help plz . i need to get these study questions right

Answer:

x = 0.4

Step-by-step explanation:

Answer:

x=0.4

Step-by-step explanation:

Given function:

Combine first value by 0.81:

Subtract 0.81 both from sides:

Simplifly -19x/2:

Multiply all terms by similar term:

Divide both terms by -7.6:

Therefore, x=0.4.

Answer:

2sqrt(3),-2sqrt(3)

Step-by-step explanation:

12-x^2=0

-x^2=-12

x^2=12

x=-sqrt(12),sqrt(12)

x=2sqrt(3),-2sqrt(3)

Answer:

130.25 ft.

Step-by-step explanation:

The semi circle has a length 1/2 of the circumference of the circle with a diameter of 25

C = πd = 3.14(25)

So, the semi circle has a length = 1/2(3.14)25) = 39.25

The distance for the rectangle = 33 + 25 + 33 = 91

Therefore, the total perimeter = 91 + 39.25 = 130.25

Answer:

Step-by-step explanation:

area = (5x-3)² = (25x² - 30x + 9) cm²

Answer:

They are complete opposites

Step-by-step explanation:

Answer:

they are opposites

Step-by-step explanation:

Answer:

ok so I couldn't find what the answer was and there didn't seem to be a virus. Soooo I dunno what that link is. The account that posted it was a bot if you click on the profile it says it deactivated.

Answer:

Step-by-step explanation:

25% of a hundred is one-fourth and because there are six students in a fourth of the whole we are multiplying four and six. 6x 4 is 24.

The percentage is calculated by dividing the required value by the total

value and multiplying by 100.

Required percentage value = a

total value = b

Percentage = a/b x 100

25% = 6 students

100% = 24 students

The total number of students in Mr. Foster's class is 24.

The percentage is calculated by dividing the required value by the total

value and multiplying by 100.

Required percentage value = a

total value = b

Percentage = a/b x 100

Example:

50% = 50/100 = 1/2

25% = 25/100 = 1/4

20% = 20/100 = 1/5

10% = 10/100 = 1/10

We have,

Number of students who chose an amber background = 6

25% of Mr. Foster's class chose an amber background for their school picture.

This means,

25% = 6

The total number of students = 100%

Now,

25% = 6 students

Multiply 4 on both sides.

4 x 25% = 4 x 6 students

100% = 24 students

Thus,

The total number of students in Mr. Foster's class is 24.

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Answer:

6-

Step-by-step explanation:

Your answer should be written in paragraph/essay format.

Any sources used should be cited at the bottom of your paper.

All answers should show you have learned something from Unit 9.  Material from other units will not be graded for this assignment.

If you are stuck, you can think about the following topics: textile mills, interchangeable parts, the Lowell System, unions, labor reform, steamboats, railroads, coal, the telegraph, and/or new inventions.

Answer:

Base:12

Volume:76.8

Step-by-step explanation:

The base is 3*8/2

which is 12

and the volume is base * height so

12*6.4

=76.8

Hope this helps :) Giving me brainiest would help a lot :))

Answer:

10

Step-by-step explanation:

5x5=10

Answer:

10 units

Step-by-step explanation:

5*2=10

Answer: A = 1/2 b x h

Step-by-step explanation:

Answer

here :)

Step-by-step explanation:

for 1) the answers are...

x       y

-6     -10

3      -1

-7     -11

0       -4  

-3     -7

for number 2 the answers are...

x    y

6   -2

1    -7

-8  -16

-7  -15

2   -6

for number 5 the answers are...

x    y

1    -6

2    -5

-6   -13

6    -1

-9   -16

for number 6 the answers are...

x   y

8   64

7   56

6   48

9   72

-8   -64

for number 9 the answers are...

x   y

2   -3

-9  -14

8   3

-5  -10

9    4

for number 10 the answers are...

x   y

5   -15

-9   27

7    -21

0    0

-3   9

Answer:

B. x = 4 and x = -10

Step-by-step explanation:

First, expand the equation

(x + 3)² = 49

(x + 3)(x + 3) = 49

x² + 6x + 9 = 49

Subtract 49 from both sides

x² + 6x -40 = 0

Factor

(x + 10)(x - 4) = 0

Solve

x + 10 = 0

x = -10

x - 4 = 0

x = 4

So, the correct answer is B. x = 4 and x = -10

Answer:

It is -16

Step-by-step explanation:

Have a great Day

Answer:

m = -10

Step-by-step explanation:

m = y2 - y1 / x2 - x1

m = 60-50 / -2 - -1

m = 10/ -1

m = -10

Answer:

-10

Step-by-step explanation:

We can use two points from the table to find our slope.

Remember, the slope formula is [tex]\frac{y2-y1}{x2-x1}[/tex]. We can use the points (-1,50) and (-2,60). Let's substitute the values into the formula.

[tex]\frac{60-50}{-2-(-1)}[/tex]. This gets us to [tex]\frac{10}{-1}[/tex], so our slope is -10.

Hope this helps!

Answer:

43°

Step-by-step explanation:

p + 7° + 3p+ 1° = 180° ( Being linear pair)

4p + 8° = 180°

4p = 180° - 8 °

4p = 172°

p = 172° / 4

p = 43°

Hope it will help :)❤

Carbon-14 will take 19,035 years to decay to 10 per cent.

A radioactive half-life refers to the amount of time it takes for half of the original isotope to decay.

An exponential decay can be described by the following formula:

[tex]N(t)=N_oe^{-\lambda t}[/tex]

Where:

No  = The quantity of the substance that will decay.

N(t) = The quantity that still remains and has not yet decayed after a time t

[tex]\lambda[/tex]    = The decay constant.

One important parameter related to radioactive decay is the half-life:

[tex]t_{1/2}=\dfrac{Ln(2)}{\lambda}[/tex]

If we know the value of the half-life, we can calculate the decay constant:

[tex]\lambda =\dfrac{ln(2)}{t_{1/2}}[/tex]

Carbon-14 has a half-life of 5,730 years, thus:

[tex]\lambda =\dfrac{ln(2)}{5730}[/tex]

[tex]\lambda[/tex] = 0.00012097

The equation of the remaining quantity of Carbon-14 is:

[tex]N(t)=N_oe^{-0.00012097t}[/tex]

We need to calculate the time required for the original amount to reach 10%, thus N(t)=0.10No

[tex]0.10N_o=-N_oe^{-0.00012097t}[/tex]

Simplifying:

[tex]0.10=e^{0.00012097t}[/tex]

Taking logarithms:

ln(0.10) = -0.00012097t

Solving for t:

[tex]t=\dfrac{Log0.10}{-0.00012097}[/tex]

t = 19035 years

Carbon-14 will take 19,035 years to decay to 10 per cent.

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Answer:

340 liters

Step-by-step explanation:

This means that Tapiwah raked x plus 5% of x leaves. Knowing that Tapiwah actually raked 357 liters, we can find the value of x as follows. So, Adam raked 340 liters of leaves.

First answer is 6+x

2. A.37419

  B. 7

Answer:

its side CE

Step-by-step explanation:

I got it wrong and it showed me the answer. Hope this helps!

Answer:

C

Step-by-step explanation:

got it right

Answer:

-6 , 6, 11

Step-by-step explanation:

Set each part of the equation to zero, so that x-11= 0, and x^2 - 36 = 0. Solve each part, and you get -6, 6, and 11.

Hopefully this helps- let me know if you have any questions!

Answer:

It will equal one:)))))))))

Answer:

BC > AD

Step-by-step explanation:

The opposite side to BC is greater, therefore making m<BCD > m<BAD. Since the legs are congruent, this is the only difference that need-be mentioned.

As the opposite angle of a larger side of a triangle is larger hence

m∠BAD > ∠mBCD.

We know two similar planer figures are congruent when we have sides or angles or both that are the same as the corresponding sides or angles or both.

From the figure itself, ΔABD and ΔBCD share a common side BD.

Given, Side AB is congruent to side CD and Side AD is greater than side BC.

We know opposite angle of a larger side of the triangle is larger.

Therefore, m∠BAD > ∠mBCD.

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Answer: the percentage you would get the number two would be 10% out of 100 I believe. Hope it helped!

Answer:

Step-by-step explanation:

Don't use 0 (or any other number) to replace θ. Use a letter variable such as x.

tan(x) = 7/24

sin(x)/cos(x) = 7/24

sin(x) = 7/√(7²+24²) = 7/√625 = 7/25

Answer:

B and C are correct

Step-by-step explanation:

Answer:

Step-by-step explanation:

x = 40

x = 120

The < sign means less than.

38 is less than 25, but it is less than 40 and 120.

Hope that helps!

-Sabrina

Answer:

y = 6

Step-by-step explanation:

This is a special right triangle with angle measures 90° 60° 30°

the side length that sees angle measure 30 is represented with x

the side length that sees angle measure 90 is represented with 2x

and the side length that sees angle measure 60 is represented with x√3

the side length that sees angle measure 90 is given as 4√3 which means 2x = 4√3 divide both sides by 2

x = 2√3 now to find y, we need to multiply this value by √3

2√3 × √3 = 2 × 3

Answer:

30 days

Step-by-step explanation:

Answer:

p-3 is the correct answer

Answer:

p - 3

Step-by-step explanation:

let x = number of pretzels terry ate and p = the amount of pretzels susan ate

If Terry ate 3 less than Susan than

x would equal p - 3

so your answer would be p - 3