explanation:
z = m-x
subtract the m from both sides
z-m = -x
you can't have a negative x so multiply everything by -1
-1(z-m = -x)
-z + m = x
Help plzzzzzzzzzzzzzz
Answer:
∠P
Step-by-step explanation:
∠P is between NP and PE
*BRAINLIEST BRAINLIEST BRAINLIEST BRAINLIEST**
Determine whether or not each expression below is a perfect square. Explain why the expression is or is not a perfect square. If it is not a perfect square, find the perfect square that seems “closest” to the given expression and show how the perfect square can be adjusted to be the given expression.
1. A(x)=x^2+6x+13
2. A(x)=2x^2+8x+14
Step-by-step explanation:
These aren't a perfect square bec. 1 st and 3rd terms must be perfect square
A(X) = X^2+6X +13 be perfect square if 13 Changed to 9
= X ^2+6X +9
A(x)= 2X^2+8X +14 be perfect square
= 4X ^2+ 8X + 16
PLZ help me with this :(
Part 1: Simplify √250
Part 2: Classify the number above as rational or irrational
Level 3 (Proficient: 85%)
Part 1: Simplify √150x*5
Part 2: Is the follow expression rational or irrational and why? 2√4+7
Level 4 (Distinguished: 100%)
Part 1: Simplify 13√750x*5 y*8
Part 2: Create two unique expressions each involving 1 square root and at least 1 operation (adding, subtracting, multiplying, dividing). Make 1 results in a rational number and the other result in an irrational number. Explain your reasoning for both.
Explanation:
Level 2
Part 1: √250 would be simplified to 5√10, because you need to find two factors that equal 250. 25 multiplied by 10 are two factors that you can utilize. Because 25 is a perfect square, it could be reduced to 5. Because 10 isn't a perfect square, you leave it as a radical.
Part 2: √250 is an irrational number because it's a non-terminating decimal and you cannot convert it into a fraction, so it wouldn't be rational.
Level 3
Part 1: √150x^5 would be simplified to 5x^2√6x. Again, find two factors that equal the product, 150. 25 multiplied by 6 are two factors that are useable. Just like the first question, 25 is a perfect square, so it can be reduced to 5. 6 is not a perfect square, so you would leave as a radical. Now, moving onto x^5. You can factor out x^4, because it's a perfect square. x^4 can become x^2. Move x^2 next to 5 and x would be left in the radical with 6.
Part 2: It's rational because 2√4 is simply just 2 x 2 because √4 is a perfect square. 4+7=11. 11 can be converted into a fraction, so it wouldn't be irrational.
Level 4
Part 1: 13√750x*5 y*8 would be simplified to 65x^2y^4√30x. Find two factors that equal 750, which are 25 and 30. You know the drill, 25 is reduced to 5 and 30 stays as a radical. Multiply 13 and 5 to get 65. Factor out x^4 out of x^5 to get x^2. x^8 is a perfect square that can be reduced to x^4.
Part 2: Two unique expressions are 4√16+3 and 5√8 x 34. √16 is a perfect square, so it can become 4. 4 x 4 is 16 and 16 + 3 = 19. 19 is a rational number. 5√8 is irrational, so right off the bat, you'll know it's an irrational expression.
You get a student loan from the New Mexico Educational Assistance Foundation to pay for your educational expenses this year. Find the interest on the loan if you borrowed $5000 at 5% interest for 1 year
Answer:
500
Step-by-step explanation:
