which expressions are equivalent to -56z+28?
choose 2 correct answers:
a: 1/2 x (28z + 14)
b: (-1.4z + 0.7) x 40
c: (14 -7z) x (-4)
d: (8z - 4) (-7)
e: -2(-28z -14)
Answer:
e
Step-by-step explanation:
Make sure all words are spelled correctly.
Try different keywords.
Try more general keywords.
Try fewer keywords
What is the exact value of Cosine (StartFraction 11 pi Over 21 EndFraction) cosine (StartFraction pi Over 7 EndFraction) minus sine (StartFraction 11 pi Over 21 EndFraction) sine (StartFraction pi over 7 EndFraction)?
Negative StartFraction StartRoot 3 EndRoot Over 2 EndFraction
Negative one-half
One-half
StartFraction StartRoot 3 EndRoot Over 2 EndFraction
Answer:
Option (2)
Step-by-step explanation:
Given trigonometric expression is,
[tex]\text{cos}(\frac{11\pi}{21})\text{cos}(\frac{\pi}{7})-\text{sin}(\frac{11\pi}{21})\text{sin}(\frac{\pi}{7})[/tex]
This expression is in the form of an identity,
cos(A + B) = cos(A)cos(B) - sin(A)sin(B)
By substituting the values of A = [tex]\frac{11\pi}{21}[/tex] and B = [tex]\frac{\pi}{7}[/tex] in the identity,
[tex]\text{cos}(\frac{11\pi}{21})\text{cos}(\frac{\pi}{7})-\text{sin}(\frac{11\pi}{21})\text{sin}(\frac{\pi}{7})[/tex] = cos[tex](\frac{11\pi}{21}+\frac{\pi}{7})[/tex]
= cos[tex](\frac{11\pi+3\pi}{21})[/tex]
= cos[tex](\frac{14\pi}{21})[/tex]
= cos[tex](\frac{2\pi}{3})[/tex]
= -[tex]\frac{1}{2}[/tex]
Therefore, Option (2) will be the answer.
Answer:
B. -1/2
Step-by-step explanation:
on edge
If m27 = 55°, which of the following statements are true? Select all that apply.
2
3
4
5/6
8
A m26 = 55°
B
m25 = 135°
Cm21 + 24 = 250°
Dm21 + m26 = m 27+ m24
Answer:
2, 3 , 5/6, b
Step-by-step explanation:
How do you solve this?!!
Answer:
135°
Step-by-step explanation:
Step 1:
100° + 35° + 180° - ? = 180° Sum of a Δ/Vertical ∠'s
Step 2:
315° - ? = 180° Combine Like Terms
Step 3:
315° = 180° + ? Add ? on both sides
Step 4:
315° - 180° = ? Subtract
Answer:
? = 135°
Hope This Helps :)
how many significant digits are there in 074.0030
Answer:
Step-by-step explanation:
6 significant digits
only the first zero is not counted.
ILL GIVE BRAINLY my bruh
One-fourth of a number is 22. Find the number.
Answer:
5.50
Step-by-step explanation:
I am smart
what is the value of (-2)^6 ?
Answer:
64
Step-by-step explanation:
Answer:
-64 would be the answer
Savannah filled
up
her car with gas before embarking on a road trip across the
country. The car uses 1.5 gallons of gas for every hour driven and the capacity of the
gas tank is 15 gallons. Make a table of values and then write an equation for G, in
terms of t, representing the number of gallons of gas remaining in Savannah's gas
tank after t hours of driving.
Number of Hours Driven Number of Gallons Remaining in the Tank
0
1
llll
2
3
Answear:
G=T hope dissssssssss helps
The area of a square garden is approximately 125 square feet. To the nearest foot, what is the length of the garden? Explain how you know in the work space provided.
Answer:
Length = 11.2 ft
Step-by-step explanation:
Area of a square garden = 125 square feet
Formula to find
Area of a square = length^2
Substitute the value of the Area of the square garden
Area of a square = length^2
125 = length^2
Find the square root of both sides
√125 = √length^2
11.18 = length
Approximately
Length = 11.2 ft
Solve for y.
-2 = y – 14
-2
how many rays can you name using the points shown?
Answer:
3
Step-by-step explanation:
BC
AC
BA
c - 2.3 = - 5.1
C = ???
An is a mathematical statement that shows two expressions are equal using an equal sign.
No! Because a mathematical statement is actually a statement that is either true or false not a statement that shows two expressions are equal using an equal sign!
Answer:
fix the awser
Step-by-step explanation:
a rectangle with vertices located at (-3, -4), (-3, 7), (12, -4), and (12, 7). What is the length of each of the longer sides of the rectangle?
rectangle area: length x width
multiply each x-axis with the y-axies then find the mean average
Answer:
length: 15 units
Step-by-step explanation:
A plot of land is valued at $18,000.Land tax is charged at the rate of 0.70 per $100. What is the total amount of tax paid for the land?
Answer:
The total amount of tax paid for the land was $126
Step-by-step explanation:
Proportions
The land tax charged is 0.7 per each $100 of the land value. For easy calculations, we find the ratio or proportion to be applied to the value of the land as:
0.7 / 100 =0.007
This factor can be used to obtain the tax charged for a given value of the land.
The plot of land of the question is valued at $18,000.
The tax charged is, then:
0.007*18,000 = 126
The total amount of tax paid for the land was $126
can someone help me I will give 30 points
Answer:
40.
Step-by-step explanation:
Look on the graph under minutes and go to minute one and in one minute it can make forty. just go straight up to until you reach the line.
Can I have brainlliest? Hope it helps.
Answer:
30
Step-by-step explanation:
the model shows the expression of 30+12 whitch expression is equivelent to this sum
Answer:
6+5]4
Step-by-step explanation:
It takes 12 men 5 days to complete a job
Work out how many days it would take 3 men to complete the same job
Answer: 8
Step-by-step explanation: i took the test
1.25 days would be taken for 3 men to complete the same job.
What is Ratio?A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0.
Given that 12 men 5 days to complete a job
We have to find for how many days three men can complete the same job.
Let x be the time taken by 3 men to complete the job.
Formulate a proportional equation.
12/5=3/x
Apply cross multiplication
12x=15
Divide both sides by 12
x=15/12
both 15 and 12 are multiples of 3
x=5/4
x=1.25
Hence, 1.25 days would be taken for 3 men to complete the same job.
To learn more on Ratios click:
https://brainly.com/question/13419413
#SPJ2
I have no idea what to do here please help
Answer:
m = 5
m = -3
m = 1/6
m = 2/7
m = -8/3
Please help and thank you for helping me out
Step-by-step explanation:
1. d=30
2. b=8
3. n=-7
5. v=17
6.x=-13
7. b=48
The length of one side of a square table is 3ft. What is the area of the table?
Answer: 9 sq. ft
The area of a square is: A = a²
A = 3²
A = 9
Plz mark brainliest:)
Can someone please help me with this
Answer:
8 and 7, I think...
Step-by-step explanation:
keep it up
Supplementary means that the 2 angles add up to 180 degrees. This means that angles 7 + 8 are supplementary
PLZ HELP with this problem
Leah combines 6.54 ounces of strawberries with 6.09 ounces of blueberries to make fruit bowls. She pours the fruit equally into 3 bowls, and has 1.68 ounces of fruit left over. How many ounces of fruit are in each bowl?
Answer:
4.21 Ounces
Step-by-step explanation:
You first want to add 6.54 to 6.09 getting you an answer of 12.63 then you want to divide that by 3 which gets you an answer of: there are 4.21 ounces in each bowl.
i need help on math
what is 32% of 65?????????????????????????????????????
Answer:20.8 is the correct answer
Step-by-step explanation:asked Siri
Jake's solution to the equation −4(2x−3)=36 is shown below.
Answer:
x=-3
Step-by-step explanation:
I hope this help.
Blank to division problems must be interpreted correctly to answer real life problems.
Answer:
i agree
Step-by-step explanation:
Answer:
possibly " remainders "
Step-by-step explanation:
hope this helps <3
Pls someone help me please
2
1
3
5/8 = 0.625
1/3 = 0.3333...
17/24 = 0.70833333
If g(x) is the inverse of f(x), what is the value of f(g(2))?
Answer:
2
Step-by-step explanation:
took it on edg