Which of the following expressions have a value of 180 when b = 4?
Select all that apply.
A. 87b−179+957÷87
B. 33b12
C. b2+120
D. 51b−24
E. 11b+187−2,756÷13

Answers

Answer 1

Answer: The answer is A and D

Step-by-step explanation: If you go through all the problems, just replace "b" with "(4)" into a calculator. For A and D, they both equaled 180.


Related Questions

two standard $6$-sided dice are rolled. what is the probability that the sum rolled is a perfect square?

Answers

Two standards $6$-sided dice are rolled. The probability that the sum rolled is a perfect square 7/36.

What is probability?

Likelihood is the part of math concerning mathematical portrayals of how likely an occasion is to happen, or how likely it is that a suggestion is valid. Likelihood is the part of science concerning mathematical depictions of how likely an occasion is to happen, or how likely it is that a recommendation is valid. Likelihood and measurements, the parts of science worried about the regulations administering arbitrary occasions, including the assortment, investigation, understanding, and show of mathematical information. While calculation and variable based math were concentrated on by old Greek mathematicians over long time back, the ideas of likelihood just arose in the seventeenth and eighteenth 100 years.

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The first astronaut on mars tossed a rock straight up.the height h measured in feet after tt seconds is given by function h(t)=-6t²+24t+6

After how many seconds will the rock be 30 ft above the surface of Mars?

After how many seconds will the rock be 10 ft above the surfaces of Mars? (Round to nearest hundredth)


Answers

Answer:

h'(t)= -12

Step-by-step explanation:

h'(t)=d/dt (-6t x 2 + 24 + 6)

h'(t)=d/dt (-12t + 24 + 6)

h'(t)=d/dt (-12t + 30)

h'(t)=d/dt (-12t) + d/dt (30)

h'(t)= -12+0

a) After 2 seconds the rock will be 30 feet above the surface.

b) After 3.83, 0.17 seconds the rock will be 10 feet above the surface.

a) Given that the height = h(t) =30

Plug it in the equation and find t.

[tex]30=-6t^2+24t+6\\6t^2-24t+24=0\\6(t^2-4t+4)=0\\6(t-2)^2=0\\t=2[/tex]

b) Given that the height = h(t) =10

Plug it in the equation and find t.

[tex]10=-6t^2+24t+6\\6t^2-24t+4=0\\2(3t^2-12t+2)=0\\3t^2-12t+2=0[/tex]

Then use the quadratic formula.

[tex]t=\frac{12 \pm \sqrt{(-12)^2-4(3)(2)} }{2(3)}\\ t=\frac{12 \pm \sqrt{120} }{6}\\\\t=3.83, 0.17[/tex]

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can someone please help? i will mark brainliest please explain your answer too, thank you

Answers

i honestly don't know i think it's between b & d, i'm leaning towards d more tho, my bad if i'm wrong lol

Answer: B. ZX is parallel to CA

Step-by-step explanation:

B is the correct answer because ZX and CA form parallel lines which shows they are parallel to each other.

A local fabric store advertises three and one-half yards of fabric for $4.50. If their everyday price per year is $1.15, is it less expensive to buy the fabric while it is on sale?

Answers

Answer:

one spool of thread costs $1.89

Step-by-step explanation:

$8.99x3=$26.97

$32.64-$26.97=$5.76

$5.76 divided by 3=$1.89

What is the solution to the system of equations that is graphed below?

Answers

Answer:

(-4,-3)

Step-by-step explanation:

3x-8=3(x-4)+1 plz plz help me fast is it infinite or no or one solution

Answers

Answer:

no solution

Step-by-step explanation:

solve the equation

3x - 8 = 3(x-4) + 1    

3x - 8 = 3x - 11

3x + 3 = 3x

x + 3 = x

A number x plus 3 cannot equal a number x.        

the given equation has no solutions.

The equation 3x - 8 = 3(x - 4) + 1 is a linear equation. To determine the number of solutions, we can simplify and analyze the equation.

Expanding the right side of the equation, we have 3x - 8 = 3x - 12 + 1.

Simplifying further, we get 3x - 8 = 3x - 11.

By subtracting 3x from both sides, we have -8 = -11.

However, this leads to a contradiction. -8 is not equal to -11.

Since the equation leads to a contradiction, there is no solution to the equation.

In conclusion, the given equation has no solutions.

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All edges of a cube are expanding at a rate of 2 centimeters per second.
(a) How fast is the volume changing when each edge is 2 centimeter(s)?
(b) How fast is the volume changing when each edge is 14 centimeter(s)?​

Answers

Answer:

Part a → dv/dt = 24 cm³/per secondPart b →  dv/dt = 1176 cm³/per second

Step-by-step explanation:

As all edges of a cube are expanding at a rate of 2 centimeters per second.

i.e ds/dt = 2 cm/s

The formula of volume of cube: V = s³

Differentiating the volume:

dv/dt = 3s²

Write ds/dt following derivative of volume

dv/dt = 3s² ds/dt

plug in the value: ds/dt = 2 cm/s

dv/dt = (3s²) (2)

dv/dt = 6s²

Given the edge is 2cm.

so plug in the value: s=2

dv/dt = 6s²

          = 6(2)²=6(4)=24 cm³/per second

SIMILARLY,

When the edge is 14cm

dv/dt = 6s²

plug in the value: s=14

dv/dt = 6s²

         = 6(14)²=6(196)=1176 cm³/per second

Thus,

Part a → dv/dt = 24 cm³/per secondPart b →  dv/dt = 1176 cm³/per second

The volume will be:

(a) 24 cm³

(b) 1176 cm³

Given:

Expanding rate,

2 cm/sec

Let,

The edge of a cube be "x cm".

(a)

When,

x = 2 cm

then,

→ [tex]\frac{dx}{dt} = 2 \ cm/sec[/tex]

Let,

The volume of cube be "V"

→ [tex]V = x^3[/tex]

→ [tex]\frac{dV}{dt} = 3x^2 \frac{dx}{dt}[/tex]

        [tex]= 3\times 2^2\times 2[/tex]

        [tex]= 3\times 4\times 2[/tex]

        [tex]= 24 \ cm^3[/tex]

(b)

When,

x = 14 cm

then,

→ [tex]\frac{dx}{dt} = 2 \ cm/sec[/tex]

Let,

The volume of cube be "V"

→ [tex]V = x^3[/tex]

→ [tex]\frac{dV}{dt} = 3x^2 \frac{dx}{dt}[/tex]

        [tex]=3\times 14^2\times 2[/tex]

        [tex]= 1176 \ cm^3[/tex]

Thus the above answer is correct.

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Please help its 50 points
Reflect on why you think the main character in "The White Umbrella" throws away her hard won prize.

Answers

Answer: The reason why the narrator throw the umbrella down the sewer after the car accident is that the umbrella symbolized the rejection of her mother The narrator feel ashamed about her working mother who cannot afford her the standard of living like she's seen in her friends. in the end, she feel ashamed of this and the umbrella remind her of her shameful thought about her mother

Step-by-step explanation:

Answer:

At first, she was upset. She had seen how Eugenie Roberts’s mother acted to her child and how she had treated them, with kindness and utmost interest. She was jealous because her mother had been working all of the time. After her mother came to pick them up, she told her mother she wanted her to quit her job, she didn't want her to work, she wanted to feel like every kid and have her mother there with her to let her know she loved her. And then she had gotten into an accident, in her anger, her mother tilted her head back and closed her eyes, waiting for the yelling people to approach her car. But she thought her mother was dead, she screamed at her mother to open her eyes, before her mother told her to be quiet because people were already going to yell at her and she couldn't take any more yelling. She threw her umbrella in the sewer. Deciding to never be that angry with her mother, for working again.

I hope this helps! :)

a campaign manager for a political candidate releases a series of advertisements

Answers

Okkkk......what’s the question?

Solve for 8:
-0.2 = 8 +(-0.8)

Answers

s=0.6
Step by step explanation: subtract the greater number by the smaller number. Plug in the decimal after.

what is 14 radical 2 divided by radical 2

Answers

Answer: either 14

Step-by-step explanation:

In the figure shown, what is the measure of angle x?
O1) 100 degrees
O 2) 110 degrees
O3) 120 degrees
O4) 140 degrees

Answers

The answer is C. 120 degrees

Answer:

C.) 120 or Option C is incorrect.

The answer is B.) 110

Step-by-step explanation:

See screenshot below

Hope this helps!

- ❤ 7272033Alt ❤



-3 + 4x = 41
What's x

Answers

Move the -3 to the other side which makes it 41 + 3 = 44

So now the equation looks like 4x=44

Now divide 44 by 4, equals 11

x=11

Answer:

x=11 I hope it helps you

Step-by-step explanation:

In a class, there are 18 girls and 14 boys. If the teacher selects two students at random to attend a party with the principal, what is the probability that the two students are the same sex?

Answers

Answer:

0.492 is the answer

Step-by-step explanation:

The probability that the two students are the same sex is 0.49.

Since the class contain 32 (18+14) children out of which  18 girls and 14 boys.

First step

Using general multiplication rule

P(Two girls)=P(First girls)×P(Second girl; First girl)

P(Two girls)=18/32×17/31

P(Two girls)=18×17/32×31

P(Two girls)=306/992

P(Two boys)=P(First boys)×P(Second boys; First boys)

P(Two girls)=14/32×13/31

P(Two girls)=14×13/32×31

P(Two girls)=182/992

Second step

Use addition rule for mutually exclusive events

P(Same sex)=P(Two girls)×P(Two boys)

P(Same sex)=306/992×182/992

P(Same sex)=306+182/992

P(Same sex)=488/992

P(Same sex)=61/124

P(Same sex)=0.49

Inconclusion the probability that the two students are the same sex is 0.49.

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can anyone help? I’ll give brainlest ❤️

Answers

Answer:

C

Step-by-step explanation:

I inserted 5 for a and c is the correct answer

The length of a bacterial cell is about 3 x 10−6 m, and the length of an amoeba cell is about 4.5 x 10−4 m. How many times smaller is the bacterial cell than the amoeba cell? Write the final answer in scientific notation with the correct number of significant
digits.

2 x 10^2
2 x 10^3
0.7 x 10^1
6.67 x 10^2

Answers

The number of times the bacterial cell is smaller than the amoeba cell is 7 * 10^-1

How many times smaller is the bacterial cell than the amoeba cell?

The given parameters are:

Bacteria cell = 3 x 10^-6 m

Amoeba cell = 4.5 x 10^-4 m

The number of times (n) is calculated as

n = Amoeba cell/Bacteria cell

This gives

n = (3 x 10^-6 m)/(4.5 x 10^-4 m)

This gives

n = 0.7 * 10^-2

Rewrite as

n = 7 * 10^-1

Hence, the number of times the bacterial cell is smaller than the amoeba cell is 7 * 10^-1

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Carrie has a stamp collection she is very proud of. She buys a frame to display her favorite stamps. The frame is 6 inches wide, and a row of 7 stamps fits perfectly across it.

How wide is each stamp?

Answers

The stamps should be .85 inches each

using arc length formula find s when r=24 and θ=π/2

48π
24π
12π

Answers

Answer:

12π

Step-by-step explanation:

The formula for arc length is given as:

[tex] s = \frac{\theta}{360\degree} \times 2\pi r[/tex]

Plug r = 24 and θ=π/2 in the above formula, we fi d:

[tex] s = \frac{\frac{\pi}{2}}{360\degree} \times 2\pi \times 24\\\\

s = \frac{\frac{\pi}{2}}{2 \pi} \times 48\pi\\\\

s = \frac{\pi}{2\times 2 \pi} \times 48\pi \\\\

s = \frac{\pi}{4\pi} \times 48\pi \\\\

\huge \purple {\boxed{s = 12\pi}} \\

[/tex]

Step-by-step explanation:

ghjkkknn. bjkkmn. bhcddfkkkk answer in image

will give brainliest!! please help me!!

Answers

Answer:

D

Step-by-step explanation:

angle 4=x+30 and angle 2=2x+15. Find the measure of angle 4

Answers

9514 1404 393

Answer:

  ∠4 = 45°

Step-by-step explanation:

Angles 1, 2, and 4 are all congruent.

  ∠4 = ∠2

  x +30 = 2x +15

  15 = x . . . . . . . . . . . . . subtract x+15

  x + 30 = 45 = ∠4

Is 5 in the solution of x+3>8?

Answers

Answer: D) No; If x is 5, the expression on the left simplifies to 8, making the inequality false.

In other words, if x = 5, then x+3 becomes 5+3 which ultimately becomes 8, but this is not greater than 8 on the right side.

Your steps could look like this

x+3 > 8

5+3 > 8 ... replace x with 5

8 > 8 ... this is a false inequality

An airplane flying at an altitude of 14,382 feet ascends another
9,372 feet. A little while later, it descends 10,345 feet.
What is the altitude of the airplane after it descends?

Answers

The altitude of the airplane after it descends is 13,409 feet.

What is altitude?

The meaning of ALTITUDE is the vertical elevation of an object above a surface (such as sea level or land) of a planet or natural satellite.

Now it is given that,

Initial Altitude of airplane = 14,382 feet

Then plane ascends = 9,372 feet

So, Altitude of airplane = 14,382 feet + 9,372 feet = 23,754 feet

Again airplane descends = 10,345 feet

So, Altitude of airplane = 23,754 feet - 10,345 feet

Altitude of airplane = 13,409 feet

Thus, the altitude of the airplane after it descends is 13,409 feet.

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HELPPP ITS AN EMERGENCY!!!!!!

Answers

Answer:

The equation in point-slope is [tex]\mathbf{y+5=3(x-6)}[/tex]

Step-by-step explanation:

We need to write the point-slope form of the equation of the line passing through the point (6,-5) and perpendicular to the line [tex]y=-\frac{1}{3}x+4[/tex]

The general form of point-slope is; [tex]y-y_1=m(x-x_1)[/tex]

where m is slope and [tex](x_1,y_1)[/tex] is the point

We need to calculate slope.

We are given equation of line [tex]y=-\frac{1}{3}x+4[/tex] that is perpendicular to the required line.

The equation is given in slope-intercept form [tex]y=mx+b[/tex] where m is slope.

Comparing both equations we get m= -1/3

But we know that when lines are perpendicular their slopes are opposite reciprocal of each other i.e [tex]m=-\frac{1}{m}[/tex]

So, slope of required line is m = 3 (opposite reciprocal of -1/3)

Now, the equation in point-slope form having slope m=3 and point (6,-5) is

[tex]y-y_1=m(x-x_1)\\y-(-5)=3(x-6)\\y+5=3(x-6)[/tex]

So, The equation in point-slope is [tex]\mathbf{y+5=3(x-6)}[/tex]

f(x)=3x-9; horizontal stretch factor of 6

Answers

The Horizontal stretch of the function f(x)=3x-9 by a factor of 6 is g(x)=x/2-9 .

The graph of the function y=f(x/a) represents a Horizontal Stretch by a factor of a of the graph y=f(x)    , where a>0 and a≠1 .

To find the horizontal stretch we divide the input by a ,

In the given question

f(x)=3x-9 , is horizontally stretch by a factor of 6.

So we divide the inputs by 6 .

On dividing the inputs by 6 , we get

f(x/6)=3(x*1/6)-9        (...as 3/6=1/2)

Let g(x) represents the horizontal stretch of f(x) by factor 6 , So

g(x)=x/2-9

Therefore , the Horizontal stretch of the function f(x)=3x-9 by a factor of 6 is g(x)=x/2-9 .

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The solution to the system is

( , )

Answers

Answer:

x = ½

y = 3

Step-by-step explanation:

—Math

0,8 –4x = –0,4y ==> –4x + 0,4y = –0,8

6x + 0,4y = 4,2 ==> 6x + 0,4y = 4,2

______________–

–10x = –5,0

x = –5/–10

x = 1/2

–4x + 0,4y = –0,8

–4(½) + 0,4y = –0,8

–2 + 0,4y = –0,8

0,4y = –0,8 + 2

y = 1,2/0,4

y = 3

x = ½

y = 3

Follow my account^^

Convert the following equation
into slope-intercept form.
8x - 2y = -14

Answers

y= 4x+7

EXPLANATION:
y intercept form is y=mxtb
where m is the slope and b is the intercept
to find the slope intercept form move everything to one side and place it into the y=mx+b form

please helpppp!!!!!!!

Answers

In an integer it would be 5, I don’t know for fraction.
ANSWER: x = 50.

EXPLANATION: 15 is equivalent to x as 3 is equivalent to 10. 10 divided by 3 = 3.33. We would multiply 15 by 3.33 to find what x would be. 15 x 3.33 = 50.

I'm stuck on 2 choices? Can I have help? ​

Answers

Answer:

it has to be whole numbers

Step-by-step explanation:

because all of them are whole number no matter if there negative or positive

PLEASE HELP 100 points ASAP!

Question & Answer choices attached!

Answers

Answer:

C. Graph B

Step-by-step explanation:

y ≥ 2x + 3

y ≤ -2x - 4

To find which side of the line the answer is, we can set y and x to 0 and see if the equation is true or false (this only works if the cordance of (0,0) does not lie on the line)

0 ≥ 2(0) + 3

0 ≥ 3 FALSE (the side of the line that should be shaded is the one that does not include the cordance of (0,0))

0 ≤ -2(0) - 4

0 ≤ - 4 FALSE (the side of the line that should be shaded is the one that does not include the cordance of (0,0))

solve this please. ​

Answers

Answer:

94

Step-by-step explanation:

Answer:

T<5,-2>

Step-by-step explanation:

It goes to the the right 5 and down 2 but it is put in a proper format

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