Mathematics High School

I don’t know which one is correct.
A) a=80
b=100

B) a=60
b=120

C) a=70
b=110

D) a=72
b= 108
Please help thank you

Answers

Answer 1

Answer:

Your right the answer is B a=60 , b=120

A ratio of 1:2 just means one value is twice that of the other.

Answer 2

Answer:

B (a=60, b=120)

Step-by-step explanation:

1. m∠AOB = 180°

2. Since the ratio of a to b is 1:2, set the measure of a as x, and the measure of b as 2x.

3. a+b = 180, so x+2x = 180, 3x = 180, x = 60

4. x = a, so if x=60, then a = 60

5. if b=2x, then b = 2a, which is 2*60 = 120

Hope this helps

Related Questions

omg please help me I don't understand

Answers

Answer:

508sq. cm

Step-by-step explanation:

surface area of a prism = 2(lw + wh + lh)

For the larger prism

Surface area = 2(2*10 + 2 * 12 * 10*12)

Surface area = 2(20+24+120)

Surface area = 2(164)

Surface area = 328sq.cm

For the smaller prism

Surface area = 2(3*6 + 3 * 8 * 6*8)

Surface area = 2(18+24+48)

Surface area = 2(90)

Surface area = 180 sq.cm

Surface area of the figure = 328 + 180

Surface area of the figure = 508sq. cm

I need some help with the his please help out

Answers

Answer:

Sylvia is the tallest.

Step-by-step explanation:

Answer:

Maria

Step-by-step explanation:

Sylvia = 4*12 + 3 = 48 + 3 = 51 inches

Maria = 59 inches

59 > 51 inches

Will get brainlyest!!!!!!! answer has to be in radical form if irrational

Answers

x = -1.9/2.1

x = -0.9047619048

As the number or the magnitude of x is a terminating decimal number so it is not irrational number its a rational number

Hope it helps

A line segment 20cm long is divided into two parts so that one part is four times as long as the other parts. How long is each part

Answers

Part 1 is 16cm and Part 2 is 4cm

4 x 4 = 16 this makes part 2 four times as long as part 1
16 + 4 = 20 this makes the whole line segment

mean, median, mode, and range
23, 24, 24, 25, 26, 27, 28, 29, 30

Answers

Mean- 26.222222222222

Median- 26

Mode- 24

Range- 7

Hope this helped :D

correct answer marked brainliest

Answers

Answer:

a. 120

b. 336

Step-by-step explanation:

hope this helps:)

Which statements are true? Select the two correct answers.
The square root of a positive number greater than 1 is less than the number.
The square root of a positive number is always less than half of the number itself.
The square root of a positive number less than 1 is less than the number.
The square root of a perfect square is not a whole number.
The square root of a positive number less than 1 is between 0 and 1.

Answers

Answer:

5.the square root is positive number lessthan 1 is beteween 0 and 1

1.the square root of a positive number greater than 1 is less thsn number

Problem Set
1. A 5-liter cleaning solution contains 30% bleach. A 3-liter cleaning solution contains 50%
bleach. What percent of bleach is obtained by putting the two mixtures together?

Answers

5 liters (L) of 30% bleach solution contains 0.3×(5 L) = 1.5 L of bleach.

3 L of 50% bleach contains 0.5×(3 L) = 1.5 L of bleach, too.

Combined, you would have 8 L of solution containing 1.5 L + 1.5 L = 3 L of bleach, so the concentration of bleach is

(3 L) / (8 L) = 0.375 = 37.5%

The area of a rectangular classroom is 572 square feet.
If the width of the classroom is 22 feet, what is the
length?

Answers

Answer: 26 Feet

Hope this helps!

On a very cold morning, it was -8°F. As the day went on, the temperature rose 2 degrees each hour. Which equation shows the temperature over time?

Answers

Answer:

Step-by-step explanation:

t = 2h-8

since you didn't put in the equations, just put in what ever variable is where t is at and any variable other than t for the h :)

Answer:

Please put equations, so I can able to give you ans

Sasha has a rectangular garden 8 m by 10 m. The garden has a path surrounding it which is 2 m wide. What is the total area of the garden and pathway? A. 168 m^2 B. 120 m^2 C. 116 m^2 D. 96 m^2 E. 84 m^2

Answers

Answer:

Step-by-step explanation:

Area of a rectangle = length x width

length = 8 + 2 = 10

width = 10 + 2 = 12

10 x 12 = 120

Help i need to find this,

Answers

Answer:

Adjacent

Step-by-step explanation:

They are next to each other ^^

Please help I’ll give brainlist

What are Three examples for linear equations? Show work

Answers

Answer:

2x – 3 = 0

2y = 8.

m + 1 = 0

x + y = 2

3x – y + z = 3.

Step-by-step explanation:

these are 5 examples

find the surface area of the figure. no links please.

Answers

Answer:

190

Step-by-step explanation:

10x5x2=100

5x3x2=30

3x10x2=60

100+30+60=190

Four-fifths of a math class is made up of female students. What is the
ratio of male students to female students?

Answers

I am answering this so the other answer can get brainliest since they were the ones who gave you the answer :)

Of the pizzas recently sold at Pizza Pies, 10 had pepperoni and 2 did not. Considering this data, how many of the next 6 pizzas sold would you expect to have pepperoni?

Answers

Answer:

1 pizza

Step-by-step explanation:

Of the pizzas recently sold at Pizza Pies, 10 had pepperoni and 2 did not.

This means, the total number of pizzas sold is

10 pepperoni + 2 pizzas without pepperoni = 12 pizzas

Hence, the number of 6 pizzas that would be sold without pepperoni is calculated as:

From the above question,

12 pizzas = 2 pizza without pepperoni

6 pizzas = x

Cross Multiply

12 pizzas × x = 6 Pizzas × 2 pizza without pepperoni

x = 6 Pizzas × 2 pizza without pepperoni/12 pizzas

x = 1 pizza without pepperoni

Therefore, 1 pizza would not have pepperoni out of 6 pizzas sold

Answer:

Step-by-step explanation:

Somebody please help it would be much appreciated.

Answers

Answer:

Step-by-step explanation:

as you can see test a is further away from the ruler you have to put it at 0 so that you can get your answer I am not sure if it's correct or not

Answer:

Step-by-step explanation:

What is the slope of the line y = 6x + 3?
3
-6
6
-3

Answers

Answer:

the answer is 6

Step-by-step explanation:

slope = m

y = mx + c

m = 6

Need to know asap!!
Expand and simplify:
6(3j – 2) - 4(2j + 4)

Answers

18j - 12 - 8j - 16
10j - 28

If a vertical line intersect the graph at more than one point , the graph is a ?

Answers

Answer:

criminal. Because it doesnt follow the vertical line test, where every x values has one y value.

Step-by-step explanation:

HELP ASAP!! HELP FAST!!

Answers

The perfect square is answer A

Can someone please help? The question is in the picture.

Answers

Answer: Choice B. 10+4*sqrt(14)

===========================================================

Explanation:

The diagram shows that PT = 4 and QR = 5. Since QR is a radius of the circle, this means that the other radii segments TR and RS are also 5 units long.

Note how PR = PT+TR = 4+5 = 9, and how this segment is the hypotenuse for the right triangles PQR and PRS.

Picking either triangle, we have one known leg of 5 units (the radius mentioned earlier) and the other is unknown. The unknown leg is tangent to the circle, and recall that a tangent segment is always perpendicular to the radius at the point of tangency. So that's why we have right triangles.

Apply the pythagorean theorem to find the length of PQ and PS (both are the same length)

a^2 + b^2 = c^2

a^2 + 5^2 = 9^2

a^2 + 25 = 81

a^2 = 81 - 25

a^2 = 56

a = sqrt(56)

a = sqrt(4*14)

a = sqrt(4)*sqrt(14)

a = 2*sqrt(14)

The exact length of PQ and PS is 2*sqrt(14) units.

---------

We have enough to find the perimeter of quadrilateral PQRS. We add up the exterior sides. That means we ignore the interior segment PR.

perimeter = PQ+QR+RS+SP

perimeter = 2*sqrt(14)+5+5+2*sqrt(14)

perimeter = 10+4*sqrt(14)

Answer is choice B

Side note: The expression above approximates to roughly 24.966629

You rent an apartment that costs \$1000$1000 per month during the first year, but the rent is set to go up \$160$160 per year. What would be the monthly rent during the 10th year of living in the apartment?

Answers

Answer:$2440

Step-by-step explanation:

a10 = a1 + (n-1)d <--- arithmetic sequence formula

a10 = 1000 + 9(160)

a10 = 2440

the answer would be $193,960

solve it please, (√81 + √9) ASAP

Answers

Step-by-step explanation:

hope it is helpful to you

Answer:

2√21

Step-by-step explanation:

I basically simplify the radical by breaking the radical up into products of the know factors, assuming the real numbers.

PLZ HELP ME
What is the quadratic regression equation for the data set?

yˆ=−0.175x2−3.786x+121.119

yˆ=−0.175x2+3.786x−121.119

yˆ=−0.175x2+3.786x+121.119

yˆ=−0.175x2−3.786x−121.119
x y
6 100
3 110
10 50
3 90
5 120
15 30
9 70

Answers

Answer:yˆ=−0.175x2−3.786x+121.119

look at picture

Step-by-step explanation:

The quadratic regression equation for the data set is:

y^ = -0.175x²-3.786x+121.119

What is Quadratic Regression Equation?

Quadratic regression is the process of determining the equation of a parabola that best fits a set of data. This set of data is a given set of graph points that make up the shape of a parabola. The equation of the parabola is y = ax² + bx + c, where a can never equal zero.

According to the given problem,

Let us choose any value of x,

x = 10

For this value of x we can see that the respective value of y= 50

Substituting the value of x in the equations to see which equation satisfies the value of y as 50.

Substituting the value of x in the equation:

y^ = -0.175x²-3.786x+121.119

y^ = 50

Hence, we can conclude that y^ = 0.175x² - 3.786 + 121.119 is the quadratic regression equation for the given data set.

Learn more about Quadratic Linear Equations here:

https://brainly.com/question/24639881

#SPJ2

121057003
Sphere
Find the area of
radius tem
Area - 300cm-
30cm ainda

Answers

Answer:

Step-by-step explanation:

Circumference (Perimeter) of Circle Formula: The circumference of a circle is determined by the following formula

where

is the length of the diameter of the circle and

≈

3.14

Circumference (Perimeter) of Circle Formula: The circumference of a circle is determined by the following formula

where

is the length of the radius of the circle and

≈

3.14

Area of Circle Formula: The area of a circle is determined by the following formula

Condense (cos92°)(cos133°)-(sin92°)(sin133°) into a singular trigonometric function expression, then find the exact value.

Answers

Answer:

-1/√2

Step-by-step explanation:

According to trigonometry identity

cos(A+B) = cosAcosB - sinA sinB

Given the expression

(cos92°)(cos133°)-(sin92°)(sin133°)

This can be expressed as cos(92+133) where A = 92, B = 133

(cos92°)(cos133°)-(sin92°)(sin133°)

= cos(92+133)

= cos225

= -0.7071

= -1/√2

Hence the exact value is -1/√2

There are 520 employess at greenville publishing. Jasmine surveys a representative sample of employees on their transportation costs each month. The reults are shown in the box plot.

Answers

Answer:

130 ; 50% ; 25%

Step-by-step explanation:

Using te boxplot to answer the underlying questions :

Number of employees who spend $10 or less corresponds to the lower quartile, which is up to 25% of the distribution :

Total number of employees = 520

Number of employees who spend $10 or less = 25% of 520 = 0.25 * 520 = 130 employees.

Percentage of employees who spend from $10 to $45 = Interquartile range

$10 corresponds to lower quartile = 25%

$45 corresponds to upper quartile = 75%

IQR = 75% - 25% = 50%

Percentage who spend $45 or more

$45 corresponds to the upper QUARTILE (Q3) :

45 or more = 100% - Q3 = 100% - 75% = 25%

Find the missing side. Round to the nearest tenth.

Answers

Step-by-step explanation:

sin x = 12/16 = 0.75

x = arc sin 0.75 = 48.6°

cos x = 36/40 = 0.90

x= arc cos 0.90 = 25.8°

cos x = 10/15 = 0.6667

x= arc cos 0.6667 = 48.2°

tan x = 30/18 = 1.6667

x = arc tan 1.6667 = 59.0°

What is the measure of b ????

Answers

Answer:

B=50

Step-by-step explanation:

THE TRINGLE IS 180 DEGREE (RULE)

(X+38)+(3X-12)+(2X-2)=180

6X=180-(38-12-2)

6X=156

X=26

B=2X-2

B=2(26)-2=52-2=50

Answer:

B=50

Step-by-step explanation:

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I don’t know which one is correct. A) a=80 b=100 B) a=60 b=120 C) a=70 b=110 D) a=72 b= 108 Please help thank you

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I don’t know which one is correct.
A) a=80
b=100

B) a=60
b=120

C) a=70
b=110

D) a=72
b= 108
Please help thank you