What is the solution of this equation w+7=13

Answers

Answer 1

Answer:

6

Step-by-step explanation:

Answer 2

Answer:

w=6

Step-by-step explanation:

(backwards method)

13-7=6

so

w=6


Related Questions

Given the points A(-2, 4) and B(7, -2), find the coordinates of the point P on directed line segment that partitions AB in the ratio 1:2.

Answers

When a line segment with point A with the co-ordinates (x1, y1) and point B with the co-ordinates (x2,y2) is divided into the ratio m:n by a point P, we find the x-coordinate of the point by using the following formula: (mx2+nx1)/m+n and the y-coordinate by using this formula: (ny1+my2)/n+m
x-coordinate of P=[(1x7)+(2x-2)]/1+2=1
y-coordinate of Q=[(2x4)+(1x-2)]/2+1=2
Ans: P=(1,2)

The coordinates of the point P on directed line segment that partitions AB in the ratio 1:2 is (4, 0)

Given the point A (-2, 4) and B(7, -2). The coordinate of the point P on the line segment that partitions AB in the ratio 1:2, is expressed as:

[tex]P(X, Y) = (\frac{ax_1+bx_2}{a+b}, \frac{ay_1+by_2}{a+b})[/tex]

Substitute the given coordinates where a = 1 and b = 2

[tex]P(X, Y) = (\frac{1(-2)+2(7)}{1+3}, \frac{1(4)+2(-2)}{1+2})\\P(X, Y) = (\frac{-2+14}{3}, \frac{4-4}{1+2})\\P(X, Y) = (\frac{12}{3},\frac{0}{3})\\P(X, Y) = (4, 0)\\[/tex]

Hence the coordinate of point P is (4, 0)

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Pls help I am stuck on this question

Answers

Answer:

153.94 cm

Step-by-step explanation:

a = r^pi squared

r = d/2

7^pi = 21.98

21.98 squared = 153.94 cm

Answer:

see below

Step-by-step explanation:

The diameter is 14 cm

The radius is 1/2 of the diameter

r = d/2 = 7cm

We want to find the area

A = pi r^2 where r is the radius

If pi = 3.142

A = 3.142 ( 7)^2

A =153.958 cm^2

If pi = 3.14

A = 3.14 ( 7)^2

A =153.86 cm^2

Depends on the value of pi

On Rectangle QRST below, if Q is located at -6,-1 and S is located at 1, 5, find RT

Answers

Answer:

[tex]|RT|=\sqrt{85}$ units[/tex]

Step-by-step explanation:

On Rectangle QRST

QS is congruent to RT since they are opposite side of a rectangle.

If Q is located at (-6,-1) and S is located at (1, 5), we simply find the length of QS using the distance formula.

For points [tex](x_1,y_1)$ and (x_2,y_2)[/tex] on the coordinate axis,

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

In this case,[tex](x_1,y_1)=(-6,-1)$ and (x_2,y_2)=(1, 5)[/tex]

[tex]|QS|=\sqrt{(1-(-6))^2+(5-(-1))^2}\\=\sqrt{(1+6)^2+(5+1)^2}\\=\sqrt{(7)^2+(6)^2}\\|QS|=\sqrt{85}$ units[/tex]

Since

[tex]|QS| \cong |RT|\\ |RT|=\sqrt{85}$ units[/tex]

The marcus family goes out to eat 4 nights during vacation. There are two adults and two children in their family
The first night they go out to a buffet, the cost is 24.99 per adult and 12.99 per child. Plus 8% sales tax, how much did dinner cost?

Answers

answer:  

82.0476 i think

Step-by-step explanation:

Answer:

82.04 dollars

i hope this was helpful

Step-by-step explanation:

The small box --------- similar to the large box. (is/is not)

The small box ---------similar to the medium box if the medium box has a width and height equal to (is/is not)

Answers

Answer: is not, 15 inches and 9 inches

Step-by-step explanation:

Answer:

1. is not

2. 15, 9 inches

Step-by-step explanation:

What is a intersection

Answers

Answer:

Intersection means a line common to other lines and an action of intersection/intersecting.

hope it helps!


Which expressions are equivalent to
x+x+x+2?

Answers

Answer:

3x + 2

Step-by-step explanation:

x = 1x but leaving the x alone equals the exact thing.

If there are x + x + x, this means 3x since it is also

1x + 1x + 1x.

This is another expression for 3x + 2.

The anwser to this question is 3x+2

help me plz and 5x + 25 > 75

Answers

Answer:

x > 10

Step-by-step explanation:

Isolate the variable, x. Treat the > sign as a equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

PEMDAS is the order of operation, and =

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

First, subtract 25 from both sides:

5x + 25 (-25) > 75 (-25)

5x > 75 - 25

5x > 50

Next, divide 5 from both sides:

(5x)/5 > (50)/5

x > 50/5

x > 10

x > 10 is your answer.

~

keisha estimates 259 + 279 by rounding each number to the nearest 10. what is keisha's estimate of the sum?

Answers

Answer:

540

Step-by-step explanation:

259 + 279 = 538

Rounded to nearest 10

= 540

The answer:

260+280

=540

Find the distance between the two points rounding to the nearest tenth (if necessary).

(5,3) and (3,6)

Answers

Answer:

1.5

Step-by-step explanation:

Plug in numbers into the distance formula.

y2-y1

____

x2-x1

6 - 3.       3

____.     ___

3 - 5.       -2

3/-2=-1.5

Answer:

3.6 or Sqrt(13)

Step-by-step explanation:

plug into distance formula

(3-5)^2 + (6-3)^2

4 + 9

Sqrt(13)

Sqrt(13) is equal to 3.6055127546

^ is rounded up to 3.6

PLEASE HELP!! WILL GIVE BRAINLIEST IF RIGHT

An account earns annual simple interest, Find the interest earned, principal, interest rate, or time.
Interest earned: ?
Principal: $1250
Interest rate: 3%
Time: 4 years

Answers

Answer:

:

I think I know how to solve this. You are trying to find the interest earned.

Step-by-step explanation:

you take the interest rate and convert into a percentage. 3%=0.03You divide that decimal by 100. 0.03/100=0.003Take this number and multiply by the time. 0.0003x4=0.0012You then finally multiply that number by the principle and you have your answer. 0.0012x1250=1.5 percent

Answer:

t says or, so you can answer any however the answer to time would be 4 years or so

Step-by-step explanation:

10x5 = 50

50x50 = 2500

2500x.4= 1000

1000/250=4

4

Step-by-step explanation:

Which prism has a volume of 6 cubic units? A prism has a length of 1 and one-half, height of 1, and width of 3. A prism has a length of 2, height of 1 and one-half, and width of 2. A prism has a length of 1 and one-fourth, height of 1, and width of 4. A prism has a length of 3, height of 1 and one-fourth, and width of 2.

Answers

Answer: The second prism with length of 2, height of 1 and one half, and a width of 2.

Step-by-step explanation:

2 * 1.5 * 2=  6

Answer:

B

Step-by-step explanation:

its B

Jody has a plastic container in the shape of a rectangular prism. The container is 8 1/2 inches long, 4 inches wide, and 3 1/2 inches high. What is the volume of this plastic container?

Answers

Answer:

=119 in ^3

Step-by-step explanation:

The volume of a rectangle prism is given by

V = l*w*h

Changing to decimal form

  = 8 .5 * 4 * 3.5

  =119 in ^3

Answer: 119^3

Step-by-step explanation:

To find out the volume of a rectangular prism you have to multiply length x width x height.

8.5 x 4 = 34

34 x 3.5 = 119^3

What is a solution for the inequality y-7<-12

Answers

Answer:

y<-5

Step-by-step explanation:

y-7<-12

y<-5

Answer:

The answer is y is less than -5

Step-by-step explanation:

Neil goes to the pet shop and selects a treat for his dog. He chooses one, then chooses another. What is the probability Neil selects a bone and then a ball? There are 3 collars, 4 bones, and 5 balls.

Answers

Answer:

15.15% probability that Neil selects a bone and then a ball

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Initially, there are 3+4+5 = 12 treats. 4 of those are bones. So the probability of selecting a bone is 4/12 = 1/3.

Now suppose a bone has been selected. Now there are 11 treats, 5 of which are balls. So the probability of selecting a ball in this situation is 5/11.

What is the probability Neil selects a bone and then a ball?

[tex]p = \frac{1}{3}*\frac{5}{11} = \frac{5}{33} = 0.1515[/tex]

15.15% probability that Neil selects a bone and then a ball

what place value is the 8 in in the number 475.082

Answers

The answer is 8 hundredths

The place value is the 8 in in the number given is 8 hundredths.

What is place value?

The place value is the position of each digit in a number. The place value of digits is determined as ones, tens, hundreds, thousands,ten-thousands and so on, based on their position in the number.

The place value =

Ones, tens, hundreds, thousands, ten-thounsands.

Place value names to the right of the decimal work in a similar way, only given that they are given fractional names because, well, they're fractions of one:

tenths: 0.1 = 1/10

hundreths: 0.01 = 1/100

thousandths: 0.001 = 1/1000

ten-thousandths: 0.0001 = 1/10000

and so on.

As the 8 is in the second unit value over, that means it's in the hundredths place. That means that its value is eight hundredths.

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12 is 1/5 of what number?

Answers

60.

12 x 5= 60

Therefore, 12 is 1/5 of 60.

Answer:

12 is 1/5 of 60

Step-by-step explanation:

12 x 5 is 60.

Please Help!! In a discount store, 12% of the 100 cups in stock have some unnoticeable defect. What is the probability of buying 12 cups that don’t have any defect? And what is the probability of getting all 12 cups having a defect?

Answers

≈Answer:

a)What is the probability of buying 12 cups that don’t have any defect?

0.1955

b) And what is the probability of getting all 12 cups having a defect?

9.52 × 10⁻¹⁶

Step-by-step explanation:

In the question,we are given the following values:

12% of the 100 cups in stock have some unnoticeable defect.

The number of cups that have defect in stock is calculated as:

12/100 × 100 = 12 cups

The number of cups that doesn't have defect is calculated as:

Total number of cups in stock - Number of cups in stock that have defect.

100 - 12 = 88 cups

a) What is the probability of buying 12 cups that don’t have any defect?

Probability Formula = Number of events/ Number or possible outcomes.

The probability of buying cups that don't have any defect =

88/100 × 87/99 × 86/98 × 85/97 × 84/96 × 83/95 × 82/94 × 81/93 × 80/92 × 79/91 × 78/90 × 77/89  = 0.1955138721

Approximately = 0.1955

b) And what is the probability of getting all 12 cups having a defect?

Probability Formula = Number of events/ Number or possible outcomes.

= 12/100 × 11/99 × 10/98 ×  9/97 × 8/96 × 7/95 × 6/94 × 5/93 × 4/92 × 3/91 ×2/90 × 1/89  

= 9.519991996 ×10⁻¹⁶

Approximately = 9.52 × 10⁻¹⁶

Tamika’s math test scores (out of 30) are 25, 28, 26, 25, 8, 29, 28, 24, 23.


a)What is the outlier in this set?

b) Why might Tamika’s teacher decide to remove this outlier when calculating the average for her report card?

c) Which average is affected more by the removal of the outlier, the mean or median? Justify your answer.

I WILL GIVE BRAINLIEST IF YOU ANSWER ALL THE 3 QUESTIONS GOOD.

Answers

Answers:

A.) 8 is the outlier in the set. It is the only number that doesn't match with the others. It is the furthest from the median of the numbers.

B.) The outlier could represent false information. It could greatly drop the number of the mean, or the average, range of the scores.

C.) The mean is affected more. The mean of a set of numbers is the average of the set. The median just locates the middle-most number. The median would not always give an accurate representation of the average of the set like the mean would.

EMERGENCY!!!!
What is the volume of the following rectangular prism?

Answers

Answer:

6 3/4

Step-by-step explanation:

3 3/8 * 2 = 6 3/4

The points (0, 1), (1, 5), (2, 25), and (3, 125) are on the graph of a function. Which equation represents that function?

Answers

Answer:

Hello there I would love to assist but could you give me a little more info I think I know the answer but I want to make sure I got it 100% correct unless you cant give me more info ill just tell you what I think it is but if u can give me more info before I give u the answer to make sure its correct would be appreciated

Step-by-step explanation:

Answer:

D, f(x)=5x

got it right

Examine the equation. –3x + 18 = 7x What could you do to isolate the variable term to one side of the equation? Add 3x to both sides. Subtract 3x from both sides. Add 18 to both sides. Subtract 18 from both sides.

Answers

Answer:

You would add 3x to both sides. Then divide by 10 on both sides.

What to do to isolate the variable term to one side of the equation is to add 3x to both side

Given the equation, -3x + 18 = 7x, we need to isolate the variable term. To do that, we will follow the steps below;

Add 3x to both sides of the equation to have;

-3x + 18 + 3x = 7x + 3x

18 = 7x + 3x

Swap sides

7x + 3x = 18

10x = 18

Divide both sides by 10

10x/10 = 18/10

x = 1.8

From the steps above, what to do to isolate the variable term to one side of the equation is to add 3x to both side

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Pls help guys! 15 points!
Select all of the following true statements if R = real numbers, N = natural numbers, and W = {0, 1, 2, ...}.
a) W c N
b) {0, 1, 2, ...} c_W
c) {no solution} c N
d) 9 e W
e) R c W
f) -5 e W

Answers

Answer:

B AND C

Step-by-step explanation:

Answer:

It should be B and C

Step-by-step explanation:

Which fraction is equal to 0.34

Answers

Answer: 17/50

Multiply

0.34/1×100=34/100

Simplify

34/100÷2/2=17/50

A fraction which is equivalent to 0.34 is; 17/50

The decimal number, 0.34 can be represented in words as; 34 hundredths.

In essence, mathematically, we have;

34/100

= 17/50.

17/50 is obtained by factorisation of 2 out of the numerator and denominator.

Hence, a fraction which is equivalent to 0.34 is 17/50.

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Can someone please help me? I keep losing points...

CORRECT ANSWERS ONLY PLEASE!!!!

Use the formula i = prt, where i is the interest earned, p is the principal (starting amount), r is the interest rate expressed as a decimal, and t is the time in years.

Round your answer to the nearest cent.

Answers

Answer:

She will have $78,080 dólars in her account and $17,080 is the interest she will earn in 2 years

Step-by-step explanation:

i = prt

i = ($61,000)(.14)(2)

i = $17,080

$78,080

Answer:

$78080

Step-by-step explanation:

Using the given formula :

I = P × R × T

I = 61000 × 14/100 × 2

I = $17080

She have = 61000 + 17080 = $78080

If a < 0 then the graph opens_____​

Answers

Answer:

down

Step-by-step explanation:

Assuming this is for a parabola

a>0 the graph opens up

a < 0 the graph opens down

( negative is a frown)

> means the line is curving downwards.

< means the line is curving upwards.

Assuming that this is a parabola, the inequality a > 0 means that the line is curving in a downward form. This inequality will also have a maximum.

Best of Luck!

need answer ASAP a house shaped like an octagon has a large porch, as shown. what is the area of the house and the porch

Answers

Answer:

I think the answer is 775 square feet. Not 100% sure though

Answer:

875

Step-by-step explanation:

Hope this helps.

Today, everything at a store is on sale. The store offers a 20% discount.If the regular price of an item is x dollars, what is the discount price in dollars? Type the correct expression in the box below.

Answers

Answer:

0.80x dolllars

Step-by-step explanation:

20% discount of the total amount is

0.20 * x dolllars

So if you start with x dollars you need to subtract the discount to get the new (lower ) price.

x - (0.20 * x) dolllars

1* x - 0.20 * x

x * 1 - 0.20 * x

x * ( 1 - 0.20 )

x * ( 0.80 )

0.80x dolllars

Help me find the mean of
68, 71, 75, 74, 77, 71, 73, 71, 72, 74, and 79.

Answers

Answer: 73.189 (rounded)

Step-by-step explanation:

The answer would be 73.18

Step by step:

-First you have to add all the numbers so 68+71+75+74+77+71+73+71+72+74+79, you’ll get 805

-Then you have to divide by the number of values so there are 11 values so you divide 805 by 11

I suck at explaining but I hope this helped

The number y of raccoons in an area after x years can be modeled by the function y= 0.4x^2+2x+2. When were there about 45 raccoons in the area? Round your answer to the nearest year

Answers

Answer:

A timeframe of 8 years is when there were 45 raccoons in the area.

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to Right

Algebra I

Equality Properties

Multiplication Property of EqualityDivision Property of EqualityAddition Property of EqualitySubtraction Property of Equality

Standard Form:
[tex]\displaystyle ax^2 + bx + c = 0[/tex]

Quadratic Formula:
[tex]\displaystyle x=\frac{-b \pm \sqrt{b^2 - 4ac}}{2a}[/tex]

Step-by-step explanation:

Step 1: Define

Identify given.

[tex]\displaystyle \begin{aligned}y & = 0.4x^2 + 2x + 2 \\y & = 45 \ \text{raccoons} \\\end{aligned}[/tex]

Step 2: Find Specific Year

We are trying to find the year when there were 45 raccoons present in the area. From first glance, we see we probably can't factor the quadratic expression, so let's set up to use the Quadratic Formula:

[Model Equation] Substitute in y:
[tex]\displaystyle 0.4x^2 + 2x + 2 = 45[/tex][Equality Properties] Rewrite [Standard Form]:
[tex]\displaystyle 0.4x^2 + 2x + 2 = 45 \rightarrow 0.4x^2 + 2x - 43 = 0[/tex][Standard Form] Identify:
[tex]\displaystyle 0.4x^2 + 2x - 43 = 0 \\\downarrow \\\begin{aligned}a & = 0.4 \\b & = 2 \\c & = -43 \\\end{aligned}[/tex]

Now that we have our variables from Standard Form, we can use the Quadratic Formula to find which years when there were 45 raccoons present in the area:

[Quadratic Formula] Substitute in variables:
[tex]\displaystyle x=\frac{-2 \pm \sqrt{2^2 - 4(0.4)(-43)}}{2(0.4)}[/tex][Order of Operations] Evaluate:
[tex]\displaystyle \begin{aligned}x & = \frac{-2 \pm \sqrt{2^2 - 4(0.4)(-43)}}{2(0.4)} \\& = \frac{-2 \pm 8.53229}{0.8} \\& = -13.1654, 8.16536\end{aligned}[/tex]

Since time cannot be negative, we can isolate the other root to obtain our final answer:

[tex]\displaystyle\begin{aligned}x & = 8.16536 \ \text{years} \\& \approx \boxed{ 8 \ \text{years} } \\\end{aligned}[/tex]

∴ we have found the approximate amount of years to be 8 years when there were 45 raccoons in the area.

___

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___

Topic: Algebra I

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