Answer:
x= -10
Step-by-step explanation:
So because the angle 55 is part of the same line as one of the unknown angles you can do 180-55 to find that first angle at the top, which is 125.
Next add all three angles (125 + x + 35 + x + 40)=180
Combine the x values to get 2x and subtract the three values from 180
Then 2x= -20, x should be equal to -10
You can plug x back into the values and check your work by adding all the values again, making it all equal to 180 degrees again
What is the perimeter of a square with a dimensions of (3x^2 +1)
Please help I need it ASAP.
Answer:
12x^2+4
Step-by-step explanation:
4(3x^2+1)
Nick and eddie are both thinking of a number. Eddies number is 3/7 of nicks number. There is a difference of 52 between their two numbers. What are the two numbers
Answer:
nick's number = 91
eddie's number = 39
Step-by-step explanation:
n = nick's number
[tex]\frac{3}{7}[/tex]n = eddie's number
[tex]\frac{7}{7}[/tex]n - [tex]\frac{3}{7}[/tex]n = 52
[tex]\frac{4}{7}[/tex]n = 52
cross-multiply: 4n = 52(7)
4n = 364
n = 364/4 = 91
eddie's number: [tex]\frac{3}{7}[/tex] · 91 = 273/7 = 39
Nick's number is 91
Eddie's number is 39
What is expression?An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division. The terms involved in an expression in math are:
Constant: A constant is a fixed numerical value.
Variable: A variable is a symbol that doesn't have a fixed value.
Term: A term can be a single constant, a single variable, or a combination of a variable and a constant combined with multiplication or division.
Coefficient: A coefficient is a number that is multiplied by a variable in an expression.
Given,
Eddie's number is 3/7 of Nick's number
Let Nick's number be x
Then Eddie's number = 3x/7
Difference of the numbers is 52
x - 3x/7 = 52
(7x - 3x)/7 = 52
4x/7 = 52
4x = 52×7
x = 364/4
x = 91
Another number = 3x/7
= 3(91)/7
= 3 × 13
= 39
Hence, 91 is Nick's number and 39 is Eddie's number.
Learn more about expression here:
https://brainly.com/question/14083225
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The length of time that it takes for a ferry to reach a summer resort from the mainland is approximately normally distributed with a mean of 2 hours and a standard deviation of 12 minutes. Over many past trips, what proportion (area) of times has the ferry reaches the island in A) less than 1 hour, 45 minutes? B) more than 2 hours, 5 minutes? C) between 1 hour, 50 minutes and 2 hours, 20 minutes?
Answer:
A) 0.10565
B) 0.33846
C)
Step-by-step explanation:
The length of time that it takes for a ferry to reach a summer resort from the mainland is approximately normally distributed with a mean of 2 hours and a standard deviation of 12 minutes.
Note that, all units must be in minutes
We solve this question using z score formula
= z = (x-μ)/σ
where
x is the raw score
μ is the population mean = 2 hours
Converting to minutes
1 hour = 60 minutes
2 hour = x
Cross Multiply
x = 2 × 60 minutes
x = 120 minutes
Mean = 120 minutes
σ is the population standard deviation = 12 minutes
Over many past trips, what proportion (area) of times has the ferry reaches the island in
A) less than 1 hour, 45 minutes?
Converting 1 hour 45 minutes to minutes
60 minutes = 1 hour
Hence:
60 + 45 minutes = 105 minutes
For x < 105 minutes
= 105 - 120/12
= -1.25
Probability value from Z-Table:
P(x<105) = 0.10565
B) more than 2 hours, 5 minutes?
Converting 2 hours 5 minutes to minutes
Hence:
1 hour = 60 minutes
2 hour = x
Cross Multiply
x = 2 × 60 minutes
x = 120 minutes
Hence:
120 + 5 minutes = 125 minutes
For x < 125 minutes
z = 125 - 120/12
z = 0.41667
Probability value from Z-Table:
P(x<125) = 0.66154
P(x>125) = 1 - P(x<125) = 0.33846
C) between 1 hour, 50 minutes and 2 hours, 20 minutes?
Converting 1 hour, 50 minutes to minutes
= 60 minutes = 1 hour
Hence:
60 + 50 minutes = 110 minutes
For x = 110 minutes
= 110 - 120/12
= -0.83333
Probability value from Z-Table:
P(x = 110) = 0.20233
Converting 2 hours, 20 minutes to minutes
= 1 hour = 60 minutes
2 hour = x
Cross Multiply
x = 2 × 60 minutes
x = 120 minutes
Hence:
120 + 20 minutes = 140 minutes
For x = 140minutes
z = 140 - 120/12
= 1.66667
Probability value from Z-Table:
P(x = 140) = 0.95221
f(x) = x² + 6x+8
What is the vertex
Answer:
(-3,-1)
Step-by-step explanation:
Help plz. Correct answer will be brainiest!!!
Answer:
a_n = 39(1.06)^(n - 1)
Step-by-step explanation:
We are told that a_n is the number of raccoons in a given n number of years.
After 6 years, there are 52 raccoons.
Also after 8 years there are 58 raccoons.
Using formula for geometric sequence, we have;
a_n = ar^(n - 1)
After 6 years, there are 52 raccoons
Thus;
a_6 = 52 = ar^(6 - 1)
ar^(5) = 52 - - - (eq 1)
Also after 8 years there are 58 raccoons. Thus;
a_8 = 58 = ar^(8 - 1)
ar^(7) = 58 - - - (eq 2)
Divide eq 1 by eq 2 to get;
(r^(7))/(r^(5)) = 58/52
r² = 58/52
r = √(58/52)
r ≈ 1.06
Put 1.06 for r in eq 1 to get;
a(1.06)^(5) = 52
1.3382a = 52
a = 52/1.3382
a ≈ 39
Thus,the explicit rule is;
a_n = 39(1.06)^(n - 1)
Darío buys applesauce cups for a family reunion. He needs 23 cups, and he buys them in packs of 6. How many packs does Dario need?
Answer:
He needs 4 packs.
Step-by-step explanation:
6*4=24 So we would need 4 packs, which gives him 24 but at least we have 23 cups.
Solve k−7≤0. Graph the solution
Answer:
k ≤ 7
Step-by-step explanation:
12 cups every 5 hours. Express this rate of flow in gallons per week
Answer:
25.2 gallons per week
Step-by-step explanation:
Solve for s.
s/3 - 4 = -2
Answer:I’m pretty sure it’s 6 correct me if I’m wrong
Step-by-step explanation:
A figure is composed of four squares of the same size and four triangles of the same size. Each square has a side length of 5.9 cm, as shown 5.9 cm 5.9 cm Which of these is closest to the area, in square centimeters, of the figure? a. 71 b. 94 С. 209 d. 278
Answer:
c
Step-by-step explanation:
A satellite photographs a path on the surface of the Earth that is 600 miles wide. Find the central angle that intercepts an arc 600 miles on the surface of the Earth (radius 3950 miles).
WILL MARK BRAINLIEST
9514 1404 393
Answer:
The central angle is about 8.7°.
Step-by-step explanation:
The relation between angle and arc length is ...
s = rθ
where r is the radius, and θ is the central angle in radians.
600 = 3950·θ
θ = 600/3950 radians = (12/79)(180°/π)
θ ≈ 8.7°
need help pls, i will give brainliest
Answer:
It is the y intercept
Step-by-step explanation:
Find the value of x.
Answer:
x=6
Step-by-step explanation:
24=4x
divide both by 4
equals 6
Answer:
to find x we have to find the similarly between the smaller and the larger triangle
the two triangle are similar by side angle side(SAS) similarly therom.
we have to see carefully that the two triangle are similar but not congruent.
Step-by-step explanation:
so the bigger triangle is twice big as the smaller.
so 24/4x =2
8x=24
x=24/8
x=3
i really need help with this im trying to get my grade up
answer this. I will giveBRAINLIEST
Answer:
Multiply both sides by 3, then subtract 6 from both sides
Step-by-step explanation:
d + 6 / 3 = 6 (multiply both sides by 3)
d + 6 = 18 (subtract 6 from both sides)
d = 12
Answer:
d+6= 18.
d= 12
multiply both sides by 3
subtract 6 from both sides
HELP ASAP I GIVE 15 POINTS AND BRAINLIEST
Answer:
110%
Step-by-step explanation:
if each square is a whole, then when one is filled, it's 100% . 10% of the other square is filled so you just add the two.
y=x+3 find the inverse
Answer:
[tex]f^{-1} (x) = x - 3[/tex]
Step-by-step explanation:
a) y = 7sin (x - 40°) + 14
describe transformation
Answer:
sorry sir i dont really know sir
????????????????????
Answer:
180 - y
Step-by-step explanation:
The exterior angle is equal to 180 minus the interior angle.
Answer:
The total angle a triangle have is 180
so now subtract it by 50
180-50 = 130
and the other angle we get is by subtracting 180-92 which is 88
y=88 degree
now x=180-(88+50)
=42
so x=42
Can someone help me with 12. and 13.
need help on this, im in geometry
Answer:
B
I believe the reason for this is the vertical line test; Different Y values must not come from the same X.
B is the only one this applies to
what is 8-4(-x+5) plz
Answer:
4x-12
Step-by-step explanation:
factor out the equation
Answer:
4 x-12
Step-by-step explanation:
Distribute
8 − 4 ( − + 5 )
8 + 4 − 2 0
Subtract the numbers
8 + 4 − 2 0
− 1 2 + 4
Rearrange terms
− 1 2 + 4
4 − 1 2
Base = 147cm2
Volume= 1323
What is the height ?
The height of the rectangular prism will be 9 cm.
What is the volume of the rectangular prism?Let the prism with a length of L, a width of W, and a height of H.
Then the volume of the prism is given as
V = L x W x H
We know that the product of the length and width will be known as the base area.
Then the volume of the rectangular prism will be
V = A x H
Base area = 147 cm²
Volume = 1323 cm³
Then the height of the rectangular prism will be
1323 = 147H
H = 9 cm
The height of the rectangular prism will be 9 cm.
The complete question is attached below.
More about the volume of the rectangular prism link is given below.
https://brainly.com/question/21334693
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Which of the following is a true statement
Which number like inequality represents n<-1?
Members of the drama club plan to present its annual spring musical. They have $1,262.50 left from fundraising, but they estimate that the entire production will cost $1,600.00.
Answer: At least 50 Tickets
Step-by-step explanation:
Since each ticket cost $6.75 each you will have to
$1,600.00-$1,262.50 = $33.75 after that you will have to
$33.75÷$6.75 =$50
Answer these two and get marked as barinliest!!!
Answer:
Step-by-step explanation:
first one A and second one C
Can someone help me please ?
9514 1404 393
Answer:
a) 720°
b) 98
Step-by-step explanation:
a) The sum of interior angles of an n-gon is (n-2)×180°. For n=6, the sum is ...
(6 -2)×180° = 4×180° = 720°
__
b) The sum of the marked angles is 622°, so the value of x is ...
x = 720 -622
x = 98
Please help.
Algebra.
what do you need help with?
Where is the question?
Please make sure to input complete.
I really need help this is due today
Answer:
p=10n
Step-by-step explanation:
You need to find how many pencils (=) and we dont know how many packs there are (n) but we do know how many there are in each pack (10)