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aliina [53]
3 years ago
10

Use the distributive property to simplify the expression. –7(8x – 3) + x

Mathematics
2 answers:
lisov135 [29]3 years ago
6 0
-7 ( 8x - 3 ) + x
8 - 3 = 5
-7 * 5x + x
-35x + x
Answer:
-35x + x
 <span />
denis-greek [22]3 years ago
5 0
The answer is -56x+2+x
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When writing twenty-one-and-a-half-trillion in scientific notation, what is the exponent needed on the base ten?
Nat2105 [25]
1 trillion is 10^9.

Thus, 21 1/2 trillion is    21 1/2 times 10^9, or 2.15 times 10^10

Hope this helps.  If not, ask for clarification.
5 0
3 years ago
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What is the length of arc S?<br> (The angle in the figure is a central angle in radians)
IgorC [24]

Answer:

π/90 or 0.0035 units

Step-by-step explanation:

equation: <em>length of the arc = ∠of the angle/360 * circumference</em>

Substitute: <em>S = 0.4/360 * 10π</em> --> C = 2πr

Simplify: S = 1/900 * 10π

Simplify: S = π/90 ≈ 0.003489 units

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3 years ago
7. Find DE.<br> 11-25<br> E<br> А<br> 4x + 1<br> D<br> С
Arlecino [84]

Answer:

  • DE = 37

Step-by-step explanation:

AD = DC and BE=EC ⇒

DE = 1/2AB

  • 4x + 1 = 1/2(11x - 25)
  • 2(4x + 1) = 11x - 25
  • 8x + 2 = 11x - 25
  • 11x - 8x = 2 + 25
  • 3x = 27
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DE = 4*9 + 1 = 36 + 1 = 37

3 0
2 years ago
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mark and carlos started saving money at the same time. Mark saved 1.20 daily and Carlos saved 0.30 more than Mark each day. How
Slav-nsk [51]
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7 0
3 years ago
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Marrrta [24]

Given:

\dfrac{2x-3}{x-4}=\dfrac{2}{3}

To find:

The value of x.

Solution:

We have,

\dfrac{2x-3}{x-4}=\dfrac{2}{3}

By cross multiplication, we get

3(2x-3)=2(x-4)

6x-9=2x-8

Isolating variable terms, we get

6x-2x=9-8

4x=1

Divide both sides by 4.

x=\dfrac{1}{4}

x=0.25

Therefore, the solution of the given equation is x = 0.25.

7 0
3 years ago
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