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Nat2105 [25]
3 years ago
15

Pls pls pls pls help, i will mark brainliest

Mathematics
1 answer:
kicyunya [14]3 years ago
6 0

Answer:

B)  81°

Step-by-step explanation:

∡1 ≅ ∡5 because they are corresponding angles

∡5 ≅ ∡7 because they are vertical angles

therefore, ∡1 ≅ ∡7

since the angles are equal we can create the following equation:

3x + 18 = 2x + 39

x + 18 = 39

x = 21

∡7 = 2(21) + 39

∡7 = 42 + 39

∡7 = 81

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A car traveled a distance of 180 miles in 4 hours. Traveling at the same speed, what distance would this car travel in 9 hours?
defon
405 miles is the answer.
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4 years ago
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Simplify the following leave the answer in radical notation:
Nataliya [291]

Answer:

1- 5xy³√5y

2- 2xy²∛3y²

Step-by-step explanation:

√125x²y^7=

√25*5x²y^6y

5xy³√5y

2) ∛24x³y^8=

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7 0
3 years ago
Factor the trinomial: 3x2 + 11x + 6
OleMash [197]
3x^2+11x+6

(3x^2+2x) + (9x+6)

Factor out x  from 

3x^2+2x  =  x(3x+2)

Factor out 3  from

9x+6 = 3(3x+2)

= x(3x+2)+3(3x+2)

Factor out common  term (3x+2) :

=(3x+2)(x+3)

hope this helps!

5 0
3 years ago
The standard form of the number 5, 976,000,000,000,000,000,000,000 is​
nirvana33 [79]

Answer:

5.976\times10^{24}

Step-by-step explanation:

<em>Standard form</em>, also called <em>scientific notation</em>, is a more compact way of writing very big or very small numbers. All numbers in scientific notation have the form

m\times10^b

where m is a number between 1 and 10, and b is an integer that represents how we've shifted the decimal point from the original number. For example, the number 23,000 in standard form would be written as 2.3 × 10⁴, since we have to shift the decimal point 4 places to the right to get back our original number.

We can turn 5,976,000,000,000,000,000,000,000 into a number between 1 and 10 by shifting the decimal 24 places to the left, giving us 5.976. We'll save that 24 as the exponent for our 10, giving us the final form

5.976\times10^{24}

5 0
3 years ago
Consider the function f(x)=-3x2+12x-5. What is the location of the vertex? Write your answer as an ordered pair.
natita [175]

Answer:

The (x,y) point of the vertex is usually labelled as:

Vertex = (h, k)

h = -b / 2a

k = ah^2 + bh + c

f(x) = -3x^2 + 12x -5

a = -3 b=12 c=-5

h = -12 / -6  therefore h = 2

k = -3*2^2 + 12*2 -5

k = -12 + 24 -5  therefore k = 7

Vertex (2, 7)

Source: http://www.1728.org/quadr3.htm

Step-by-step explanation:

7 0
3 years ago
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