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lyudmila [28]
3 years ago
13

6x^+4(x^-1) simply this question

Mathematics
1 answer:
Nadusha1986 [10]3 years ago
6 0
1. when you see 4(x² - 1), then you have to multiply 4 with everything in the bracket. keep in mind that you always have to be cautious of the sign whether it is a positive or a negative.

positive ×/÷ positive = positive
negative ×/÷ negative = positive
positive ×/÷ negative = negative
negative ×/÷ positive = negative

^ you have to remember this.

2. only like terms (same alphabet) can plus or minus each other.

3. simplify by taking out the common factor and placing it outside the bracket.

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Fiona finds that the distance between two cities is 83,400,000 millimeters. What is the distance between the two cities in kilom
Svet_ta [14]

Answer:

  • B) 83.4 kilometers

Step-by-step explanation:

According to table we have units:

  • Kilo = 1000     ⇒ km = 1000 m
  • Milli = 0.001   ⇒  mm = 0.001 m

Comparing the two units we can see that:

  • 1  Km = 1000/0.001 = 1000000 mm

Then we can convert the distance in mm to Km:

  • 83400000 mm =
  • 83400000 / 1000000 km =
  • 83.4 km

Correct choice is B

8 0
3 years ago
If my fraction is 140/216, what is that in simplest form?
mezya [45]
Divide the numerator and denominator by 4:

140 / 4 = 35
216 / 4 = 54

So we have:

35/54

8 0
4 years ago
Read 2 more answers
CHAD HAS 1/2 TON OF GRAVEL TO SPREAD EQUALLY IN 8 SQUARE YARDS FOR HIS DRIVEWAY. HOW MANY TONS OF GRAVEL WILL BE SPREAD IN EACH
Igoryamba

Answer:

1/16

Step-by-step explanation:

½ ton ==> 8 sq. yards

so, each sq. yard needs ½ ÷ 8 = 1/16 ton

4 0
3 years ago
What is the measure of x in degrees ?
mr Goodwill [35]

Answer:

x = 35°

Step-by-step explanation:

Same side interior angles are supplementary, or they add up to 180°. So write an equation:

x+145=180

Solve for x. Subtract 145 from both sides:

x+145-145=180-145\\\\x=35

The value of x is 35°.

:Done

8 0
3 years ago
A rectangle has a height of 3 cm and width of 5cm. A proportional rectangle has a height of 12cm. What would be the width?
Schach [20]

The ratio will be same

  • Let width be x

\\ \sf\longmapsto \dfrac{3}{5}=\dfrac{12}{x}

\\ \sf\longmapsto 3x=5(12)

\\ \sf\longmapsto 3x=60

\\ \sf\longmapsto x=\dfrac{60}{3}

\\ \sf\longmapsto x=20cm

5 0
3 years ago
Read 2 more answers
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