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3 years ago

Round 7180 and 4920 to the nearest 1000

Mathematics

1 answer:

Fantom [35]3 years ago

8 0

7180 round to 7000 and 4920 rounds to 5000

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A right triangle with side a being 7 and the hypotenuse is 8. Find the measure of the missing side length. Round your answer to

Virty [35]

Answer:

Step-by-step explanation:

use the Pythagoras' theorem

formula for an ABC triangle( right angled)

AB is height

BC is hypotenuse

CA is length

$BC^{2}$ = $AB^{2}$ + $CA^{2}$

in your case

AB is 7

BC is 8

CA is unknown so we write x

$8^{2}$ = $7^{2}$ + $x^{2}$

64=49+ $x^{2}$

64-49= $x^{2}$

15= $x^{2}$

$\sqrt{15}$ =x

3.87=x

4=x

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3 years ago

A shop sells a party hat at x dollars and a mask at y dollars. On a particular morning, 3 hats and 4 masks were sold for $27. In

Aleks [24]

Answer:

Cost of each hat: $5

Cost of each mask: $3

Step-by-step explanation:

Let be "x" the cost in dollars of a party hat and "y" the cost in dollars of a mask.

Set up a System of equations using the information given in the exercise:

$\left \{ {{3x+4y=27} \atop {3x+6y=33}} \right.$

You can use the Elimination Method to solve this System of equations:

1. You can multiply the first equation by -1.

2. Then you must add the equations.

3. Solve for "y".

Then:

$\left \{ {{-3x-4y=-27} \atop {3x+6y=33}} \right.\\.....................\\2y=6\\\\y=\frac{6}{2}\\\\y=3$

4. Now you can substitute the value of "y" into any original equation.

5. Finally, solve for "x" in order to find its value.

Then:

$3x+4(3)=27\\\\3x=27-12\\\\x=\frac{15}{3}\\\\x=5$

5 0

4 years ago

Compete the equatuon descibing how x and y are related

Minchanka [31]

I honestly don’t even know how to explain this- but ik that 3 should be alright to type in bc if you were to write it on a graph you would move 1 unit to the right and 3 units up from there based on the coordinates after the origin (0,0).

4 0

3 years ago

A coach needs both small and large cones to set up an obstacle course. The coach knows that there are fewer than 30 cones in the

Pepsi [2]

Since they are FEWER than 30 total cones, the sum of x small cones and y large one must be LESS THAN 30: x+y <30
He needs AT LEAST a dozen (12), so that means that 12 will work or more than 12:
$y \geqslant 12$

5 0

3 years ago

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A certain function is defined as "multiply the input by -3/4,then add 2 I need the function rule asap

Olegator [25]

Hi there!

The answer is:
$y = - \frac{3}{4} x + 2$

Let the input be represented by X. We can see we have to multiply it by -3/4, so we get -3/4X. To find our outcome (which is represented by y), we only have to add 2 to the function.
y (outcome) = - 3/4x (income) + 2

$y = - \frac{3}{4} x + 2$

7 0

4 years ago

Read 2 more answers