What is the value of x?
Answer:
90
Step-by-step explanation:
Answer:
x=95 degrees
Step-by-step explanation:
All of the angles in a triangle add up to 180, so 45+50+(180-x)=180.
Open the parenthesis, and you get 45+50+180-x=180.
Then subtract 180 from both sides, so 45+50-x=0.
Simplify that to 95-x=0, and add x to both sides.
x=95
Also, you can use exterior angles theorem, which states that 45+50=x.
That's the shorter way.
In a video game, players form teams and work together to earn as many points as possible for their team. Each team can have between 2 and 4 players. Each player can score up to 20 points in each round of the game. Han and three of his friends decided to form a team and play a round. Match each expression or inequality to the quantity that it represents.
Answer:
20 times 4
Step-by-step explanation:
Han's team has 4 players.
A perfect score is the maximum possible score. Each player can score up to 20 points in each round, so 20 points is the maximum score.
If each of the 4 players scores 20 points, then the total score for the team is:
20 *4
That is the expression for the team's points.
Answer: 20*4
A number is divided by four. The result is added to five. This result ismultiplied by three to give 27. What is the number?
A. 16
B. 20
C. 1
D. 3 1/2
A radio station requires DJs to play 4 commercials for every 36 songs they play. What is the unit rate of songs to commercials?
Answer:
The correct answer for this question is that the unit rate is 5:1.
Step-by-step explanation:
We can work this out by simplifying down the 2 commercials to every 10 songs ration, so that 10:2 becomes 5:1. We can work this out by halving the original ratio to simplify it.
write an equation in slope-intercept form for the graph shown (i will give brainliest whoever gets it right)
Answer:
y=-3x+2
Step-by-step explanation:
There are 10 lanes in the bowling alley where Harold bowls. He wants to make a
scale drawing of the bowling alley using a scale of 3 cm to 15 ft. One lane,
including gutters, is 60 ft long and 5 ft wide. What will the width of all 10 lanes on
his drawing be?
please help this is urgent!! provide good for explanation✨
Answer:
10cmStep-by-step explanation:
Given that the scale of the drawing is 3 cm to 15 ft.
This means that, every 15ft in the drawing will be represented by 3cm.
also there are a total of 10 lanes
given that the width of one lane is 5ft, the ten will be 5*10= 50ft
Now how many 15ft are there in 50ft= 50/15= 3.33
now in cm = 3.33*3=10cm
therefore on the drawing the width will be 10cm
You hang two strings of decorative lights. Strand 1: changes between red and blue every 15 seconds. Strand 2: changes between green and gold every 18 seconds. Both strands just changed color. After how many seconds will the strands change color at the same time again?
Answer:
The strands change color at the same time again after 90 seconds
Step-by-step explanation:
We are told:
Strand 1: changes between red and blue every 15 seconds.
Strand 2: changes between green and gold every 18 seconds.
To solve for this question, we use the LCM method.
Step 1
List multiples of each number until the first common multiple is found.
Multiples of 15:
15, 30, 45, 60, 75, 90, 105, 120
Multiples of 18:
18, 36, 54, 72, 90, 108, 126
Therefore,
LCM(15, 18) = 90
The first common multiple is 90, and this is the lowest common multiple.
Therefore, the strands will change color at the same time again after 90 seconds.
Multiply 5(−37). Simplify your answer.
− -2 1/7
− 5/33
2 1/7
5/35
Answer:
A. -2 1/7Step-by-step explanation:
Given the expression 5(-3/7)
On simplifying, we have:
[tex]= 5 \times \frac{-3}{7}\\ \\= \frac{5 \times -3}{7}\\ \\= \frac{-15}{7}[/tex]
Express as a mixed fraction
[tex]= \frac{-15}{7}\\= -2 \frac{1}{7}[/tex]
Hence the correct answer is -2 1/7
Farmer Janet can plant 9 feet of carrots in 15 minutes while her daughter Amy can plant 17 feet of carrots in half an hour. what is each persons unit rate of feet of carrots per hour
Answer:
janet can plant 36 per hour Amy can plant 34per hour
Step-by-step explanation:
Answer:
Janet's is 36 feet of carrots per hour
Amy is 34 feet of carrots per hour
Step-by-step explanation:
for Janet I did 60÷15=4(thqt is one hour) then 9×4=36 which is the answer
for Amy I did 17×2=34 because she does 17 in 40 mins which is half an hour so you would double to make it one hour
Help me please) Bro Im dumb Help
Answer:
The answer is 69 degrees.
Step-by-step explanation:
All you have to do is take the higher temperature and subtract it by the lower one.
the area of a square garage is 121 square feet. will it fit a car that measures 13 feet long? explain
Answer:
It won't because the area is length times height. So 11 x 11. So some of the car will be hanging out of the garage.
Step-by-step explanation:
Sofia and Manuel are purchasing a home. They wish to save money for 15 years and purchase a house that has a value of $200,000 with cash. If they deposit money into an account paying 5% interest, how much do they need to deposit each month in order to make the purchase? Round your answer to the nearest cent, if necessary.
Answer:
Monthly deposit= $745.76
Step-by-step explanation:
Giving the following information:
Future Value (FV)= $200,000
Number of periods= 15*12= 180 months
Interest rate= 0.05/12= 0.0042
To calculate the monthly deposit, we need to use the following formula:
FV= {A*[(1+i)^n-1]}/i
A= monthly deposit
Isolating A:
A= (FV*i)/{[(1+i)^n]-1}
A= (200,000*0.0042) / [(1.0042^180) - 1]
A= $745.76
.
If a shape is a square, then it is a rhombus.
Answer:
Yes every square is a rhombus, but not every rhombus is a square
Step-by-step explanation:
Solve for x and y in the triangles.
(please help me I will pick brainly)
Answer:
52
38
Step-by-step explanation:
x-6=8 what’s the answer please it’s 9th grade algebra
Answer:14
Step-by-step explanation:
X-6=8
+6. +6
X=14
GameStop has a sale on video games, all games are 30% off. If the Division is originally $50, what is the sale price?
Find an equivalent fraction for the decimal: .57
sk
The value of x is at most 450.
a
x 450
c
x ≤ 450
d
x ≥ 450
Answer:
Junior PSAT
Training Packet
2016-17
Math Department
Answer Key
Section 3: Math Test — No Calculator
QUESTION 1.
Choice C is correct. Subtracting 6 from each side of 5x + 6 = 10 yields 5x = 4.
Dividing both sides of 5x = 4 by 5 yields x =
_4
5
. Te value of x can now be
substituted into the expression 10x + 3, giving 10 ( _4
5 ) + 3 = 11.
Alternatively, the expression 10x + 3 can be rewritten as 2(5x + 6) − 9, and
10 can be substituted for 5x + 6, giving 2(10) − 9 = 11.
Choices A, B, and D are incorrect. Each of these choices leads to 5x + 6 ≠ 10,
contradicting the given equation, 5x + 6 = 10. For example, choice A is
incorrect because if the value of 10x + 3 were 4, then it would follow that
x = 0.1, and the value of 5x + 6 would be 6.5, not 10.
QUESTION 2.
Choice B is correct. Multiplying each side of x + y = 0 by 2 gives 2x + 2y = 0.
Ten, adding the corresponding sides of 2x + 2y = 0 and 3x − 2y = 10 gives
5x = 10. Dividing each side of 5x = 10 by 5 gives x = 2. Finally, substituting
2 for x in x + y = 0 gives 2 + y = 0, or y = −2. Terefore, the solution to the
given system of equations is (2, −2).
Alternatively, the equation x + y = 0 can be rewritten as x = −y, and substituting x for −y in 3x − 2y = 10 gives 5x = 10, or x = 2. Te value of y can then
be found in the same way as before.
Choices A, C, and D are incorrect because when the given values of x and
y are substituted into x + y = 0 and 3x − 2y = 10, either one or both of the
equations are not true. Tese answers may result from sign errors or other
computational errors.
QUESTION 3.
Choice A is correct. Te price of the job, in dollars, is calculated using
the expression 60 + 12nh, where 60 is a fxed price and 12nh depends on the
number of landscapers, n, working the job and the number of hours, h, the job
takes those n landscapers. Since nh is the total number of hours of work done
when n landscapers work h hours, the cost of the job increases by $12 for each
hour a landscaper works. Terefore, of the choices given, the best interpretation
of the number 12 is that the company charges $12 per hour for each landscaper.
Choice B is incorrect because the number of landscapers that will work each
job is represented by n in the equation, not by the number 12. Choice C is
incorrect because the price of the job increases by 12n dollars each hour,
which will not be equal to 12 dollars unless n = 1. Choice D is incorrect
because the total number of hours each landscaper works is equal to h. Te
number of hours each landscaper works in a day is not provided.
QUESTION 4.
Choice A is correct. If a polynomial expression is in the form (x)2
+ 2(x)(y) +
(y)2
, then it is equivalent to (x + y)2
. Because 9a4
+ 12a2
b2
+ 4b4
= (3a2
)2
+
2(3a2
)(2b2
) + (2b2
)2
, it can be rewritten as (3a2
+ 2b2
)2
.
Choice B is incorrect. Te expression (3a + 2b)4
is equivalent to the product
(3a + 2b)(3a + 2b)(3a + 2b)(3a + 2b). Tis product will contain the term
4(3a)3
(2b) = 216a3
b. However, the given polynomial, 9a4
+ 12a2
b2
+ 4b4
,
does not contain the term 216a3
b. Terefore, 9a4
+ 12a2
b2
+ 4b4 ≠ (3a + 2b)4
.
Choice C is incorrect. Te expression (9a2
+ 4b2
)2
is equivalent to the
product (9a2
+ 4b2
)(9a2
+ 4b2
). Tis product will contain the term (9a2
)
(9a2
Answer:
that looks hard
Step-by-step explanation:
b
Luke has a situation on his hands. A pipe in his house froze and cracked from cold weather. Now he has a water leak. The leak has been releasing of a liter of water every 2 hours. If w represents the amount of water lost and h represents the number of hours, which equation represents this proportional relationship?
Answer:
1/2h=W
Step-by-step explanation:
1 liter/2 hours
1/2 liter/hour
W=Amount of water lost
H=hours
Answer:
w=1/3h
Step-by-step explanation:
Solve.
5
2x+
1
2x=5
1
2+
7
2x
The value of x is
Answer:
-64
Step-by-step explanation:
Evalúa 50 + cd cuando c 1 yd = 15. 5 Atorado? Ve un video o usa una pista.
In each of the four relations below, the x values represent inputs and the y values represent the corresponding outputs. Which relation does not represent a function? * A) { (-2, -3), (1, 3), (3, -3), (5, 3) } B) { (-1, -5), (2, 4), (3, 7), (4, 10) } C) { (-2, 3), (1, 3), (3, 3), (5, 3) } D) { (3, 4), (4, 5), (3, -4), (4, -5) }
Given:
In each of the four relations below, the x values represent inputs and the y values represent the corresponding outputs.
To find:
The relation which does not represent a function.
Solution:
A relation is a function if there exist a unique output for each input.
In options A, B and C, we get unique output for each input.
In option D, we get two outputs y=4 and y=-4 for input x=3.
Since, there exist more than one output values for a single input value, therefore it is not a function.
Therefore, the correct option is D.
Jada is putting a border around her rectangular garden. The garden is 12.63 meters long and 3.28 meters wide.
This image shows a rectangular garden having a length of 12.63m and width of 3.28m.
Part A
Jada estimates the perimeter of her garden by rounding the length and width to the nearest whole number. Which equation shows her estimate?
A. 10 + 5 + 10 + 5 = 30 meters
B. 12 + 3 + 12 + 3 = 30 meters
C. 13 + 3 + 13 + 3 = 32 meters
D. 13 + 4 + 13 + 4 = 34 meters
Part B
Jada also estimates the perimeter of her garden by rounding the length and width to the nearest tenth. Which equation shows this estimate?
A. 12.6 + 3.2 + 12.6 + 3.2 = 31.6 meters
B. 12.6 + 3.3 + 12.6 + 3.3 = 31.8 meters
C. 12.5 + 3.5 + 12.5 + 3.5 = 32 meters
D. 12.7 + 3.3 + 12.7 + 3.3 = 32 meters
Part C
What is the exact perimeter of Jada’s garden? Enter your answer in the box.
meters
Part D
Select words or numbers from the drop-down menus to explain which estimate is closer to the exact perimeter.
The numbers rounded to the nearest
Choose...
are closer because
Choose...
is closer to the exact perimeter than
Choose...
.
Answer/Step-by-step explanation:
Length of rectangular garden = 12.63 m
Width of rectangular garden = 3.28
Part A: Perimeter of garden if the length and height is rounded to nearest whole number.
12.63 rounded to nearest whole number = 13
3.28 rounded to nearest whole number = 3
Equation that shows her estimate would be: C. 13 + 3 + 13 + 3 = 32 meters
Part B: Perimeter of garden if the length and height is rounded to nearest tenth.
12.63 rounded to nearest tenth = 12.6
3.28 rounded to nearest tenth = 3.3
Equation that shows this estimate would be: B. 12.6 + 3.3 + 12.6 + 3.3 = 31.8 meters
Part C: Exact Perimeter of her garden.
Exact perimeter would be 12.63 + 3.28 + 12.63 + 3.28 = 31.82 meters
Part D:
Difference between 31.82 and the exact perimeter is 0.02, while difference between 32 and the exact perimeter is 0.18.
Therefore:
The numbers rounded to the nearest TENTH are closer because 31.8 meters is closer to the exact perimeter than 32 meters.
look at the picture .
Answer:
the answer is c
Step-by-step explanation:
7(2+5x)=3x+14
14+35x=3x+14
35x-3x=14-14
32x=0
32x 32x X=0
.In a fruit basket, there are 8 bananas and 4 apples. What is the unit rate for bananas to apples?
Answer:
2:1
Step-by-step explanation:
Answer:
2 bananas per apple
Step-by-step explanation:
Name the property illustrated by the equation.
-6xy + 0 = -6xy
Answer:
identity
Step-by-step explanation:
Answer:
identity
Step-by-step explanation:
2m - 7 + m = 10 + 3m
Answer:
no solutionStep-by-step explanation:
2m - 7 + m = 10 + 3m
3m - 3m = 10 + 17
0 = 17
therefore, there is no solution
Answer: no solution
Like the other answer said, no solutions avaliable.
mr.ortega sandwich shop sells and 6 inch sandwich for 3.30 and a 12 inch sandwich for 7.20 he wants to find out which sandwich is the better deal
Answer:
the 6 inch is a better deal because it is 55 cents per inch while the 12 inch is 60 cents per inch
Evaluate the algebraic expression.
10C - 7 x 11
C = 9
Answer:
90-77=13Step-by-step explanation:
so yeah I guess
Write 25/60 and 8/20 as fractions in simplest form. Then determine whether the ratios form a proportion
Answer:
8/20= 4/5
25/60= 5/12
Step-by-step explanation:
8÷4
Answer:
25/60 = 5/12
8/20 = 2/5
The Ratios do not form a proportion
Step-by-step explanation:
25/60:
25 ÷ 5/60 ÷ 5
= 5/12
8/20:
8 ÷ 4/20 ÷ 4
= 2/5
5/12 ≠ 2/5
The ratios are not proportional.
