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2 years ago

How do I evaluate the expression (8-4) x 2

Mathematics

1 answer:

jeyben [28]2 years ago

5 0

Step-by-step explanation:

=(8-4) x 2

=4 x 2

= 8

Hope it helps 

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Karolina [17]

Answer:

(x, y) ⇒ (½x, ½y)

(x, y) ⇒ (x + 7, y + 7)

Step-by-step explanation:

each x value of P'Q'R' is half of the x value for PQR

each y value of P'Q'R' is half of the y value for PQR

each x value of P"Q"R" is seven units to the right of the x value for P'Q'R'

each y value of P"Q"R" is seven units above the y value for P'Q'R'

8 0

3 years ago

Two containers designed to hold water are side by side, both in the shape of a cylinder. Container A has a radius of 13 feet and

emmasim [6.3K]

Answer:

The percentage ≅ 48.4%

Step-by-step explanation:

* Lets revise how to find the volume of a container shaped cylinder

- The volume of any container = area of its base × its height

- The base of the cylinder is a circle, area circle = 2 π r,

where r is the length of its radius

* In container A:

∵ r = 13 feet , height = 13 feet

∴ Its volume = π (13)² × (13) = 2197π feet³

* In container B:

∵ r = 9 feet , height = 14 feet

∴ Its volume = π (9)² × (14) = 1134π feet³

* So to fill container B from container A, you will take from

container A a volume of 1134π feet³

- The volume of water left in container A = 2197π - 1134π = 1063π feet³

* To find the percentage of the water that is full after pumping

is complete, divide the volume of water left in container A

by the original volume of the container multiplied by 100

∴ The percentage = (1063π/2197π) × 100 = 48.3841 ≅ 48.4%

7 0

4 years ago

Simplify $\sqrt[3]{\frac{9\sqrt{5}}{2\sqrt{3}}\cdot\frac{5\sqrt{2}}{8\sqrt{2}}}$ and rationalize the denominator. The result can

Alecsey [184]

Answer:

15+6+2=23

Step-by-step explanation:

$\sqrt[3]{\frac{9\sqrt{5}}{2\sqrt{3}}\cdot\frac{5\sqrt{2}}{8\sqrt{2}}}\\=\sqrt[3]{\frac{9\sqrt{5}}{2\sqrt{3}}\cdot\frac{5}{8}}\\=\sqrt[3]{\frac{45\sqrt{5}}{16\sqrt{3}}}\\=\sqrt[3]{\frac{45\sqrt{15}}{16}}\\=\sqrt[3]{\frac{3\cdot\sqrt{15^3}}{16}}\\=\frac{\sqrt[3]{3}\cdot\sqrt{15}}{2\cdot\sqrt[3]{2}}\\=\frac{\sqrt[3]{6}\cdot\sqrt{15}}{2}$

we want it in the form of $\frac{\sqrt{a}\sqrt[3]{b}}{c}$ , so a = 15, b=6, c=2

also this is the minimum possible value, as we cannot simplify it further

7 0

2 years ago

Pls pls pls help answer quick

lord [1]

Answer:

120 m

Step-by-step explanation:

To find the volume of the prism on the bottom, multiply length times height times width

3x3x12=108

next is the pyramid on top.

Formula is V=bh x 1/2

8, the height, times 3, the base, = 24

24x 1/2 or 24/2 = 12

108+12= 120

120 m

5 0

3 years ago

What are solutions to the quadratic equation 2x^2+6x-10=x^2+6

Alex

Answer:

Step-by-step explanation:

$2x^2+6x-10=x^2+6\qquad\text{subtract}\ x^2\ \text{and 6 from both sides}\\\\x^2+6x-16=0\\\\x^2+2x-8x-16=0\\\\x(x+2)-8(x+2)=0\\\\(x+2)(x-8)=0\iff x+2=0\ \vee\ x-8=0\\\\x+2=0\qquad\text{subtract 2 from both sides}\\x=-2\\\\x-8=0\qquad\text{add 8 to both sides}\\x=8$

4 0

3 years ago

Read 2 more answers