Answer
D
Step-by-step explanation:
y=2x+15
7=2(-4)+15
7=15-8
7=7
7x+2y=-14
7(-4)+2(7)=-14
-28+14=-14
-14=-14
16 Which expression is represented by the model shown below?
Find the exact value of Cosine (alpha + beta) given sin Alpha = two-fifths for Alpha in Quadrant II and Cosine Beta = one-third for Beta in Quadrant IV.
The exact value of cos (α + β) is (4√2-21) / 15.
What is angle?An angle is the formed when two straight lines meet at one point, it is denoted by θ.
Given that,
Sin α = 2/5, and α is in second quadrant,
cos β = 1/3 , and β is in fourth quadrant
Since, α is in second quadrant, the value of cos α will be negative.
The value of cos α, by right angle triangle property,
cos α = -√21 / 5
Since, β is in the fourth quadrant, the value of sin β will be negative.
The value of sin β = - 2√2 / 3
Cos (α + β) = cos α.cos β - sin α. sin β
Substitute the values here,
Cos (α + β) = (-√21 / 5) . 1/3 - 2/5. ( - 2√2 / 3)
= -21/15 + 4√2/15
= (4√2-21) / 15
The value of cos (α + β) is (4√2-21) / 15.
To learn more about Angle on:
https://brainly.com/question/28451077
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Answer:
D
Step-by-step explanation:
what is 5 plus 2 it is 7
Answer:
The answer is 7.
Step-by-step explanation:
5 + 2 = 7
I hope this helps! If it did, please consider rating and pressing thanks! Have a good day.
Answer:
7
Step-by-step explanation:
which one is 25%? please help me
So first of all you count all the blocks, so it will be 16 blocks (4x4) sideways and horizontal.
A = 16/4 marked blocks = 25%
B = 16/8 marked blocks = 50%
C = 16/6 marked blocks = ?
D = 16/10 marked blocks = 62,5%
So answer would be A
Write an expression in standard form for
the area of the rectangle.
4x - 1
+
2x + 5
Answer:
6x +4
Step-by-step explanation:
add or subtract like terms
After 10 minutes a place was 75 miles
from Chicago, after 17 minutes it was
138 miles from Chicago. What is the
plane's average speed (miles per min)?
Please help me answer and understand this question, im really confused and don't know what to do
Answer:
what the hell is this question
Can someone show me how to do this? It’s dividing polynomials.
Answer:
its 56
Step-by-step explanation:
hi uhm help im bad at math
Answer:
All it says is PDF NOT AVAILABLE.. can you type the question out.
There is actually 2 questions
a farmhouse shelters 23 animals some of them are ducks and the others are goats . altogether these animals have 62 legs. find how many ducks and goats are in The farmhouse.
in a coin Bank , there are 104 dime and quarters worth a total of $14 . how many of each type of coins are in the bank .
Answer:
not sure but i need points
Step-by-step explanation:
helpppp pleaseeeeeeeeeee
Answer:
y=5
Step-by-step explanation:
if the slope is 0, its just a horizontal line passing through 7,5
have a good day lovely :)
Jimmy has 10 apple’s and gets rid of 2 how many are left
Answer:
8
Step-by-step explanation:
Answer:
8 apples
Step-by-step explanation:
By saying gets rid of, it means subtraction
So, the equation would be
10-2
=8
Hope that clarified your answer!
What is the slope-intercept equation of the line below?
y-intercept = (0-2)
slope = -1
Answer:
y = -1x -2
Step-by-step explanation:
50°
(x + 16)
Please help
Answer:
50o • (x + 16)
Step-by-step explanation:
it stays the same.
Given the formula y = mx + b, what is the slope of a line, m, if x = 5, y = 7, and b =10?
A. The slope 3/5 ·
B. The slope 5/3 ·
C. The slope - 3/5 ·
D. The slope - 5/3 ·
describe fully the single transformation which takes shape A to shape B
Answer:
You need to show us the shapes first bro
Step-by-step explanation:
What is the distance between the points 4 and -5 on a number line?
Answer:
9
4--3--2--1--0--1--2--3--4--5
Positive Negative
Step-by-step explanation:
At a sports camp, there is 1 counselor for every 8 campers. If there are 320 campers attending the camp, how many counselors are needed?
Answer:
40
Step-by-step explanation:
divide 320 by 8 and get 40 cause ratio is 1:8 so answer is 40:320
Day
Monday
Tuesday
Wednesday
Thursday
Friday
Minutes for Sarah
to Reach School
38
27
25
26
17
On which day did Sarah reach school in the
shortest amount of time?
How many minutes more did Sarah take to
reach school on Monday than on Thursday?
Answer:
Step-by-step explanation:
Sickbed yeah dondrn lake
what is the slope intercept formula
Answer:
y=mx+b
Step-by-step explanation:
Answer:
y=mx+b
Explanation:
The slope-intercept formula is y=mx+b. The b represents the y-intercept, which is the point where a line on a graph meets the y-axis. The coordinates for this would be (0,b). The m represents the slope, which is the rate of change. The x represents any x variable that you plug in. The y represents the y variable.
-6=8x-14 show all steps please
Answer:
1=x
Step-by-step explanation
Add 14 to both side(because it is opposite)
-6=8x-14
+14 +14
8=8x
Divide both sides by 8
8/8=8x/8
1=1x(or just 1=x)
The answer will be X=1.
For shipping packages, UPS charges $7.00 for the first pound, and $0.20 for each additional pound. FedEx charges $5.00 for the first pound and $0.30 for each additional pound. How many pounds will it take for UPS and FedEx to cost the same? Using p for the number of pounds, write and solve and equation to represent this situation.
Answer:
x=20
Step-by-step explanation:
7+0.20x=5+0.30x
then take the 7 and subtracet the 2 from it, then take the 0.30 and subtract the 0.20 from it then you should get 2=0.10x
then to get rid of the 0.10 you take it and divide it from the 2 which gives you 20 then you have 20=x and thats your answer
Rashads teacher buys paperback books for her classroom library. Each book costs $6, and she spends a total of
$150
Which equation models the number of books, n, she buys?
n=150
G150-n%3D6
56-150=
.
hip
Answer:
A 6n=150
Step-by-step explanation:
What is the value of x in the equation: 3x – 5x + 10 = 36
Answer:
-13
Step-by-step explanation:
3x-5x+10=35
-2x+10=36
-2x=36-10
-2x\-2=26\-2
x=-13
3Hg(NO3)2
Please help me with this
Answer:
whats the question
Step-by-step explanation
what do i gotta do??
Write the statement below as a math expression
twice the difference of a number and eight
A.
2n+8
B.
2n-8
C.
2(n+8)
D.
2(n-8)
Solve for y.
V
- 14 = 14
4
Simplify your answer as much as
question 1................
Answer: D
Step-by-step explanation:
If my calculations are right, it should be d
If f(x)=5X^3 - 2 and g(x)= x+1, find (f-g)(x) A. 5x^3+1 B. 5X^4-2 C. 5x ^3-x-1 D. 5x^3-x-3
(f * g)(x)=(5x^3)*(x+1)=5x^4 +5x^3
Glen got 48 out of 64 correct in his test.
What fraction of the marks did he get correct?
Give your answer in its simplest form
Answer:
48/64
Because 48 out of 64
Answer:
3/4 of the marks he got correct