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Juliette [100K]
3 years ago
10

Write in scientific notation 0.00042 urgent !!!!

Mathematics
2 answers:
Black_prince [1.1K]3 years ago
5 0

42 \cdot 10^{-4}

amm18123 years ago
5 0

Answer:

4.2 * 10^-3

Step-by-step explanation:

As scientific notation cannot include answers more than 10, the other answer is wrong.

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ABC is a straight line.The length of AB is four times the length of BC.AC=75
bearhunter [10]

Answer:

AB = 60

Step-by-step explanation:

Given AC = 75 and AB = 4BC, then

AB + BC = AC, that is

4BC + BC = 75

5BC = 75 ( divide both sides by 5 )

BC = 15

Thus

AB = 4BC = 4 × 15 = 60

7 0
3 years ago
Identify the correct explanation and the similarity statement for the similar triangles.
Tatiana [17]

Answer:

Option B

Step-by-step explanation:

From the picture attached,

In ΔABC,

m∠B = m∠C = 75° [Isosceles triangles]

By applying triangle sum theorem,

m∠A + m∠B + mC = 180°

m∠A + 75° + 75° = 180°

m∠A = 180° - 150°

m∠A = 30°

In triangle PQR,

m∠P = m∠Q [Isosceles triangle]

By applying triangle sum theorem,

m∠P + m∠Q + m∠R = 180°

2(m∠P) + 30° = 180°

m∠P = 75°

m∠P = m∠Q = 75°

In ΔABC and ΔRPQ,

m∠B ≅ m∠Q [Given]

m∠C ≅ m∠R [Given]

Therefore, by AA property of similarity of two triangles, both the triangles will be similar.

ΔABC ~ ΔRPQ

Option B will be the answer.

3 0
3 years ago
The cost of a taxi ride is a linear function of the distance traveled. If a 5-mile ride costs $12 and a 9-mile ride costs $14, w
dalvyx [7]
 it should be  c=0.5m+9.5
8 0
3 years ago
Read 2 more answers
Enter the equation of the line in slope-intercept form.
Dominik [7]

Answer:

y=2x+1

Step-by-step explanation:

4 0
3 years ago
6. Joe runs 3/4 mile in 1/2 hour. Find his average speed in miles per hour.
son4ous [18]

Answer:

1.5 MPH

Step-by-step explanation:

3/4 = 0.75

3/4 x 2 = 0.75 x 2 = 1.5

3 0
3 years ago
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