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Tresset [83]
3 years ago
12

Lynn wants to multiply 44 × 305. She says that all she has to do is find 4×305 and then double that number.

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
5 0
Answer C is correct because 2×(4×305) is the same as (2×4)×305 and 2×4=8.
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Hey! Can someone please help me with this question? Really appreciate it
Olin [163]

Answer:

d = 0.112* 10^3

Step-by-step explanation:

Given

h = 8.4 * 10^3

d = \sqrt{\frac{3h}{2}}

Required

Find d

We have:

d = \sqrt{\frac{3h}{2}}

Substitute: h = 8.4 * 10^3

d = \sqrt{\frac{3*8.4 * 10^3}{2}}

d = \sqrt{\frac{25.2 * 10^3}{2}}

d = \sqrt{12.6 * 10^3}

Express as:

d = \sqrt{1.26 *10* 10^3}

d = \sqrt{1.26 *10^4}

Split

d = \sqrt{1.26} *\sqrt{10^4}

d = 1.122* 10^2

To write in form of: a * 10^b

The value of a must be: 0 \le a \le 1

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d = 0.1122* 10 * 10^2

d = 0.1122* 10^3

Approximate

d = 0.112* 10^3

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yuradex [85]

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Step-by-step explanation:

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3 years ago
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Use the commutative property of multiplication to identify which expression is equivalent to 6(2)(x).
11Alexandr11 [23.1K]
The commutative property is when you change the order but not the answer. To better understand what they are asking you, let's let x=1- 6 * 2 * 1=12; Answer A wouldn't be right because there are no 6,2, or x's. Remember you just change the ORDER not the GROUPING so Answer B is wrong too. Now Answer C and Answer D are left. Now you just need to look at the signs. 6(2) just means 6 TIMES 2 so pick the option with multiplication. So your answer is C. Hope I helped!
5 0
4 years ago
In the figure shown, r || s. If the measure of ∠ 2 = 146°, what is the measure of ∠ 7
borishaifa [10]

Answer:

34°

Step-by-step explanation:

1. First, let's find the measure of ∠1 because since r || s, that means ∠1 = ∠7 because they're both alternate exterior angles. Alternate exterior angles are congruent.

2. (Solving for ∠1)

  • 146 + x = 180
  • 146 + x - 146 = 180 - 146
  • x = 34

3. Now, since we know ∠1 = ∠7, ∠7 = 34°.

3 0
3 years ago
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