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3 years ago

HELPPPPPPPP!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

dmitriy555 [2]3 years ago

4 0

Answer:

Step-by-step explanation:

- 14 + 30 / 4

16 / 4

16 ÷ 4

= 4

^-^

natita [175]3 years ago

3 0

Answer:

Step-by-step explanation:

-2×7=-14

-2×15=-30

-14--30=16

16÷4=4

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At a music store, the price of a set of speakers is $245, plus the sales tax of 6.5%. What is the total cost of the speakers, in

slavikrds [6]

In order to find out what the additional value of the sales tax would be,which is 6.5%, you have to find 1% of $245. Which is $2.45. As you're looking for 6.5%, you have to multiply $2.45 by 6.5, which gives you $15.93 (rounded). In order to find the cost including the sales tax, you have to add $15.93 to the original price of $245, which gives you $260.93. Therefore, the price of the speakers, including a sales tax of 6.5% is $260.93 Hope this helps :)

4 0

3 years ago

Read 2 more answers

-8.5n = 17 pls help me

erastova [34]

I believe the answer is n= -2

5 0

3 years ago

PASSAGE:

Art [367]

The shortest distance separating Julio from Sarah is 111.8ft

To know the distance of the shortest bridge between Julio and Sarah, the following procedure must be carried out.

We know that Julio walked 100ft to one side and Sarah walked 20ft to the opposite side, that is, on the y-axis they are 120ft apart.

On the other hand, Julio stayed by the river and Sarah walked 9ft away from the river, that is, on the x-axis they are separated by a distance of 59ft (assuming that the width of the river is 50ft).

To know the linear distance that separates them, it is necessary to use the following formula of the Pythagorean theorem.

c² = a² + b²

c= $\sqrt{a^{2} + b^{2} }$

From this operation we know the value of a and b:

a = 120ft

b = 59ft

Now we just have to replace the values in the formula.

c = $\sqrt{120^{2} + 59^{2} }$

c = $\sqrt{14400 + 3481}$

c = $\sqrt{17881}$

c = 133,7

However, 133.5ft is not the value of the bridge distance because Sarah went 9ft away form the river. Then a portion must be subtracted from her to calculate the exact portion of the distance above the river.

For this we must calculate the distance that separates them that is above the Earth, for this we use the same mathematical formula.

c = $\sqrt{20^{2} + 9^{2} }$

c = $\sqrt{400 + 81}$

c = $\sqrt{481}$

c = 21,9ft

So the distance a part of the Earth covers is 21.9ft. To find out how far the bridge should be over the river, we subtract 21.9ft from the total distance 133.7ft

133,7ft - 21,9ft = 111,8ft

Note: This question is incomplete because it has missing information (the length and width of the river).

Learn more in: brainly.com/question/25292638