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3 years ago

There are 69 cards in a card game deck. How many cards in 7 decks?

Mathematics

1 answer:

nevsk [136]3 years ago

7 0

Answer:

69×7=60×7+9×7 and if 10×7=70 then 6×70=420 and 9×7=70-7=63

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Determine the distance between -8 and 0.

Flauer [41]

This one's simple..
B) -8 units

5 0

4 years ago

Find the value of x.

Colt1911 [192]

Answer:

x = 16 2/3

Step-by-step explanation:

The altitude divides the triangle into similar triangles. We can form the ratio between the hypotenuse and the short leg for two of the triangles. Those ratios will be a proportion:

10/6 = ((x-6) +6)/10

100/6 = x . . . . . multiply by 10 and simplify

x = 16 2/3

7 0

3 years ago

Law of cosines.Anyone good in Trigonometry?

marin [14]

Answer:

$c=11.8\ units$

Step-by-step explanation:

we know that

The formula of law of cosines is equal to

$c^2=a^2+b^2-2(a)(b)cos(C)$

where

a, b and c are sides. C is the angle opposite side c

In this problem we have

$a=3\ units\\b=10\ units$

$C=120^o$

substitute the given values

$c^2=3^2+10^2-2(3)(10)cos(120^o)$

$c^2=109-(60)cos(120^o)$

$c^2=109-(60)(-0.5))$

$c^2=109+30$

$c^2=139$

$c=11.8\ units$

3 0

3 years ago

What is the definition of a covalent bond?

Fofino [41]

Answer:

D: A bond between two atoms

Step-by-step explanation:

6 0

3 years ago

When finding the length of the hypotenuse of a right triangle why might you approximate the answer?

sammy [17]

Answer:

Because the hypotenuse might not be a perfect square

Step-by-step explanation:

8 0

3 years ago