A true/false test consists of 100 questions. A student knows the correct answer to 40 of the questions. She guesses each of the other answers independently based on the toss of a coin.

Answers

Answer 1

Answer:

whats the question

Step-by-step explanation:


Related Questions

Business Math I need help with fraction word problems.

Answers

Answer:

which kind?

Step-by-step explanation:

Jon performs the following calculation. (1) (2. 0) (3. 00) (4. 000). Which value from his calculation most strongly affects the number of significant figures in the answer? 1 2. 0 3. 00 4. 0.

Answers

Answer:

  (a)  1

Step-by-step explanation:

The number of significant digits in the answer will be the minimum of the numbers of significant digits in the factors. Here, the value with only 1 significant digit is (1).

  1 most affects the number of significant digits in the answer

why does math included things we will never use

Answers

Answer:

To make students question their existence

Step-by-step explanation:

Because it just wants to be complicated for us :/

find the slope and y interceptof y=10x -1/3
with steps ( quick )​

Answers

Answer:

slope = 10 , y- intercept = - [tex]\frac{1}{3}[/tex]

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 10x - [tex]\frac{1}{3}[/tex] ← is in slope- intercept form

with slope m = 10 and y- intercept c = - [tex]\frac{1}{3}[/tex]

Equations in the Form y = ax^2
Guided Practice
Consider these equations.

y=2x^2
y=12x^2
y=−3x^2

How does each differ from the simple quadratic equation y = x^2?

In each of these new equations, x^2 has a coefficient. They are all examples of the equation y = ax^2.

Let’s look at how the coefficient 2 affects the graph of the function y = 2x^2.

Type your answer and then click or tap Done.

First, find the values of 2x^2 by completing this chart. The first is done for you.


x x^2 2x^2

−2 4 8

−1 1 Fill in the blank text field 1

Answers

Answer:

2

Step-by-step explanation:

It's 2 because 4^2 is 8 and 1^2 is 2 so that's how I got my answer

Make d the subjest of the formula h=d/3+2

Answers

Answer:

d = h x 3+2

Example

The formula h=d/3+2

h = 15

d = h x 3+2

d = 15 x 3+2

d = 15 x 5

d = 75

To check the answer is correct

h = 75/5

h = 15

Help please i beg you helppp

Answers

Answer:

4.79 + 23.6

Try this, let me know if I'm wrong.

What is the center of the circle
2x^{2} +2y^{2}-4x+16y=128
A. (1, -2)
B. (1, 4)
C. (1, -4)
D. (-1, -2)
E. (-1, -4

Answers

Answer:

C

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k)are the coordinates of the centre and r is the radius

Given

2x² + 2y² - 4x + 16y = 128 ( divide through by 2 )

x² + y² - 2x + 8y = 64 ( collect x and y terms together )

x² - 2x + y² + 8y = 64

Using the method of completing the square

add ( half the coefficient of the x/ y terms )² to both sides

x² + 2(- 1)x + 1 + y² + 2(4)y + 16 = 64 + 1 + 16

(x - 1)² + (y + 4)² = 81 ← in standard form

with centre = (h, k ) = (1, - 4 ) → C

-7x+6y=34 7x+4y=-24 helppp

Answers

Answer:

x=–4, y=1

Step-by-step explanation:

adding the 2 equations, we see the X's go away and we are left with: 10y=10. we can simplify and solve for y by dividing both sides by 10 and we are left with y=1

plugging 'y=1' into the fist equation we get: -7x+6=34. we can now solve for x by subtracting 6 from both sides and dividing both side by –7, so we are left with: x=–4

we can check by plugging both x and y into one of the original equations:

-7(-4)+6(1)=34

28+6=34

34=34✓

find two positive numbers A and B with A less than or equal to B whose sum is 52 and whose product is mazimized

Answers

Answer:

26 and 26

Step-by-step explanation:

Let's call the two numbers x and 52-x.

Their product is [tex]p(x) = x(52-x)=52x-x^2[/tex]. Now, if you know calculus, you take it's derivative, see where it goes to 0, and determine what kind of critical point is that. Or - especially if you don't know what a derivative is - you stare at it long enough, and realize that that's the equation of a parabola. pointing downward. It means it has a maximum at its vertex, and the vertex has its first coordinate in the point [tex]x_v= -\frac{b}{2a} = -\frac{52}{2)(-1)} = 26[/tex] The two numbers are, then 26 and 52-26=26.

A plane is flying at an altitude of 6 km directly over the line AB. It spots two boats, A and B, on the sea.
If the angles of depression of A and B from the plane are 60° and 30° respectively, calculate the
horizontal distance between A and B.
B
6 km
6km

Answers

Step-by-step explanation:

altitude here is represent by height ok in this case...

if u look at the diagram that i draw ok from the question we shoul know that we need to use tan... tan is opposite over adjacent...

and the information from the question just sun it into the tan formula...this is trigo...

then u add the value to get the total distance..

the answer is 13.87km

hope u understand...

Which expression is equivalent to 1/2b -15

Answers

Answer:

b-30

Step-by-step explanation:

1/2b-30×2=b-30

hope this helpd

If f(x)=6, what is x?

Answers

Answer:so: 6=6/5-x^3

6=6(5-x^3)

6=30-6x^3

-6x^3=6-30

-6x^3=-24

-6x^3+24=0

6x^3-24=0

6(x^3-4)=0

x^3-4=0

x^3=4

x=cube root 4

x=1.5874

Step-by-step explanation:

solve pls brainliest

Answers

Answer:

5/2

Step-by-step explanation:

please mark me brainiest

1/10 = 10%

a percent is

[tex] \frac{part}{whole} = \frac{x}{100} [/tex]

If u take 1/10, 10 is one tenth of 100 (10*10=100).

Answer this question

Answers

y is 5% more than 110:

y = 110 x 1.05 = 115.50

x = 5% less than y:

x = 0.95(115.50)

x = 109.725

#16 i
MODELING REAL LIFE A public university charged $9200 for tuition and fees in the 2014-2015 academic year. This cost
increased at a constant rate and reached $10,900 in the 2019-2020 academic year. Estimate the cost of tuition and fees in the
2023-2024 academic year.

Answers

The tuition is an illustration of a linear function.

The cost of tuition and fees in the academic year 2023-2024, is $12260

Let the number of academic years after 2014-2015 academic year be x.

So, we have:

[tex]\mathbf{(x,y) \to (0,9200)(5,10900)}[/tex]

A linear function is represented as:

[tex]\mathbf{y = mx + b}[/tex]

Where m represents the slope (i.e. constant rate), and b represents the y-intercept (i.e. the value of y when x = 0)

So, we have:

[tex]\mathbf{10900 = 5m + 9200}[/tex]

Subtract 9200 from both sides

[tex]\mathbf{1700 = 5m}[/tex]

Divide both sides by 5

[tex]\mathbf{340 = m}[/tex]

So, we have:

[tex]\mathbf{m =340 }[/tex]

The function becomes

[tex]\mathbf{y = mx + b}[/tex]

[tex]\mathbf{y = 340x + 9200}[/tex]

In the academic year 2023-2024, x = 9.

So, we have:

[tex]\mathbf{y = 340x + 9200}[/tex]

[tex]\mathbf{y = 340 \times 9 + 9200}[/tex]

[tex]\mathbf{y = 3060 + 9200}[/tex]

[tex]\mathbf{y = 12260}[/tex]

Hence, the cost of tuition and fees is $12260

Read more about linear functions a:

https://brainly.com/question/21107621

Find the value of f(-3)f(−3).

Answers

f(-3) means when x = -3
Find the value on the graph

Solution: f(-3) = 6

A truck that can carry no more than 7600 lb is being used to transport refrigerators and upright pianos. Each refrigerator weighs 300 lb and each piano weighs 525 lb. Write and graph an inequality to show how many refrigerators and how many pianos the truck could carry. Will 13 refrigerators and 7 pianos overload the​ truck? Explain.

Answers

Answer:

  13 refrigerators and 7 pianos will NOT overload the truck

Step-by-step explanation:

For x refrigerators, their total weight is 300x.

For y pianos, their total weight is 525y.

The total weight of both of these together must not exceed 7600, so the inequality is ...

  300x +525y ≤ 7600

__

The point (x, y) = (13, 7) lies in the solution area. The truck will not be overloaded.

__

Check

  300(13) +525(7) = 7575 . . . this is less than 7600

Answer:

Step-by-step explanation:

Represent the number of refrigerators by r and that of pianos by p.

Then the total weight in the truck bed is calculated and we determine whether or not this total is less than the truck capacity.

Find the total weight of the load consisting of 13 refrigerators and 7 pianos.   The inequality given above becomes:

w(r, p) = (300 lb)r + (525 lb)p ≤ 7600 lb

w(13, 7) = (300 lb)13 + (525 lb)7 ≤ 7600 lb becomes:

w(13, 7) = 3900 lb + 3675 lb = 7575 lb

Since 7575 lb is just under the truck's capacity (7600 lb), the truck will not be overloaded.

Given: y || z
Prove: mZ5+ m2 2 + m26 = 180°
Angles Lines Statements Reasons
21
23
25
26
m21
m23
m25
m26
L
A
M
1
2
3
y
Statements
Reasons
4
5
6
7
z
Assemble the proof by dragging tiles to
the Statements and Reasons columns
Intro
D

Answers

Using the above statements and reasons can be used to prove the triangle sum theorem, which is: ∠5 + ∠2 + ∠6 = 180°

What is the Triangle Sum Theorem?

The triangle sum theorem states that, when we add the all three interior angles of a triangle together, it will give us a sum of 180°.

Given that y || z:

∠1 ≅ ∠5 and ∠3 ≅ ∠6 based on the interior angles theorem. This implies that:

∠1 = ∠5 and ∠3 = ∠6 (Eqn. 1)

m∠LAM = 180° (def. of straight line angle)

Thus, using the angles addition theorem, we have:

∠1 + ∠2 + ∠3 = m∠LAM

∠1 + ∠2 + ∠3 = 180° (eqn. 2).

Using eqn. 1 and eqn. 2, substitute ∠1 = ∠5 and ∠3 = ∠6 into eqn. 2.

∠5 + ∠2 + ∠6 = 180° (substitution).

Therefore, using the above statements and reasons can be used to prove the triangle sum theorem, which is: ∠5 + ∠2 + ∠6 = 180°

Learn more about triangle sum theorem on:

https://brainly.com/question/7696843

The proof for the triangle sum theorem, which is: ∠5 + ∠2 + ∠6 = 180°

What is Angle Sum Property?

According to the triangle sum theorem, if we total up a triangle's three internal angles, we receive a value of 180°.

We have, y || z.

So, ∠1 ≅ ∠5 and ∠3 ≅ ∠6  (Alternate Interior Angle)

Using Linear Pair

∠1 + ∠2 + ∠3 = m ∠LAM

∠1 + ∠2 + ∠3 = 180°

Now, substitute ∠1 = ∠5 and ∠3 = ∠6 in above equation

∠5 + ∠2 + ∠6 = 180° .

Thus, using the above statements can be used to prove the triangle sum theorem, which is: ∠5 + ∠2 + ∠6 = 180°

Learn more about Angle Sum Property here:

brainly.com/question/7696843

#SPJ5

100 POINTS ANSWER QUICK

A sphere has a diameter of 9 inches.

What is the volume of the sphere rounded to the nearest tenth?

Use 3.14 for pi.


95.4 in³

381.5 in³

763.0 in²

3052.1 in³

Answers

Radius=r=9/2=4.5in

Now

Volume=

4/3πr³4/3π(4.5)³121.5π381.5in³

Option B

Which expression is equivalent? Thank you:)

Answers

Answer:

A

Step-by-step explanation:

because this is right

A - Did this test and had gotten it correct

i need help what is 7h+1−h+4?

Answers

Answer:

6h+5

Step-by-step explanation:

7h-h=6h

1+4=5

Hope this helps :)

Answer:

6h + 5 is the correct answer

Step-by-step explanation:

7h + 1 - h + 4

7h + 1 + 4 - h

7h + 5 - h

6h + 5

hope this helped!

mark me brainliest :D

solve for g.

5.1g = 35.7

Answers

Answer:

g=7

Step-by-step explanation:

5.1 times 7 is 35.7

Answer:

Step-by-step explanation:

5.1g = 35.7

g = 35.7 / 5.1

= 7.

A stadium has 10,500 seat and 8 vip boxess The is divied into 12 equalbsections 2 premuin sections and 10 standred sestion A seat at the premiun sections coast $45 per game.A seat at the standrad sections coast $27 peer game.How many seatsb are there in each section

Answers

Answer:

???????????????????????????????

Step-by-step explanation:

April borrows $60 from her grandmother to buy basketball shoes. At the end of the first week, April pays back $5. At the end of each of the following weeks, she pays back $3 more than she did the previous week. The arithmetic sequence 5, 8, 11, 14,. . . Can be used to represent this situation. In this sequence n represents what?.

Answers

Answer: Number of weeks

Step-by-step explanation:

Just did it on Ed

What is the measure of angle n°?

Answers

The measure of angle n is 45 degrees.

This polygon is what we call an octagon, having 8 sides.

So, to find the measures of the exterior angles, we can take 360 degrees divided by 8 angles to arrive at 45 degrees for each exterior angle, known as angle n. :)

A piano teacher has 4 1/2 hours available to teach each night. One lesson will last 3/4 of an hour. How many lessons can the teacher schedule each night?

Answers

Step-by-step explanation:

4 1/2 = 9/2

so, the calculation is simply how often 3/4 fits into 9/2.

and that is done by division :

9/2 / 3/4

and as we know, to divide by a fraction is the same as to multiply with the upside-down fraction.

so,

9/2 / 3/4 = 9/2 × 4/3 = (9×4)/(2×3) = 3×2/1 = 6

so, without any breaks the teacher can schedule 6 lessons each night.

What is 20 dived by 5 +19-6

Answers

Answer:

17

Step-by-step explanation:

20 divided by 5 + 19 - 6

20 divided by 5 = 4

4 + 19 = 23

23 - 6 = 17

can someone please help me please

Answers

It might be B I might not be right

Answer:

Letter b

Step-by-step explanation:

because it is

Enter a digit in each box to complete the addition problem

Answers

Answer:

4.5 + 19.75 = 24.25

Find your missing digits with the equation above

Other Questions
Philadelphia soul sometimes used _____ to back singers, not something typical of black gospel music. How does red cloud refute the reports members of the audience may have read? how do you say the b word is spanish If a product has an inelastic demand, thena. demand shifts to the right for an inferior product. b. the quantity demanded at any price will decrease. c. the demand for substitute products will decrease. d. consumers will move toward a new equilibrium in the quantities of products purchased. e. the marginal utility of normal products will increase. Label each of the components in the equation below. What type of reaction is shown in the equation? Which is the slope of the line that passes through the points (2,10) and (5,8)? Read the passage from The Beginnings of the Maasai.Neiterkob was confused at first. It was one thing for an eruption to send cows flying up into the sky, but it was another problem entirely to get them down to earth again. The wise god knew how to solve the problem. Enkai grew a giant fig tree out on the plains. The tree grew rapidly, and its branches grew so high that they reached up into the heavens. One by one, Enkai sent the cattle walking down branches of the fig tree, all the way down to the roots at the ground. My father and our people accepted the cattle and began to herd them with the sticks that Enkai had given us. Now, the rest of the tribe calls my father the Beginner of the Earth because he mediates between Enkai and our tribe, just as he did when the cattle returned from the sky.What does the passage explain? Pete says the relationship between the amount he weighs and his age are proportional do you agree or disagree? explain how does migration effect cultural landscape? find the area of the shaded region if the appellate court thinks a decision was wrong, it will: what is mean by snooker what is 2893834 x 5968675 can this problem be solved using the unitary method?yes or no.An oven has a maximum temperature of 220c.what will it be in 2 days time Circle singular nouns and underline plural nouns. Make many corrections as needed.The village school has just one room for all eighty students. Which among the following statements is not related to CapgeminiIntelligent Automation Platform (CIAP)?lolylovOCIAP is built with a cloud-first approachThe functionality of the platform can be used and managed from acommand towerere iCapgemini Intelligent Automation Platform is service agnosticshaThe orchestration functionality of the platform is decentralisedO The platform's functional capabilities are enhanced by our fast Track Hub10:2IClick Submit o veriLIL: Self-esteem is linked to many different factors. It is important to remember that the research on self-esteem is __________ rather than __________. Help????????????????? 2. Aof birds is always a beautiful sight.3. They welcomed the chief guest with a__of flowers. Question 8Luc(aller) maigrir cet t quand il fait du sport.OvaO maigrisO allez