a scale on a map shows that 2 inches =25 miles part A how many inches on the map represents 60 miles part B how many miles are represented by 1 over 4 inch on the map

Answer:

95 percent

Step-by-step explanation:

The empirical rule states that approximately 95% of observations will fall within 2 standard deviations of the mean if the population is approximately symmetrical(normal) in distribution.

The interval from 33 to 65 falls within 2 standard deviations of the mean;

49-2(8) = 33

49+2(8) = 65

Thus, 95 percent  of data will fall within the interval from 33 to 65

Answer:

width=6cm, lenth is 7cm

Step-by-step explanation:

Let width of rectangle be x cm

Twice width=2x cm

length=2x-5 cm

Area of the rectangle= L× W =42cm²

(2x-5) × x =42

x(2x-5)=42

2x²-5x-42=0

solving the quadratic equation

x=6cm

width=6cm

length= (2×6)- 5 =7cm

Answer: The correct answer is A.

Step-by-step explanation: Based on Mia’s data, she found that there was a relationship between the length of a persons foot and their shoe size. The only valid conclusion in the options is choice a. The length of a persons foot is a cause of their shoe size, which implies that there is also a correlation between the length of a person’s foot and their shoe size.

Answer:

He used formula C).

Step-by-step explanation:

The correct formula for the slant height is given by

x^2 = 3^2 + 7^2

x =  7.62 cm.

To get 9.2 he must have used

x^2 = 6^2 + 7^2 = 85

as  √85 = about 9.2.

Answer:

the green at the top means i got it right

Step-by-step explanation:

Answer: [tex]\frac{7}{16}hour[/tex]

Step-by-step explanation:

You know that the total time was: 7/8 hour

You also know that they spent 1/2 of the time at the beach.

Therefore, to calculate the time  Zach and his dog spend at the beach (which you can call x) , you must multiply both fractions (7/8 and 1/2).

Then, you obtain the following result:

[tex]x=\frac{7}{8}hour*\frac{1}{2}\\\\x=\frac{7}{16}hour[/tex]

Zach and his dog spent 7/16 of an hour at the beach. This was calculated by multiplying the total walking time of 7/8 of an hour by 1/2, which represents the proportion of the total time spent at the beach.

The question is asking for the amount of time that Zach and his dog spent at the beach. We know that they spent 1/2 of their total walking time, which was 7/8 hour, at the beach. To find this, we simply need to multiply those two fractions together. Multiply the numerators (top numbers) together to get the numerator of the product, and multiply the denominators (bottom numbers) together to get the denominator of the product. 1 * 7 equals 7, and 2 * 8 equals 16, so the product is 7/16 of an hour. This is the amount of time they spent at the beach.

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Answer:

C. 4%

Step-by-step explanation:

Answer:

6g

Step-by-step explanation:

add all G's

The equivalent expression of g + g + g + g + g + g is 6g

The expression is given as:

g + g + g + g + g + g

Factor out g

g + g + g + g + g + g = g(1 + 1 + 1 + 1 + 1 +1)

Evaluate the sum

g + g + g + g + g + g = g * 6

Evaluate the product

g + g + g + g + g + g = 6g

Hence, the equivalent expression of g + g + g + g + g + g is 6g

Read more about equivalent expressions at:

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Answer:

[tex]\large\boxed{\dfrac{16a^4b^2c}{2abc}=8a^3b}[/tex]

Step-by-step explanation:

[tex]\dfrac{16a^4b^2c}{2abc}=\dfrac{16}{2}\cdot\dfrac{a^4}{a}\cdot\dfrac{b^2}{b}\cdot\dfrac{c}{c}=8a^3b[/tex]

Answer:

Step-by-step explanation:

[tex]\text{The formula of an area of a circle:}\\\\A=\pi r^2\\\\r-\text{radius}\\\\\text{We have}\ A=4\pi x^2+12\pi x+9\pi=(4x^2+12x+9)\pi=(2^2x^2+2(2x)(3)+3^2)\pi\\\\=\bigg((2x)^2+2(2x)(3)+3^2\bigg)\pi\qquad\text{use}\ (a+b)^2=a^2+2ab+b^2\\\\=(2x+3)^2\pi\to r=2x+3[/tex]

first you have to add the -4 to the -2 and you get 2. so 2x=2 then you divide 2 by 2x and get x=1

Answer:64y

Step-by-step explanation:42+22 then just put the y at the end

Answer:

Step-by-step explanation:

(2x-1)²=x²+4²

4x²-4x+1=x²+16

3x²-4x-15=0

a=3   b=-4   c= -15

D=b²-4ac

=16-4*3*(-15)=196

x1=-b+√D/2a=4+14/6=3

x2=-b-√D/2a=4-14/6=-10/6=-5/3

Answer:

x = 3

Step-by-step explanation:

Using Pythagoras' theorem on the right triangle, then

(2x - 1)² = 4² + x² ← expand parenthesis on the left side and simplify

4x² - 4x + 1 = 16 + x² ( subtract 16 + x² from both sides )

3x² - 4x - 15 = 0 ← in standard form

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term

product = 3 × - 15 = - 45 and sum = - 4

The factors are - 9 and + 5

Use these factors to split the x- term

3x² - 9x + 5x - 15 = 0 ( factor the first/second and third/fourth terms )

3x(x - 3) + 5(x - 3) ← factor out (x - 3)

(x - 3)(3x + 5) = 0

Equate each factor to zero and solve for x

x - 3 = 0 ⇒ x = 3

3x + 5 = 0 ⇒ 3x = - 5 ⇒ x = - [tex]\frac{5}{3}[/tex]

However, x must be greater than zero

Hence x = 3 cm

Answer:

212.5

Step-by-step explanation:

10=85

212.5=25

Gavin can drive 8.5 miles with 1 gallon of gas. Therefore, he can drive 212.5 miles with 25 gallons of gas.

The question asks how many miles Gavin can drive on 25 gallons of gas, given that he has driven 85 miles on 10 gallons of gas. This requires the use of proportions to calculate. First, you find out how many miles Gavin can drive on 1 gallon of gas, which is 85 miles / 10 gallons = 8.5 miles/gallon. Then, using this value, we can multiply it by 25 gallons to get the total miles Gavin can drive on 25 gallons, which is 8.5 miles/gallon * 25 gallons = 212.5 miles. Therefore, Gavin can drive 212.5 miles on 25 gallons of gas.

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8.5 would be more consistent

Answer:

4.2 would be more consistent.

Step-by-step explanation:

Answer:

X=56/9

Step-by-step explanation:

7x+2(x-5)46

7x+2x-10=46

9x-10=46

9x=46+10

9x=56

Answer:

3x^2 + 6y - 9x +4

Step-by-step explanation:

Answer: 4x-5

Step-by-step explanation: g(f(x))

g(4x-3)

4x-3-2

4x-5

Answer:Hmmmmmmm

Step-by-step explanation:

i really hope i can help

Since distance is equal to rate times time:

Let x= the time traveled at 3 km/h

Let y= the time traveled at 4 km/h

We can say that

3x+4y=52

Or that three (kilometers) times the time traveled at 3 kilometers an hour plus 4 (kilometers) times the time traveled at 4 kilometers an hour is equal to 52; the total distance traveled.

Likewise, we can see that:

x+y=15

Because x, the number of hours traveled at 3 km/h added to y, the time traveled at 4 km/h is equal to 15; the total time traveled.

Now, I'll solve by substitution.

x=-y+15

Substitute that into the other equation.

3(-y+15) + 4y = 52

Distribute

-3y + 45 + 4y = 52

Combine like terms

y + 45 = 52

Minus 45 from both sides

y = 7

So Fredrick traveled at 4 km/h for 7 hours.

Now, to find the other value, substitute the value of y into one of the original equations.

x + 7 = 15

Minus 7

x = 8

So

Time traveled at 4 km/h = 7 hours

Time traveled at 3 km/h = 8 hoursSince distance is equal to rate times time:

Let x= the time traveled at 3 km/h

Let y= the time traveled at 4 km/h

We can say that

3x+4y=52

Or that three (kilometers) times the time traveled at 3 kilometers an hour plus 4 (kilometers) times the time traveled at 4 kilometers an hour is equal to 52; the total distance traveled.

Likewise, we can see that:

x+y=15

Because x, the number of hours traveled at 3 km/h added to y, the time traveled at 4 km/h is equal to 15; the total time traveled.

Now, I'll solve by substitution.

x=-y+15

Substitute that into the other equation.

3(-y+15) + 4y = 52

Distribute

-3y + 45 + 4y = 52

Combine like terms

y + 45 = 52

Minus 45 from both sides

y = 7

So Fredrick traveled at 4 km/h for 7 hours.

Now, to find the other value, substitute the value of y into one of the original equations.

x + 7 = 15

Minus 7

x = 8

So

Time traveled at 4 km/h = 7 hours

Time traveled at 3 km/h = 8 hours

Answer:

are perpendicular

Yes, it is perpendicular

Parallel is when you have two lines that do not intersect

A ray is a line that has one definite starting point and no obvious end point. (Stars with a point and "ends" with an arrow, meaning that it goes on "forever")

A line is just one specific line

When you have perpendicular, that is when two lines cross each other forming a right angle as you may now know

Hope this helps :)

Answer:

Step-by-step explanation:

Zucchini    = 'z' = 6

Beans = 'b' = 3

Corn = 'c' = 7

beets = 't' = 4

Total produce = 20 bushels of veggies.

z = 6/20 = 3/10                 % = 3/10*100 = 30%

b = 3/20                            % = 3/20 * 100 = 15%

c = 7/20                             % = 7/20 *100 = 35%

t = 4/20 = 1/5                     % = 1/5 * 100 = 20%

Total                                                          100%

[tex] - {x}^{2} + 10x + 5 \\ = - {x}^{2} + 10x - 25 + 5 + 25 \\ = - ( {x}^{2} - 10x + 25) + 30 \\ = \underbrace{ - {(x - 5)}^{2}}_{\leqslant 0} + 30 \\ \Rightarrow - {(x - 5)}^{2} + 30 \leqslant 30 \\ \Rightarrow Maximum \: value \: is \: 30 \: when \: x = 5[/tex]

The area of the pattern is calculated by finding the area of the circle, semicircles, and quarter-circles separately and then adding them together. The area of the pattern is approximately 1005.31 cm^2.

To find the area of the pattern, we need to calculate the area of the circle, semicircles, and quarter-circles separately. The area of a circle is found using the formula A = πr^2, where r is the radius. So, the area of the circle is A = π(8)^2 = 64π cm^2. The area of a semicircle is half the area of a circle, so it is 32π cm^2. The area of a quarter-circle is a quarter of the area of a circle, which is 16π cm^2. To find the total area of the pattern, we add the areas of the circle, semicircles, and quarter-circles: 64π + 4(32π) + 8(16π) = 64π + 128π + 128π = 320π cm^2. Rounding to the nearest hundredth, the total area of the pattern is approximately 1005.31 cm^2.

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Finding the areas of the circles, semicircles, and quarter-circles separately and combining them together yields the pattern's overall area. The pattern's estimated area is 1005.31 cm^2.

To determine the area of the pattern, individual areas of the circle, semicircles, and quarter-circles are computed separately.

Utilizing the formula

A = πr^2

for a circle with a radius (r) of 8 cm, the circle's area is 64π cm^2.

The semicircles, constituting half the circle's area, total 32π cm^2 each.

Quarter-circles, representing a quarter of the circle's area, contribute 16π cm^2 each.

Combining these, the pattern's total area is calculated as 64π + 4(32π) + 8(16π) = 320π cm^2.

Rounded to the nearest hundredth, the total area is approximately 1005.31 cm^2.

This comprehensive approach ensures the accurate summation of all constituent shapes within the intricate pattern.

Figure 1: find the surface area: [(3 x 2 1/4) x 2] for the top and bottom. [(4 1/2 x 2 1/4)x 2] for the left and right squares. [(3 x 4 1/2) x 2] for the front and back. Which should be 20 1/4 + 27 + 13 1/2 = 60 3/4 m. The area is 4 1/2 x 3 x 2 1/4 = 30 3/4 m.

Answer:

6 rows

Step-by-step explanation:

How many boxes will be in the row ?

5+1=6

five rows

one more added to that same row

add u get six

Answer:

6 boxes.

Step-by-step explanation:

If another row is added to the bottom of the stack, how many boxes will be in the row. The stack consists of five rows of boxes that are all the same size.

5 + 1 = 6 boxes.

Answer:

98

Step-by-step explanation:

Substitute the given values into the expression

u + xy

= 18 + (10 × 8 ) ← multiply before adding

= 18 + 80

= 98

The answer is: [tex]f(t)=-4t^{2}+t+3[/tex]

Since we are given a quadratic function, we need to write it using the standard form of quadratic function (parabola).

The given function is:

[tex]f(t)=3-2t.2t=+t[/tex]

The standard form of a parabola is:

[tex]f(t)=a^{2}+bx+c[/tex]

Where,

a is equal to the quadratic variable coefficient

b is equal to the linear variable coefficient

c is the constant number

So, writing the function in the standard form will be:

[tex]f(t)=3-2t*2t+t=3-4t^{2}+t=-4t^{2}+t+3[/tex]

[tex]f(t)=-4t^{2}+t+3[/tex]

Where,

[tex]a=-4\\b=1\\c=3[/tex]

Have a nice day!

the correct answer is the 3rd table.

Answer:

The answer is 15 m.

Step-by-step explanation:

Answer:

b = 15

Step-by-step explanation:

Using Pythagoras' theorem on the right triangle, that is

20² + b² = 25²

400 + b² = 625 ( subtract 400 from both sides )

b² = 225 ( take the square root of both sides )

b = [tex]\sqrt{225}[/tex] = 15

Answer:

6 feet 4 inches

Step-by-step explanation:

Step-by-step explanation:

3 FEET 2 INCHES These are not the same! Do not multiply

Each foot is 12 inches. So 3 times 12 (3 feet) is 36, add the extra 2 inches for 38 inches.

38 plus 32 equals 70 total inches. NOw we put it back into feet.

70 divided by 12 is 5, remainder 10.

So Valerie's sister will be 5 feet 10 inches (G)