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NARA [144]
3 years ago
5

3÷5(6×7) - 4Plz I need help​

Mathematics
2 answers:
myrzilka [38]3 years ago
8 0

Answer:

- 3 and 69/70

Step-by-step explanation:

3 ÷ 5(6 × 7) - 4

3 ÷ 5(40) - 4

3 ÷ 210 - 4

1/70 ÷ 4

- 3 and 69/70

ivolga24 [154]3 years ago
4 0

Answer:

21.2

Step-by-step explanation:

3/5(42)-4

0.6(42)-4

25.20-4

21.2

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40 POINTS!!!! Which sequence of transformations will result in an image that maps onto itself?
White raven [17]

Answer:

Option C.

Step-by-step explanation:

Let a point (x, y) has a sequence of transformations,

Option A).

Reflects across x-axis then the coordinates will be,

(x, y) → (x, -y)

Then reflects across the y-axis,

(x, -y) → (-x, -y)

Image (x, y) gets changed to (-x, -y) therefore, point (x, y) doesn't map onto itself.

Option B).

(x, y) rotate 90° counter clockwise about the origin.

(x, y) → (-y, x)

Then reflect across x-axis,

(-y, x) → (y, x)

Since coordinates of the image and the actual are not same therefore, image doesn't map itself.

Option C).

(x, y) when reflected across x-axis,

(x, y) → (x, -y)

Then reflected over the x-axis,

(x, -y) → (x, y)

In this option point (x, y) maps onto itself after these transformations.

Option D).

(x, y) rotated 90°counterclockwise about the origin

(x, y) → (-y, x)

Then translated up by 2 units.

(-y, x) → (-y, x+2)

Therefore, (x, y) gets changed after these transformations and doesn't maps itself.

Option (C) will be the answer.

7 0
3 years ago
What is the length of the diagonal of the triangle?
Setler79 [48]

Answer:

21.25

Step-by-step explanation:

use the Pythagorean theorem, it is given that the shape is a rectangle so all opposite sides are congruent and all angles are right, since we know that the diagonal forms a right triangle we can use the pythagorean theorem

the Pythagorean theorm is a^2+b^2=c^2 where a and b are the legs (in this case the side of the triangle) and c is the hypotenuse which is the longest side in a right triangle

17^2+12.75^2=x^2

x^2=7225/16

now take the square root of both sides and you get -21.25 and 21.25

distance CAN NOT be negative so -21.25 isn't an option

7 0
3 years ago
How do you determine two angles which are coterminal to the given angles ?
Julli [10]

Answer:

Coterminal Angles are angles who share the same initial side and terminal sides. Finding coterminal angles is as simple as adding or subtracting 360° or 2π to each angle, depending on whether the given angle is in degrees or radians. There are an infinite number of coterminal angles that can be found.

Step-by-step explanation:

i hope this helped you :)

7 0
2 years ago
Can you cut a pizza into eleven pieces using exactly four straight cuts?
Anastaziya [24]
I hope this helps :)

6 0
3 years ago
88 pointtttsss for the right answerr
Basile [38]

\frac{4 ^{9} }{4 ^{3} }
9-3= 6

drag down the 4

ANSWER should be 4^6
3 0
3 years ago
Read 2 more answers
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