Ask question

Ask question

All categories

allochka39001 [22]

3 years ago

9

Which expression is equivalent to the given expression? -2.12 + 8r - 9 + 40 + 712 + 2 O A. 512 + 12r - 7 OB.5.12 + 4x + 11 O C.

-9.12 - 12r + 11 OD.-9.12 + 41 - 7

1 answer:

cricket20 [7]3 years ago

7 0

Answer:

use microsoft maths solver

You might be interested in

What is the perimeter of this square?<br> 5.9 yd

Nataliya [291]

Can you take a picture bc i don’t understand

4 0

3 years ago

Read 2 more answers

Find the area.<br> 5cm<br> 3cm<br> 4 cm

Ostrovityanka [42]

Answer:

6 cm²

Step-by-step explanation:

Since 3 side lengths are given, I assume that this figure is a triangle. The area of a triangle can be determined by using hero's formula.

$\text{Area of triangle} = \sqrt{\text{s(s - a)(s - b)(s - c)}$

⇒ s = Perimeter/2

⇒ a, b, and c = side lenths of triangle

<u>Replacing a, b, and c as the given side lengths:</u>

$\implies \text{Area of triangle} = \sqrt{\text{s(s - 5)(s - 3)(s - 4)}$

<u>Determining the perimeter of the triangle:</u>

$\text{Perimeter of triangle = Sum of it's side lengths}$

$\implies \text{Perimeter of triangle =}\ 5 + 4 + 3$

$\implies \text{Perimeter of triangle =}\ 12 \ \text{cm}$

<u>Determining the half of perimeter:</u>

$\text{Half of perimeter} = s = \dfrac{\text{Perimeter}}{2}$

$\implies s = \dfrac{12}{2}$

$\implies s = 6$

<u>Replacing the value of "s" in the formula:</u>

$\implies \text{Area of triangle} = \sqrt{\text{6(6 - 5)(6 - 3)(6 - 4)}$

<u>Evaluating the area:</u>

$\implies \text{Area of triangle} = \sqrt{\text{6(6 - 5)(6 - 3)(6 - 4)}$

$\implies \text{Area of triangle} = \sqrt{\text{6(1)(3)(2)}$

$\implies \text{Area of triangle} = \sqrt{\text{6(6)}$

$\implies \text{Area of triangle} = 6 \ \text{cm}^{2}$

6 0

2 years ago

Write the percent as a fraction or mixed number in simplest form. 72.5

barxatty [35]

Answer:

29/40

Step-by-step explanation:

6 0

3 years ago

What Is the value of 3^3 +7(2x-6) when x=4

Airida [17]

Answer:

18? i don't think it's right but i tried mental math

Step-by-step explanation:

PEMDAS

5 0

3 years ago

I need help on this one asap pliz

Doss [256]

$C(5,4)(.40)^4(1-.40)^1=5(.4)^4(.6)^1=0.0768$

That's 7.68% = 7.7% (rounded)

Note: C(5, 4) is the number of combinations of 5 things taken 4 at a time. You may have seen this written as $_5C_4$

In general, $C(n,r)=\frac{n!}{r!(n-r)!}$

8 0

3 years ago