Ask question

Ask question

All categories

3 years ago

12

Place parentheses in these expressions 12×2+2^3;value:120

1 answer:

telo118 [61]3 years ago

6 0

Answer:

12x(2x2^3)=120

Step-by-step explanation:

12x2+2^3=120

(12x2)+2^3=32

12x(2+2^3)=?

12x(2+8)=?

12x10=120

You might be interested in

Find two positive numbers whose difference is 30 and whose product is 2584.

kvasek [131]

Answer:

$38$ and $68$ .

Step-by-step explanation:

Let $x$ be the smaller one of the two number.

$x$ must be a positive integer. The other number would be $(x + 30)$ .

The question states that the product of the two numbers is $2584$ . In other words:

$x\, (x + 30) = 2584$ .

Rearrange this equation and solve for $x$ :

$x^{2} + 30\, x - 2584 = 0$ .

The first root of this quadratic equation would be:

$\begin{aligned}x_{1} &= \frac{(-30) + \sqrt{30^{2} - 4 \times (-2584)}}{2} \\ &= \frac{(-30) + \sqrt{900 + 10336}}{2} \\ &= \frac{(-30) + \sqrt{11236}}{2} \\ &= \frac{(-30)}{2} + \sqrt{\frac{11236}{2^{2}}} \\ &= (-15) + \sqrt{2809} \\ &= (-15) + 53 \\ &= 38 \end{aligned}$ .

Similarly, the second root of this quadratic equation would be:

$\begin{aligned}x_{1} &= \frac{(-30) - \sqrt{30^{2} - 4 \times (-2584)}}{2} \\ &= (-15) - 53 \\ &= -68\end{aligned}$ .

Since the question requires that both numbers should be positive, $x > 0$ . Therefore, only $x = 38$ is valid.

Hence, the two numbers would be $38$ and $(38 + 30)$ , which is $68$ .

6 0

3 years ago

Read 2 more answers

A rectangular prism has a length of 734 inches, a width of 312 inches, and a height of 6 inches. Mario has a storage container f

fredd [130]

Answer: $27.6\ in.^3$

Step-by-step explanation:

Given

Length of Prism is $l= 7.34\ in.$

The width of Prism is $w=3.12\ in.$

The height of Prism is $h=6\ in.$

The volume of a The height rectangular prism is given as

$V=l\times w\times h$

Substituting values we get

$\Rightarrow V=7.34\times 3.12\times 6=137.404\ in.^3$

Volume of storage $V_s=165\ in.^3$

The difference in volume is

$\Rightarrow 165-137.404=27.59\approx 27.6\ in.^3$

8 0

3 years ago

A wildlife preservation group records the number of squirrels in a city park. The first count recorded is 30 squirrels. A second

ipn [44]

Answer:

A F(x)=30x

Step-by-step explanation:

just plug number in to the equations to see which one matches

5 0

3 years ago

Read 2 more answers

42 square feet to square inches

dolphi86 [110]

Answer:

6048 square inches

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

2/3x+4=2x true or false

aleksley [76]

Answer: False !!!

do the math

5 0

3 years ago