y=3x-12

**Answer: y-3x=12. y=3x+12. If the line is perpendicular it means its slope is the negative reciprocal of the given lines slope. m = 3 negative reciprocal = -1/3. So the slope of the equation of the line**

**Step-by-step explanation:**

**Answer:**

-1/3

**Step-by-step explanation:**

(-1)(m)^(-1)

this is the way to make a slope perpendicular

y=mx+b

m=slope

b=y-intercept

so:

(-1)(3)^(-1)

-1/3 is the slope of the line that is perpendicular to y=3x-12

Hope that helps :)

Please give brainliest

Dina started swimming at 3:33 P.M. She swam until 4:31 P.M. How long did Dina swim?

**Answer:**

1 hour and 38 minutes

or 98 minutes

**Step-by-step explanation:**

subtract

4:31-3:31=98 minutes

98-60=38 minutes

= 1 hour and 38 minutes

or

+98 minutes

If f(x) = x + 2x - 3, what is the value of f(1 + 2)?

**Answer****:**

**6**

**Explanation****:**

substituting- f(x)= (1+2) + 2(1+2) -3

3 + 2(3)-3

3+6-3

=6

**HOPE**** ****IT**** ****HELPS**

Divide x2 by x - 1. What is the value of the remainder?

A) 1

B) -1

C) 2

D) o

**Answer:**

I think it's B.

**Step-by-step explanation:**

Divide using polynomial division.

x + 1 + 1/ x − 1.

Maybe not 100% sure.

Benita observed that 28 out of 55 patrons at the public library used the computer. The librarian told Benita that 660 patrons enter the library throughout the day. Based on Benita's observations, how many patrons during the day would be expected to use the computer?

**Answer:**

336

**Step-by-step explanation:**

does 5+4=8 and does 1+1=2

**Answer:**

5+4=9

and the second one is right

**Step-by-step explanation:**

;)

**Answer:**

the first one is incorrect but the second one is correct!

**Step-by-step explanation:**

5 + 4 = 9

if you have 5 apples and you want to add 4 more

5 + 1 + 1 + 1 + 1 = 9

a rectangle prism has a volume of x^3 + 6x^2 - 7x - 60. If the height of the prism is x + 4, the dimensions of the base are

Height = volume / area of the base

= 10x^3 + 46x^2 - 21x - 27 / 2x^2 + 8x - 9

10x^3 / 2x^2 = 5x so the first term in the answer will be 5x

= 10x^3 + 46x^2 - 21x - 27 / 2x^2 + 8x - 9

10x^3 / 2x^2 = 5x so the first term in the answer will be 5x

No way you guys answer this correctly 0_0.

**Answer:**

C = 37.7

r = 6

Length - 0.740

Ok thanks for the points!

A pair of Nike's that originally cost $90 are on sale. The sale price is $67.50. What is the discount expressed as percent change?

**Answer:**

It is a 25 percent discount

I say this because 90/67.5 equals 75 and 25 + 75 equals what... 100

**Answer:**

75% off

**Step-by-step explanation:**

90*.75=67.50

A recipe for slime calls for 1/2 cup water and 1/4 cup glue. what is the total amount of liquid need to the recipe?

**Answer:**

3/4 is the answer.

Sam drove for 2 hours at 45 mph. He has the same distance remaining. How fast should he drive to make his average speed 60 mph?

**Answer:**

**Step-by-step explanation:**

2 hours at the speed of 45 mph = 90 miles in 2 hours

He should drive 60 miles per hour to make his speed 60 mph.

A square pyramid has a base with a side length of 6 inches and lateral faces with heights of 11 inches. What is the surface area of the pyramid?

**Answer:**

[tex]\huge\boxed{\sf 168\ in.\²}[/tex]

**Step-by-step explanation:**

**Surface area of the base:**

= Length * Length

= 6 * 6

= 36 in.²

**Surface Area of 1 Lateral Face:**

= [tex]\sf \frac{1}{2} (Base * Height)[/tex]

Base = 6 inches

Height = 11 inches

= 1/2 (6*11)

= 3 * 11

= 33 in.²

**Surface Area of 4 lateral faces:**

= 33 * 4

= 132 in.²

**Surface Area of the whole pyramid:**

= 132 + 36

= **168 in.²**

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807**Answer:**

SA = 168 in.²

**Step-by-step explanation:**

The surface area is the sum of the area of the base and the areas of the 4 congruent triangular sides.

s = side of the base

h = height of each side

SA = s² + 4(sh/2)

SA = (6 in.)² + 4(6 in.)(11 in.)/2

SA = 36 in.² + 132 in.²

SA = 168 in.²

Solve for n

56 = -4n

a. 60

b. -4

c. -14

d. 224

The answer is c. -14

help give thanks stars

0.5a - 1.9b = -1.4 b

A rectangular prism has a length of 7 cm, a width of 4 cm, and a height of 2 1/2cm.

The prism is filled with cubes that have edge lengths of 1/2 cm.

How many cubes are needed to fill the rectangular prism?

Enter your answer in the box.

To fill the rectangular prism,

cubes are needed.

**Answer:**

560 cubes

**Step-by-step explanation:**

Volume of prism: lwh, 7*4*2.5, 70cm!

Volume of cubes: lwh, 0.5*0.5*0.5, 0.125cm!

70cm/0.125cm=560 cubes.

**Answer:**

560 cubes

**Step-by-step explanation:**

first solve the volume of the rectangular prism

V = l x w x h

where l is the length

w is the width

h is the height

V = 7 x 4 x 2.5

v = 70 cu cm

then solve the volume of the box

v = e^3

v = 0.5^3

v = 0.125

number of cubes = 70 / 0.125

number of cubes = 560 cubes

Which of the figures appear to be

congruent?

Answer:

II and II

They are very similar.

Hope that helps:)

II and II

They are very similar.

Hope that helps:)

use elimination metho to solve the system of equations

**Answer:**

There are infinitely many solutions.

**Step-by-step explanation:**

3x + 2y = 7

-9x - 6y = -21

Now multiply the first equation by 3

3 × 3x + 2y = 7 ➡ 9x + 6y = 21 Now subtract second equation from first equation

9x + 6y - 9x - 6y = 21 - 21

0 = 0

The equation has infinitely many solutions meaning whatever value you write instead of x and y there will be solution.

Bobby Hill is taking lady bird to the vet. The bill

is $72 dollars. Lady bird received 3 shots for

$12 each and had to take 2 pills for x amount

each. How much were each pill?

12 = 72 - 12

72 12x + 3x

72 = 36 + 2x

None of the above

**Answer:**

72= 36 + 2x

**Step-by-step explanation:**

1 shot= $12

3 shots= $12×3= $36

$72-$36= $36

2 pills= $36

1 pill= $36/2=$18

x= $18

72= 36 + (2×18)=

36 + 36= 72

HELP

Pre-algebra

Not understanding :/

The answer will end up being c

SOMEONE PLEASE EXPLAIN THIS TO ME

17.5 = x

**Step-by-step explanation:**

1st you add 85 and 55 since those to angles are congruent (means similar) to 8x

2nd you get 140 after adding then

3rd since the angles are congruent you just divide the 140 by 8 to get the value of x

5. What is the volume of the right triangular prism?

12 m

A. 64 m

B. 128 m

C. 192 m®

D. 384 m

4 m

8 m

5. C

V = 0.5 • 12 • 8 • 4 = 192

6. G

V = (1/3) 6x^2 • 6 • 8 = 96x^2

V = 0.5 • 12 • 8 • 4 = 192

6. G

V = (1/3) 6x^2 • 6 • 8 = 96x^2

PLEASE HELP ME WITH THIS MATH PROBLEM

w−15=−4

**Answer:**

w = 11

**Step-by-step explanation:**

add 15 to each side of the equation

w = 15 + (-4)

w = 11

**Answer: w=11**

**Step-by-step explanation:**

A washer and a dryer cost $596 combined. The washer costs $54 less than the dryer. What is the cost of the dryer?

**Answer:**

The washer costs 220 and the dryer costs 376! brainliest pls!

**Step-by-step explanation:**

The difference of a number and 8 is -15

**Answer:**

-7

**Step-by-step explanation:**

x-8=-15

x=-7

Ahmed buys a house for £179500

A year later he sells the house for £190 270

Calculate the percentage profit Ahmed makes.

I

Total mar

Answer: 6% of profit

Step-by-step explanation:

Find the % of profit

179 500 / 190 270 ≈ 0,94 = 94 %

100% - 94% = 6%

Factorise

5 x y + 5 x + 4 y + 4

**Answer:**

5 x y + 5 x + 4 y + 4

5x(y+1)+4(y+1)

(y+1)(5x+4)

12+16q-q and q=2 evaluate

**Answer:q=0,\:q=-16**

**Step-by-step explanation:**

A consumer group has determined that the distribution of life spans for gas ranges (stoves) has a mean of 15.0 years and a standard deviation of 4.2 years. The distribution of life spans for electric ranges has a mean of 13.4 years and a standard deviation of 3.7 years. Both distributions are moderately skewed to the right. Suppose we take a simple random sample of 35 gas ranges and a second SRS of 40 electric ranges. Which of the following best describes the sampling distribution of the difference in mean life span of gas ranges and electric ranges?

a. Mean = 1.6 years, standard deviation = 7.9 years, shape: moderately right-skewed.

b. Mean = 1.6 years, standard deviation - 0.92 years, shape: approximately Normal.

c. Mean= 1.6 years, standard deviation = 0.92 years, shape: moderately right skewed.

d. Mean =1.6 years, standard deviation =0.40 years, shape: approximately Normal.

e. Mean =1.6 years, standard deviation =0.40 years, shape: moderately right skewed.

**Answer:**

b. Mean = 1.6 years, standard deviation - 0.92 years, shape: approximately Normal.

**Step-by-step explanation:**

**Central Limit Theorem**

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

**Subtraction of normal Variables:**

When we subtract normal variables, the mean is the subtraction of the means, while the standard deviation is the square root of the sum of the variances.

**A consumer group has determined that the distribution of life spans for gas ranges (stoves) has a mean of 15.0 years and a standard deviation of 4.2 years. Sample of 35:**

This means that:

[tex]\mu_G = 15[/tex]

[tex]s_G = \frac{4.2}{\sqrt{35}} = 0.71[/tex]

**The distribution of life spans for electric ranges has a mean of 13.4 years and a standard deviation of 3.7 years. Sample of 40:**

This means that:

[tex]\mu_E = 13.4[/tex]

[tex]s_E = \frac{3.7}{\sqrt{40}} = 0.585[/tex]

**Which of the following best describes the sampling distribution of the difference in mean life span of gas ranges and electric ranges? **

Shape is approximately normal.

Mean:

[tex]\mu = \mu_G - \mu_E = 15 - 13.4 = 1.6[/tex]

Standard deviation:

[tex]s = \sqrt{s_G^2+s_E^2} = \sqrt{0.71^2+0.585^2} = 0.92[/tex]

So the correct answer is given by option b.

24) Identify the binomials

a) 100

c) al-a+ba

b) x+y-xy

d) z2+z

**Answer:**

b

**Step-by-step explanation:**

*Your **well** wisher*

*Hope **it **will **be **helpful*

What is the area of the triangle? Use the formula: Area of a triangle = 1/2bh.How do you find the area of a triangle?

9514 1404 393

**Answer:**

4 square inches

**Step-by-step explanation:**

The only triangle in the figure is 4 in wide and 2 in high. Using these values in the given formula, we find the area to be ...

A = 1/2bh

A = (1/2)(4 in)(2 in) = 4 in²

**The area of the triangle is 4 square inches**.

**Answer:**

4 sq in

**Step-by-step explanation:**

the height of the triangle is 2 inches 2 x 4 = 8 8/2 =4

If a point on a coordinate plane is placed 5 lines to the right and 3 lines up, what would the ordered pair be?

**Answer:**

(5,3)

**Step-by-step explanation:**

ose purchased a vehicle for business and personal use. In 2020, he used the vehicle 10,500 miles (80% of total) for business and calculated his vehicle expenses using the standard mileage rate (mileage was incurred ratably throughout the year). He paid $850 in interest and $85 in property taxes on the car. Required: Calculate the total business deduction related to the car. (Round your final answers to nearest whole dollar amount.)
URGEENNTTTTTTTT!!!!Whats the theme of Call of the wild by jack london? include 3 quotes from ch1-7 and page numbers. Thanks!!!
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