Mario answered 20 out of 25 questions correct on his test. What percentage did he get
correct?
A 20%
B. 50%
C. 60%
D.80%

Step-by-step explanation:

tan 60 = 21 ÷ y

1.73 = 21 ÷ y

y = 21 ÷ 1.73

y = 12.14

tan 30 = x÷ 12

0.6 x 12 = x

x = 7.2

Answer:

77/6

Step-by-step explanation:

area of triangle =1/2 base x height

=1/2 x8 1/6x 3 1/7

=1/2 x49/6x22/7

=77/6

Answer:

the time means how long it takes to get to that distance below it

Step-by-step explanation:

Answer: The radius would be twelve

Step-by-step explanation:

The radius of a sphere would be 12 cm. By putting the value of volume we can find the radius of the sphere. The radius of a sphere would be 12 cm.

Step-by-step explanation:

C.P=5×1=Rs.5

S.P.=4×1=Rs.4

Loss=C.P.=S.P.

=Rs.5-Rs.4

=Re.1

loss%=loss/C.P ×100

=1/5×100%

=20%

9514 1404 393

Answer:

  f(x) = (π-2)x^2/4

Step-by-step explanation:

The area of the triangle is ...

  A = 1/2(x)(x) = (1/2)x^2

The hypotenuse of the triangle is x√2, so the radius of the circle is x/√2. That means the area of the semicircle is ...

  A = 1/2πr^2 = (π/2)(x/√2)^2 = (π/4)x^2

The shaded area is the difference between the semicircle area and the triangle area.

  f(x) = (π/4)x^2 -(1/2)x^2

  f(x) = (π-2)x^2/4

Answer:

C, 85°

Step-by-step explanation:

180° = total angles for a triangle

First, add the known angles.

67 + 28 = 95

Then, subtract

180 - 95 = 85

To check your answer, add all the angles up to see if it equals 180°

67 + 28 + 85 = 180

Have a great day!

Answer:

huh? explain better

Step-by-step explanation:

Answer:

I agree with Noah's Method because following PEMDAS you have to do exponents first. 10^3 is 1000 and then you can add the 20. Jada's method is incorrect because you cannot add the two together.

Answer:

5.5

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

true

Step-by-step explanation:

plug them in

l2*-2l +1=3

and the same for the other one

Answer:

its square root 53 cuz it cant be simpler

The length of arc PR to the nearest hundredth is 7.15 units

The formula for calculating the length of an arc is expressed as:

L = r theta

Given the following parameters

r = PQ = 5 units

theta = <PQR = 82π/180 rad

Substitute to have:

L = 5 * 82π/180 rad

L = 7.15 units

Hence the length of arc PR to the nearest hundredth is 7.15 units

Learn more on length of an arc here; https://brainly.com/question/2005046

Answer: The answer is 7.16.

Answer:

100°

Step-by-step explanation:

is 25% of the circle

Answer:

BC = 100°

Step-by-step explanation:

The chord- chord angle BDC is half the sum of the arcs intercepted by the angle and its vertical angle, that is

[tex]\frac{1}{2}[/tex] ( BC + AE) = 85° ( multiply both sides by 2 to clear the fraction )

BC + AE = 170°

BC + 70° = 170° ( subtract 70° from both sides )

BC = 100°

Answer:

I'm sorry I don't know ‍♀️

Answer:

b

Step-by-step explanation:

Answer:

y=1/2x+3.5

Step-by-step explanation:

look at any part of your slope where it crosses through a point: now go up your slope until you find the next point that the slope intersects. from your first point A, go up, then over until you reach point B. you just found your fraction for m. congrats

Answer:

The last expression.

Step-by-step explanation:

The last expression is not a polynomial because x is in the denominator of the second term.

Answer:

[tex]4x^2+\frac{5}{x} -6[/tex]

Step-by-step explanation:

A rule for polynomials, is that if they have variables, the powers should be positive whole numbers. Basically, this means you cannot divide by a variable, but in option 4, second term, you are dividing 5 by x, which is the same as[tex]5*x^{-1}[/tex]. This means you are not raising the variable to a positive power, which means the whole 4th option is not a polynomial.

Answer:

[tex]yes (k) = \frac{1}{9}[/tex]

Answer: 25 kilometers for part A. 12 for part B.

Step-by-step explanation: Teacher told the answer.

Answer:

the answer is d

Step-by-step explanation:

brainliest pls

Answer:

It's B or D, but I think D.

Step-by-step explanation:

Answer:

1 : 15

2: 12

3: 52

4: 27.3

Step-by-step explanation:

For #1:

if line m and n are perpendicular then they will create right angles

Right angles have a measure of 90 degrees

That being said we can find the measure of the missing angle by subtracting the measure of the known angle (75) from 90

so k = 90 - 75

90 - 75 = 15

Hence k = 15.

For #3 ( very similar to #1, only difference is the values of the angles )

so R = 90 - 38

90 - 38 = 52

Hence, R = 52

For #2 and #4

Complementary angles have a sum of 90°

So like the previous questions we can find the measure of the missing angle by subtract the measure of the given angle from 90

∠V = 90 - 78

90 - 78 = 12

Hence ∠V = 12

∠Y = 90 - 62.7

90 - 62.7 = 27.3

Hence ∠Y = 27.3

Answer:D

hope this helps

Answer:

This ratio is not proportional. (๑・ω-)～♥”

Answer:

3/700

Step-by-step explanation:

Let

x = the quantity

3/7% of x

= 3/7 ÷ 100 * x

= 3/7 × 1/100 * x

= (3*1)/(7*100) * x

= 3/700 * x

= 3/700x

3/7​% of a quantity = 3/700 of the quantity