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Alexeev081 [22]
3 years ago
15

What value will make the equation true? -2.1 - ? = -1 1/2

Mathematics
2 answers:
Olin [163]3 years ago
5 0

Answer:

-0.6 or -⅗

Step-by-step explanation:

-2.1 - X = -1 1/2

-2.1 - X = -1.5

X = -2.1 + 1.5

X = -0.6 or -⅗

attashe74 [19]3 years ago
3 0

Answer:

(-0.6)

Step-by-step explanation:

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marishachu [46]

Answer:

  a) (3, -4), (2, 4), (-5, -6)

  b) (4, 3), (-4, 2), (6, -5)

Step-by-step explanation:

a) Reflection in the x-axis negates the y-coordinate:

  (x, y) ⇒ (x, -y)

  (3, 4) ⇒ (3, -4)

  (2, -4) ⇒ (2, 4)

  (-5, 6) ⇒ (-5, -6)

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b) Reflection in the line y=x swaps the x- and y-coordinates:

  (x, y) ⇒ (y, x)

  (3, 4) ⇒ (4, 3)

  (2, -4) ⇒ (-4, 2)

  (-5, 6) ⇒ (6, -5)

8 0
3 years ago
What is .00762 as a multiple of a power of 10​
lys-0071 [83]

Step-by-step explanation:

0.00762 = 7.62 \times  {10}^{ - 3}  \\

3 0
3 years ago
Find the area of the shape
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4 0
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Read 2 more answers
xand y are light house. y being 20km due east of x and from a ship due south of x the bearing of y was 055°. what is the distanc
leonid [27]

Answer:

I) |xz| ≈ 28.6 km

II) |yz| ≈ 34.8 km

Step-by-step explanation:

Let's assume that the position of ship due south of x is z (aà pictor representation of the question is attached)

|xy| = 20 km, |xz| = ?, |yz| = ?, θ(y) = 55°

Using Trigonometric ratio - SOHCAHTOA

I) Tan θ = |xz| ÷ |xy| ⇒ Tan 55° = |xz| ÷ 20

|xz| = 20 * Tan 55 = 20 * 1.428

|xz| = 28.56 km

|xz| ≈ <u>28.6 km</u>

<u />

II) Cos θ = |xy| ÷ |yz| ⇒ Cos 55° = 20 ÷ |yz|

|yz| * Cos 55° = 20 ⇒ |yz| = 20 ÷ Cos 55°

|yz| = 20 ÷ 0.574 = 34.84 km

|yz| ≈ <u>34.8 km</u>

4 0
3 years ago
7. A triangle has an area of 20 in². If the height of the
GenaCL600 [577]

Step-by-step explanation:

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baseline × height / 2

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baseline × 5 = 40

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2 years ago
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