Answer:
[tex]\frac{7\pi }{6} ; \ \frac{3\pi }{2} ; \ \frac{11\pi }{6}.[/tex]
Step-by-step explanation:
if 1=sin²Q+cos²Q, then cos²Q=1-sin²Q, then
2sin²Q+3sinQ+1=0;
[tex]\left[\begin{array}{ccc}sinQ=-1\\sinQ=-0.5\end{array} \ => \ \left[\begin{array}{ccc}Q=3\pi/2+2\pi *n\\Q=(-1)^n*\frac{7\pi }{6}+\pi n \end{array}[/tex]
on the interval Q=3π/2 (from the 1st equation) and Q=7π/6; 11π/6 (from the 2d equation).
. If you could put a sealed room on a very sensitive scale and open a thousand soft drink
cans inside it, would the mass reading on the scale go up, go down, or stay the same?
Explain your answer.
Answer:
I think it would go up on the scale.
Step-by-step explanation:
I believe it would go up, because think about air in your mouth. If you close your mouth and add more air, your mouth gets heavier to carry. Therefore, the air needs to go somewhere. Same with carbonated soft drinks, like soda.
Please mark me Brainliest! I only need 4 more! Thank you so so much!
Leo has $28 to spend on pencils and paper for a school. Pencils cost $0.50 each and paper cost $1.50 each. Using x for pencils, and y for paper, write an inequality that represents what Leo can buy.
Answer:
Please mark Brainliest if helpful...
0.5x+1.5y[tex]\leq[/tex]28
Step-by-step explanation:
X is the number of pencils, so multiply the price of one pencil by the number of them to get the total price of pencils-0.5xY is the number of paper, so multiply the price of one paper by the number of them to get the total price of paper-1.5yLeo has $28, so he can either spend $28 or less on pencil and paper, which means that his total cost should be less than or equal to 28Is this relation a function? Justify your answer.
Please help me!! 5:56pm as soon as you can! I could maybe help you with a problem!
Answer:
C. No because two points with the same x-value have different y-values
Step-by-step explanation:
The lengths of the sides of a quadrilateral are 4 consecutive even integers. The perimeter of the quadrilateral is 36 inches. What is the length of the longest side?
Answer:
Step-by-step explanation:
Help
Please answerrrrrrr.
Answer: 1. True 2. False
Step-by-step explanation: In question 1 they both equal 0.25 (5/20 and 7/28) but in question 2 they equal different values. 11/22=0.5 and 13/25 = 0.52.
Order the steps to show how to solve the equation 2(4x−11)+9=19.
Answer:
x=4
Step-by-step explanation:
Distribute the 2 -> 2(4x−11)+9=19 -> 8x-22+9=22
Combine Like Terms -> 8x-13=19
Add 13 to Both Sides -> 8x=32
Divide Both Sides by 8 -> x=4
This is my my second to
last one, thanks for helping me
9514 1404 393
Answer:
$9Option 4Step-by-step explanation:
The equations need to match the problem statements. If we let C and S represent the costs of Cherry and Sweet potato pies, respectively, then the revenue from each sale can be expressed as an equation.
1 cherry and 7 sweet potato for $114 ⇒ C +7S = 114
14 sweet potato and 11 cherry for $309 ⇒ 11C +14S = 309
Note that we have used C and S in the second equation in the same order as they appeared in the first equation, even though the problem statement has that order reversed. This facilitates solving the equations using elimination or Cramer's rule.
These equations match Option 4.
__
The cost of a cherry pie can be found by eliminating S from the equations. We can do that by subtracting twice the first equation from the second:
(11C +14S) -2(C +7S) = (309) -2(114)
9C = 81 . . . . . simplify
C = 9 . . . . . . . divide by 9
The cost of each cherry pie is $9.
Haley walked a total of 6 kilometers by making 2 trips to school. How many trips will Haley
have to make in all to walk a total of 18 kilometers? Solve using unit rates.
Answer: 6 trips
Step-by-step explanation:
"Six more than a number doubled is equal to twice a
number plus three"
Given parameters:
This is a word problem. To solve problems, it is best to interpret sentence by sentence;
Six more than a number doubled;
let the number = y ;
so we have 2(y + 6)
equal =
twice a number plus three;
let the number be Z;
2Z + 3
The complete expression is thus; 2(y + 6) = 2Z + 3
A diagram of a swimming pool is shown.
3.5 m
What is the approximate circumference of the swimming pool? Use 3.14 as an estimate for t.
Ο Α. 7 m
Ο Β. 11 m
Ο Ο Ο Ο
Ο C. 22 η
O D. 28 m
Answer:
B. 11
Step-by-step explanation:
Im good with a Scientific calculator.
Find an equation of the vertical line through (-4,3)
Answer:
x=-4
Step-by-step explanation:
Vertical lines are of the form
x =
The x coordinate is -4
x=-4
Ryan picked 7 apples.David picked 4 times as many apples.How manyapples did he picked
Answer:
28
Step-by-step explanation:
7*4
how do you solve
x2 - 4xy + 4y
Answer: x2-4xy+4y=2xy-5y+2y
Step-by-step explanation:
how many quarts are there in 20 quarts?
Answer:
20 lol??
Step-by-step explanation:
2.6 X 16 fourth grade answers
Answer:
41.6 lol
Step-by-step explanation:
During the summer, Abrielle is a cashier at a grocery store and Zane serves ice cream. To show their earnings, Abrielle makes a graph and Zane makes a table. Which statement is true?
Answer:
The slope of Zane is 18.50/2 = 9.25
Subtract both slopes to find the true statement.
10.5 - 9.25 = 1.25
The correct statement is:
Abrielle earns $1.25 more than Zane.
Answer:
what the person on the top said. Their right.
The sum of three consecutive odd numbers is 39. What is the largest of
the three numbers?
Answer:
e three integers are 11 , 13 , and 15
Step-by-step explanation:
Answer: 10
Step-by-step explanation:
An odd number is 2n+1 followed by 2n +3 and 2n+5
2n+1+2n+3+2n+5=39
6n+9=39
6n=30
n=5
5+5=10
Which is the best estimate of 90/7 divided by 1 3/4?
Answer:
7 17/49
Step-by-step explanation:
Convert mixed numbers to fractions:
= 90/7 ÷ 7/4
Apply the fraction rule:
= 90/7 * 4/7
Multiply fractions:
90 * 4 / 7 * 7
Simplify:
360/49
Convert improper fractions to mixed numbers:
= 7 17/49
What is the first step to solve 2 (x - 2)< (1 + 2) + 5
Answer:
The first step would be to distribute the 2 outside of the parenthesis
Then the left side of the equation would look like: 2x-4
Step-by-step explanation:
9514 1404 393
Answer:
add 1+2
Step-by-step explanation:
According to the Order of Operations, the first step is to evaluate expressions in parentheses. Here, there are two expressions in parentheses: (x -2) and (1 +2). The first one cannot be evaluated. So, the first step is to evaluate ...
(1 +2) = 3
Then the inequality becomes ...
2(x -2) < 3 +5
Order these numbers from least to greatest.
8.506, 8.6, 8.5612, 8.56
Answer:
It goes 8.506, 8.56, 8.5612, 8.6
Happy to Help
Arthur is building a rectangular sandbox for his son. The area of the sandbox is 17 23/32
sandbox is 3 3/8feet, what is the width of the sandbox?
Answer:
The answer is 5 1/4 feet
Which function has a constant additive rate of chan of -1/4
Answer:
y -12 21 -1.5 -11 11 -2 -10 14 -2.5 -9 17 ?
Step-by-step explanation:
Plzzzz I need help plz I will do Anything what is this problem please answer fast I am in a test thank you I need a,b,c answered
Answer:
a. 9.75
b.3/2
c.y=3/2x
Step-by-step explanation:
If a mother is 20 years old when her baby is born how old will she be when she is twice as old as her child
Answer:
40.
Step-by-step explanation:
Choose all numbers that are divisible by 2
Answer:
91066
32626
Are the only answers there
match the simplified expression to an equivalent expression 2t -9 2t-t
Answer: your trying to find an ecuagan to match the one it is saying so you can do 2t-8-3t which equals 13 just like the ecaution shown 2t-9-2t also equals 13
Step-by-step explanation: I hop this helps :D :) :) have a good day you guys/peeps
Answer:
I am wondering if this is the same problem but here anyways.
Step-by-step explanation:
Don’t understand algebra 1
Answer: Try using Symbolab (i have no idea what the answer is sry)
8sin(8x)+9=3
Need solutions
Answer:
Simplifying
8sin(8x) + 9 = 3
Remove parenthesis around (8x)
8ins * 8x + 9 = 3
Reorder the terms for easier multiplication:
8 * 8ins * x + 9 = 3
Multiply 8 * 8
64ins * x + 9 = 3
Multiply ins * x
64insx + 9 = 3
Reorder the terms:
9 + 64insx = 3
Solving
9 + 64insx = 3
Solving for variable 'i'.
Move all terms containing i to the left, all other terms to the right.
Add '-9' to each side of the equation.
9 + -9 + 64insx = 3 + -9
Combine like terms: 9 + -9 = 0
0 + 64insx = 3 + -9
64insx = 3 + -9
Combine like terms: 3 + -9 = -6
64insx = -6
Divide each side by '64nsx'.
i = -0.09375n-1s-1x-1
Simplifying
i = -0.09375n-1s-1x-1
Step-by-step explanation:
If this helps please give brainliest:)
When given a system of equations in slope-intercept form, is graphing or substitution the most efficient method to solve?
1. What is the width of a rectangle with a length of 14 cm and area 161 cm2? Formula: A=L*W
2. What is the radius of a circle with a circumference of 13 ft? Formula: C=2PI*R
3. A rectangle has a perimeter 182 in. and length 52 in. What is the width? Formula: P=2*L+2*W
4. A triangle has a base of 7 m and an area of 17.5 m2. What is the height? Formula: A=1/2*b*h
Pls Show Work
Answer:
one question at a time please