Answer:
A
Step-by-step explanation:
39.4 x 1.7 I don’t how workout this out
Answer:the answer is 66.98
Step-by-step explanation:
The angle measures of a triangle are 2y+3 degrees 9y-7 and 7y+4 degrees what is the value of y
Answer:
2y+3+9y-7+7y+4=180
2y+9y+7y=180(+7-7)
18y=180
y=180/18
y=10
then
2y+3
2×10+3
20+3
23
9y-7
9×10-7
83
7y+4
7×10+4
74
-19 + 4k - 15k - k -9
Answer:
Let's simplify step-by-step.
−19+4k−15k−k−9
=−19+4k+−15k+−k+−9
Combine Like Terms:
=−19+4k+−15k+−k+−9
=(4k+−15k+−k)+(−19+−9)
=−12k+−28
Answer:
=−12k−28
Step-by-step explanation:
What is the best name of the line?
The variables y and x have a proportional relationship, and y = 28 when x = 21.
What is the value of x when y = 42?
0 x = 14
o x = 18
o x = 31
OX = 56
Answer:
c
Step-by-step explanation:
Fill in the blank in this equation y=7x-5; (2,__)
Answer:9
Step-by-step explanation:
If X is 2, then plug it in to get 2x7-5= 9
Y is 9
Priya starts with $50 in her bank account. She then deposits $100 each month from her Costco paycheck.
Part 1: Write an equation that represents the relationship between the dollar amount in her bank account and the number of months of saving.
Part 2: Explain each of the variables in your equation.
Which algebraic expression is equivalent to the expression below?
--------------------------
(4n + 14) + (6 + 7n)
--------------------------
A. 24n + 7
B. 10n + 21
C. 18n + 13
D. 11n + 20
Answer:
D
Step-by-step explanation:
Combine like terms 4n can only be added with 7n and 14 can only be added to 6
Answer:
11n + 20
Step-by-step explanation:
Because all of the signs are + , the parentheses can be removed.
Next, combine like terms:
4n + 14 + 6 + 7n = 11n + 20
None of the three given possible answers is correct.
PLEASE HELP ASAP AND IF YOU DONT KNOW DONT ANSWER (PHOTO ATTACHED)
Answer:
I believe its b, bc the slope is negitive
Step-by-step explanation:
Answer:
its the second one from the left side
Step-by-step explanation:
hope this helps
What is one way to find the total cost of a pair of shoes for $57 with a sales tax of 2%?
Answer:
maybe use a calculator
Step-by-step explanation:
you can put in 57 and then divide it by 2%
Answer:
one way is to multply 57$ by 2% then you well find the tax
Step-by-step explanation:
it's actally a good stragey
What is the domain of the given function?
{x | x = –6, –1, 0, 3}
{y | y = –7, –2, 1, 9}
{x | x = –7, –6, –2, –1, 0, 1, 3, 9}
{y | y = –7, –6, –2, –1, 0, 1, 3, 9}
Answer:
{x | x = –6, –1, 0, 3}
Step-by-step explanation:
doin the test rn
3 regular pizzas and 2 small pizzas cost $31.
9 regular pizzas and 8 small pizzas cost $103.
What's the cost of 1 regular pizza?
What's the cost of 1 small pizza?
first of all, lets set up the equation
3x + 2y = 31
9x + 8y = 103
+--------------------
now make them equal
12x + 8y = 124
9x + 8y = 103
+----------------------
x=7
y=5
Need help Pronto! Will give braintliest.
Answer:
2
Step-by-step explanation:
I did my work here, and can u pls answer my recent question
The length l of a rectangle is decreasing at a rate of 3 cm/sec while the width w is increasing at a rate of 3 cm/sec. When l=5 cm and w=12 cm, find the rates of change of the area, the perimeter, and the lengths of the diagonals of the rectangle. Determine which of these quantities are increasing, decreasing, or constant.
a) The rate of changes of the area of the rectangle is _______ cm^2/sec
Is the area increasing, decreasing, or constant?
b) The rate of change of the perimeter of the rectangle is ____ cm/sec.
Is the perimeter increasing, decreasing, or constant?
c) The rate of change of the length of the diagonals of the rectangle is ____ cm/sec.
Is the length of the diagonals increasing, decreasing, or constant.
Answer:
1) dA/dt = -21 cm²/s and Area is decreasing
2)dP/dt = 0 and perimeter is constant
3) dD/dt = 21/13 cm/s and diagonal is increasing
Step-by-step explanation:
We are given that;
length l of a rectangle is decreasing at a rate of 3 cm/sec.
Thus, dl/dt = -3 cm/sec
Also, the width w is increasing at a rate of 3 cm/sec. Thus;
dw/dt = 3 cm/sec
When l=5 cm and w=12 cm;
A) Area is given by the formula;
A = lw
The rate at which area is increasing is;
dA/dt = l(dw/dt) + w(dl/dt)
Plugging in the relevant values;
dA/dt = 5(3) + 12(-3)
dA/dt = 15 - 36
dA/dt = -21 cm²/s
This is less than 0.thus, A is decreasing.
B) Formula for perimeter is;
P = 2l + 2w
rate of change of perimeter is;
dP/dt = 2(dw/dt) + 2(dl/dt)
Plugging in the relevant values, we have;
dP/dt = 2(-3) + 2(3)
dP/dt = 0
Thus,Perimeter is constant
C) the length of the diagonal of a rectangle is given by;
D = √(w² + l²)
Rate of change of diagonal is;
dD/dt = [2w(dw/dt) + 2l(dl/dt)]/(2√(w² + l²))
2 will cancel out in numerator and denominator to give;
dD/dt = [w(dw/dt) + l(dl/dt)]/(√(w² + l²))
Plugging in the relevant values gives;
dD/dt = [12(3) + 5(-3)]/(√(12² + 5²))
dD/dt = (36 - 15)/13
dD/dt = 21/13 cm/s
This is greater than 0.
Thus, diagonal is increasing.
What is the equation of the line that is parallel to the line 5x + 2y = 12 and passes through the point (-2, 4)?
O y=-5/2x-1
O y=-5/2x+5
O y=2/5x-1
O y=2/5x+5
Choose all that apply!!
Answer:
B and D. I think
find the distance between (9,3) and (5,-3) in simplest radical form
Answer:
[tex]d = 2\sqrt{13}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra II
Distance Formula: [tex]d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]Step-by-step explanation:
Step 1: Define
Point (9, 3)
Point (5, -3)
Step 2: Find distance d
Simply plug in the 2 coordinates into the distance formula to find distance d.
Substitute [DF]: [tex]d = \sqrt{(5-9)^2+(-3-3)^2}[/tex]Subtract: [tex]d = \sqrt{(-4)^2+(-6)^2}[/tex]Exponents: [tex]d = \sqrt{16+36}[/tex]Add: [tex]d = \sqrt{52}[/tex]Simplify: [tex]d = 2\sqrt{13}[/tex]PLZ ANSWER IF U KNOW THE ANSWER
Answer: its b
Step-by-step explanation:
Answer:
B.
Step-by-step explanation:
Help I need to turn this in by 12:30
How to solve -6(8x+20) incorrectly
A survey showed that 70% of adults need correction (eyeglasses, contacts, surgery, etc.) for their eyesight. If 7 adults are randomly selected, find the probability that exactly 2 of them need correction for their eyesight.
Answer:
0.0250047
Step-by-step explanation:
Given that :
Proportion who need correction glasses = 70%
Number of trials = 7
Probability that exactly 2 needs correction glasses :
Using a binomial probability formula :
P(success) = p = proportion who need glasses = 0.7
P(x =x) = nCr * p^x * (1 - p)^(n - x)
P(x = 2) = 7C2 * 0.7^2 * 0.3^(7 - 2)
P(x = 2) = 7C2 * 0.7^2 * 0.3^5
P(x = 2) = 21 * 0.49 * 0.00243
P(x = 2) = 0.0250047
Please Help These Are All My Points.
i need help with this asap! will give brainiest if answered correctly
Answer:
Step-by-step explanation:
2
Find the value of 3(ab)^2 if a=2 and b=-1
Answer:
12
Step-by-step explanation:
3 (2*-1)^2
3*-2^2
3*4
12
Will give brainllest and points
Which statement BEST describes one step of photosynthesis?
A) Mitocholdria release energy
B) Chloroplasts release energy by breaking down food molecules
C) Chloroplasts absorb energy from the sun
D) Mitochondria transform solar energy into sugar
The step that best describes the one step of photosynthesis is Mitochondria transform solar energy into sugar.
What is Photosynthesis?
the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
Given are the processes regarding photosynthesis.
The step that best describes the one step of photosynthesis is Mitochondria transform solar energy into sugar. Plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
Therefore, the step that best describes the one step of photosynthesis is Mitochondria transform solar energy into sugar.
To solve more questions on photosynthesis, visit the link below-
https://brainly.com/question/1757345
#SPJ6
10 points need help asap image to help
Write the equation of the line, in slope-intercept form, that passes through the point (-2, -1) and has slope 5.
Tim
Atte
1N
A proportional relationship is graphed on the coordinate plane. The line that represents the relationship passes through points (0,0) and (5,10). What is the unit rate of the proportional relationship?
Answer:
Step-by-step explanation:
HELLPPPP
100 points! hard problem!
Answer:never gonna give you up
Step-by-step explanation:by rick astley
"you wouldnt get this from any other guy and i just wanna ask you how your feeling, gotta make you underatnd, never gonna give you up, never gonna let you down."
nEvEr gOnnA giVe U uP
Which system of linear inequalities is represented by
the graph?
Answer:
you forgot to put the image for the graph
