it takes john 30minutes to walk 15 blocks to the library as this rate how many blocks can he walk in one minutes

Answer:

D. b = r+z

Step-by-step explanation:

Given the expression b-r = z, we are to solve for b. To do this, we will add 'r' to both sides of the equation as shown;

b-r+r = z+r

Since -r+r = 0, substitute:

b+0 = z+r

b = z+r

Hence the resulting equation when r is added to both sides of the equation is b = z+r

Hence option D is correct

Answer:

Slope = -1

Step-by-step explanation:

[tex](3, -5 ) = (x_1,y_1) \\ (-7,5)=(x_2,y_2)[/tex]

[tex]Slope = \frac{y_2-y_1}{x_2-x_1} [/tex]

Substitute values into the given equation

[tex]slope \: = \frac{5 - ( - 5)}{ - 7 - 3} \\ \\ slope \: = \frac{5 + 5}{ - 7 - 3} \\ \\ [/tex]

[tex]slope \: = \frac{10}{ - 10} \\ slope \: = - 1[/tex]

Answer:

50%

Step-by-step explanation:

650 is one half of the 1,300

That means that 650 is 50% of people who were satiufired out of 1,300

Answer: $37.20

Step-by-step explanation:

24.50+12.70=37.20

Quinn earned a total amount of $37.20 which is the addition of the earnings from dog-sitting and the recycling cans.

Arithmetic operations can also be specified by adding, subtracting, dividing, and multiplying built-in functions.

We have been given that Quinn earned $24.50 for dog-sitting and $12.70 for recycling cans.

We have to determine the total amount he earned.

The total amount is the addition of the earnings from dog-sitting and the recycling cans.

The total amount = earnings from dog-sitting + earnings from the recycling cans.

The total amount = $24.50 + $12.70

The total amount = $37.20

Therefore, he earned a total amount of $37.20.

Learn more about Arithmetic operations here:

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7) 2

8) -3

9) -5/11

10) 2/5

11) -0.5

12) -2

Answer:

The answer is 77 degrees

Answer:

what is the question??

Step-by-step explanation:

Answer:

mr

Step-by-step explanation:

rm x 3/11 ÷ 3/11

Answer:

b=80

Step-by-step explanation:

Answer:

48s plus 12p - 18

Step-by-step explanation:

Answer:

Add 48 + 12 and Subtract the sum from 18 (14+12-18)

Step-by-step explanation:

Sorry if I'm confusing you ;(

8(u-4)=-40

8u-32= -40

8u= -40 + 32

8u= -8

u= -8/8

u= -1

Let's check

8(-1 -4)

-8-32

=-40

So yes u is -1

Answer:

15

Step-by-step explanation:

Answer:

$63.55

Step-by-step explanation:

Taxes are charges paid by individuals and enforced by the government in other to fund government spending and various public expenditures.

The flowers cost $59.95 and tax is 6%.

Tax = 6% of flower cost = 0.06 × $59.95 = $3.6

The  total cost of the flowers is the sum of tax and the cost of flowers, hence:

Total cost of the flowers = $59.95 + $3.6

Total cost of the flowers = $63.55

Answer:

6

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

Since there are two white bars (which equals 4 each) it equals 8.

There are 2 shaded blocks (which equals -2 each) and that amounts to -2.

8 - 2 = 6

Hope I helped :)

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Answer:

2

Step-by-step explanation:

Two negatives makes a positive, - (-6) can be rewritten as +6 or simply just 6.

Proceed to do simple calculations, 6 - 4 = 2.

Answer:

2

Step-by-step explanation:

Multiply the -6 by -, and it equals a positive 6 (When you multiply a negative number by a negative number it becomes a positive).

Finish the equation by subtracting 6 - 4 = 2

I know it might not make sense but trust me, I had to do problems like this.

Hope this helps!

-Jerc

Answer:

If i recall right when two slopes are perpendicular one slope is supposed to be the negative reciprical of the other slope, because of this I think your answer should be B.

Hope this helps!

Answer: 60%

Step-by-step explanation:

Given: Climbing rate at the end of week 1 = 25 steps per minute.

Climbing rate at the end of week 4 =   60 steps per minute

The  percent increase in Maggie's rate of climbing steps from the end of week 1 to the end of week 4 will be :

[tex]\dfrac{\text{Climbing rate after week 4 - Climbing rate after of week 1}}{\text{Climbing rate after week 1}}\times100[/tex]

[tex]=\dfrac{40-25}{25}\times100\\\\=\dfrac{15}{25}\times100=15\times4=60\%[/tex]

Hence, the percent increase in Maggie's rate of climbing steps from the end of week 1 to the end of week 4 = 60%

Answer:

4 +5 _7

Step-by-step explanation:

Answer:

13 cents

Step-by-step explanation:

2.36/18= 0.13

Answer: 6 and 7

Step-by-step explanation:Consider square numbers either side of 44, that is

36 < 44 < 49, then

<  < , that is

6 <  < 7

Answer:

A

Step-by-step explanation:

Answer:

-7.5

Step-by-step explanation:

Whole numbers are natural numbers from 0 to infinity. This does not include decimals or fractions. For example, these numbers are 0, 1, 2, 3, 4...

Integers are whole numbers, but they include negative numbers. So, from negative infinity to positive infinity. This does not include decimals or fractions. For example, these numbers are ... -3, -2, -1, 0, 1, 2, 3 ...

A rational number is any number that can be expressed as a fraction. So, this includes -7.5, as -7.5 can be expressed as -[tex]\frac{15}{2}[/tex].

Therefore the answer is -7.5.

Answer:

A: 10v

B: 5v

Step-by-step explanation:

A: Smallest increment can be found by doing 100/ number of tick marks to 100/ (so 100/10)

B: Uncertainty is smallest increment /2 or 10/2

Answer:

A: 10v

B: 5v

Step-by-step explanation: Hoped this helped :3

Answer:

c = 9

Step-by-step explanation:

2c - 5 = c + 4

Subtract c from both sides

c - 5 = 4

add 5 to both sides

c = 9

Hope this helps:)

Answer:

19 lots

Step-by-step explanation:

i took my exam and it was right

Answer:

To get 2 imaginary solutions, c must be less than -2

Step-by-step explanation:

The general form of the quadratic equation is:

[tex]ax^2+bx+c=0[/tex]

Solve the quadratic equation by using the formula:

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

The equation to solve is:

[tex]-2x^2+4x+c=0[/tex]

In our equation: a=-2, b=4, c=unknown

For the roots to be imaginary, the argument of the square root must be negative, that is:

[tex]b^2-4ac<0[/tex]

Substituting the known values:

[tex]4^2-4(-2)c<0[/tex]

[tex]16+8c<0[/tex]

Subtracting 16:

[tex]8c<-16[/tex]

Solving:

[tex]c<-2[/tex]

Thus, to get 2 imaginary solutions, c must be less than -2

Answer:

He can fit 2 more DVD's on the shelf.

And he'll have about 12 mm of extra space left.

Step-by-step explanation:

40×1.4 = 56cm  This is the length of space the 40 DVD's will take up.

60-56 = 4cm  This is the amount of space left.

4/1.4 = 2.857   the number of DVD's that will fit.

Of course, the decimal represents a partial DVD which is worthless.

Just to be sure, 2×1.4 = 2.8cm OK. But  3×1.4=  4.2cm which is 2mm too much

Answer:

{the question is asking to find the value of x not m}

The value of x is 9°

Step-by-step explanation:

8x-2°+47° = 12x+9°{an exterior angle formed by producing the side of triangle is equal to two non adjacent angle}

or, 8x+45° = 12x+9°

or, 8x-12x = 9°-45°

or, -4x = -36°

or, x = -36°/-4

or, x = 9°

Answer:

This function does not have a vertex because it is a linear function, meaning it will be a straight line.

Step-by-step explanation:

I suggest graphing this on desmos! That site will be your best friend when it comes to graphing, anyway I hope this helped!

Answer:

C. Sin 75,5 = y/12

Step-by-step explanation:

This angle can be calculated using the law of sine:

sin(angle)=opposite cathete/hypothenuse

sin(angle)=wall/ladder

In this exercise we want to calculate the height of the ladder, so the equation is changed afterwards.

sin(angle)=wall/ladder

sin(75,5°)=12ft/y

The height y above the ground in feet is ; (C ) sin 75.5 = y / 12

The ladder, the horizontal ground and the vertical height above the ground form a right angle triangle are ;

The vertical height y = opposite

Length of ladder = hypotenuse

Horizontal ground  = adjacent.

According to trigonometry, sine of an angle is opposite/hypotenuse

sin 75.5 = y/12.

In conclusion, the height y above the ground in feet is sin 75.5 = y / 12.

learn more about right-angled triangle: brainly.com/question/20889881

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Answer:

-6

Step-by-step explanation:

24/-4=-6

Answer:

-6

Step-by-step explanation:

Have a good day <3