Answer: 75°
Step-by-step explanation:
ALL TRIANGLE ANGLES MUST ADD UP TO 180°
Take 50°+55°=105°
Now take 180°-105°
75°
Answer:
75 degrees
Step-by-step explanation:
a Triangle is 180 degrees all together, so you add 50+55=105
you subtract 180-105=75 degrees
Select the best real-world situation that can be represented by 15 + c = 19.50. Then solve the equation and describe what your answer represents for the problem situation.
A Mary wants to buy flowers and perfume. She has $19.50 to spend but has already spent $15 on perfume. How much does she have left to spend on flowers?
B Rachel earns $15 per hour. How long does it take her to earn $19.50?
C Sarah has $15 in her checking account but has written a check for $19.50. How much is she overdrawn?
D Jane has $19.50 to spend. How many roses can she buy if they are $15 each?
Answer:
a
Step-by-step explanation:
15+c=19.50
c=19.50-15
=4.5
Answer:
A) She has left $4.50 to spend on flowers.
Step-by-step explanation:
15+c=19.50
c=19.50-15=4.50
I need help with this
Answer:
n = √3
m = √3
Step-by-step explanation:
The triangle is an isosceles right triangle with 2 equal base angles of 45° each.
Thus:
Reference angle = 45°
Hypotenuse = √6
Opposite = m
Adjacent = n
✔️To find m, apply the trigonometric function SOH, we have:
Sin 45 = opp/hyp
Sin 45 = m/√6
√6 × 1/√2 = m (sin 45 = 1/√2)
√6/√2 = m
√(6/2) = m
√3 = m
m = √3
✔️To find n, apply the trigonometric function, CAH:
Cos 45 = adj/hyp
Cos 45 = n/√6
√6 × √2/2 = n (cos 45 = √2/2)
√12/2 = n
√(4*3)/2 = n
(2√3)/2 = n
√3 = n
n = √3
What is the measure of Zx?
Answer:
x= 63
Step-by-step explanation:
x + 65 = 128
x = 128 - 65
= 63
I hope im right!!
There were five teams entered in a competition. Each team consisted of either only boys or only girls. The number of team members was 9, 15, 17, 19 and 21. After one team of girls had been knocked out of the competition, the number of girls still competing was three times the number of boys. How many girls were in the team that was eliminated?
Answer:
21.
Step-by-step explanation:
Since there were five teams entered in a competition, and each team consisted of either only boys or only girls, with the number of team members being 9, 15, 17, 19 and 21 members, if after one team of girls had been knocked out of the competition, the number of girls still competing was three times the number of boys, to determine how many girls were in the team that was eliminated, the following calculation must be performed:
9 + 15 + 17 + 19 = 60/4 = 15
9 + 15 + 17 + 21 = 62/4 = 15.5
9 + 15 + 19 + 21 = 64/4 = 16
9 + 17 + 19 + 21 = 66/4 = 16.5
15 + 17 + 19 + 21 = 72/4 = 18
Thus, since 15 x 3 equals 45, and 45 plus 15 equals 60, the number of girls on the team that was eliminated was 21.
Work out the size of angle DEF, giving a reason for your answer.
F
150°
OEF
Answer:
angle DEF = 75 degrees
Step-by-step explanation:
angle DOF = 150 degrees, then arc DF also = 150 degrees
angle DEF = 1/2 arc DF = 75 degrees
Can some one do this for me I’m little not smart
Answer:number 5 is 21x−28
Step-by-step explanation:
Julie ran a race 2 minutes faster then Teri did. If Julie ran the race in 28 mins, which equation can be used to find the number of minutes, m, it took Teri to run the race
Answer: X=28+2
Step-by-step explanation:
We can make value Teri's time our X value so if Julie ran faster the Teri by 2 minutes and we know that her total time was 28 minutes then we can say X= 28+2
A copy maching makes 24 copies per minute how many copies does it make in 4 minutes and 45 seconds
can someone help pls
I think its A. translation, translation
Morgan painted 3 faces in 12 minutes at the Spring Festival. At this rate, how many faces can she paint
in 40 minutes?
A10
B15
C8
D12
Answer:
A
Step-by-step explanation:
9.
An object accelerates. 5.0 m/s2 when a force of 20.0 newtons is applied to it.
What is the mass of the object?
m = 4.00 kg
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityPhysics
Newton's Law of Motions
Newton's 1st Law of Motion: An object at rest remains at rest and an object in motion stays in motion Newton's 2nd Law of Motion: F = ma (Force is equal to [constant] mass times acceleration) Newton's 3rd Law of Motion: For every action, there is an equal and opposite reaction Step-by-step explanation:Step 1: Define
[Given] F = 20.0 N
[Given] a = 5.0 m/s²
[Solve] Mass m
Step 2: Solve for m
Substitute in variables [Newton's 2nd Law of Motion]: 20.0 N = m(5.0 m/s²)[Division Property of Equality] Divide 5.0 on both sides: 4.00 kg = mRewrite: m = 4.00 kg1. 1 + 1
2. 2+2
3. 3 + 3
Step-by-step explanation:
1+1 = 2 2+2 = 4 3+3 = 6Hope it helps :)❤
Answer:
1.2
2.4
3.6
1+1=2
Is my answer choice correct ?
Answer:
Yes that's correct
Answer:
Looks like the answer selected in the attachment looks good
Step-by-step explanation:
PLEASE HELP!!! WILL GIVE BRAINLIEST.
(50x - 85) / 9 + 48 = 83
x = ?
Answer:
x=8
Step-by-step explanation:
the step by step is in the snapshot of my notes which i attached to this!! brainliest please??
-1. A coffee shop spends $400 for an order of 20 cases of paper cups. How much is
one case of paper cups? Write and solve an equation.
Answer:
$20
Step-by-step explanation:
400/20=20
In a random sample of 850 high school students in large metropolitan areas, 768 said they had access to the internet during school hours. In an independent random sample of 355 high school students in rural communities, 308 said they had access to the internet during school hours. What is the p-value for a significance test to determine if these data provide evidence that the proportion of high school students in metropolitan areas who have internet access during school hours is different than the proportion of rural high school students who have internet access during school hours?
Answer:
Since the calculated value of z= 1.869 does not fall in the critical region we accept the null hypothesis H0: p1≠ p2 the data provides evidence that the proportion of high school students in metropolitan areas who have internet access during school hours is different than the proportion of rural high school students who have internet access during school hours.
Step-by-step explanation:
Let p1= proportion of the high school students having internet access
p2= proportion of the rural school students having internet access
1) The null and alternate hypothesis are
H0: p1≠ p2 against the claim Ha: p1= p2
2) We choose significance level ∝ =0.05
3) The test statistic under H0 is
z= p1^- p2^/√ p^q^( 1/n1 + 1/n2)
Now
p1^= 768/850= 0.9035
p2^= 308/355= 0.8670
p^= 768+ 308/850+ 355= 1076/1205
p^= 0.8929
q^= 1-p^= 0.1070
Putting the values
z= p1^- p2^/ √p^q^( 1/n1 + 1/n2)
Z= 0.9035-0.8670/sqrt [0.8929*0.1070( 1/850 + 1/355)]
z= 0.0365/ sqrt [ 0.0955403 (0.001176 + 0.002816)]
z= 0.0365/ 0.019531
z= 1.8688
The critical region is z∝/2 = ± 1.96
The value of z is 1.8666. The value of p is 0.06148 which is greater than 0.05
Conclusion:
Since the calculated value of z= 1.869 does not fall in the critical region we accept the null hypothesis H0: p1≠ p2 the data provides evidence that the proportion of high school students in metropolitan areas who have internet access during school hours is different than the proportion of rural high school students who have internet access during school hours.
A triangle has sides xcm, (x + 4) cm and 11cm, where x is a whole number of cm. if the perimeter of the triangle is less than 32cm. find the possible values of x
9514 1404 393
Answer:
{4, 5, 6, 7, 8}
Step-by-step explanation:
The inequality related to the perimeter is ...
x +(x +4) +11 < 32
2x < 17 . . . . . . . . . . . . subtract 15
x < 8.5
The inequality related to the triangle inequality is ...
(x) +(x +4) > 11
2x > 7
x > 3.5
Then possible whole-number values of x are ...
{4, 5, 6, 7, 8}
Answer:
{4, 5, 6, 7, 8}
Step-by-step explanation:
Explanation is...
plessssssssssssssssssssss hellllp me
Answer: 3m = 120, 40 minutes
Step-by-step explanation:
3m = 120 (since she works out 3 times a week for a total of 120 minutes)
to solve, divide both sides by 3
m = 40
PLLLZ HELP!! WILL MARK BRAINLIEST!!
What is the area of the figure?
Answer:
390 cm^2
Step-by-step explanation:
15 x 20 = 300
1/2(12 x 15) = 90
Answer:
390 cm^2
Step-by-step explanation:
What is an equation of the line that passes through the point (3,-1)(3,−1) and is parallel to the line 5x+3y=65x+3y=6?
Answer:
6yx hope this helped dude!
Step-by-step explanation:
Answer:
6yx
Step-by-step explanation:
Pls pls pls I literally mark you brainliest
Your Answer:
what type of question is this?
PLS HELP: Harry read a number of books over the summer. Make a histogram to show the
books he read by page length. Which length of book did he read the most?
number of pages: 452 409 355 378 390 367 375 514 389 438 311 411 376
Answer:
he read the things in the 350-390 area mostly, i dont know if this helps.
Step-by-step explanation:
Two coffees and two muffins cost a total of 16 dollars. Two coffees and four muffins cost a total of 20 dollars. What is the individual price for a single coffee and a single muffin?
(A) DEFINE THE VARIABLES:
(B) EQUATIONS:
(D) QUESTIONS:
i) What is the cost of a coffee?
ii) What is the cost of a muffin?
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Actually Welcome to the Concept of the variables and linear equation.
let the cost of coffee be x and cost of muffin be y.
=> Let the first equation be => 2x + 2y = 16
=> Let the second equation be => 2x + 4y = 20
let's, reduce first eqn ==> x + y = 8 , then x = y-8
now we substitute value of x in second equation,
2(8-y) + 4y = 20
==> -2y + 4y +16 = 20.
==> 2y = 4
==> y = 2
hence, now x = 8-2 ==> 6 ,
so the cost of a Coffee = 6
cost of a muffin = 2
Cost of a muffin = 6
URGENT!!
given= L1≈L4
prove= L2 ≈ L3
what are the statements and reasons
Answer:
<2≅<3 Given
<2≅<1 verbally opposite angle are equal
<3≅<1 since <2≅<3
<4≅<3 verbally opposite angle are equal
<1≅<4 since <3≅<1
Step-by-step explanation:
have a nice day/night bye!!!
Last year, Rebecca received a grant of g dollars for school. This year she received $6000 plus five-months of last years amount
Answer:
whats the question there no question.
Step-by-step explanation:
What is 1/2 + 1/6, please explain, I'm very bad at math
Answer:
Before adding, we need to make sure the denominators are the same. We can do so by multiplying the fraction by a common multiple. In this case, 3 is a multiple of 6, so we can change 1/2 to 3/6. 3/6 is still equal to 1/2, so nothing changes.
Now we have 3/6+1/6, which is 4/6 (add the numerator).
4/6 can be simplified to 2/3 and 2 is a multiple of 4 and 6.
So, therefore, the answer is 2/3.
graph the function f(x)= 2(1/2)^x
Answer:
Step-by-step explanation:
Answer:
Step-by-step explanation:
Help me please 30 points
What would be the TSA (Total Surface Area)?
Answer:
B (133 square meters)
A.) all real numbers
B.) y>6
C.)y is greater than or equal to -6
D.)x= √6 or -√6
Answer:
C.) y is greater than or equal to -6
Step-by-step explanation:
The range are all the set of y-values that are plotted on the vertical axis (y-axis).
The range starts from -6 and above. Which is y ≥ -6
Therefore, range of the function is said to be:
C.) y is greater than or equal to -6