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3 years ago

Identify how each number would be represented in scientific notation.

Mathematics

2 answers:

Mila [183]3 years ago

7 0

Answer:

a= 5.89

b= 6

c= 5.21

d= -5

Step-by-step explanation:

right edg 2020

Lubov Fominskaja [6]3 years ago

6 0

Answer:

1. 5.89×10^6

a= 5.89

b= 6

2. 5.21×10^-5

c= 5/21

c= -5

Step-by-step explanation:

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Answer: ∠A = 70°

because ABC is an isosceles triangle and AB = AC

=> ∠B = ∠C = 55°

=> ∠A = 180-(∠B + ∠C) = 180° - 55°.2 = 70°

Step-by-step explanation:

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Ciara is naking a new outfit she needs 2 1/2 yards of the fabric for the shawl and 1 3/4 yards of fabric for the dress. If she h

valentina_108 [34]

Answer:

1 1/4 yards

$20

Step-by-step explanation:

The amount of fabric more that she needs can be determined by subtracting the sum of the yards needed for the shawl and the dress from the fabric she has

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$2\frac{1}{2} + 1\frac{3}{4}$

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Yards needed

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3 years ago

Find the y-intercept of 2x - 3y = 6

Ksju [112]

Answer:

(0, - 2)

Step-by-step explanation:

The y-intercept is the value of y when x = 0. Substitute 0 for x in the equation and solve for y.

$2x - 3y = 6$

$2(0) - 3y = 6$

$- 3y = 6$

$\frac{ - 3y}{ - 3} = \frac{6}{ - 3}$

$y = - 2$

When x = 0, y = - 2.

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2 years ago

Five times the number of test tubes in a school’s chemistry lab exceeds three times the number of beakers it has by 660. The sum

vladimir1956 [14]

5t=3b+660....and....2t+5B=450

from the first we can see that the t=(3b+650)/5 and using this value in the second.

(6+1320)/5+5b=450 making all have common denominator.

6b+1320+25b=2250

31b=930

b=30.. and 2t+5b=450

t=150

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3 years ago