Can someone help me solve these problems?

The percent error of her estimate relative to the time it actually took is approximately 5.9%

Error = Estimated time to construct the shed - Actual time taken to build the shed

= 18 hours - 17 hours

= 1 hour

Percent error = error / actual time × 100

= 1/17 × 100

= 0.058823529411764 × 100

= 5.882352941176470

Approximately,

5.9%

Consequently, the percent error of Keiko estimation and actual time is 5.9%

Complete question:

Keiko estimated that it would take her 18 hours to build a shed for her 12.5 backyard. It only took her 17 hours. What is the percent error of her estimate relative to the time it actually took?

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The value of the car zero km is given by the expression x = 60000.

LET ME EXPLAIN SOMETHING:

An algebraic expression is one that has several operations between numbers and letters (unknowns): addition, multiplication, subtraction, division, potentiation, rooting, etc.

LET'S GO TO THE SOLUTION:

Let x be the initial value of the car, we know that it depreciates 10% when leaving the agency and another 5% after one year. If the value of this car is $51,300.00 after 1 year, we will have to:

When you leave the agency, your value decreases by 10%:

After a year, its value decreases by 5%:

0.855x = 51300

x = 60000

For more about the algebraic expression follow the link below.

Answer:

(4, 0)

Step-by-step explanation:

7x - 10y = 28

7x - 3y = 28

------------------

(7x - 10y = 28) × -1

-7x + 10y = -28

--------------------------

-7x + 10y = -28

7x - 3y = 28

--------------------------

           7y = 0

             y = 0

7x - 10y = 28

7x - 10(0) = 28

7x = 28

÷7   ÷7

----------------

x = 4

(x, y)

(4, 0)

I hope this helps!

x-intercepts for 7x - 10y = 28:  

(4,0)

y-intercepts:

(0, -14/5)

x-intercepts for 7x - 3y = 28:

(4, 0)

y-intercepts:

(0, -28/3)

I hope my answer helped you! If you need more information or help, comment down below and I will be sure to respond if I am online. Have a wonderful rest of your day!

The perimeter of the figure described in the question is 42.84cm

The figure is defined by a half circle is joined to an equilateral triangle with side lengths of 12 units.

So the perimeter of the figure will be equal to half of the circumference of the triangle plus the length of the two exposed sides of the triangle.

The diameter of the circle will also be 12 units, remember that the circumference of a circle of diameter D is:

C = 3.14*D

In this case, the circumference of half circle is:

C = 3.14*D/2

Replacing the value of the diameter:

C = 3.14*12cm/2 = 18.84cm

Adding the two sides of the triangle we get the perimeter.

P = 18.84cm + 2*12cm = 42.84cm

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Answer:

Step-by-step explanation:

You dont even need to look at the slope. For it to pass through (0,7) answer d with the +7 at the end is the only right answer

your welcome

D

Answer:

? where are the questions i will edit when answer arrive.

Step-by-step explanation:

The given statement would be "false".

A quick ratio compares the company's most liquid assets to a short-term commitment. The quick ratio is computed by adding the cash and equivalents of the firm to its short-term investments and account receivable. Divide the figure by the firm's existing liabilities.

As per the question, there is no reason to believe that if a company sold any goods on credit rather than cash, its current or quick ratio would change that would be false.

Thus, the given statement would be "false".

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The question seems to be incomplete the correct question would be:

Find the statement true or false.

If a firm sold some inventory on credit as opposed to cash, there is no reason to think that either its current or quick ratio would change. (T/F)

Answer:

<P = 78.625°

Step-by-step explanation:

All of the angles in a triangle add up to 180.

<R + <Q + <P = 180

We can use x for <P and <Q, as they represent the same value because they are congruent.

<R + x + x = 180

Now, we want to substitute known values in and work backwards to find out what angle <P and <Q are.

2x + <R = 180

Put 22.75 in for <R.

2x + 22.75 = 180

Subtract on both sides.

2x = 157.25

Divide 2 on both sides to isolate x

x = 78.625

Since x represents <P and <Q, that means they are both 78.625 degrees each.

<P = 78.625

Answer:

10.5 cm

Step-by-step explanation:

YZ corresponds to TU

YZ:TU = 9:3 = 3:1

XY corresponds to ST

ST = 3.5 cm

XY:ST = 3:1

XY/ST = 3/1

XY/3.5 cm = 3

XY = 10.5 cm

From the solution to the given inequality, the correction representations are -6x + 15 < 10 - 5x and a number line from -3 to 7, with an open circle at 5 and an arrow pointing to the right.

From the question, we are to determine the correct representations of the given inequality

The given inequality is

-3(2x - 5) < 5(2 - x)

To determine the correct representation, we will solve the inequality

Solving the inequality

-3(2x - 5) < 5(2 - x)

Clear the parentheses by applying the distributive property

-6x + 15 < 10 - 5x

Add 6x to both sides

-6x + 6x + 15 < 10 - 5x + 6x

15 < 10 + x

Subtract 10 from both sides

15 - 10 < 10 - 10 + x

5 < x

Therefore,

x > 5

Hence, the correction representations are -6x + 15 < 10 - 5x and the number for x > 5

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The converse of the conditional statement is “If Halloween is in September then the capital of Virginia is Richmond”.

The inverse of the conditional statement is “If Halloween is not in September then the capital of Virginia is Richmond”

The contrapositive of the conditional statement is “If the capital of Virginia is not Richmond, then Halloween is in not September”.

The conditional statement is defined as the two fundamental components that make up a conditional statement Hypothesis (if) and Conclusion (then).

The given conditional statement is "If the capital of Virginia is Richmond, then Halloween is in September"

The converse of the conditional statement is “If Halloween is in September then the capital of Virginia is Richmond”.

The inverse of the conditional statement is “If Halloween is not in September then the capital of Virginia is Richmond”

The contrapositive of the conditional statement is “If the capital of Virginia is not Richmond, then Halloween is in not September”.

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Answer:

d) 189.3 in²

Step-by-step explanation:

Area of rectangle is,

→ w × l

→ 10 × 15

→ 150 in²

Area of semi circle is,

→ (1/2)πr²

→ (1/2) × 3.14 × (5)²

→ 1.57 × 25

→ 39.3 in²

Now the total area will be,

→ 150 + 39

→ 189.3 in²

Thus, total area is 189.3 in².

Answer:

-1/30

Step-by-step explanation:

add the two numbers and divide by 2

Answer:

f⁻¹(x)= 9x + 18

Step-by-step explanation:

1. Replace f(x) with x, and x with y:  x=1/9y-2

2. Solve for y:

   x=1/9y-2

   9x=y-18

   9x+18=y

3. Replace y in step 2 with f⁻¹(x)

Answer:

The answer is 2-14x or

-12x

Answer:

B

Step-by-step explanation:

A is a reflection across the y-axis.

B is the result of a rotation around the origin either by 90° counterclockwise, or by 270° clockwise.

C is a reflection across the x-axis.

D is a translation (shift) by -5 to the left.

The required leaves values for the given stems are calculated below.

A plot where every information esteem is parted into a "leaf" (typically the last digit) and a "stem" (different digits). For instance "32" is parted into "3" (stem) and "2" (leaf). The "stem" values are recorded down, and the "leaf" values are recorded close to them.

For example , 42, 34, 48, and so on.

Here 42 and 48 qualities will be written in stem 4 as their most memorable digit is 4, while 2 and 8 will be placed in the leaf side.

Likewise, 3 will be the stem, and 4 will be the leaf for esteem 34.

4| 2, 8

3| 4

65​, 40​, 47​, 47​, 33​, 55​, 44​, 49​, 46​, 22​, 58​, 65​, 56​, 41​, 63​, 65​, 54​, 42​, 58​, 29​, 39​, 66 ​, 49​, 42​, 34​, 36​, 42​, 35​, 21​, 44​, 61​, 35​, 33​, 42​, 27​, 30​, 46​, 33​, 35​, 58.

As given in the question that the stem and Leaves are to be separated by a hyphen.

Stem-and-Leaf plot 6 -  5, 5, 3, 5, 6, 1

5 -  5, 8, 6, 4, 8, 8

4 -  0, 7, 7, 4, 9, 6, 1, 2, 9, 2, 2, 4, 2, 6

3 -  3, 9, 4, 6, 5, 5, 3, 0, 3, 5

2 -  2, 9, 1, 7

As we can see above there are 5 stems, where stem 6 has 6 leaves, stem 5 has 6 leaves, stem 4 has 14 leaves, stem 3 has 10 leaves, and stem 2 has 4 leaves.

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Answer:

64

Step-by-step explanation:

Since one of the 3 identical factors is 4, then the number is 4×4×4, or 4³

The percentage of time that Emerson actually hit the ball is given by the following option:

C. 68%.

A percentage is calculated applying proportions, as it is a fraction of the total amount, obtained as the division of the number of desired outcomes by the number of total outcomes and multiplied by 100%.

Hence the outcomes in this problem are given as follows:

Then the number of desired outcomes is obtained as follows:

(90 - 30) + (120 - 40) + (140 - 42) = 238.

The number of total outcomes is obtained as follows:

90 + 120 + 140 = 350.

Then the percentage is given as follows:

P = 238/350 x 100% = 68%.

Meaning that the correct option is given by option C.

The problem is:

In Game 1, Emerson struck out 30 times in 90 times at bat. In Game 2, he struck out 40 times in 120 times at bat. In Game 3, Emerson struck out 42 times in 140 times at bat. What percentage of times at bat did Emerson actually hit the ball? a. 39% b. 85% c. 68% d. 45%​

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The coordinates of the points are given as follows:

The coordinates of the fourth vertex are of:

(4,1).

The notation of an ordered pair is given as follows:

(x-coordinate,y-coordinate).

The x-coordinate is the horizontal movement, defined as follows:

The y-coordinate is the vertical movement, defined as follows:

The equivalent sides on a rectangle are congruent, hence the equivalent sides are:

TZ and PM.

Hence the missing coordinate M is:

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Answer:

Option: A is the correct answer.

Step-by-step explanation:

Clearly from the graph we could observe that the graph is a decay exponential function as the graph of the function is decreasing with the increasing value of x.

Hence, the rate has to be less than 1.

So, option: B and D are ruled out as they represent a growth exponential function.

Also from the graph given in the question we could observe that when x=0 the value of y is:

y=4

So, the exponential function that is represented by the graph is:

Answer: true

Step-by-step explanation:

[tex](\stackrel{x_1}{-2}~,~\stackrel{y_1}{8})\hspace{10em} \stackrel{slope}{m} ~=~ 1 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{8}=\stackrel{m}{ 1}(x-\stackrel{x_1}{(-2)}) \implies y -8= 1 (x +2) \\\\\\ y-8=x+2\implies {\Large \begin{array}{llll} y=x+10 \end{array}}[/tex]

Answer: The answer is y=x+10

Answer:

1.  Line, Point, Rotational

2. Line, Rotational

3. None

4. Rotational

Step-by-step explanation:

Definitions

Figure 1

[tex]\boxed{\checkmark}\;\;\;\sf Line[/tex]

[tex]\boxed{\checkmark}\;\;\;\sf Point[/tex]

[tex]\boxed{\checkmark}\;\;\;\sf Rotational[/tex]

[tex]\boxed{\phantom{\checkmark}}\;\;\;\sf None[/tex]

This figure has vertical and horizontal lines of symmetry.

As this figure has point symmetry, it also has rotational symmetry of 180°.

Figure 2

[tex]\boxed{\checkmark}\;\;\;\sf Line[/tex]

[tex]\boxed{\phantom{\checkmark}}\;\;\;\sf Point[/tex]

[tex]\boxed{\checkmark}\;\;\;\sf Rotational[/tex]

[tex]\boxed{\phantom{\checkmark}}\;\;\;\sf None[/tex]

This figure has a vertical line of symmetry.

This figure does not have point symmetry as when the figure is rotated 180°, it no longer appears the same as the original figure.

This figure has rotational symmetry of 120°.

Figure 3

[tex]\boxed{\phantom{\checkmark}}\;\;\;\sf Line[/tex]

[tex]\boxed{\phantom{\checkmark}}\;\;\;\sf Point[/tex]

[tex]\boxed{\phantom{\checkmark}}\;\;\;\sf Rotational[/tex]

[tex]\boxed{\checkmark}\;\;\;\sf None[/tex]

It's difficult to tell as the provided picture of this figure is not flat, but it appears not to have any symmetry.

Figure 4

[tex]\boxed{\phantom{\checkmark}}\;\;\;\sf Line[/tex]

[tex]\boxed{\phantom{\checkmark}}\;\;\;\sf Point[/tex]

[tex]\boxed{\checkmark}\;\;\;\sf Rotational[/tex]

[tex]\boxed{\phantom{\checkmark}}\;\;\;\sf None[/tex]

This figure has no line symmetry.

This figure does not have point symmetry as when the figure is rotated 180°, it no longer appears the same as the original figure.

This figure has rotational symmetry of 120°.

Answer:

no, it isn't symmetrical

Step-by-step explanation:

give me brainliest pls

Answer:

I think about 9 days

(I'm pretty sure, but don't get mad if it's wrong