3 years ago

Simplify. 2 × (3-1) + 3 007 20 7 8 a 0 10 011

Mathematics

1 answer:

IgorLugansk [536]3 years ago

6 0

Answer:

Step-by-step explanation:

2 x (2) + 3

= 4 + 3

= 7

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In the number 12.345, the 3 is in the ________ place.

Kamila [148]

Answer:

The value of 3 is in the tenths place.

Step-by-step explanation:

Given : Number 12.345.

To find : In the number 12.345, the 3 is in the what place ?

Solution :

According to place value system,

Tens Ones Tenths Hundredths Thousandths

1 2 3 4 5

The value are $12.345=1\times 10+2\times 1+3\times 0.1+4\times 0.01+5\times 0.001$

Therefore, The value of 3 is in the tenths place.

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3 years ago

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This hole equation equals -1.

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3 years ago

Can anyone help me on this question?

MissTica

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2 years ago

AC = 8, AB = 2x + 20, and BC = 2x + 24. Find x.

pickupchik [31]

Answer:

Answer: x is -9

Step-by-step explanation:

If it's a line AC with a point B between;

AC = AB + BC

substitute in terms of x :

$8 = (2x + 20) + (2x + 24)$

group x terms in a same bracket, and constants in their bracket

$8 = (2x + 2x) + (20 + 24)$

operate the brackets:

$8 = 4x + 44$

subtract 44 from both sides:

$8 - 44 = (4x + 44) - 44$

simplify:

$- 36 = 4x$

divide all sides by 4:

$\frac{ - 36}{4} = \frac{4x}{4} \\ \\ x = - 9$

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3 years ago

What is the area of a circle whose radius is 15 inches? Round your answer to the nearest tenth of a square inch.

boyakko [2]

Answer:

706.86 in^2

Step-by-step explanation:

The formula for the area of a circle is $A = \pi r^{2}$

Since your radius was given (15 in) the area is:

$A=\pi (15)^{2} =225\pi =706.86 in^2$

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3 years ago