Answer:
the answer to this question is 120km/hr
Answer:
120 km per hour
Step-by-step explanation:
150 / 1.25 = 120 km per hour
Solve by substitution: 5x+y=-13 and y=7
Answer: 4/7
Step-by-step explanation: Multiply each equation by the value that makes the coefficients of
y
opposite.
5
x
+
2
y
=
7
(
2
)
⋅
(
3
x
−
y
)
=
(
2
)
(
13
)
Simplify.
Tap for more steps...
5
x
+
2
y
=
7
6
x
−
2
y
=
26
Add the two equations together to eliminate
y
from the system.
5
x
+
2
y
=
7
+
6
x
−
2
y
=
2
6
1
1
x
=
3
3
Divide each term by
11
and simplify.
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x
=
3
Substitute the value found for
x
into one of the original equations, then solve for
y
.
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y
=
−
4
The solution to the independent system of equations can be represented as a point.
(
3
,
−
4
)
The result can be shown in multiple forms.
Point Form:
(
3
,
−
4
)
Equation Form:
x
=
3
,
y
=
−
4
Please help I need due rn
Answer:
4 3/12
Step-by-step explanation:
= 4.25 = 4 1/4 = 4 3/12
HELP ME PLEASEEEEEEEEEE
Answer: B
Step-by-step explanation: A=πr2
The formula for calculating the area of a circle is A = πr2 where pi (π) equals 3.14 and the radius (r) is half the diameter.
You must times 5 by 5 because of exponents and then times it by pie
5 times 5 = 25
25 times pie is 78.5
You’re going to need a drink with your dog. There are deals now on their soda: 12 oz - $1.29 or 14oz.- $1.49 What’s the better deal?
what's the area of a triangle, rectangle, parallelogram
Answer:
Triangle Area = ½ × b × h b = base h = vertical height
Rectangle Area = w × h w = width h = height
Parallelogram Area = b × h b = base h = vertical height
Step-by-step explanation:
:)
Answer:
area
triangle = 1/2 x base x height
rectangle = base x height
parallelogram = base x height
Step-by-step explanation:
What is 14% of 106? What is 78% of 81?
Please answer both questions.
Answer: 8. 14.84 7. 63.18
Step-by-step explanation:
The radius of a sphere is 18 feet. What is the surface area of the sphere? Express the answer in terms of pi. Recall the formula SA = 4pi 2
Answer: 1296π
Step-by-step explanation:
To find the surface are if a square, we have to use the formula:
= 4πr²
= 4 × π × 18²
= 4 × π × 324
= 1296π
Therefore, the surface area of the sphere is 1296π
Answer:
C
Step-by-step explanation:
I did the test right
solve for the indicated variable in the literal equation
Answer:
[tex]x = \frac{y}{3} - \frac{5}{3}[/tex]
Step-by-step explanation:
Given
[tex]y = 5 + 3x[/tex]
Required
Solve for x
Subtract 5 from both sides
[tex]y-5 = 5 -5+ 3x[/tex]
[tex]y-5 = 3x[/tex]
Divide through by 3
[tex]\frac{y}{3} - \frac{5}{3} = x[/tex]
[tex]x = \frac{y}{3} - \frac{5}{3}[/tex]
I need help with this
Answer:
76
Step-by-step explanation:
We know that the two angles must add up to 90 which means that
12+x-2=90
solve for x
14+x=90
x= 76
Steve is turning half of his backyard into a chicken pen. His backyard is a 24 meter by 45 m rectangle. He wants to put a chicken wire fence that stretches diagonally from one corner to the opposite corner.
How many meters of fencing will Steve need?
Answer: 12 is the awnser
Step-by-step explanation: simple math.
10 points
Michael surveyed every tenth child who entered a state fair about the number of rides they planned
on riding. What is the population for Michael's sample?
A. every tenth child who entered the state fair
B. all the people at the state fair
C. all the children at the state fair
D. every adult with children at the state fair
A
OD
Answer:
C
Step-by-step explanation:
All children at the state fair
If the diameter of the circle is 6 cm, find its circumference. [Use 3.14 for π
The circumference of the circle with a diameter of 6 cm will be 18.84 cm.
What is the circumference of a circle?It is the close curve of an equidistant point drawn from the center. The radius of a circle is the distance between the center and the circumference.
Let d be the diameter of the circle. The circumference of the circle will be given as,
C = πd units
The diameter of the circle is 6 cm. Then the circumference is given as,
C = π x 6
C = 3.14 x 6
C = 18.84 cm
The circumference of the circle with a diameter of 6 cm will be 18.84 cm.
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Point Q is graft at (N, -2). The distance from P to Q is equal to the distance from P point R. What is the distance from point P to point Q? What is the value of N? Explain how you determine the distance from point B to point Q, and the value in.
Answer:
ndndnjxhdhfjhfjdirudjfjutt
Please help me out!
The personnel department of Anna's Wholesale Bakery is preparing annual
reports on employee benefits. Hannah Prosser's gross annual salary is $29,500.
Her benefits total $8,673.25. Hannah's total annual benefits are what percent of
her annual salary?
Answer:
$32,277.80
Step-by-step explanation:
A random sample of 362 married couples found that 286 had two or more personality preferences in common. In another random sample of 556 married couples, it was found that only 32 had no preferences in common. Let p1 be the population proportion of all married couples who have two or more personality preferences in common. Let p2 be the population proportion of all married couples who have no personality preferences in common.
A) Find a 95% confidence interval for p1 and p2.
B) Examine the confidence interval in part (a) and explain what it means in the context of this problem. Does the confidence interval contain all positive, a negative or both positive and negative numbers? What does this tell you about the proportion of married couples with three personality preferences in common compared with the proportion of couples with two preferences in common (at the 95% confidence level)?
1) Because the interval contains only positive numbers, we can say that a higher proportion of married couples have three personality preferences in common.
2) Because the interval contains both positive and negative numbers, we can not say that a higher proportion of married couples have three personality preferences in common.
3) We can not make any conclusions using this confidence interval.
4) Because the interval contains only negative numbers, we can say that a higher proportion of married couples have two personality preferences in common.
Answer:
A find a 95% confidence interval for p1 and p2
Step-by-step explanation:
The answer is 1)
4. A company makes two kinds of trading cards.
Regular cards are $0.40 each and premium
cards that cost $0.65 each. A box of 25 assorted
cards sells for $14. How many of each card type
are included?
4
3
?
2
5
10
5
15
20
What is the missing number?
Answer:
i think it's 7
Step-by-step explanation:
i think the pattern is like
x + x = x
x • x = x ( • = multiplication sign)
x + x = x
Hope this helps ;-;
1. Adan and Darlene have entered the Pythagorean Lake Endurance Trial. Part of the
competition requires them to travel from Geoville, which is on the south side of the lake,
to Triple City, which is across the lake and due north of Geoville. Adan decides to ride
his scooter from Geoville to Angle Point, which is 20 miles due east of Geoville, and then
continue on to Triple City. There is a direct route that runs in a straight line for 25 miles
from Angle Point to Triple City. Adan's scooter can go no faster than 35 mph. Darlene
thinks she can beat Adan to Triple City by taking a fishing boat (average speed 12 mph)
directly from Geoville to Triple City. Who will get to Triple City first? Explain your
solution.
Answer:
Darlene will get there first
Step-by-step explanation:
I have uploaded the work
How can 38 over 6 be expressed as a decimal?
A. 5.1 with bar over 1
B. 6.1 with bar over 1
C. 6.3 with bar over 3
Answer:
B
Step-by-step explanation:
C its C hopes this helps
B. Translate each statement to an equation using k as the constant of variation.
1. m varies directly to a.
2. p varies inversely as q.
3. r varies directly as s and inversely as t.
4. z varies jointly as e and f.
5. F varies directly as the square of t.
6. The distance (d) traveled by a car varies jointly as the rate (r) and the time (t) of travel.
7. The air pressure (P) in inversely proportional to the altitude (h).
8. The amount of water pressure (P) in a closed container varies directly as the volume (V) of the
water.
9. The distance (d) of a falling body varies directly as the square of the time (t) traveled.
1
10. The stiffness (s) of a beam varies jointly as its breadth (b) and depth (d) and inversely as the
square
of its length (L).
2
Answer:
See Explanation
Step-by-step explanation:
To do this, we will make use of the following rules:
Direct Variation: [tex]a\ \alpha\ b[/tex] => [tex]a = kb[/tex]
Inverse Variation: [tex]a\ \alpha\ \frac{1}{b}[/tex] ==> [tex]a = k/b[/tex]
Joint Variation: [tex]a\ \alpha\ bc[/tex] ==> [tex]a= kbc[/tex]
Direct, then inverse variation: [tex]a\ \alpha\ b\ \alpha\ \frac{1}{c}[/tex] ==> [tex]a= kb/c[/tex]
Having highlighted the rules, the solution is as follows:
1. m varies directly to a
[tex]m\ \alpha\ a[/tex]
[tex]m =ka[/tex]
2. p varies inversely as q.
[tex]p\ \alpha\ \frac{1}{q}[/tex]
[tex]p\ = k\frac{1}{q}[/tex]
3. [tex]r\ varies[/tex] directly as s and inversely as t.
[tex]r\ \alpha\ s\ \alpha\ \frac{1}{t}[/tex]
[tex]r = k\frac{s}{t}[/tex]
4. z varies jointly as [tex]e\ and\ f.[/tex]
[tex]z\ \alpha \ ef[/tex]
[tex]z = kef[/tex]
5. F varies directly as the [tex]square\ of\ t.[/tex]
[tex]F\ \alpha\ t^2[/tex]
[tex]F = kt^2[/tex]
6. d varies jointly r and t
[tex]d\ \alpha\ rt[/tex]
[tex]d = krt[/tex]
7. P is inversely proportional to h.
[tex]P\ \alpha\ \frac{1}{h}[/tex]
[tex]P= \frac{k}{h}[/tex]
8. P varies directly as V
[tex]P\ \alpha\ V[/tex]
[tex]P=kV[/tex]
9. d varies directly as the square of t
[tex]d\ \alpha\ t^2[/tex]
[tex]d = kt^2[/tex]
10. s varies jointly as b and d and inversely as the square L
[tex]s\ \alpha\ bd\ \alpha\ \frac{1}{L^2}[/tex]
[tex]s = k\frac{bd}{L^2}[/tex]
The translation of each statement to an equation using k as the constant of variation is
1. m varies directly to a.
m = k × a
m = ka
2. p varies inversely as q
p = k / q
3. r varies directly as s and inversely as t
r = (k × s) / t
r = ks / t
4. z varies jointly as e and f.
z = k × e × f
z = kef
5. F varies directly as the square of t.
F = k × t²
F = kt²
6. The distance (d) traveled by a car varies jointly as the rate (r) and the time (t) of travel.
d = k × r × t
d = krt
7. The air pressure (P) in inversely proportional to the altitude (h).
P = k / h
8. The amount of water pressure (P) in a closed container varies directly as the volume (V) of the
water.
P = k × V
P = kV
9. The distance (d) of a falling body varies directly as the square of the time (t) traveled.
d = k × t²
d = kt²
10. The stiffness (s) of a beam varies jointly as its breadth (b) and depth (d) and inversely as the
square of its length (L).
s = (k × b × d) / L²
s = kbd / L²
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Use complete sentences to describe the relationship between the two sets A and B if ACB.
Answer:
The relationship between the two sets A and B if A ⊆ B is A is subset of B
Step-by-step explanation:
A = {1,2,3,4,5}
B = {1,2,3,4,5,6,7,8}
All Elements of set A {1,2,3,4,5} are present in set B
we relate set A and set B as A ⊆ B,which means set A is subset of set B. Symbol “⊆” is used to denote subset
So set A is subset of set B (A ⊆ B)
!! PLEASE HELP, TIMED!!Multiple choice, BRAINLIEST for correct answer
Answer:
neither!
Step-by-step explanation:
Arionna needed to graph triangle PQR reflected across the y-axis. Her work is shown below. Arionna’s Work: Blue right-arrow red. P (3,7) right arrow P prime (3, negative 7). Q (0, 4) right-arrow Q prime (0, 4). R (5, 8) right-arrow R prime (negative 5, 8). Arionna’s Graph On a coordinate plane, a red triangle has points (negative 7, 3), (negative 5, 8), (0, 4). A blue triangle has points (0, 4), (3, 7), (5, 8). Which statements identify her errors? Check all that apply. Arionna did not find the correct point for P’. She should have negated the x-value, not the y-value. Arionna did not find the correct value for Q’. All points in a reflection will move. Arionna did not find the correct value for R’. She should have negated the y-value, not the x-value. Arionna’s red triangle should be reflected below the horizontal axis rather than across the vertical axis. Arionna switched the order of the coordinates of P’ (3, –7) when she graphed them.
Answer:
A and E
Step-by-step explanation:
...
Arionna did not find the correct point for P’. She should have negated the x-value, not the y-value.
What is cartesian plane?A two-dimensional coordinate plane called the cartesian plane is what is created when the x- and y-axes cross. The origin is the place where the x-axis and y-axis meet perpendicularly.
A pair of perpendicular lines connect to create the cartesian plane, a two-dimensional coordinate plane. The term "Y-axis" refers to the vertical line, whereas "X-axis" refers to the horizontal line. The Cartesian coordinate point (x, y) indicates that the point's horizontal and vertical distances from the origin, respectively, are x and y, respectively. If x has a positive sign, the point will be to the right of the origin.
Given, Arionna needed to graph triangle PQR reflected across the y-axis.
Arionna’s Work:
Blue right-arrow red. P (3,7) right arrow P prime (3, negative 7). Q (0, 4) right-arrow Q prime (0, 4). R (5, 8) right-arrow R prime (negative 5, 8).
Reflection across y axis
(x , y) becomes ( - x , y)
P ( 3 , 7) P ' ( 3 , -7) The correct solution should have been ( -3 , 7),
Q ( 0 , 4) Q' ( 0 , 4) This is correct,
R (5 , 8) R' (-5 , 8) This is correct,
Arionna was unable to determine P's proper point. Not the y-value, but the x-value should have been negated instead.
The graph of Arionna
The points of a red triangle on a coordinate plane are (-7, 3), (-5, 8), and (0, 4).
When graphing P"s coordinates (3, -7), Arionna reversed their order.
A blue triangle has points (0, 4), (3, 7), (5, 8).
Hence Arionna Graph is attested in image.
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write ⅔of 4 as a fraction
Answer:
2/3 of 4=8/3or 2 2/3 is your answer
Answer:
I have 2.66667 As a fraction it is 4/1
Step-by-step explanation:
I'm not completely sure I'm new to this :|
Find the volume of this right rectangular prism. [Type your answer as a number.]
1
Answer:
200 cm3
Step-by-step explanation:
Multiply 10x4x5=200
last week Kellie ran 28 miles. this week she ran 32. what was the percent change in number of miles she ran
Multiply (X - 4) squared
Answer:
it's the fourth answer
Step-by-step explanation:
(X-4) (X-4)
[tex]x^{2}[/tex]-4x-4x+16
[tex]x^{2}[/tex]-8x+16
The expression is x² + 8x + 16. The correct answer is a) x² + 8x + 16.
To multiply (x - 4)², we can use the concept of expanding a binomial squared. The formula for expanding a binomial squared is:
(a - b)² = a² - 2ab + b²
In this case, a = x and b = 4. Substituting these values into the formula, we have:
(x - 4)² = x² - 2(x)(4) + 4²
= x² - 8x + 16
Therefore, the correct option is a) x² + 8x + 16.
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Solve the equation 15=7+b
Answer:
[tex]b=8[/tex]
Can i have brain plzmadison paid $53.58 in sales tax on her books. the sales tax was 8.6% of the cost of the books. how much did madison's books cost before tax?
Answer:
$48.98
Step-by-step explanation:
first move the decimal of your percent 2 places
8.6% = .086
then multiply by 53.58
.086 × 53 58= 4.60
subtract 4.60 from 53.58
53.58 - 4.60= 48.98