Answer:
x = 2
Step-by-step explanation:
Vertical angles are equal to each other. It means that,
∠A = ∠B
So,
20x+10 = 30x−10
Taking like terms together, we get :
20x-30x=-10-10
-10x=-20
x=2
So, the value of x is 2.
The radius of a circles is 5.24 ft. Determine the circumference of the circle.
Answer:
32,82 ft
Step-by-step explanation:
The formula for the circumference of a circle of radius r is C = 2πr.
In this case the circumference is C = 2π(5.24 ft), or approximately
32,82 ft
Please help thank you!
Answer:
Elimination
Step-by-step explanation:
You can just multiply the bottom equation by 2 and it would cancelled out the ys.
Answer:
Elimination
Step-by-step explanation:
It is elimination because when you eliminate you are adding or subtracting to get one variable. For example, you would do 10y-5y= 5y and 14 + 4 = 18
Did this help!?
x^2-12x-6=-65 solve for x
Answer:
x
Step-by-step explanation:
x
Answer:
x = 6 + 4.796i and x = 6 - 4.796i
Step-by-step explanation:
For this problem, we will simply apply the quadratic formula to find the values of x. The quadratic formula is as follows:
x = [-b +/- sqrt(b^2 - 4ac)] / 2a
Using the formula let's find the values of x.
x^2 - 12x - 6 = -65
x^2 - 12x - 6 + 65 = -65 + 65
x^2 - 12x + 59 = 0
The coefficient of x^2 is a, the coefficient of x is b, and the constant 59 is c.
Hence, for our formula we have the following values:
a = 1
b = -12
c = 59
x = [-b +/- sqrt(b^2 - 4ac)] / 2a
x = [-(-12) +/- sqrt( (-12)^2 - 4(1)(59) ) ] / 2(1)
x = [ 12 +/- sqrt ( 144 - 236 ) ] / 2
x = [ 12 +/- sqrt ( -92 ) ] / 2
x = [ 12 +/- sqrt ( -4 * 23 ) ] / 2
x = [ 12 +/- 2i sqrt(23) ] / 2
x = 6 +/- i sqrt(23)
Hence from the formula, we have two possible values for x, both complex solutions. Note, i is an imaginary number.
x = 6 + i sqrt(23) and x = 6 - i sqrt(23)
x = 6 + 4.796i and x = 6 - 4.796i
Cheers.
Five people bought tickets for the school play for a total of $65.75. If each ticket was the same price, how much was the cost of each ticket?
Answer:
13.15 is ur answer hope this helped!
each ticket costs $13.15
One pound of candies costs $3.50.
a) How much will we have to pay for 3 lb?
b)How much will we have to pay for 4.5 lb?
c)How many pound of candies can be bought for $7?
d)How many pound of candies can be bought for $10.50?
Answer:
a). $10.50
b). $15.75
c). 2 POUNDS
d). 3 POUNDS
Step-by-step explanation:
Answer of option (a)=$10.50 , (b)=$15.75 , (c)=2 pound , (d)=3 pound.
What is cost?Cost is an amount to be spent to buy something or obtain something.
Given that,
The cost for one pound of candies is $3.50,
(a) The coast For 3 pounds of candies = 3.50×3=10.50
(b) The coast For 4.5 pounds of candies = 3.50×4.50=15.75
(c) For $3.50 ,1 pound candies can be bought, so for $7 , 2 pound candies can be bought (Since 3.50×2=7)
(d) For 3.50 , 1 pound candies can be bought, so for $10.50 , 3 pound candies can be bought (Since 3.50×2=7)
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A cylinder has a radius of 1 inch and height of 1 inch.
What is the approximate volume of the cylinder? Round to the nearest hundredth. Use 3.14 for π.
1.05 cubic inches
1.57 cubic inches
3.14 cubic inches
6.28 cubic inches
Answer:
3.14, confirmed on Edge
Step-by-step explanation:
Since this cylinder has a radius of 1 inch, its volume is equal to 3.14 cubic inches.
Given the following data:
Radius of cylinder = 1 inch.
Height of can = 1 inch.
[tex]\pi =3.14[/tex]How to calculate the volume.Mathematically, the volume of a cylinder is given by this formula:
[tex]V = \pi r^2h[/tex]
Where:
h is the height.r is the radius.Substituting the given parameters into the formula, we have;
[tex]V = 3.14 \times 1^2 \times 1\\\\V=3.14 \times 1[/tex]
V = 3.14 cubic inches.
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Find the perimeter of the following polygon. Be sure to include the correct unit in your answer.
15 m
1
mm
15 m
17 m
km
9 m
12 m
Answer:
489 km is the perimeter
Step-by-step explanation:
mark me BRAINLIEST
80 points! Answer quick and ill give brainleist!
Answer:
im in 8th grade and can't do that math
Step-by-step explanation:
i dont understannnddd
b & d maybeeeeeee .
hope this helps
A sporting goods store sells footballs, basketballs, and volleyballs. A football costs $3, a baskeball costs $1, and a volleyball costs $21. On a given day, 2 times the number of footballs sold was the same as the number of volleyballs sold. They brought in a total of $3750 that day, and the money made from basketballs alone was $66 more than the money made from volleyballs alone. Let x, y, z be the number of footballs, basketballs, and volleyballs sold respectively. Create the matrix A that solves
Answer:
Step-by-step explanation:
from the given set of numbers which is an odd one out, 2,6,28,23,7,64
Olivia buys 4 masks that each cost the same amount
and a scarecrow, all for $176.75. If the scarecrow
costs $56.75, find out the cost of each mask cost.
the cost of an afternoon movie ticket last year was $5.00. this year an afternoon movie ticket costs $6.00. what is the percent increase of the ticket from last year to this year ?
a. 10%
b. 20%
c. 25%
d. 40%
Which relation is a function?
{(1, 2); (2, 3); (3, 4); (1, 5)}
{(1, 2); (1, 3); (3, 2); (4, 2)}
{(1, 2); (2, 5); (3, 2); (4, 5)}
{(1, 2); (2, 3); (3, 4); (2, 5)}
Answer:
the third relation: {(1, 2); (2, 5); (3, 2); (4, 5)}
Step-by-step explanation:
relations can only be a function if the input/x don't repeat at all.
its ok if the output/y repeat though!
{(1, 2); (2, 5); (3, 2); (4, 5)}, best represents the functions. Option C is correct.
Given that,
To determine which relation is a function.
Functions is the relationship between sets of values. e g y=f(x), for every value of x there is its exists in set of y. x is the independent variable while Y is the dependent variable.
Here,
For a relation to be a function, for two variables only one of the variables can have a repeated value i.e. dependent variable with respect to the others if the value of both variables is repeating then the relation is not a function. So,
{(1, 2); (2, 3); (3, 4); (1, 5)}
X repeated twice its not the function.
Similarly,
{(1, 2); (2, 3); (3, 4); (2, 5)} and {(1, 2); (1, 3); (3, 2); (4, 2)} are not the function.
But,
{(1, 2); (2, 5); (3, 2); (4, 5)} is function because the value of independent variable is not repeating.
Thus, {(1, 2); (2, 5); (3, 2); (4, 5)}, best represents the functions. Option C is correct.
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which statement is true about the transformation
Answer:
Where are the statements
Answer:
The answer is A
Step-by-step explanation:
Got this from edge
Which equation represents a line that passes through -2,4 and has a slope of 2/5 need help Now
Answer:
y = 2/5x + 24/5
Step-by-step explanation:
y - 4 = 2/5(x - (-2))
y - 4 = 2/5(x +2)
y - 4 = 2/5x + 4/5
y = 2/5x + 4/5 + 4
y = 2/5x + 24/5
I'm confused
What is the answer
The lines below are parallel. If the green line has a slope of 3, what is the
slope of the red line?
Enter your answer as an integer or a fraction in lowest terms.
Answer:
3
Step-by-step explanation:
Parallel lines have the same slope.
Belvedere wants to buy a video game that is 40% off. The original
price is $188.09.
What is amount of discount (nearest hundredth)?
Answer:
$100 if you are trying to find the nearest hundreth.
Step-by-step explanation:
A 10-foot ladder is placed 4 feet from the edge of a building. How far up the building does the ladder reach. Round your answer to the nearest tenth of a foot.
HELP ME, ILL GIVE YOU ALOT OF POINTS!! AND BRAINY AWARD!!
Answer:
a = 9.2
Step-by-step explanation:
a^2+4^2= 10^2
a^2 + 16 = 100
a^2 = 84
a = 9.2
Diana baked 39 cookies with 3 scoops of flour. How many scoops of flour does Diana need in
order to bake 169 cookies? Solve using unit rates.
Answer:
Diana needs 13 scoops of flour to bake 169 cookies.
Step-by-step explanation:
well, first you need to find the unit rate.
if 3 scoops of flour makes 39 cookies,
then 1 scoop of flour makes 13 cookies. (39/3)
next, since the unit rate is 13 cookies per flour-scoop, divide 169 by 13 to get your answer.
169/13 = 13
Find the area of the parallelogram 8cm 14cm 9cm
3. A local fast food restaurant takes in $9000 in a 4 hour period. Write a direct variation equation
for the relationship between income and number of hours. Estimate how many hours it would
take the restaurant to earn $20,250.
Which of the following exponential equations shows a reflection over the y-axis, a vertical
stretch by a factor of 2, and horizontal shift right 1.
a. y = -2(4)* – 1
b. y = -2(4):-1
c. y = 2(4)-x-1
d. y = 4(2)-x-1
Answer:
we are given
parent function as
(1)
vertical stretch of factor 2
so, we can multiply y-value by 2
then a shift right of 3 units
so, we can replace x as x-3
(2)
a shift left by 2 units
we can replace x as x+2
then a horizontal shrink factor of 1/2
so, we can multiply by 2 to x-value
then a shift down of 5 units
we can subtract y-value by 5
so, we get
(3)
a shift to the right 1 unit
we can replace x as x-1
stretched vertically by a factor of 1/2
we can multiply y-value by 1/2
then is shifted down 4 units
we can subtract y-value by 4
(4)
reflected across the x-axis
we can multiply y-value by -1
tretched vertically by a factor of 3
multiply y-value by 3
shifted left 7 units
we can replace x as x+7
Step-by-step explanation:
A line passes to the points(
(8,-1) and (-4,2)
What is the y-intercept of this line?
-4
-1
1
4
1 inch = 2.54 centimeters. How many centimeters long is an 18-inch ruler?
Answer:
45.72 cm
2.54 x 18
Answer:
45.72 centimeters
Step-by-step explanation:
If an inch is 2.54cm, an 18in ruler would be 18 times as many centimeters...
2.54x18=45.72
Hope this helps C:
Assume that an investment of $9000 earns an APR of 6% compounded monthly for 18 months. How much money is in your account after 18 months?
Damarius is making some big life decisions! He decides it's time to start saving for his future and deposits $300 each month at 4.1% annual interest, compounded monthly, for 30 years. At the end of 30 years, he has an account balance of $211,966.64. How much of this did Damarius contribute and how much of this is interest?
Answer:
$108,000
$103,966.64
Step-by-step explanation:
Damarius contributes $300 each month, for 30 years. Therefore, to find the amount he contributed, we multiply those pieces together (12 months in each year).
300⋅12⋅30=$108,000
Therefore, over the 30 years, Damarius contributed $108,000.
If there was $211,966.64 in his account, and he contributed $108,000, then the rest is interest.
$211,966.64−$108,000=$103,966.64
There was $103,966.64 in interest earned on Damarius' account.
help please this is timed
Answer:
i think (-3,3)
Step-by-step explanation:
plz make brainliest answer and follow and like
A hotel chain is ordering new furnishings what is the total cost of 1,000 sheet sets 1,000 pillows,and 100 desk chairs
What is the value of the expression below when z = 10 and w = 7
10z + 9w
Answer:
163
Step-by-step explanation:
10(10)+9(7)=
100+63=163
Answer:
163
Step-by-step explanation:
If z=10 and w=7.
10z+9w [writing the equation again for reference purposes]
10(10) + 9(7) [we substitute each variable with its defined value]
100 + 9(7) [we multiply 10 and 10, aka 10 and z]
100 + 63 [we multiple 9 and 7, aka 9 and w]
163 [we add 100 and 63 to get our final answer]
