Answer:
[tex]( - \frac{1}{4} ) \times ( - \frac{3}{7} ) \\ = \frac{3}{4 \times 7} \\ = \frac{3}{28} [/tex]
please answeer this
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Answer:
58 degrees
Step-by-step explanation:
The middle line in the box is the meadian so it points to 58 so yeah! Hope this helps! Good Luck!
Answer:
64
Step-by-step explanation:
Santos is a lifeguard and spots a drowning child 50 meters along the shore and 60 meters from the shore to the child. Santos runs along the shore for a while and then jumps into the water and swims from there directly to the child. Santos can run at a rate of 4 meters per second and swim at a rate of 0.9 meters per second. How far along the shore should Santos run before jumping into the water in order to save the child
Answer:
Santos should run approximately 36.145 meters along the shore
Step-by-step explanation:
The given parameters are;
The distance along the shore of the child = 50 meters
The distance from the shore of the child = 60 meters
The rate at which Santos can run = 4 m/s
The rate he can swim = 0.9 m/s
Let 'x' represent the distance he runs along the shore
We have;
The time he spends running on the shore, t₁ = x/4
The time he spends swimming, t₂ = (√(60² + (50 - x)²)/0.9
The total time, T = t₁ + t₂ = x/4 + (√(60² + (50 - x)²)/0.9
To find the maximum, we have;
dT/dx = 0 = d(x/4 + (√(60² + (50 - x)²)/0.9)/dx = 1/4 - (50 - x)/(0.9·(√(60² + (50 - x)²) = 0
1/4 - (50 - x)/(0.9·(√(60² + (50 - x)²) = 0
Simplifying using a graphing calculator gives;
[tex]\dfrac{x - 2000}{9} = \sqrt{x^2-100\cdot x+6,100}[/tex]
1519·x² - 151900·x + 3505900 = 0
x = (151900 ± √((-151900)² - 4×1519×3505900))/(2 × 1519)
x ≈ 63.86 m or x ≈ 36.145 m
We note that the distance from a point x = 63.83 meters and 36.145 meters from where Santos spots the girl to the location of the girl are the same
Therefore, Santos should run approximately 36.145 meters along the shore before jumping into to the water in order to save the child
Help me besties
Find the measure of each angle in a regular 55 sided polygon.
[tex]a =\dfrac{180\cdot(n-2)}{n}\\~\\a = \dfrac{180\cdot(55-2)}{55}\\~\\a = 173^{\circ} \text{ }27'\text{ }16''[/tex]
What would I say pls help me
Answer:
Hi, today we learned about (the lesson you choose) and the teacher told me to tell you what to do so you need to do your work or you will get in trouble
Step-by-step explanation:
Find a point-slope form for the line with slope 1/5 and passing through the point (-6,-4)
Answer:
(y +4) = 1/5( x +6)
Step-by-step explanation:
Point slope form is
(y-y1) = m(x-x1) where m is the slope and (x1,y1) is a point on the line
(y - -4) = 1/5( x - -6)
(y +4) = 1/5( x +6)
During a fundraiser, students in Math Club make a $0,50 profit for every candy bar
they sell
Let n represent the number of candy bars the club sells.
Lett represent the total profit earned, in dollars.
What is the total profit earned for selling 10 candy bars?
I got two answer when I solved it but I’m not sure which one is correct
Here what I got
For the first time I tried it
0.50x10=5
Or
0.50+0.50 +0.50 +0.50 0.50 +0.50+0.50+0.50+0.50= 4.5
I’m not sure if I’m correct or which is the right answer can someone expían ?
Answer:
profit(n) = n * .50
Profit(10) = 5.00
Step-by-step explanation:
Profit = amount of candy bars sold * profit per candy bar
profit(n) = n * .50
Let the number of candy bars sold be 10 ( n=10)
Profit(10) = 10 * .50
= 5.00
When you added you only added 9 .50 terms which is why you only got 4.50 for your answer.
(x^2)^3÷x^6 HELLLLP
Answer:
x
Step-by-step explanation:
(x²)³ ÷ x⁶
x⁶ ÷ x⁶
x
URGENT PLS HELP ASAP ANSWER EACH EMPTY BOX AND I WILL GIVE BRAINLIEST !!!!!
Answer:
y-1 = 2(x+2)
Step-by-step explanation:
Point slope form of a line is
y-y1 = m(x-x1) where m is the slope and (x1,y1) is a point on the line
y -1 = 2(x - -2)
y-1 = 2(x+2)
Please do this question for me, I don’t get it, all it wants you to do is convert.
9514 1404 393
Answer:
$6.80/fortnight
Step-by-step explanation:
You need to know there are 13 weeks in a quarter, and 2 weeks in a fortnight. The conversion is straightforward.
[tex]\dfrac{\$44.20}{\text{quarter}}\times\dfrac{1\text{ quarter}}{13\text{ weeks}}\times\dfrac{2\text{ weeks}}{1\text{ fortnight}}=\dfrac{\$44.20\times2}{13\text{ fortnight}}\\\\=\boxed{\$6.80\text{/fortnight}}[/tex]
Hello again, do you mind helping me? Thank you
Answer:
P = 20 and A = 24
Step-by-step explanation:
6+6+4+4 = 20
6*4 = 24
Hope this helps
Ayuda plissss es para hoy
Answer and Step-by-step explanation:
1.
First, combine everything in the first parenthesis, then multiply by the number on the outside.
Primero, combine todo en el primer paréntesis, luego multiplique por el número en el exterior.
[tex]\frac{8}{5} +\frac{6}{5} -\frac{4}{5} =\\\\\frac{14}{5} -\frac{4}{5} = \frac{10}{5} = 2\\\\\\[/tex]
2 × [tex]\frac{5}{6}[/tex] = [tex]\frac{10}{6} = A) \frac{5}{3}[/tex] <- This is the answer. Esta es la respuesta.
2. First, combine everything in the first parenthesis, then multiply by the number on the outside.
Primero, combine todo en el primer paréntesis, luego multiplique por el número en el exterior.
[tex]\frac{20}{11} + \frac{12}{11}- \frac{19}{11} =\\\\\frac{32}{11} -\frac{19}{11} = \frac{13}{11} \\\\\\[/tex]
[tex]\frac{13}{11}[/tex] × [tex]\frac{11}{13}[/tex] = B) 1 <- This is the answer. Esta es la respuesta.
3. Make the fractions have the same denominator, then add, then multiply by 40.
Haz que las fracciones tengan el mismo denominador, luego suma y luego multiplica por 40.
[tex]\frac{3}{8} ->\frac{15}{40} \\\\\frac{4}{5} ->\frac{32}{40} \\\\\frac{15}{40}+ \frac{32}{40} = \frac{47}{40} \\\\\\[/tex]
[tex]\frac{47}{40}[/tex] × 40 = E) 47 <- This is the answer. Esta es la respuesta.
I hope this helps! #TeamTrees #PAW (Plant And Water)
¡Espero que esto ayude! #TeamTrees #PAW (Planta y agua)
Another thrifty student has saved up $1400 working at City Beach. This person put the money into an account for
1 year, which generated $70 interest. What was the interest rate?
how do i work out the interest rate?
Answer 20%
Step-by-step explanation:
Complete the statement
Answer:
<RQS = <RSQ
Step-by-step explanation:
IRQ = RS, then QRS is an isosceles triangle and the base angles are equal
<RQS = <RSQ
Aline has a slope of -3 and a y-intercept of 3
what is the x-intercept of the line?
Answer:
(1,0)
Step-by-step explanation:
y = -3x+3
simple, to find the x-intercept, what does x equal for y to be 0?
when x is 1, y equals 0, so the x-intercept would be at (1,0)
6
b
160°
45°
Find a, b, and c.
A. a = 12,6 = 673,c=316
B. a = 12,6 = 1213,c=31/6
C. a = 6/3,6 = 12,C= 612
D. a=6x3,6 = 12-/3,c=ba/2
Answer:
C. a = 6√3, b = 12, c = 6√2
Step-by-step explanation:
First let's find b using the cos. The cos is the adjacent side if the angle divided by the hypotenuse. We know the value of the adjacent side and we know that cos(60°) = 1/2 = 0.5:
cos(60°) = 6/b
0.5 = 6/b
b = 6/0.5
b = 12
Now we can find a using the Pythagorean theorem:
b² = 6² + a²
12² = 6² + a²
144 = 36 + a²
a² = 144 - 36
a² = 108
a = √108
a = 6√3
And now we can find c using cos again:
cos(45°) = c/b
√2/2 = c/12
c = 12•√2/2
c = 6√2
point a is on line segment RT. Given ST = 2x, RT = 4x, and RS = 4x -4 determine the numerical length of RS
A sample of a radioactive isotope had an initial mass of 120 mg in the year
2010 and decays exponentially over time. A measurement in the year 2015
found that the sample's mass had decayed to 50 mg, What would be the
expected mass of the sample in the year 2018, to the nearest whole number?
Answer:
2015-2010=5
50÷5=10
120-50=70
2017-2015=2
2*10=20
70-20=50mg
2018=50mg
The entries in the register of a bank account are shown in the table.
Account Register
Date
Withdrawal
Deposit
Balance
April 2
$1,976.20
April 3
$27.60
April 6
$192.70
April 8
$532.18
April 9
$35.90
?
What is the balance in this register after the withdrawal on April 9 ?
O A. $1,187.82
O B. $1,645.02
OC. $2,307.38
O D. $2,764.58
Translate the following phrase to a mathematical expression, and then evaluate the expression for n = 24.
the quotient of a number and four
O 4 n; 96
O n / 4; 6
O 4 / n; 7
O n / 4; 28
Answer:
B. n / 4; 6
Step-by-step explanation:
Let
n = the unknown number
the quotient of a number and four
= n/4
When n = 24
The expression becomes
= n/4
= 24/4
= 6
B. n / 4; 6
Answer:
I am a boy all bad girls co me.
roi-dfwr-bxc
someone please help please im begging someone help me ASAP!!! i’m struggling
Answer:
JK--- TU
KL--- UV
JL---TV
Answer:
JK- TU , KL-UV , JL-TV
Step-by-step explanation:
hope this helps
Find mZA and mZB.
Please help :)
Answer:
Angle A: 28 degrees
Angle B: 24 degrees
Step-by-step explanation:
Hi there!
The angle that measures 52 degrees (angle DCA) is one of the exterior angles of a triangle. An exterior angle of a triangle is equal to the sum of the opposite interior angles, which in this case would be angles A and B. Knowing this, we can set up the following equation:
[tex]4y-4+3y=52[/tex]
1) Solve for y
[tex]4y-4+3y=52[/tex]
Combine like terms
[tex]7y-4=52[/tex]
Add 4 to both sides to isolate 7y
[tex]7y-4+4=52+4\\7y=56[/tex]
Divide both sides by 7
[tex]\frac{7y}{7}=\frac{56}{7} \\y=8[/tex]
Therefore, y is equal to 8.
2) Solve for angles A and B
Angle A:
[tex]4y-4\\=4(8)-4\\=32-4\\=28[/tex]
Angle B:
[tex]3y\\=3(8)\\=24[/tex]
I hope this helps!
what is the estimate product of 345 and 34?
Answer:
7000
Step-by-step explanation:
the circle's area?
The diameter of a circle is 8 kilometers.
What is the circle's area?
( NOT 50.3 )
Step-by-step explanation:A≈50.27km²
d Diameter
8
km
d
r
r
r
d
d
C
A
Using the formulas
A=πr2
d=2r
Solving forA
A=1
4πd2=1
4·π·82≈50.26548km²
Questions and answers the answer is 50.27km
or
1. The starting point of a___ or____
is the endpoint.
Answer:
1. The starting point of a ray or line segment
is the endpoint.
Step-by-step explanation:
hope it may help you!
Answer:
The starting point of a ray or line segment is the endpoint.
Step-by-step explanation:
hope it may help you
the trapezium is drawn on a centimetre grid
Answer:
21 cm²
Step-by-step explanation:
Applying,
A = (a+b)h/2............. Equation 1
Where A = area of the trapezium, a = length of the first parallel side, b = length of the second parallel side, h = height.
From the diagram
Given: a = 5 cm (5 grids), b = 9 cm (9 grids), h = 3 cm (3 grids)
Substitute these values into equation 1
A = 3(5+9)/2
A = 3(14)/2
A = 3×7
A = 21 cm²
Points A, B, and C are midpoints of the sides of right triangle DEF. Triangle A B C is inside triangle D E F. Point A is the midpoint of side F D, point B is the midpoint of side D E, point C is the midpoint of side F E. Angles D F E and A B C are right angles. The length of D E is 10 centimeters, the length of F D is 6 centimeters, and the length of F E is 8 centimeters. Which statements are true? Select three options. (The formula for the area of a triangle is A = One-halfbh.)
Complete question:
Points A, B, and C are midpoints of the sides of right triangle DEF. Triangle A B C is inside triangle D E F. Point A is the midpoint of side F D, point B is the midpoint of side D E, point C is the midpoint of side F E. Angles D F E and A B C are right angles. The length of D E is 10 centimeters, the length of F D is 6 centimeters, and the length of F E is 8 centimeters. Which statements are true? Select three options. (The formula for the area of a triangle is A = One-halfbh.)
BC = 6 cm AC = 5 cm BA = 4 cm The perimeter of triangle ABC = 12 cm. The area of triangle ABC is One-third the area of triangle DEF.Answer:
2. A-C = 5 cm
3. B-A = 4 cm
4. The perimeter of triangle A-B-C = 12 cm.
Step-by-step explanation:
First, picture a triangle formed by points D-E-F.
Side F-D = 6 centimetersSide D-E = 10 centimetersSide F-E = 8 centimetersNow,
the midpoint of side F-D is A ⇒ 6/2 = 3cmthe midpoint of side D-E is B ⇒ 10/2 = 5cmthe midpoint of side F-E is C ⇒ 8/2 = 4cmThese values suggest that
Side F-A ⇒ 3 cm = Side B-C ⇒ 3cmSide E-B ⇒ 5 cm = Side A-C ⇒ 5cmSide F-C = E-C ⇒ 4cm = Side A-B ⇒ 4cmThe perimeter of the interior triangle ABC = 3cm + 5cm + 4cm = 12 cm
The total area of the interior triangle ABC is 1/4 the area of triangle DEF. You can see in the picture that there are four equal triangles inside DEF.
Answer:
B C and D
Step-by-step explanation:
right on edge
can someone help please!!
find the maximum value of function f(x) = -1.1x^2 - 3.6x + 1
Step-by-step explanation:
everything can be found in the picture
A woman went shopping and spent 2/7 of all the money she had. Then she lost 2/5 of what she had left after shopping. How much money did hse. have before she went shopping if she now has $15.00. BTW I need to know ASAP pls.
Answer:
$35
Step-by-step explanation:
1-2/7=5/7 (remaining money left after shopping)
2/5×5/7=2/7 (amount of money lost)
5/7-2/7=3/7 (amount of money she has now)
3/7=$15
1/7=$5
7/7=$35
Hence, total amount of money she has before she went shopping=$35
hope it helps:))))
Plzzzzz help ill make you brainliest
Jack's school is 6 km from his home. He goes to school by bus. One day on the way to school due to road construction the bus had to stop at a distance of 4,750 meters from his home. How far was the bus from school?
1 4,756 m
2 4,744 m
3 4,750 m
4 1,250 m
Answer:
4 1250 m
Step-by-step explanation:
Hope it helps you.
Find the value of x.
Answer:
17 degrees
Step-by-step explanation:
this is a 90 degree angle.
90 - 73 = 17