3 years ago

Find the product. (r – 8)(r + 3)

Mathematics

1 answer:

Anuta_ua [19.1K]3 years ago

6 0

Answer:

Step-by-step explanation:

if R = 9

9-8=1

9 + 3 = 12

12*1=12

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A bag of flour weighs 4 1/5 kilograms, what would be the weight of 2 1/2 bags?

lord [1]

Answer:

21/2 or 10.5

Step-by-step explanation:

5 0

3 years ago

Write a sine function that has a midline of 5, an amplitude of 4 and a period of 3pi/2

soldi70 [24.7K]

Answer:

Step-by-step explanation:

The standard form for this function is

y = Asin(Bx - C) + D where

A is the amplitude,

B is used to find the period in the formula $period=\frac{2\pi}{B}$ ,

C is used to find the phase shift in the formula $ps=\frac{C}{B}$ ,

and D is the midline which either moves the function up or down from its natural midline of 0.

We have no given phase shift, so there is no C value. The amplitude is easy; we just fill in A as 4. The period is another story:

$\frac{3\pi}{2} =\frac{2\pi}{B}$ and we solve for B by cross multiplying:

3πB = 4π and

$B=\frac{4\pi}{3\pi}$ so

$B = \frac{4}{3}$ so the function is

$y=4sin(\frac{4}{3}x)+5$

8 0

3 years ago

(4.6 x 10^5 cm) + (3.2 x 10^5 cm)

sp2606 [1]

Answer:

780000 cm.

Step-by-step explanation:

4.6× $10^{5}$ cm + 3.2 x

7.8 x $10^{5}$ cm

7.8 x 100000

=780000

4 0

4 years ago

Find the solution to the system 4x−7y=−12 −4x+3y=12

Nataly [62]

Answer:

(x, y) = ( -51/4 , -9)

Step-by-step explanation:

if u want me to show the work lmk

3 0

4 years ago

which of the following options have the same value as 15% of 20? A. 3/20 ⋅ 20 B. 15 ⋅ 20 C. 0.15 ⋅ 20 D. 15/100 ⋅ 20 E. 15 ⋅ 0.0

Dafna11 [192]

Answer:

The answer is A (3/20)

Step-by-step explanation:

15% of 20= 15%×20= 3 (3/20)

4 0

3 years ago