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3 years ago

Calculate the volume of this solid

Mathematics

1 answer:

jekas [21]3 years ago

5 0

Answer:

<em>Hello There I think the Correct answer is 3</em>

<h2> Explanation</h2>

Because it shows that 9 x 3 = 27 and 3 x 9 = 27 Sooo...I think it 3.

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Equation equivalent to 2(x+3)

grigory [225]

Answer:

2x+6

Step-by-step explanation:

use distributive property

a(b+c)

ab+ac

plz brainliest :)

4 0

3 years ago

Billie solved the equation below by completing the square, but she got the incorrect solution. In which step did Billie first ma

Tanzania [10]

Answer:

step 2

Step-by-step explanation:

we have

$x^{2} +10x-49=0$ ---> given problem

step 1

Move the constant to the right side

$x^{2} +10x=49$

the step 1 is correct

step 2

Complete the square

$x^{2} +10x+5^2=49+5^2$

$x^{2} +10x+5^2=74$

<u><em>The step 2 is not correct</em></u>

step 3

Rewrite as perfect squares

$(x+5)^{2}=74$

step 4

take square root both sides

$x+5=\pm\sqrt{74}$

step 5

Find the values of x

$x=-5\pm\sqrt{74}$

$x=-5+\sqrt{74}$

$x=-5-\sqrt{74}$

5 0

3 years ago

In a lab, a substance was cooked by 42 C over a period of 7 hours at a constant rate. What was the change in temperature each ho

Mekhanik [1.2K]

Given that we have the change in temperature over 7 hours and we are looking for the change over 1 hour, we can divide the total change in temperature by 7. Thus, the change in temperature would be $\frac{42}{7} C^{\circ}$ .

Additionally, this can be solved by equations:

$\dfrac{42 \,\textrm{C}^{\circ}}{7 \,\textrm{hours}} = \dfrac{x \,\textrm{C}^{\circ}}{1 \,\textrm{hour}}$

$1 \,\textrm{hour} \cdot \dfrac{42 \,\textrm{C}^{\circ}}{7 \,\textrm{hours}} = x \,\textrm{C}^{\circ}$

$\dfrac{42}{7} \,\textrm{C}^{\circ} = x \,\textrm{C}^{\circ}$

$\dfrac{42}{7} = x$

By using two different methods, we can determine that the change each hour was equal to 42/7 C° per hour.

6 0

3 years ago

How do u make 3/4 in a mix number as a whole number or decimal?

KengaRu [80]

In decimal form it's .75 and that's all you can make it

7 0

2 years ago

If a=8, b=6 and c=2 what is the value of: 2ac/b

gayaneshka [121]

We need to substituter the values for the variables. 2(8)(2)/(6), or 32/6, or 5.3333

8 0

3 years ago