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3 years ago

WILL GIVE BRAINEST FOR THE FIRST PERSON TO ANSWER THAT IS CORRECT WITH A FULL EXPLANATION AS TO WHY YOU GOT THAT ANSWER! THANKS

Mathematics

2 answers:

Sladkaya [172]3 years ago

5 0

Answer: it would be a rectangle

Kryger [21]3 years ago

4 0

Answer:

it would be a rectangle

Step-by-step explanation:

it would be a rectangle because when you cut it in the cross section there will be four parell sides, so therefore it would have to make a rectangle because the side lengths would not be even.

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A circle with radius of 5 is dilated by a scale factor of 2. What is the area of the image?

Tanya [424]

Answer: 100pi

Step-by-step explanation:

7 0

3 years ago

Richard simplified an expression in three steps, as shown:

soldi70 [24.7K]

Answer:

Step 2 because Richard multiply the powers of same base in denominator instead adding powers of same base.

Step-by-step explanation:

We are given that Richard simplified an expression in threes steps

We have to find the incorrect step in simplification of Richard

Step 1: all the exponent are multiplied by 3

$\frac{x^{-4}y^2}{yx^2\cdot x^2y^{-4}}^{3}=\frac{x^{-12}y^6}{y^3x^6\cdot x^6y^{-12}}$

Step 2:The exponents in the denominator are multiplied

$\frac{x^{-12}y^6}{y^3x^6\cdot x^6 y^{-12}}=\frac{x^{-12}y^6}{x^{12}y^{-9}}$

Step 3:The exponents of the same base are subtracted during division

$\frac{x^{-12}y^6}{x^{12}y^{-9}}=x^{-12-12}y^{6+9}$

$=x^{-24}y^{15}$

Richard makes mistake in step 2 when we multiply then power of same base should be added but Richard multiply the powers of same base in denominator.

4 0

4 years ago

The function intersects its midline at (-1.25,-3) and a maximum point at (0,4) Find a formula for f(x) Give an exact expression.

stellarik [79]

Answer: y = 7cos(0.4π x) - 3

Step-by-step explanation:

The equation of a cosine function is: y = A cos(Bx - C) + D where

Amplitude (A) is the distance from the midline to the max (or min)
Period (P) is the length of one cosine wave --> P = 2π/B
Phase Shift (C/B) is the horizontal distance shifted from the y-axis
Midline (D) is the vertical shift. It is equal distance from the max and min

Midline (D) = -3

(-1.25, -3) is given as a point on the midline. We only need the y-value.

Horizontal stretch (B) = 0.4π

The max is located at (0,4) and also at (5, 4). Thus the period (length of one wave) is 5 units.

$P=\dfrac{2\pi}{B}\qquad \rightarrow \qquad 5=\dfrac{2\pi}{B}\qquad \rightarrow \qquad B=\dfrac{2}{5}\pi$ → B = 0.4π

Phase Shift (C) = 0

The max is on the y-axis so there is no horizontal shift.

Amplitude (A) = 7

The distance from the midline to the max is: A = 4 - (-3) = 7

Equation

Input A = 7, B = 0.4π, C = 0, and D = -3 into the cosine equation.

y = A cos(Bx - C) + D

y = 7cos(0.4π x - 0) - 3

y = 7cos(0.4π x) - 3

3 0

3 years ago

If the scale factor from shape A to B is 5. What is the scale factor from shape B to A?

OLga [1]

Answer:

1/5

Step-by-step explanation:

You need the opposite of 5/1 which would be 1/5

6 0

2 years ago

What is the range of y equals log 8 x

azamat

Answer:

(-∞, ∞)

Step-by-step explanation:

The range of any log function is all real numbers.

4 0

3 years ago