Answer:

$340

Step-by-step explanation:

Given data

Inititial fee= $100

cost per minute= $1

Let the total charge for x minutes by y

Hence the expression for the total charges after x minutes is

y= 100+1x

y=100+x

But an after is from 12pm - 4pm= 4 hours

x=4*60

x=240minutes

y=100+240

y=$340

What is the solution to this system of equations? 4x + 5y = 7

3x – 2y =-12

The solution is

(-2, 3)

(3.-1)

(18. -9)

(13,-9)

**Answer:**

(-2, 3)

**Step-by-step explanation:**

4x + 5y = 7

3x - 2y = -12

Let's solve this by elimination. We want to eliminate one variable at a time. This means we need to multiply the equations to create a common multiple to cancel out a variable.

Let's work with y.

5y and -2y: For these values to cancel out, we need to multiply each term to create a common multiple.

2(4x + 5y = 7)

5(3x - 2y = -12)

Multiply.

8x + 10y = 14

15x - 10y = -60

Eliminate.

23x = -46

Divide both sides by 23.

x = -2

Now that we know x, let's plug it back into one of equations to find y.

4x + 5y = 7

4(-2) + 5y = 7

Multiply.

-8 + 5y = 7

Add.

5y = 15

Divide.

y = 3

Now we know x and y; let's plug both back into the equation we have not checked yet.

3x - 2y = -12

3(-2) - 2(3) = -12

Multiply.

-6 - 6 = -12

Subtract.

-12 = -12

Your solution is correct.

(-2, 3)

Hope this helps!

The distance from Point C to the tower at Point A is 1.2 miles, while the distance from Point C to the tower at Point

Bis 1.8 miles. If mZACB=81", what is the distance, to the nearest tenth of a mile, between the water towers?

Since we are given with the three sides of the triangle and asked to determine the angle, we can use the cosine law.

Of the population of all fruit flies we wish to give a 90% confidence interval for the fraction which possess a gene which gives immunity to fungal infections. To this end we have obtained a random sample of 400 fruit flies. We find that 280 of the flies in the sample possess the gene. Give the margin of error for the 90% confidence interval. Round your answer to 3 decimal

**Answer:**

The margin of error for the 90% confidence interval is of 0.038.

**Step-by-step explanation:**

In a sample with a number n of people surveyed with a probability of a success of [tex]\pi[/tex], and a confidence level of [tex]1-\alpha[/tex], we have the following** confidence interval of proportions.**

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

**In which**

z is the zscore that has a pvalue of [tex]1 - \frac{\alpha}{2}[/tex].

**The margin of error is:**

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

**To this end we have obtained a random sample of 400 fruit flies. We find that 280 of the flies in the sample possess the gene.**

This means that [tex]n = 400, \pi = \frac{280}{400} = 0.7[/tex]

**90% confidence level**

So [tex]\alpha = 0.1[/tex], z is the value of Z that has a pvalue of [tex]1 - \frac{0.1}{2} = 0.95[/tex], so [tex]Z = 1.645[/tex].

**Give the margin of error for the 90% confidence interval.**

[tex]M = z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

[tex]M = 1.645\sqrt{\frac{0.7*0.3}{400}}[/tex]

[tex]M = 0.038[/tex]

The margin of error for the 90% confidence interval is of 0.038.

Tara had 1 5/8 pounds of dried nuts. She ate 1/4 pound of dried nuts each day for 6 days? How many pounds of dried nuts did Tara have left after 6 days?

**Answer:**

1/8

**Step-by-step explanation:**

its easy just count backwards by 2/8 each time

Find the x and y intercept of this equation: -2x + 8y =4 write your solutions as a point in the form (x,y)

**Answer:**

8y=4

**Step-by-step explanation:**

This is hard please help

**Answer:**

SA = 208 in²

**Step-by-step explanation:**

SA = 2(2)(7) + 2(2)(10) + 2(10)(7) = 208 in²

**Answer:**

208 in^2

**Step-by-step explanation:**

SA: 2(w · l + h · l + h · w) formula

SA: 2(2 · 7 + 10 · 7 + 10 · 2) plug the numbers in- w: width, l: length, h: height

SA: 2(14 + 70 + 20) find area of 3 sides with different areas

SA: 28 + 140 + 40 doubling

SA: 208 final answer

Which of the following equations represents a linear function￼

**Answer:**

its B

**Step-by-step explanation:**

please like my answer . brainliest please

ZABD and ZDBC are supplementary angles.

What is the measure of x?

x = [?]°

7D

AK

126

x

B

-С

Angles are not drawn to scale.

Enter

**x=102°****Answer:**

x+78=180 supplementary angle

x=180-78=102

Alex has trained his puppy, Popper, to

jump through a ring. According to Alex's

measurements and calculations, the ring

has a diameter of 3.5 feet. What is the

ring's circumference (use 3.14 for pi)?

1. 8.75 ft

2. 11.32 ft

3. 12.25 ft

4. 10.99 ft

Answer:

4.10.99

Step-by-step explanation:

3.14 * 3.5

Line u has a slope of Line v is parallel to line u. What is the slope of line v? v יל Simplify your answer and write it as a proper fraction, improper fraction, or integer.

**Answer:**

I have no idea what the answer is because I am in 6th grade but good luck

**Step-by-step explanation:**

I don't know

A factory begun producing new parts. Data were collected on the

number of defective parts per 10,000 parts produced. The graph

shown displays some of the data for the first 10 weeks of production.

Write an equation that best models the data?

The **equation **that best models the data is** 10x + y = 160** if the number of defective parts per 10,000 parts produced and points (10, 60) and (9, 70)

It is defined as the **relation **between two variables if we plot the graph of the linear equation we will get a **straight line**.

If in the linear **equation one variable **is present then the equation is known as the **linear equation **in **one** **variable**.

From the graph:

**(10, 60) and (9, 70)**

**The line equation of best fit:**

(y - 70) = (70-60)/(9-10)(x-9)

y - 70 = -10(x-9)

y - 70 = -10x + 90

**10x + y = 160**

Thus, the **equation **that best models the data is** 10x + y = 160** if the number of defective parts per 10,000 parts produced and points (10, 60) and (9, 70)

Learn more about the **linear equation **here:

brainly.com/question/11897796

#SPJ2

Is this correct? Or are the numbers wrong

**Answer:**

I think that's right. But the angle in the corner actually might be the 28 degrees. One sec this question is a little confusing

**Step-by-step explanation:**

In a class of students, the following data table summarizes how many students have a cat or a dog. What is the probability that a student chosen randomly from the class has a cat or a dog?

Has a cat Does not have a cat

Has a dog 9 2

Does not have a dog 4 5

**Answer:**

0 students have a cat and 92 students have a dog

The **probability **that a **student **is chosen randomly from the **class **has a **cat **or a **dog **is 15/20.

**Probability **refers to a **possibility **that deals with the **occurrence **of random **events**. The **probability **of all the **events **occurring need to be 1.

The formula of **probability **is defined as the **ratio **of a number of **favorable outcomes **to the **total **number of **outcomes**.

P(E) = Number of **favorable outcomes **/ **total **number of **outcomes**

The **class **has a **cat **and a **dog **= 9

Has a **dog **and does not have a cat = 2

Does not have a **dog **and has a **cat **= 4

Does not have **dog **and **cat **= 5

The total **strength **of the **class **is 20

The **probability **that a **student **is chosen randomly from the **class **has a **cat **or a **dog **= Number of **favorable outcomes **/ **total **number of **outcomes**

P(E) = 15 /20

Hence, The **probability **that a **student **is chosen randomly from the **class **has a **cat **or a **dog **is 15/20.

Learn more about **probability **:

https://brainly.com/question/795909

You pick a card at random.

2 3 4 5

6 7 8 9

What is P(5)

Write your answer as a percentage.

**Step-by-step explanation:**

There are a total of 8 cards, you are picking only one card,

therefore P(5) =

[tex] \frac{1}{8} \times 100 \\ = \frac{100}{8} \\ = 12.5percent[/tex]

11. Saul's baseball bat has a mass of 1 kilogram His baseball has a mass

of 150 grams. What is the mass in grams of both items combined?

C. 1.150 grams

A. 1.15 grams

D. 115,000 grams

B. 115 grams

The mass of both combined would be 1150 grams or 1.150 kilograms

What is the area of the triangle?

**Answer:**

The formula to find a triangle is (L+W)/2

**Step-by-step explanation:**

HELPPP PLEASE ANSWER

those answers bussin bussin 2 bad u cant have none

damon buyd a rose bush priced at $10. if the sales tax ix 10% how much tax will damon pay

**Answer:**

Before Tax Price: $10.00

Sale Tax: 10.00% or $1.00

After Tax Price: $11.00

please heart or brainlyiest

3. What is the value of x? A 52C 86 B 68 D 104

**Answer:**

86 i guess

**Step-by-step explanation:**

Help please will mark brainliest!!

**Answer:**

5,4 km

**Step-by-step explanation:**

we know the area and the width.

the formula of the area of a parallelogram is

A = length x width

if we substitute the values that we know, we have

23,1 = x * 4,3

to find x we have to divide the two members by 4,3

x = 23,3/4,3 = 5,4 km

Aziza has a triangle with two sides measuring 11 in. and 15 in. She claims that the third side can be any length as long as

it is greater than 4 in. Which statement about Aziza's claim is correct?

O Aziza's claim is not correct. The third side must be between 4 in. and 26 in.

O Aziza's claim is not correct. The third side can be any length less than 26 in.

O Aziza's claim is not correct. The third side can be any length.

O Aziza's claim is not correct. The third side must create a scalene triangle.

The 4th one? i think im not sure tho

**Step-by-step explanation: The correct answer is A: O Aziza's claim is not correct. The third side must be between 4 in. and 26 in.**

Solve sqare root of x-1= x-3. Check for extraneous solutions.

O A. No solution

O B. x = 2,5

C. X = 2

D. x = 5

No solution is the answer

A

A

Answer:x=2,5

Step-by-step explanation:

sqrtx-1=x-3. Sqrt5-1=5-3

sqrt2-1=2-3. Sqrt4=

sqrt1=1. 2=2

1=1

Study each equation, then solve.

18) 5 + r = 6 - r

**Answer:**

5+r=6-r

-5 -5

r=1-r

+r +r

2r=1

÷2 ÷2

r=1/2

Please help will give brainliest

**Answer:**

Should be 70 since <B is also 70

**Step-by-step explanation:**

**Going by the diagram, you just read the value of x. The value of y requires a little bit of calculation. x=70 degree**

Step-by-step explanation: Step One

Find x

You just read the value.

x is the same as the 70 degree angle. That comes about from parallel lines.

x = 70 degrees. <<<< answer

Step Two

**Find y **

All triangles have 180 degrees.

So ABC has 180 degrees.

70 + 50 + <ACB = 180 Combine like terms

120 + <ACB = 180 Subtract 120 from both sides

<ACB = 180 - 120

<ACB = 60

y = <ACB

**y = 60 degrees. <<<< Answer. **

hoped this helped :)

a company's stock was elling at $24 a share. A month later, it was selling at $30 a share. What percent is that gain

That would be a 25% gain

Round to the nearest hundredth 2^x =243

9514 1404 393

**Answer:**

7.92

**Step-by-step explanation:**

The value of x can be found by taking logarithms.

x·log(2) = log(243)

x = log(243)/log(2)

x ≈ 7.9248125...

** x ≈ 7.92**

__

A graphing calculator offers a couple of different options for solving the problem.

doivhrghfufvh - 10 points!

**Answer:**

I'm sure it's already all the way simplified since there are no common terms

I could he wrong but I dont think theres anything more you can do since they are all their own different term

**Step-by-step explanation:**

for example if it was 7x-2x-1 then you would subtract 7x and 2x and then it would come put to be 5x-1

hope this helped at all

Solve the following right triangle. Round to the nearest tenth.

You can try 110 if it’s not that then try 920

Solve for h -4(-6h - 7) = 9h + 10h - 7

**Answer:**

h=-7

**Step-by-step explanation:**

-4(-6h - 7) = 9h + 10h - 7

24h+28=19h-7

Both side -28

24h+28-28=19h-7-29

24h=19h-35

Both side -19h

24h-19h=19h-19h-35

5h=-35

h=-7

Answer:

h = -7

Step-by-step explanation:

-4(-6h-7)= 9h+ 10h-7

24h+ 28=19h-7

-19. -28. -19 -28

5h -35

h= -7

A gardener made a scale drawing of a lawn with a scale

factor of 1:4. The dimensions of her drawing are 15 inches

long by 10 inches wide. Her partner plans to make another

scale drawing of the lawn, but with a scale factor of 1:20.

What are the dimensions of her scale drawing?

A. The length is 3 inches and the width is 2 inches.

B. The length is 50 inches and the width is 75 inches.

O c. The length is 2 inches and the width is 3 inches.

O D. The length is 75 inches and the width is 50 inches.

Answer: A.

Step-by-step explanation:

I just took the exam

can i get brainlyiest?

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Helpppppp plz Ill give branliest
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