6r + 7 = 13 + 7r with through explanation

Answer:

68

Step-by-step explanation:

Answer: The mistake caused the perimeter to increase by 4 inches

The mistake caused the area to increase by 13 square inches

Step-by-step explanation: The original dimensions have been given as 5 inches by 7 inches. If this measurement had been correctly used, the perimeter was supposed to be;

Perimeter = 2(L + W)

Perimeter = 2(5 + 7)

Perimeter = 2(12)

Perimeter = 24 inches

Also the area was supposed to be;

Area = L x W

Area = 5 x 7

Area = 35 square inches

However, Sam accidentally printed a photo that is 6 inches by 8 inches, therefore the effect would be as follows;

Perimeter = 2(L + W)

Perimeter = 2(6 + 8)

Perimeter = 2(14)

Perimeter = 28 inches

And the Area would be

Area = L x W

Area = 6 x 8

Area = 48 square inches

From the calculations so far, the mistake would cause the perimeter to increase by 4 inches (28 inches - 24 inches).

Also the area would likewise increase by 13 inches (48 inches - 35 inches).

Answer:

Step-by-step explanation:

35x + 10 = 190

35x = 190 - 10

35x = 180

x = 180 / 35

Therefore x = 5.14

Answer:

x=5 1/7 or 5.14

Step-by-step explanation:

35x+10=190

35x=190-10

35x=180

x= 180÷35

x=5 1/7 or 5.14

====================================================

Explanation:

The number 4 shows up 14 times

The number 3 shows up 6 times

This is a total of 14+6 = 20 times we get a 3 or a 4 on the dice

This is out of 64 total rolls

Use a calculator to find that 20/64 = 0.3125

Move the decimal point over 2 spots to the right to get 31.25%

Lastly, round this to the nearest whole number percent to get 31%

Keep in mind that this only works for experimental probability. Theoretical probability is going to be different.

Answer:

31 percent on edgunity

Step-by-step explanation:

Answer:  ±7

Step-by-step explanation:

Solution of the expression are,

⇒ ± 7

Mathematical expression is defined as the collection of the number variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

The expression is,

⇒ √ 49

Now, We can simplify as;

⇒ √49

⇒ √ 7 × 7

⇒ ± 7

Thus, Solution of the expression are,

⇒ ± 7

Learn more about the mathematical expression visit:

brainly.com/question/1859113

#SPJ2

Answer: A. 50 miles per hour

Step-by-step explanation:

in between the lines if you look at the number it goes 25,50,75,100 etc.

Answer:

54/3=18 so Brad is 18 and Corey is 36

36 + 18 = 54

Step-by-step explanation:

If Corey is 2 times older then you divide by that number which is 2 + 1 so you divide by 3.

Hope this helps can I have brainliest

Answer:

$299.90

Step-by-step explanation:

Add the $34.56 back to the $265.34

Answer:

It is translation

3

-5

in brackets

Answer:

300 g. of chocolate.

75 g. of flour

3 people.

Step-by-step explanation:

These are proportion problems.  I'll just give you the first formula.

[tex]\frac{200}{4} =\frac{x}{6} \\\\(200)(6)=4x\\1200=4x\\x=300[/tex]

Can you do the rest? I'll be waiting in the comments.

:)

Answer:

Step-by-step explanation:

∠A + ∠B  = 90°  {given they are complementary}

5x+ 15 + 30 = 90

5x + 45 = 90

5x = 90 - 45

5x = 45

x = 45/5

x = 9

Answer:

2 inch

Step-by-step explanation:

The radius is the fixed distance from the center of a circle to any point on its circumference. The radius of a circle always equals half of its diameter, so to find the diameter, multiply the radius by two. ( 1 x 2= 2 inch)

The radius of a circle is 1/2 inch with a diameter of 1 inch.

The circumference of a circle is the distance around the circle which is 2πr.

The diameter of a circle is the largest chord that passes through the center of a circle it is 2r and the radius of a circle is half if the diameter which is r.

Given, A circle has a diameter of 1 inch.

As we know the radius of a circle is half of the diameter,

∴ A circle with a diameter of 1 inch will have a radius of 1/2 inch.

learn more about circle here :

https://brainly.com/question/11833983

#SPJ2

Answer:

78

Step-by-step explanation:

Wrong theories the passageway

Answer:

Cost of living is the amount of money needed for fixed expenses such as housing, food, taxes, and health care, as well as variable expenses. Big cities tend to have a higher cost of living than smaller cities.

Answer: 49929 years ago

Step-by-step explanation:

Radiocarbon dating is a method that provides objective age estimates for carbon-based materials that originated from living organisms

To calculate the time, we will use exponential formula

R% = e^ -kt

Where t = number of years

0.25/100 = e^- 0.00012t

Log both sides with natural logarithm

Ln0.0025 = lne^-0.00012t

-5.9915 = -0.00012t

t = 5.9915/0.00012

t = 49928.9 years

Approximately t = 49929 years

The whale died approximately 49,929 years ago.

To determine how long ago the whale died, we use the fact that its vertebrae contain roughly 0.25% as much carbon-14 as they originally did when the whale was alive. This suggests the carbon-14 has decayed, following its known decay rate.

The carbon-14 decay formula is:

N(t) = N0 × [tex]e^{-kt}[/tex]

where:

Given that N(t)/N0 = 0.0025, we solve for t:

1. Divide both sides by N0:

0.0025 = [tex]e^{(-0.00012 * t)}[/tex]

2. Take the natural logarithm of both sides:

ln(0.0025) = -0.00012 × t

3. Solve for t:

t = ln(0.0025) / -0.00012

t = −5.991464547/−0.00012

Calculating this, we get:

t ≈ 49928.87 ≈ 49,929 years

Therefore, the whale died approximately 49,929 years ago.

FInd the height of the box by dividing the volume by 7 x 5 ( length x width)

Height = 105 / 35

Height = 3cm

There are 6 sides to a box.

Surface area = 2 x length x width + 2 x length x height + 2 times height x width

SA = 2*7*5 + 2*7*3 + 2*5*3

SA = 70 + 42 + 30

SA = 142 cm^2

Answer:

x² + y² = 144

Step-by-step explanation:

The general equation of a circle is given as

(x - a)² + (y-b)² = r²

where a and b are the center of the circle along the x and y axis respectively and r is the radius of the circle.

Hence a circle that has its center at the origin and has a diameter of 24 units, we can deduce that the values of a,b are 0,0. Also,

radius = diameter/2

= 24/2

= 12 units

Hence the standard equation of the circle

(x - 0)² + (y - 0)² = 12²

x² + y² = 144

Answer:

100 people

Step-by-step explanation:

The new population of the country at the end of the year considering all the conditions will remain at 100.

Arithmetic operators are four basic mathematical operations in which summation, subtraction, division, and multiplication involve.,

Summation = addition of two or more numbers or variable

Subtraction = Minus of any two or more numbers with each other called subtraction.

As per the given,

The population of the country at the beginning of the year = 100 people.

10 immigrated → 100 + 10 = 110

20 emigrated → 110 - 20 = 90

Birth rate is 15 → 90 + 15 = 105

Death rate is 5 → 105 - 5 = 100

Hence "The new population of the country at the end of the year considering all the conditions will remain at 100".

To learn more about the arithmetic operators,

brainly.com/question/25834626

#SPJ2

Answer:

28.26

Step-by-step explanation:

If you find the area by using the eqaution A=pi*raduis*2 you can then divide it by 4

Answer:

√85 or 9.22

Step-by-step explanation:

For this, you'd want to use the distance formula, which is just something you'd eventually memorize.

Distance = [tex]\sqrt{(x_{2}- x_{1})^{2} + (y_{2}- y_{1})^{2}}[/tex]

Then, you'd plug in the values. Something to keep in mind is the coordinate that is farther right will be ([tex]x_{2} ,y_{2}[/tex]), since [tex](x_{2}- x_{1})[/tex] is supposed to represent the change in x (and same with the y).

d = √( (7 - (-2))² + (9 - 7)²)

= √( (9²) + 2²)

= √(81 + 4)

= √85

= 9.22

I hope this helps!

The distance between point (7, 9) and point (-2, 7) is √85 units.

To find the distance between two points, you can use the distance formula:

[tex]\[d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}\][/tex]

In this case, the coordinates of the two points are:

Point 1: (7, 9)

Point 2: (-2, 7)

Now, plug these coordinates into the distance formula:

[tex]\[d = \sqrt{(-2 - 7)^2 + (7 - 9)^2}\][/tex]

Simplify inside the square root:

[tex]\[d = \sqrt{(-9)^2 + (-2)^2}\][/tex]

[tex]\[d = \sqrt{81 + 4}\][/tex]

[tex]\[d = \sqrt{85}\][/tex]

So, the distance between point (7, 9) and point (-2, 7) is[tex]\(\sqrt{85}\)[/tex] units, which is an irrational number and cannot be simplified further as a whole number or fraction.

Learn more about distance between points here:

https://brainly.com/question/7243416

#SPJ2

Answer:

Honey the answer is 40.

It's correct cuz I had the same question sugar ^-^

Answer:

A : The height of the prism is is 10 cm

B : DFG is  a base

D : The appropriate unit of measure for the volume is cubic centimetres

Step-by-step explanation:

In the given right triangular prism, ADFG constitutes one of the bases, and the appropriate unit for volume is cubic centimeters. However, details about the height and the specific area of the base are not conclusively determined. (2 and 4 are correct)

Let's analyze each statement:

1. The height of the prism is 10 cm.

  - This statement is not necessarily true. The height of a right triangular prism is typically measured perpendicular to the base. The provided information about AC and AD doesn't directly determine the height.

2. ADFG is a base.

  - This statement is true. A base of the right triangular prism can be identified by the vertices, and ADFG forms one of the bases.

3. ADFG is a lateral side.

  - This statement is not true. ADFG is a base, not a lateral side.

4. The appropriate unit of measure for the volume is cubic centimeters.

  - This statement is true. Volume is measured in cubic units, and in this context, cubic centimeters is appropriate.

5. The area of the base is 45 square centimeters.

  - This statement is not necessarily true. The area of the base cannot be determined solely from the information given.

So, the true statements are 2 and 4.

Answer:

We are 99% confident interval for the population proportion of passing test scores between ( 0.5987  and 0.9413 )

Step-by-step explanation:

Given -

n = 40

Population proportion = [tex]\widehat{(p)}[/tex] = [tex]77\%[/tex] = .77

1 - [tex]\widehat{(p)}[/tex] = 1 - .77 =.23

[tex]\alpha[/tex] = 1 - confidence interval = 1 - .99 = .01

[tex]z_{\frac{\alpha}{2}}[/tex] = [tex]z_{\frac{.01}{2}}[/tex] = 2.58

99% confidence interval for the population proportion of passing test scores=

[tex]\widehat{(p)}\pm z_{\frac{\alpha}{2}} \sqrt{\frac{\widehat{(p)} (1 - \widehat{p})}{n}}[/tex]

= [tex].77\pm z_{\frac{.01}{2}} \sqrt{\frac{{(.77)} (.23)}{40}}[/tex]

= [tex].77\pm 0.1713[/tex]

= [tex](.77 + 0.1713 , .77 - 0.1713)[/tex]

= ( 0.5987 , 0.9413 )

Answer:

The solution is given by s=9 because it makes the value of 3s+12 equal to 21.

Step-by-step explanation:

If you replace s with 9 you will get 21

Answer:

b. The solution is given by s = 3 because it makes the value of 3 s + 12 equal to 21.

Explanation:

I took the test and got it right.

Step 1: Substitute s for 3. You get 3(3) + 12 = 21.

Step 2: 3(3) + 12 = 21 is converted to 9 + 12 = 21.

Step 3: 9 + 12 equals 21.

The algebraic expression for the cost of entering a state park and camping for n nights, with an entry fee of $6.00 and a nightly fee of $7.50, is Cost = $6.00 + ($7.50 times n).

The algebraic expression to represent the cost in dollars of entering a state park and camping for n nights, when the state park charges a $6.00 entry fee plus $7.50 per night of camping, is calculated as follows:

Cost = Entry fee + (Cost per night times Number of nights)

Here, the entry fee is $6.00, and the cost per night is $7.50. Therefore, the expression becomes:

Cost = $6.00 + ($7.50 times n)

Where n represents the number of nights spent camping.

Answer:

4y^2 + 14y + 34

I hope this helps :)

Answer:

C

Step-by-step explanation: