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2 years ago

Help me PLEASE quick I will give you brainliest

Mathematics

2 answers:

Tema [17]2 years ago

8 0

Answer:

56. Someone correct me if I'm wrong.

Step-by-step explanation:

Since this is a right triangle, we can use the Pythagorean Theorem, which is a² + b² = c²

a and b are the legs, and c is the hypotenuse. Here, we know the length of one leg and the hypotenuse. So...

a² + 42² = 70²

First, we need to square these numbers. 42² is 1764. 70² is 4900. So...

a² + 1764 = 4900

Now, we can subtract 1764 from both sides.

a² + 1764 - 1764 = 4900 - 1764

That would give us...

a² = 3136

Now, we square root 3136.

So...

$\sqrt{3136}$ = 56

The missing side <em>should be</em> 56.

slamgirl [31]2 years ago

5 0

68 i am pretty sure.

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Can you explain to me (detailed) on how to do this problem? I will give you a brainly if you get this right.

7nadin3 [17]

Answer:

60 m^2

Step-by-step explanation:

To solve the area, solve the triangle and rectangle separately.

Solve the rectangle:

Multiply 10 and 4 to get the area of 40 m^2.

Solve the triangle:

Multiply 10 and 4, then divide by 2. The formula for a triangle's area is base*height/2. The area is 20.

Add together:

40+20 = 60 m^2

6 0

2 years ago

Which of the following equations are equivalent to 2x(x - 2) = x? Select two that apply.

Verdich [7]

Answer: C 2x(x - 2) - x = 0

and <u>B</u> 2x² – 5x=0

Step-by-step explanation:

You get 2x(x - 2) - x = 0 by subtracting x from both sides of the original equation.

Then take 2x(x - 2) - x = 0 and distribute to get 2x² - 4x -x = 0

combine the x terma and you end up with 2x² – 5x=0

4 0

2 years ago

Write an expression for the eighth partial sum of the series using summation notation

balandron [24]

Answer:

option B

Step-by-step explanation:

9/10 + 6/5 + 3/2...........

We find the difference between the terms

$\frac{6}{5} - \frac{9}{10}$

$\frac{12}{10} - \frac{9}{10} = \frac{3}{10}$

We will get the same difference when we subtract consecutive terms.

so , d= 3/10, a= 9/10

we find the formula for nth term

a_n = a+(n-1) d

$a_n = \frac{9}{10} + (n-1)\frac{3}{10}$

$a_n = \frac{9}{10} +\frac{3}{10}n-\frac{3}{10}$

$a_n = \frac{6}{10} +\frac{3}{10}n$

$a_n = \frac{3}{5} +\frac{3}{10}n$

we need to find eighth partial sum so we take n=1 to 8

sum of 8 terms ( $\frac{3}{5} +\frac{3}{10}n$ )

So option B is correct

4 0

2 years ago

The perimeter of a rectangular city park is 1,428 feet. The length is 78 feet more than twice the width. Find the length and wid

bogdanovich [222]

Answer:

Length = 502 ft

Width = 212 ft

Step-by-step explanation:

Recall the formula for the perimeter of a rectangle of length "L" and width "W":

Perimeter = 2 L + 2 W = 1428 ft

Now, since the length is 78 ft more than twice the width, then we can write this in mathematical form as:

L = 2 W +78

so, 2 W = L -7 8

and now replace "2 W" with it equivalent "L - 78" in the first perimeter equation and solve for "L":

2 L + L - 78 = 1428

3 L = 1428 + 78

3 L = 1506

L = 1506/3

L = 502 ft

Then the width W can be obtained via:

2 W = L - 78

2 w = 502 -78

2 W = 424

w = 212 ft

6 0

3 years ago

Which quadrant are the following points located:

Rzqust [24]

Answer:

Step-by-step explanation:

x is positive and y is negative

4 0

2 years ago