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3 years ago

(01.01) Evaluate 12 − 6 + (14 − 8)2 = ____________. Numerical Answers Expected! Answer for Blank 1:

1 answer:

8 0

According to PEMDAS (Parenthesis, exponents, multiplication, division, addition, subtraction), we should start off with doing (14 - 8). Using simple math you can find out that the answer would be six.

Now we should do the multiplication, because that comes next in PEMDAS. Since you have found the answer in the parenthesis, you can should substitute it for the answer, in this case, it substitute it for six.

(Because you did not put an ^ before the two, I am just going to assume that it is times two.)

So now we just do 6 x 2, to get 12. After that we just to do 12 - 6, which equals six, and then add that to our other number 12, to get our answer of 18.

So the answer is 18 or eighteen.

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Find the cost of 100gram at 85p per 1/2 kg?

Yuki888 [10]

85p per (1/2) kg.

1 kg = 1000g, (1/2)kg = (1/2) * 1000 = 500 g

It means:

500g cost 85p

1g would cost 85p/500

100g would then cost (85p/500) * 100 = 19p

Cost of 100g is = 19p

Hope this explains it.

6 0

4 years ago

The surface area of a sphere is 275.56 1 cm? What is the approximate volume of the sphere?

skad [1K]

Answer:

$V=430.19\ cm^3$ or $V=136.93\pi\ cm^3$

Step-by-step explanation:

The surface area of a sphere is:

$A_s=4\pi r^2$

Where r is the radius of the sphere

In this case we know that $A_s = 275.561\ cm^2$

$4\pi r^2=275.561$

We solve the equation for r

$4\pi r^2=275.561\\r^2 = \frac{275.561}{4\pi}\\\\r=\sqrt{ \frac{275.561}{4\pi}}\\\\r=4.683\ cm$

Now we know the radius of the sphere.

The volume of a sphere is:

$V=\frac{4}{3}\pi r^3$

We substitute the value of the radius in the formula

$V=\frac{4}{3}\pi (4.683)^3$

$V=430.19\ cm^3$

5 0

4 years ago

swat32

Answer:1700

Step-by-step explanation:

In total, he traveled 1700 feet. He had to get to the 250ft starting point somehow, so you would count that as the overall total distance traveled.

4 0

3 years ago

Please help! Correct answer only, please! Consider the matrix shown below: Find the determinant of the matrix Q. A. -67 B. -65 C

Nonamiya [84]

Answer: d) 67

<u>Step-by-step explanation:</u>

$determinant\ \left[\begin{array}{ccc}a&b&c\\d&e&f\\g&h&j\end{array}\right] = a\cdot det\left[\begin{array}{cc}e&f\\h&j\end{array}\right] -\ b\cdot det\left[\begin{array}{cc}d&f\\g&j\end{array}\right] +\ c\cdot det\left[\begin{array}{cc}d&e\\g&h\end{array}\right]$

$determinant\ \left[\begin{array}{ccc}2&3&4\\-3&2&1\\5&-1&6\end{array}\right] \\\\\\= 2\cdot det\left[\begin{array}{cc}2&1\\-1&6\end{array}\right] -\ 3\cdot det\left[\begin{array}{cc}-3&1\\5&6\end{array}\right] +\ 4\cdot det\left[\begin{array}{cc}-3&2\\5&-1\end{array}\right]\\\\\\=2[2(6)-1(-1)]-3[-3(6)-1(5)]+4[3(-1)-2(5)]\\\\\\=2(13)-3(-23)+4(-7)\\\\\\=26+69-28\\\\\\=\large\boxed{67}$

8 0

4 years ago

a car accelerated from 88 feet per second (fps), to 220 fps in exactly 3 seconds, assuming the acceleration was constant, what w

Dovator [93]

A=(V-V₀)/t
a=(220-88)/3=44 ft/s²
Acceleration is 44 ft/s²

8 0

4 years ago