Answer:
sinx = √2/3
Step-by-step explanation:
cos2x = 1-2sin²x
5/9 = 1-2sin²x
2sin²x =1-5/9
2sin²x = 4/9
sin²x = (4/9)/2
sin²x = (4/9)*(1/2)
sin²x = 2/9
sinx = √2/3
For what values of h and k does the linear system have infinitely many solutions? 2x1 + 5x2 = −1 hx1 + kx2 = 7
Answer:
The values of [tex]h[/tex] and [tex]k[/tex] for a linear system with infinitely many solutions are -2 and 5, respectively.
Step-by-step explanation:
Let [tex]2\cdot x_{1}+5\cdot x_{2} = -1\cdot h\cdot x_{1} + k\cdot x_{2} = 7[/tex], if this linear system has infinitely many solutions, then the following conditions must be met:
[tex]-1\cdot h = 2[/tex] and [tex]k = 5[/tex].
[tex]h = -2[/tex] and [tex]k = 5[/tex]
The values of [tex]h[/tex] and [tex]k[/tex] for a linear system with infinitely many solutions are -2 and 5, respectively.
please help if possible show work but if not its fine just help plsssss
Step-by-step explanation:
Number one, 743
× 63
2229
Number four is 2.5/3 (don't trust me too much with this one)
number five, multiply 8.5 by 3 and you'll get 25.5
A fence surrounds two sides of the
backyard. The total length of the fence is 86
feet, with the longest portion measuring 51.5
feet. What is the length of the second side of
the fence?
Answer:
Step-by-step explanation:
86-51.5= 34.5
Can y’all help me with this plz
Please hurry I need please
Answer:
Since I'm rushing, please give brainliest
Step-by-step explanation:
It is 23.57, trust me :D
Answer:
A. 23.57
Step-by-step explanation:
Use a calculator if you can
Triangle with exactly
2 equal sides
Hey there!
ALL triangles has 3 sides. (Top and the two corners)
The only try that has the sides that are equal to each other is, the isosceles triangle ; the isosceles triangle is equal to 180°
Answer: ISOSCELES TRIANGLE ☑️
Good luck on your assignment and enjoy your day!
~LoveYourselfFirst:)
Here’s an example SIDE A is EQUIVALENT (EQUAL) to SIDE B
what’s the area of the triangle
Answer:
12
Step-by-step explanation:
because the base is 4 and the height is 6
Answer:
Step-by-step explanation:
Formula of area of triangle = 1/2(b*h)
1/2(4*6)
1/2*24
12 units square
Use the original price and the markdown to find the retail price. Original price: $145; Markdown: 36% The retail price is $
Answer:
36% in decimal form is .36 .36x145=$52.20 new price
Step-by-step explanation:
You're in 6th grade?
Is x = –4 a valid solution this linear equation?
2x + 9(x – 1) = 8(2x + 2) – 5
Answer:
Yes it is!
Step-by-step explanation:
All you have to do is plug in -4 in place of all the x’s. You should get
-8x - 36 - 9 = -64x + 16 - 5
Simplified: -8x - 45 = -64x + 11
+45. + 45
-8x = -64x + 56
+64 +64
56 = 56
Answer = True
So yes -4 is a correct solution!
Question: Which point is a reflection of(6.5, 1) across the x-axis and the y-axis?
A. Point u
B. Point V
C. Point W
D. Point X
Answer:
C.............
Step-by-step explanation:
correct option*
PLEASE HELP I WILL GIVE BRAINLIEST
Answer:
The answer is A
Step-by-step explanation:
Poppy bought a new bed for $142. The tax is 7%. How much did she spend in taxes only?
Answer:
9.94
Step-by-step explanation:
Convert 7% into decimal form, 0.07 because it is 7% of 100. Then multiply 0.07 with 142 to find 7% of 142.
Answer:
$9.94
Step-by-step explanation:
The net price is $142 and the sales tax (7%) is $9.94. The total price would be $151.94.
six less than a number
Answer:
Y E S
Step-by-step explanation:
rickrolled
−2/5x−2=18 Solve for x
Answer:
50
Step-by-step explanation:
explenation on picture :))
Hi, can anyone help me. Please!
Answer:
its D
Step-by-step explanation:
Write the phrase as an algebraic expression
Answer:
a = p + 3
Step-by-step explanation:
a is whatever team scored 3 more runs than the Pirates, p is the Pirates.
please help! (20 points)
Check all that are inequalities.
-3 = y
t > 0
-4.3 < a
g = 5 and one-half
k less-than Negative StartFraction 5 Over 7 EndFraction
x = 1
Answer:
Guys the real answer is B C E
I really hope this helps :)
Answer:
The answer is B, C, E.
Step-by-step explanation:
B: t > 0
C: -4.3 < a
E: k less-than Negative StartFraction 5 Over 7 EndFraction
is -√3 rational or irrational?
Answer:
its irrational because it has the square root sign
Step-by-step explanation:
Sandra calculated her taxable income as $39,250. She paid $6,000 in federal withholding tax. And you are single Your tax is If line 43 (taxable income) is At least But less than 39,200 39,250 39,250 39,300 39,300 39,350 39,350 39,400 5,931 5,944 5,956 5,969 Based on the table above, what is the amount Sandra will receive as a refund?
Answer: 56
Step-by-step explanation:
6,000-5,944=
because 6,000 is how much she paid, but she only owed 5,944 so the the difference is what her refund is.
Jackson wants to buy a new video game console. He has saved $50 and
earns $20 per lawn that he mows. Which of the following equations can be
used to determine the number of lawns Jackson needs to mow, m, in order to
buy the video game console, which costs, c, dollars?
0
m
1 ={c+50
C = 50m + 20
m =
- c + 50
C = 20m + 50
CLEAR ALL
Answer:
C=20+50
Step-by-step explanation:
logistics
if EF=13 and DF=18, find EH
A medical device company knows that 11% of patients experience injection-site reactions with the current needle. If 3 people receive injections with this type of needle, what is the probability that the first person has an injection-site reaction, but the next two do not?
Answer:
0871
Step-by-step explanation:
Using geometric distribution, the probability that the first person has an injection-site reaction, but the next two do not is 0.087131.
What is geometric distribution?Geometric distribution is "a discrete probability distribution that represents the probability number of successive failure before a success obtained in a Bernoulli trial".
According to the question,
Patients experience injection-site reactions with current needle is 11%.
Number of people receive injections with this type of needle is 3.
The probability mass function of Geometric distribution (PMF) is given as
[tex]P(1 - p)^(x-1)[/tex].
P = 11 % = 0.11
In order to find the probability that the first person has an injection-site reaction, but the next two do not
= [tex]0.11(1-0.11)^(3-1)[/tex]
= [tex]0.11(0.89)^2[/tex]
=0.11(0.7921)
=0.087131
Hence, using geometric distribution, the probability that the first person has an injection-site reaction, but the next two do not is 0.087131.
Learn more about geometric distribution here
https://brainly.com/question/25783392
#SPJ2
The ratio of cats to dogs at the park was 5:7 if there were 60 total how many were dogs
Answer:
5
Step-by-step explanation: i think its right but you need to add the 5 and 7, and i divided it by the amount total, :)
Each month, a phone company charges $30 talk time plus $0.50 for each additional minute.
Write an expression to show the cost of a plan for one month???
Answer:
Step-by-step explanation: If 1 minutes of talk = 30 and texting = 30
and each additional minute of talk = 0.50
then the bill would be (for C = total cost)
C = 20+30+(0.45 • x)
OR
C = 50 + 0.45x
Answer:
30+.50m=c
Step-by-step explanation:
30 is the initial cost. Since its initial it is only a one time fee.
.50 is the cost per minute, since it says per you can automatically assume that it will be more than once.
M represents the minutes that they spend on the call, so if there was a 10 minute call, instead of m you would put 10, 10×.50.
But since there is no given time we have to put a variable, m, as a replacement.
The c is the variable for the cost.
I hope I helped you! Have a great day! :3
Solve for h.
what is h equal to?
Answer:
the last one
Step-by-step explanation:
.................
5. Nate wants to solve 114 - 50,
He wants to solve using a number bond to subtract from 100. What two numbers
should he use to break apart 114?
150x8-10+25=
Is it 1,205
1,215
1275
Answer:
1215
Step-by-step explanation:
Step 1: 150 x 8 = 1200
Step 2: 1200 - 10 = 1190
Step 3: 1190 + 25 = 1205
This dessert has 75 calories for every 2 ounces. How many calories are in 8 ounces?
Answer:
300 Calories
Step-by-step explanation:
75/2=37.5/1 Divide to fine the unit rate Dessert has 37.5 calories In 1 ounce 37.5 calories x 8 ounces = 300 calories
Pls anserw I need help
Answer:
2.7
Step-by-step explanation:
0.5+1.2+1= 2.7
Which is the correct formula to find the area of triangle AED? A B D E C area of triangle AED 1 • CDAE 2 area of triangle AED = AE - DE 2 area of triangle AED 1 2 • CE - AE area of triangle AED = AE - AE Reset Next
Answer:
option b.
area of triangleAED=1/2×AE×DE