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Phoenix [80]
3 years ago
9

G solve the​ equation, and check the solution. R plus 7 equals 9r+7=9 the solution set is startset nothing endset . ​(type an in

teger or a​ fraction.)
Mathematics
1 answer:
xenn [34]3 years ago
7 0
<h3>Given</h3>

... r + 7 = 9

<h3>Find</h3>

... r

<h3>Solution</h3>

Subtract 7 from both sides of the equation.

... r + 7 - 7 = 9 - 7

... r = 2 . . . . . . simplify

Expressed as a solution set, this may look like ...

... r ∈ {2}

_____

You probably had no trouble solving this in 2nd grade when it was shown to you in the form ...

__ + 7 = 9

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A sinusoidal function whose period is 4π, maximum value is 6, and minimum value is -2 has a y intercept of 6. What is the equati
IRINA_888 [86]

Equation of the function: f(x) = 4 sin (x/2) + 6.

<h3>What is sinusoidal function ?</h3>

The term sinusoidal is used to describe a curve, referred to as a sine wave or a sinusoid, that exhibits smooth, periodic oscillation. It is named based on the function y=sin(x).

Given: max value= 6, min value= -2, y-intercept= 6.

As, standard form f(x) = A sin (ωx +φ) + k,

where A is the amplitude, ω is the angular velocity with ω=2πf.

Now,

A = |6- (-2)/2|

A = |6 +2/2| = 8/2

A = 4

Also, ω:

The period of a sinusoidal is T = 1/f

so, f = 1 / T

ω = 2πf

ω = 2π ( 1/T) with T = 4π

ω = 2π (1/(4π) = 2π (2)

ω = 1/2

The y-intercept k = 6

So, equation with values A =4, ω = 1/2, k = 6, φ = 0.

f(x) = A f(x)

f(x) = A sin (ωx +φ) + k

f(x) = 4 sin (x/2) + 6.

Hence, equation of the function f(x) = 4 sin (x/2) + 6.

Learn more about this concept here:

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4 0
2 years ago
please help will give brainlest+30 points Snowy's Snow Cones has a special bubble gum snow cone on sale. The cone is a regular s
natali 33 [55]

Answer:

Hello There!

`~~~~~~~~~~~~~~~~~~~~~

If you subtract the volume of the sphere from the cone, you'll get the volume you can fill with flavored ice. Right?

Volume (sphere) = \frac{4}{3}\pi r^3

Volume(sphere) = \frac{1}{3}\pi r^2 . h

So that means, The volume left to put in flavored ice is :

Volume(sphere) = \frac{1}{3}\pi r^2h - \frac{4}{3}\pi r^2

So putting in the value for radius and height of the cone and radius of the sphere in the 2nd term will do the thing, I think.

.......

Okay, I think they didn't raise the power but wrote the exponent beside the number. It must be c. They wrote 32 so as to say 3^2 and wrote 0.553 to say (0.55)^3

So the answer is (C)

Hope this helped you. Brainliest would be nice!

5 0
3 years ago
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What is it called when a sea bird lands on a channel maker
murzikaleks [220]

Answer:

This question is actually a riddle. The answer to this riddle is, "Buoy meets gull."

Step-by-step explanation:

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3 years ago
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Evan used base-10 blocks to model the product of 3 and 0.51.
Lilit [14]

Base 10 blocks are used to perform arithmetic operations.

To model the product of 3 and 0.51, Evan needs <em>3 copies of 5 tenths and 1 hundredths.</em>

The expression can be represented as:

\mathbf{3 \times 0.51}

Express 0.51 as 0.5 + 0.01

\mathbf{3 \times 0.51 = 3 \times (0.5 + 0.01)}

  • 0.5 means 5 tenths
  • 0.01 means 1 hundredths
  • 3 means that, the above blocks are needed in three places.

Hence, Evan needs <em>3 copies of 5 tenths and 1 hundredths.</em>

<em />

<em />

Read more about base 10 blocks at:

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What is the estimated total of 674, 692, 724, and 739?
bonufazy [111]

Answer:

2800 is a good estimate

Step-by-step explanation:

Rounding to the nearest hundred

674 = 700

692 = 700

724 = 700

739 = 700

700+700+700+700 = 2800

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3 years ago
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