Hi there please help me
On question two I’m not understanding why they put the brackets in when there was no brackets in the equation they gave me to solve

Answer:

63cm

3 x 21 = 63

Answer: 63 cm

Step-by-step explanation: For every one cm deep, there is a further scale of 21 cm more. If the pond is 3 cm deep, then the scale would be 21 * 3, which is equivalent to 63.

Answer: x = 1.408

Step-by-step explanation:

We can first start by cross multiplying:

7.5x*5 = 4.8*11

We can now evaluate the decimals:

37.5x = 52.8

Now we can divide both sides by 37.5:

x = 1.408

Answer:

the answer is C.

Step-by-step explanation:

Answer C.

Answer:

53

Step-by-step explanation:

3x+7

3 • (-20)+7

-60+7 = 53

You're welcome !

The solution to the given algebraic equation is [tex]\mathbf{z = \dfrac{59+pd}{(p+2)}}[/tex]

Algebraic equations are mathematical expressions with variables, coefficients, and arithmetic operations. To solve algebraic expressions with two or more variables, the required variable to be solved must be the subject of the formula:

From the given information, we have:

[tex]\mathbf{-p\cdot(d+z) = -2z+59}[/tex]

-pd +pz = -2z + 59

pz + 2z = 59 + pd

z(p+2) = 59 + pd

[tex]\mathbf{z = \dfrac{59+pd}{(p+2)}}[/tex]

Learn more about solving algebraic equations here:

https://brainly.com/question/4344214

#SPJ1

Step-by-step explanation:

I hope this helps.........

Answer:

70 degrees

Step-by-step explanation:

Answer: Angles 4 and 5

Step-by-step explanation:

Supplementary angles are angles that add up to 180. The only angle pairs the add up to 180 (you can tell by seeing if two angles are the only two on a straight line) are angles 4 and 5, and angles 3 and 4. Angles 3 and 4 isn’t an option, so it’s 4 and 5.

Answer:

i believe that its angle 4 and 5 since they would sum up to 180 degrees

Step-by-step explanation:

Answer:

4 feet of ribbon ÷ 1/3 foot riboon = 12 pockets

Answer:

2.5 hours

Step-by-step explanation:

If u times 5.50 x 2.5 = 13.75

So 2.5 hours is basically 2h 30min

Answer:

[tex] \frac{9}{4} [/tex]

Step-by-step explanation:

slope = rise / run

slope = 9 / 4

Answer:

[tex]x < -20[/tex]

Step-by-step explanation:

Given the following question:

[tex]x+8 < -12[/tex]

In order to solve one step inequalities, we solve how we would normally solve a one-step equation and then graph the answer on a number line.

[tex]x+8 < -12[/tex]
[tex]8-8=0[/tex]
[tex]-12-8=-20[/tex]
[tex]x < -20[/tex]

Now to graph the inequality on a number line, keep a few things in mind:
. x is less than -20 which means the line would go the opposite way of the negative 20.
. < is a greater than sign, not a greater than or equal sign (≤) so the number line will have a open point.
. The number line will have a point on -20.

Hope this helps.

Answer:

C) approximately 66 cars per year

Step-by-step explanation:

From 1983 to 2006, that is 2006 - 1983 = 23 (years).
The car sales rose from 2673 to 4194, that is 4194 - 2673 = 1521 (cars)

So the average rate of change is : 1521 : 23 = approx. 66 cars per year

:D hope it helps

Answer:

Step-by-step explanation:

chickens x

goats y

4x+ 2y=120           2y=120-4x/ 2        y= 60- 2x

x+y= 37                  x+y=37                x+ 60- 2x= 37

y= 60-2x

x= 23

y= 60 - 2*23            y= 14

x= 23                        x=23

John found a stray cat in the alley. The cat looked hungry and sad, so John decided to feed the cat. He brought her home and fed her some milk. The milk quenched the cat’s thirst. The cat seemed very tranquil after that.

Tranquil is an adjective that means that someone or something is peaceful or calm. Quenched is a verb which means to satisfy one's thirst by drinking something. It is the past tense of quench. Alley is a noun which means a long and narrow passageway.

To learn more about quench, please check: https://brainly.com/question/8365654

Answer:

A monomial has just one term. For example, 4x2 .Remember that a term contains both the variable(s) and its coefficient (the number in front of it.) So the is just one term.

A binomial has two terms. For example: 5x2 -4x

A trinomial has three terms. For example: 3y2+5y-2

Step-by-step explanation:

Answer:

42 minutes

Step-by-step explanation:

70% x T = 98

7T/10 = 98

7T = 980

T = 140 mins

140 - 98

= 42 minutes

Answer: 42 mins

Step-by-step explanation: 70% / 7 x 3 = 98 / 7 x 3 = 14 x 3 = 42 minsDivide 70% by 7 to find 10%. Subtract 70 from 100 equals 30, so multiply 10 by 3 to find the remaining 30%. 

Answer:

the answer is for the question you are asking is A) Atom

In a triangle, the 3 angles add up to 180 degrees

=> Value of x = 180 - 62 - 15 = 103

y is supplementary to x (y + x = 180), so the value of y = 180 - 103 = 77

z = 180 - 60 - 77 = 43

Answer:

Step-by-step explanation:

These are variations of a "mixture problem." A reasonable approach to the solution is to choose a variable to represent the quantity of the item contributing most to the mix. Then the quantity of the other item is the difference from the total quantity and the variable value. The equation you write will add up the values of the different quantities to get the total value.

__

Let x represent the amount invested at 13%. Then 10000-x is the amount invested at 10.5%, and the total interest earned is ...

  0.13x +0.105(10000 -x) = 1210

  0.025x +1050 = 1210 . . . . . eliminate parentheses

  0.025x = 160 . . . . . . . . . subtract the constant on the left

  x = 6400 . . . . . . . . . . divide by the coefficient of the variable

  10000 -x = 3600

Anthony invested $6400 at 13% and $3600 at 10.5%.

__

Let x represent the number of burgers sold. Then the number of hot dogs sold is 173-x, and the total revenue is ...

  3x +2(173 -x) = 437

  x +346 = 437 . . . . . . . . . eliminate parentheses

  x = 91 . . . . . . . . . . . . subtract the constant on the left

  173 -x = 82

82 hot dogs and 91 hamburgers were sold.

_____

Additional comment

You can solve these by writing two equations in two unknowns. You would let the variables represent the quantities of the two contributors. You would have one equation for the total quantity, and another equation for the total value.

These equations can be solved in any of the usual ways. If you solve by "substitution," where you substitute for the quantity of lower value, the equation you have as a result will match the equation described above.

The reason for keeping the variable representing the larger contributor is that its coefficient ends up positive as the solution progresses. That tends to make the arithmetic a little simpler and to reduce errors.

Answer:

The cost is $45 per hour.

Step-by-step explanation:

(h = hours)

1. The equation is 4.5h + 155 = 357.5.

2. Subtract 155 from both sides of the equal sign. The equation is 4.5h = 202.5.

3. Divide both sides by 4.5. The answer is h = 45.

Answer:

56 divided by 8

Step-by-step explanation:

7 times 8 equals 56

therefore 56 divided by 8 equals 7  ANSWER

and 56 divided by 7 is 8

Fact families

Step-by-step explanation:

= 4+( 9/12 + 8/12)

The number of particles the compound consists of is 7.65 × 10²⁴.

It is given that

Number of moles n = 12.7

As we know the formula for the number of particles:

N=n× Nₐ

Where Nₐ is Avogadro's Number, n is the number of moles.

Avogadro's Number is the number of units in one mole of any substance (defined as its molecular weight in grams), equal to 6.02214076 × 10²³.

So, the number of particles:

N= 12.7 × 6.02214076 × 10²³.

N=7.65 × 10²⁴

Therefore, the number of particles the compound consists of is 7.65 × 10²⁴.

To get more about the Avogadro's number refer to the link,

https://brainly.com/question/1581342

Answer:

1/2 is the answer

Step-by-step explanation:

Answer:

1/2 is the anwser