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Ksenya-84 [330]
3 years ago
10

Find the value of 1415×211 Although these numbers aren't quite as nice as the ones from the example, the procedure is the same,

so the difficulty is the same same excepting the ability to perform the calculation in your head.
Mathematics
1 answer:
BabaBlast [244]3 years ago
9 0

Answer:

298565

Step-by-step explanation:

Given problem,

1415 × 211

∵ Direct multiplication is quite tough so we can split the number into smaller one for making the multiplication easier,

= (1400 + 15) × (210 + 1)

By using distributive property,

= 1400 × (210 + 1) + 15(210 + 1)

Again by distributive property,

= 1400 × 210 + 1400 + 15 × 210 + 15

Simplifying,

=  294000 + 1400 + 3150 + 15

= 298565

Hence, 1415 × 211 = 298565

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4x2 + 8x - 7 - (3x2 - X+9)​
Andreas93 [3]

Answer:

<h2>{x}^{2}  + 9x - 16</h2>

Step-by-step explanation:

4 {x}^{2}  + 8x - 7 - (3 {x}^{2}  - x + 9)

When there is a (-) in front of an expression in parentheses, change the sign of each term in the expression:

4 {x}^{2}  + 8x - 7 - 3 {x}^{2}  + x - 9

Collect like terms

4 {x}^{2}  - 3 {x}^{2}  + 8x + x - 7 - 9

{x}^{2}  + 9x - 7 - 9

Calculate

{x}^{2}  + 9x - 16

Hope this helps...

Good luck on your assignment...

5 0
3 years ago
Read 2 more answers
A farmer sells 7.6 kilograms of apples and pears at the farmer's market. 4/5 of this weight is
gtnhenbr [62]

Answer:

1.52

Step-by-step explanation:

5 0
3 years ago
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A square patio has an area of 200 square feet. How long is each side of the patio to the nearest tenth?
Darya [45]
If patio is square it means that area of if is A=a^2 where a is one side
Now we can substitute A=200 and solve eq
a^2=200
a=\sqrt{200}
a=14.1421
Now we are rounding to the nearest tenths
a=14.1 because next number is 4 and is less then 5.
The result is 14.1
6 0
3 years ago
Does anyone know this??
STALIN [3.7K]
Hi there! The answer is C.

Explanation:
We have the following equation:

\frac{8}{15} = \frac{x}{6}
To solve this type of equation (with an x in the denominator of a fraction) we must cross-multiply the numerator and the denominator.

15 \times x = 8 \times 6
Multiply

15x = 40
Divide both sides by 15.

x = \frac{40}{15} = 2 \frac{2}{3}
~ Hope this helps you!
5 0
3 years ago
Read 2 more answers
How do you put this in simplest form<br> 1/4 divided 3/8
klemol [59]

Answer:

8 12 = 0.6667

Step-by-step explanation:

How to Calculate 1/4 Divided by 3/8

1 4 / 3 8.

1 4 x 8 3.

1 x 8 4 x 3 = 8 12.

the answer is 8 12 = 0.6667.

8 0
2 years ago
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