Step-by-step explanation:
Since y= -7x you will want to substitute the y in the other equation.
2x -(-7x) = -9
2x + 7x = -9
9x = -9
so x will be -1
y= -7(-1)
x= -1
y= 7
Answer:
x = -1 , y =7 (-1,7)
Step-by-step explanation:
[tex]y=-7x\\2x-y = -9\\[/tex]
[tex]2x+7x = -9[/tex]
[tex]2x+7x = 9x\\[/tex]
[tex]9x = -9\\[/tex]
[tex]\frac{9x}{9} =\frac{-9}{9}[/tex]
[tex]x = -1\\[/tex]
[tex]y = -7(-1)\\y = 7[/tex]
At x= pi/4 , find the product (sin4x)(cos5x)
Answer:
zeroStep-by-step explanation:
x= π/4
sin(4x)*cos(5x) =sin(4*π/4)*cos (5*π/4) =sin(π)*cos(5π/4)sin(π) = 0, therefore the product is also zero
Find the exact value of csc 5pi/6
Answer:
csc 2 (csc [tex]\frac{5\pi}{6}[/tex] = csc 150 = csc 30 = csc 2)
Step-by-step explanation:
csc [tex]\frac{5\pi}{6}[/tex] is in the 2nd Quadrant where only sin, and csc are positive.
csc [tex](\frac{5\pi}{6})=csc (\pi -(\frac{5\pi}{6}))=csc(\frac{5\pi}{6})[/tex]
but csc [tex]\frac{5\pi}{6}[/tex] = [tex]\frac{1}{sin (\pi/6)} = \frac{1}{sin 30} = \frac{1}{1/2} =2[/tex]
Which answer has been rounded to the whole number?
4.1
4.10
4.100
Or 4
Answer:
4
Step-by-step explanation:
4 is a whole number
In mathematics, whole numbers are the basic counting numbers 0, 1, 2, 3, 4, 5, 6, … and so on. 17, 99, 267, 8107 and 999999999 are examples of whole numbers. Whole numbers include natural numbers that begin from 1 onwards. Whole numbers include positive integers along with 0.
Suppose f(x)=x+2. Find the graph of f(1/3x)
Answer:
f(x)=x+2.
f(1/3x)=1/3 x+2=(x+6)/3or x/3+2
Answer:
graph 3
Step-by-step explanation:
Please hurry; Which function increases the fastest? A. y 5 14x B. y 5 23 · 17x C. y 5 120x D. y 5 2275x^x
a y = 14^x
b y = -3 (17)^x
c y = 120x
d y = -275x
Answer:The given equation is of the form y = mx + b where m is the slope and b is the y-intercept.
Here, m = -14
Two parallel lines have the same slope. So, the slope of the new line will be -14.
To calculate the y-intercept substitute x=4 and y=4 in the equation.
4 = (-14)(4) + b
Solving for b, we get b = 60.
So, the new equation will be y = -14x + 60
Step-by-step explanation: pls brainlist
Can you help me on question one?!
Answer:
I believe the answer is C
Answer:
I think answer is C
Step-by-step explanation:
Becausr A B AND D ARE SAME FORM OF WRITTING
2) -88, 93, 4, 91, -15, 6
Answer:
3) 24. -42, 16, 8, 12, 38
Answer:
4) 92, 28, 32, 48, -5, -21
Answer:
5-16, -12, 6, 3, 10, -21
Answer:
Answer:
Step-by-step explanation:
Huh
Which number is between 0.4 and 0.5?
A 0.04
(В
0.44
0.05
0.50
Find the missing length of the triangle.
11.
26 in.
10 in.
у
12 out of the 50 U.S. states have names that start with a vowel. What percentage of U.S. states' names start with a vowel
Answer:
24% of the U.S. states have names that start with vowels
Step-by-step explanation:
12 ÷ 50 = 0.24
0.24 × 100 = 24%
Answer:
24 % of the U.S. states' names start with a vowel
Step-by-step explanation:
12 out of 50 vcan be written in math terms as;
12 / 50 which equals the decimal form of a percent as shown;
12 / 50 = 0.24
which in percent form is: 24 %
1.
A bacteria sample is growing exponentially, as a seen in the table below.
Which exponential regression equation best represents this data? (Round values to the nearest tenth.)
a) y=22.3(1.4)^x
b) y=20.5(1.9)^x
c) y=15.1(0.8)^x
d) y=32.6(1.6)^x
Answer:
b) y=20.5(1.9)^xStep-by-step explanation:
As per data in the table:
The initial number is 20The growth rate is about twiceThis is best matching the function:
y = 20.5(1.9)^xoption b)
X+y = -15 in y = mx+b form
Answer:
y=-15x+b
Step-by-step explanation:
Just move it around and use a calucator
Identify the transformation shown by the 2 lines on the graph as a dilation or translation.
a) translation
b) dilation
Answer:
b) dilation
Step-by-step explanation:
Translation:
Figure has the same size, just in different positions.
Dilation:
FIgure has different size.
In this question:
We have function [tex]f(x) = x[/tex].
And also, we have function [tex]g(x) = \frac{x}{4}[/tex], that is, the figure f changes in size, is divided by 4. So it is a dilation.
24 + 8k = i dont know what it is
Answer:
Your answer is 8024 hope this helps
Step-by-step explanation:
Answer:
k = 3
Step-by-step explanation:
So i'm guessing you are solving for k so you divide 24 by 8 and you get 3
pls give me brainliest :)
Please anyone help its due will give brainlist please
⦁ Explain the difference between a linear expression and a linear equation. Use your Reference Book or https://www.mathsisfun.com/.
⦁ Write two different linear expressions that are equivalent (both expressions should be equal but not look the same).
⦁ Show or explain why the two expressions in part b are equivalent.
Answer:
An expression is a number, a Variable or a combination of numbers and variables and operation symbols. An equation is made up of two expression connected by an equal sign I hope this help
The distance between Philadelphia and Las Vegas is 8.5 inches on a map with a scale 1.5 in : 500 miles . What is the distance in miles?
Answer:
2833.3 miles
Step-by-step explanation:
Answer:
a. 2 inches = 1 mile
Step-by-step explanation:
Fracciones equivalentes a 3/10
Answer:
6/20, 9/30, 12/40, 15/50, 18/60, 21/70, 24/80, 27/90, 30/100
Question Progress
Homework Progress
88 / 213 Marks
To complete a task in 16 days a company needs
5 people each working for 6 hours per day.
The company decides to have
8 people each working for 4 hours per day.
Assuming that each person works at the same rate,
how many days will the task take to complete?
Answer:
15 Days
Step-by-step explanation:
Formula:
M1D1H1=M2D2H2
Dan spent $765.00 on equipment to open a business selling burritos. He sells the burritos for $3.50 each. The cost of the ingredients to make each burrito is $0.75
Please help me pleaseeeee
Answer:
1. tan
2. standard
3. y=16.8
Step-by-step explanation:
1. Trigonometic functions are:
sinA=opposite/hypoteneuse
cosA=adjacent/hypoteneuse
tanA=opposite/adjacent.
We have the opposite side (20) and the adjacent side (y), but not the hypoteneuse, ao we have to use tan.
2.Inverse is only used when we dont know the angle measure, so we use standard.
3.tanA=opp/adj
tan50=20/y
1.19175359259=20/y
y=16.7819926235 or 16.8
What is the decimal multiplier to decrease by 8. 4%
Answer:
0.916
Step-by-step explanation:
100-8.4
91.6%
What is the domain of f for f(x)=x-3/x+2?
Answer:
(-infinity, -2) ∪ (-2, infinity)
Step-by-step explanation:
I will have to assume that you meant
f(x)=(x-3)/(x+2). You must use parentheses to specify the order of operations in this problem.
x can take on any value except -2, at which the function is undefined.
Thus, the domain is (-infinity, -2) ∪ (-2, infinity)
2.79 ? 2.790
Are they equal or which one is greater
Answer:
they are equal
Step-by-step explanation:
because you can add how many zeroes after 2.79 but it is going to still be equal.
slope = 3; (-2, -2)
plzz help
Answer:
[tex]y = 3x +4[/tex]
Step-by-step explanation:
Given
[tex]m = 3[/tex] --- slope
[tex](x,y) = (-2,-2)[/tex]
Required
Determine the equation and plot the graph
The formula for the equation is:
[tex]y = m(x - x_1) + y_1[/tex]
This gives:
[tex]y = 3(x - (-2)) - 2[/tex]
[tex]y = 3(x +2) - 2[/tex]
Open bracket
[tex]y = 3x +6 - 2[/tex]
[tex]y = 3x +4[/tex]
See attachment for graph
Solve this system by substitution. y = 6x - 6 y = -4x - 6 *Remember to write your answer as a coordinate point (x, y).
Simplify each of the fractions. If there is no answer, enter "undefined."
C. 16/0
please help i have more questions btw
Answer:
B [tex]1/4^2[/tex] and A [tex]4^1/4^3[/tex]
Step-by-step explanation:
Solve the system using elimination.
SHOW ALL WORK on a separate sheet of paper.
52 - 2y = -48
2x + 3y = -23
Answer:
y=50 and x=-173/2
Step-by-step explanation:
52-2y=-48
∴-2y=-100
y=50
and 2x+3y=-23
y=50→(1)
2x+3y=-23→(2)
Putting y=50 in equation (2), we get
⇒2x+3y=-23
⇒2x+3(50)=-23
⇒2x+150=-23
⇒2x=-23-150
⇒2x=-173
⇒x=-173/2
∴y=50 and x=-173/2
Customers left Jill $2.50 as a tip. The tip was 20% of the total. How much was the bill?
Answer:
$12.50
Step-by-step explanation:
Answer:
The bill was $12.50
Step-by-step explanation:
Brainliest please... nvm
Pablo walks 1/2 mile to school and 1/4 of an hour. What is the unit rate in miles per hour?
Answer:
Unit rate = 2m/h
Step-by-step explanation:
Distance = 1/2 mile x 4 = 2 miles
Time = 1/4 x 4 = 1 hr
Unit rate = 2m/h
I hope im right!!