Answer:
3x + 0.8y
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightDistributive Property
Algebra I
Terms/CoefficientsStep-by-step explanation:
Step 1: Define
(-4x + 4.2y) - (-7x + 3.4y)
Step 2: Simplify
[Distributive Property] Distribute negative: -4x + 4.2y + 7x - 3.4yCombine like terms (x): 3x + 4.2y - 3.4yCombine like terms (y): 3x + 0.8yJust need formulas not the whole explanation
If a test has 30 questions on it and a student answers 18 of the questions correctly, then what percentage would the student get on the test?
a recipe calls for 3 1/2 teaspoons of mustard seeds, 4 cups of tomato sauce, and 6 3/4 cups of beans, you use 2 2/3 cups of tomato sauce. how many teaspoons of mustard seeds don you need? how many cups of beans do you need?
Answer:
For a recipe call,
Number of teaspoons of mustard seeds =
Number of cups of tomato sauce = 4
Number of cups of beans =
For 4 cups of tomato sauce, the number of teaspoons of mustard seeds needed =
For 1 cup of tomato sauce, the number of teaspoons of mustard seeds needed =
For cups of tomato sauce, the number of teaspoons of mustard seeds needed =
Hence, for cups of tomato sauce, the number of teaspoons of mustard seeds needed is .
For 4 cups of tomato sauce, the number of cups of beans needed =
For 1 cup of tomato sauce, the number of cups of beans needed =
For cups of tomato sauce, the number of cups of beans needed =
Hence, for cups of tomato sauce, the number of cups of beans needed is .
Step-by-step explanation:
A line that includes the point (-8, -7) has a slope of 7. What is its equation in point-slope
form?
Use the specified point in your equation. Write your answer using integers, proper fractions,
and improper fractions. Simplify all fractions.
Answer:
y+7=7(x+8)
Step-by-step explanation:
y-y1=7(x-x1)
y-(-7)=7(x-(-8))
y+7=7(x+8)
HELPPP PLS
2 Line segment MN has a midpoint of (7, 3.5). Point N is located at (14,7). What are
the coordinates for point M?
Answer:
It would be (0,0)
Step-by-step explanation:
7-7=0 and 3.5-3.5=0
Find the distance between (1,1) and (13,6)
Answer:
The distance is 13 units
Step-by-step explanation:
13 - 1 = 12
6 - 1 = 5
12² + 5² = c²
144 + 25 = c²
√169 = c
c = 13
(I could have used the distance formula, but the pythagorean theorem is shorter for this problem)
A baker has 18 boxes for donuts he ended up making 763 donut and splitting them evenly between the boxes how many extra do nuts did he end up with
Answer:
you can get 18 and add it to something
Does (8,3) make the equation y
x true?
yes
no
Answer:
yes
Step-by-step explanation:
Select the correct answer.
The four folded parts of an envelope are opened up to create this figure. What is the surface area of one side of the unfolded envelope?
Answer:
C 50 square centimeters
Step-by-step explanation:
in this question the answer is C) 50
What is 21.8 rounded to the nearest tenth
Answer:
its already rounded to nearest tenth
Hiiioo❤️ Can someone please help me with this❤️:D
Answer:
k= 2.5
Step-by-step explanation:
4k+5=6k+10
-4k -4k
5=2k+10
-10 -10
-5=2k
/2 /2
-2.5= k
Please answer and thank you
Select ALL equations that are functions.
functions can't be with exponents -
the correct answers are b,c,d
Answer:
These 3:
y = 2, y = 1/2x + 5, y = x
Step-by-step explanation:
Y can't be squared that would give a sideways function, that doesn't pass the vertical line test
Solve the following system of linear equations by substitution.
Answer:
my phone is gonna die u can use photomath it will give u the answer hope it helped:)))))))
Ms. Taylor drew a circle on the promethean board and labeled the radius as 9 inches. What is the area of the circle in square inches?
is sebastian or sasha right?
Answer:
Sebastian
Step-by-step explanation:
The surface area of a cylinder is equal to 2πrh+2πr²
have a great day :D
Answer two questions about Equations A and B:
A. 5x = 3x
B. 5 = 3
1) How can we get Equation B from Equation A?
a) add/subtract the same quantity to/from both sides
b) add/subtract a quantity to/from only one side
c) multiply/divide both sides by the same non-zero constant
d) multiply/divide both sides by the same variable expression
2) Based in the previous answer, are the equations equivalent? In other words, do they have the same solution?
a) Yes
b) No
Answer: D multiply/divide both sides by the same variable expression , Then it’s B
Step-by-step explanation:
An equation is formed of two equal expressions. The correct options are D and A, respectively.
What is an equation?An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
1.) We can get equation B from equation A, by dividing both sides of the equation by x.
5x = 3x
5x / x = 3x /x
5 = 3
Hence, We can get equation B from equation A, by multiplying/dividing both sides by the same variable expression. The correct option is D.
2.) For the previous equations, the two sides of the equation or the two expressions on both sides of the equation are not equal, because 5 is not equal to 3.
Although, the equation may become, true if the value of x is 0, otherwise it is not possible.
Hence, the correct option is A.
Learn more about Equation here:
https://brainly.com/question/14686792
#SPJ2
It’s the A question I need will give brainiest
Answer: See explanation
Step-by-step explanation:
Area of one rectangle: l × w
7 × 4 = 28
28 in²
Total area: 28 × 4 = 112
112 in²
Simplify the following expression by combining like terms
4 + 5x + 2 =
Answer:
5x + 6
Step-by-step explanation:
4 + 2 is 6 and there is no other number with x so you leave the 5x alone
Whenever he visits Belleville, Andrew has to drive 15 miles due north from home. Whenever he visits Fairfax, he has to drive 8 miles due east from home. How far apart are Belleville and Fairfax, measured in a straight line?
Answer:
17 miles away
Step-by-step explanation:
if you draw, you get a right angle triangle.
use pythagorean theorem
c² = a²+b²
c² = 15² + 8²
c² = 225 + 64
c= sqrt(289)
c = 17
If someone could answer the second part that would be awesome thanks, no spam please
Answer:
c
Step-by-step explanation:
m<4 and m<3 is a straight angle. straight angles are equal to 180 degrees. the friend found m<3=40 and m<4 is equal to 140 degrees (im not good at explaining, sorry)
ј
m
4
3
12 9
20
15
Write an equation to describe the relationship
between j and m.
Answer:
Step-by-step explanation:
M = ¾J
If you look at the numbers M is always 3/4 of J so the equation is M = ¾J
HOPE IT HELPED YOUWhat is the area of this parallelogram?
4x^4+12x^2+8 solve ✖➖➕➗
Step-by-step explanation:
Simplifying 4x4 + -12x2 + 8 = 0 Reorder the terms: 8 + -12x2 + 4x4 = 0 Solving 8 + -12x2 + 4x4 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '4'. 4(2 + -3x2 + x4) = 0 Factor a trinomial. 4((1 + -1x2)(2 + -1x2)) = 0 Factor a difference between two squares. 4(((1 + x)(1 + -1x))(2 + -1x2)) = 0 Ignore the factor 4.
Subproblem 1
Set the factor '(2 + -1x2)' equal to zero and attempt to solve: Simplifying 2 + -1x2 = 0 Solving 2 + -1x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x2 = 0 + -2 -1x2 = 0 + -2 Combine like terms: 0 + -2 = -2 -1x2 = -2 Divide each side by '-1'. x2 = 2 Simplifying x2 = 2 Take the square root of each side: x = {-1.414213562, 1.414213562}
Subproblem 2
Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1
Subproblem 3
Set the factor '(1 + -1x)' equal to zero and attempt to solve: Simplifying 1 + -1x = 0 Solving 1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 0 + -1 -1x = 0 + -1 Combine like terms: 0 + -1 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1
Solution
x = {-1.414213562, 1.414213562, -1, 1}
How many times smaller is 2 × 10 to the negative 8th power than 4 × 10 to the negative 7 power?
A. 20
B. 200
C. 0.2
D. 2,000
Answer:
A. 20Step-by-step explanation:
How many times smaller is 2 × 10⁻⁸ than 4 × 10⁻⁷ ?
Rewrite the numbers with the same power of 10:
2 × 10⁻⁸ and 40 × 10⁻⁸Divide the second number by the first, cancel the powers as they are same:
40/2 = 20Correct option is A
The values are
2×10-⁸ and 4×01^{-7}Divide to find how many times smaller
4/2×10^{-7+8}2(10)20timesWhat is the area of this square????
pls help
Answer:
The area is 25
Step-by-step explanation:
To find an area of a square just multiply the same number by itself like in this problem multiply 5 X 5
3. Which number has the greatest absolute value?
A)|-3|
B)|-8|
C)|2|
D)|5|
Answer:
B
Step-by-step explanation:
|-8|=8, and all the others are less. hope that helped
A rhombus with four 90° angles can also be called _____.
a. square
b. trapezoid
c. heptagon
d. rectangle
Answer:
square is the answer...
Can someone draw me a doodle monster? I will give brainiest
Answer:
Step-by-step explanation:
A painter must add the areas of two walls to determine
the amount of paint needed. The area of the first wall
is modeled by 4x2 + 12x + 9, and the area of the
second wall is modeled by 36x2 - 12x + 1.
Write a polynomial that represents the total area of the two
walls.
Answer: 40x2+10
Step-by-step explanation:.