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3 years ago

What is the equivalent expression after this is simplified

Mathematics

2 answers:

mafiozo [28]3 years ago

8 0

Answer: -6 - 5k

Step-by-step explanation:

-3(2+4k) +7(2k-1)

-6+(-12k) + 14k -7k

-6 -12k + 14k - 7k

-6 -5k

JulijaS [17]3 years ago

6 0

Answer:

2k - 13

Step-by-step explanation:

Perform the indicated multiplication using the Distributive Property of Multiplication.

We get -6 - 12k + 14k - 7.

Next, we combine like terms; - 12k + 14k comes to 2k and

-6 - 7 comes to -13.

The desired equivalent expression is thus

2k - 13

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What is the answer I’m not sure I’m right

trasher [3.6K]

Answer:

x=0

Step-by-step explanation:

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x^2 +6x =0

x^2=0

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3 years ago

PLS AWNSER ASAP!!Which expression can be used to determine the length of segment ZY? On a coordinate plane, triangle X Y Z has p

MArishka [77]

Sqrt(8^2 + 3^2)

Y is 3,4
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3 years ago

The sides of an triangle measure six inches eight inches and ten inches the triangle has one 90 degree angle what typ of trangle

MaRussiya [10]

It would be a right triangle.

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3 years ago

Robert is lying on the ground, looking at the top of a flagpole. The angle of elevation to the top of the flagpole is

NeTakaya

Answer:

Height of flagpole = 571 ft

Step-by-step explanation:

Given:

Angle of elevation to the top of the flagpole is 55° .

Distance from the eyes to the base of flagpole = 400 ft.

To find the height of the flagpole.

Solution:

We can draw the situation as a right triangle as shown below.

In triangle ABC.

$BC=400\ ft$

∠C= 55°

To find the length AB (height of the flagpole).

Applying trigonometric ratio :

$\tan\theta=\frac{Opposite\ side}{Adjacent\ side}$

$\tan C=\frac{AB}{BC}$

Plugging in values.

$\tan 55\°=\frac{AB}{400}$

Multiplying both sides by 400.

$400\tan 55\°=\frac{AB}{400}\times 400$

$571.26=AB$

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6 0

3 years ago

If you flipped the coin 100 times, how many heads would you expect to get? Explain your answer.

Irina18 [472]

Answer:

You would expect to get 50 heads

Step-by-step explanation:

Each time you flip a coin you will either get heads or tails. This means that you have a 1/2 probability of getting heads. If you use this then you need to multiply 1/2 and 100 to get the expected amount of heads. Multiplying by a half is just dividing by 2. Therefore, the answer is 100/2 = 50. The answer is 50 heads

5 0

3 years ago