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3 years ago

, If x=y and y = 18, what is the value of 2x-3? 3 A) 21 B) 15 C) 12 D) 10

Mathematics

1 answer:

kicyunya [14]3 years ago

4 0

Answer:

33. 2x18-3. 36-3=33 the answer is 33

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Write a equivalent expression to 6(2x +5)

Nonamiya [84]

Answer:

12x+30

Step-by-step explanation:

6(2x+5)

=(6)(2x+5)

=(6)(2x)+(6)(5)

=12x+30

7 0

3 years ago

Read 2 more answers

Prove: If a chord of a circle makes an angle of 30° with a diameter, prove that the distance from the center to the chord is one

Svet_ta [14]

Answer:

See explanation.

Step-by-step explanation:

Let BC be the diameter of the circle with center at point O, AB be the chord and ∠ABC=30°. OD is the distance from the center to the chord.

Consider triangle BDO. This triangle is special 30°-60°-90° right triangle. The leg OD is opposite to the angle of 30° and is half of the hypotenuse. The hypotenuse of the triangle BDO is BO. BO is the radius of the circle and is equal to half of the diameter AB. Thus,

$OD=\dfrac{1}{2}BO=\dfrac{1}{2}\cdot \dfrac{1}{2}AB=\dfrac{1}{4}AB.$

5 0

3 years ago

What is the equation of the line that passes through (-1, 5) and (3, -7)?

enyata [817]

Answer:

$3x + y = 2$

Step-by-step explanation:

$y - y_1 = \dfrac{y_2 - y_1}{x_2 - x_1}(x - x_1)$

$y - 5 = \dfrac{-7 - 5}{3 - (-1)}(x - (-1))$

$y - 5 = \dfrac{-12}{4}(x + 1)$

$y - 5 = -3(x + 1)$

$y - 5 = -3x - 3$

$3x + y = 2$

3 0

3 years ago

Find the product of (3 x 109) and (2 x 109). Write the final answer in scientific notation.

chubhunter [2.5K]

The product of (3 x 109) and (2 x 109) in scientific notation is 6*10^9

<h3>What is scientific notation?</h3>

scientific notation can be described as the expression in the form a x 10^b where a is a number or decimal number a is greater than or equal to one.

(3 x 109) * (2 x 109) =6*10^9

Therefore, option D is correct.

Learn more about scientific notation at:

brainly.com/question/27862246

#SPJ1

5 0

2 years ago

nine more than twice a number is less than negative fifteen. solve the inequality for the unknown number.

pentagon [3]

Answer: x<-12

Step-by-step explanation:

let x= the number

2x+9<-15

2x<-24

x<-12

Hope this helps!! :)

You may ask any further questions

6 0

3 years ago