Derek used 12 pencils during school week. He now has 86 pencils How many pencils did he have at the beginning of the school week

Answers

Answer 1

Answer:98

Step-by-step explanation:

Do mental math if she used 12 and now has 86 then all you do is add 12 and 86 and you get 98


Related Questions

please helpp please
im in deep need to learn this
please

Answers

Answer:

C

Step-by-step explanation:

i think because the bottom of the triangles are the denominators and the x is the numerator

The ferris wheel with a diameter of 150 feet at the fair is out of control and is moving at 60 degrees per second. How many miles per hour is someone moving as it spins out of control?

*There are 5,280 feet in a mile.

Answers

Answer:

Step-by-step explanation:

Negative thirteen decreased by 3 times a number

Answers

Answer:

-13-x(3)

Step-by-step explanation:

Hope this helps :)

The expression in the mathematical form will be 3x + 13.

What is Algebra?

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

PEMDAS rule means for the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.

Negative thirteen decreased by 3 times a number. Then the expression in the mathematical form is given as,

Let x be the number. Then the expression will be

⇒ 3x - (-13)

⇒ 3x + 13

The expression in the mathematical form will be 3x + 13.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2

please help me with this

a . 18

b . 16

c . 12

d . 9

Answers

It would have the be B. 16

Gentry Industries has the following information about maintenance costs in the past six months.
Month Machine _Hours Amount
January 200 $2,800
February 350 3,000
March 450 4,000
April 500 5,000
May 600 5,200
June 580 5,800
How much would Gentry pay if maintenance machine hours are 550?

Answers

Answer:

Total cost= $5,425

Step-by-step explanation:

Giving the following information:

Month Machine _Hours Amount

January 200 $2,800

February 350 3,000

March 450 4,000

April 500 5,000

May 600 5,200

June 580 5,800

First, we need to calculate the fixed and variable costs. To do it, we will use the high-low method:

Variable cost per unit= (Highest activity cost - Lowest activity cost)/ (Highest activity units - Lowest activity units)

Variable cost per unit= (5,800 - 2,800) / (600 - 200)

Variable cost per unit= $7.5 per hour

Fixed costs= Highest activity cost - (Variable cost per unit * HAU)

Fixed costs= 5,800 - (7.5*600)

Fixed costs= $1,300

Fixed costs= LAC - (Variable cost per unit* LAU)

Fixed costs= 2,800 - (7.5*200)

Fixed costs= $1,300

Now, we can determine the total cost for 550 hours:

Total cost= 1,300 + 7.5*550

Total cost= $5,425

Plz help me with this I’m stuck

Answers

Answer:

I belive the answer to this is D or A

Step-by-step explanation:

But I strongly think its A

Answer:

The answer is A

Help. I don’t understand this

Answers

i don’t know all of them but the last one is correct.

PLEASE HELP I WILL MARK BRAINLIST IF YOU ANSWER CORRECTLY OR IF YOU JUST TRY BUT IF YOU ANSWER FOR THE POINTS IM REPORTING btw I CAN tell and help on both if you can

Answers

Answer:

the first answer is 104 square units

I forgot how to answer the surface area for the second prism sorry.

Step-by-step explanation:

118.4 divided by 6.4 STEP BY STEP EXPLANATION PLS.

Answers

Answer: 18.5

Step-by-step explanation: Steps are down.

1. Move the decimal point all the way to the right.

2. Put a decimal point in the quotient exactly as the one in the dividend.

3. Divide the tens column by the divisor.

4. Multiply the divisor by the quotient.

5. Subtract the product by the divisor.

6. Bring down what's left, then repeat.

Please help at least do 3 questions please Don’t guess (can be more than one)

Answers

24 56 78 12 13 9 45 17 67 65 4 8

In which equation is the product greater than 3?

A. 3/4x3

B. 3/2x3

C. 1/12x3

D. 9/10x3

Answers

Answer:

B

Step-by-step explanation:

all you need to do for this is multiply the numerator by the 3.

3/4 times 3 = 9/4-  thats not more than 3

3/2 times 3 = 9/2 - thats more than 3  

1/12 times 3 = 3/12-  thats  not more than 3

9/10 times 3 = 27/10 thats  not more than 3

could you give me brainliest I need to complete this level

What is the area of the shaded region?

Answers

Answer:

66ft^2

Step-by-step explanation:

It can be located at the center of a polygon or at the sides of the polygon

Your teacher gave you 5 of a bag of candy, but she only
gave your friend of a bag.
How much more of the bag did your teacher give you than
your friend?

Answers

Think of it as it being 5 - 1 which equals 4. So you would have four more than her
you have 4 more bags than your friend because 5-1 is 4 :3 hope this helped


A biker rode for 2.5 hr. at an average rate of 12 mi./hr. Find the distance traveled.

Answers

Answer:

30 miles

Step-by-step explanation:

12x2.5=30

2(3x + 2) = 2x - 1+x.

Answers

Answer:

x = -5/3

Step-by-step explanation:

Hope this helps!

Best of luck!♥

6x+4=3x-1
-4
6x=3x-5
-3x both sides
combine like terms
3x=-5
/3
x=-5/3

what is the correct equation for the graph?​

Answers

it’s A

STEP BY STEP:
It’s A hope this helps

You take a 325 milligram dosage of ibuprofen. During each subsequent hour, the amount of medication in
your bloodstream decreases by about 29% each hour

Answers

Answer:

oka so now what

Step-by-step explanation:

In a cheese factory, 4.5-kg blocks of cheese are cut manually. For a large number of blocks, the standard deviation of the cutting process is measured and found to be 0.10 kg. The measurement was done with a scale with an accuracy of 1.5% of the full scale of 12 kg. Calculate the total uncertainty of the weight of the blocks of cheese at a 95 % confidence level.

Answers

Answer:

0.2690 kg

Step-by-step explanation:

Given that:

For cutting a 4.5 kg block of cheese; the standard deviation:

[tex]S_x = 0.1 \ kg[/tex]

For a large no of blocks,  at 95% confidence level;

Using the t table; where the degree of freedom is infinity or > 30

t-distribution (t) = 2

[tex]P_x = tS_x[/tex]

[tex]P_x = 2 \times 0.1[/tex]

[tex]P_x = 0.2 \ kg[/tex]

The system uncertainty as a result of the accuracy [tex]B_x[/tex] is:

[tex]B_x = 1.5\% \ of \ reading[/tex]

[tex]B_x = (\dfrac{1.5}{100})(12 kg)[/tex]

[tex]B_x = 0.18 \ kg[/tex]

The total uncertainty  for a single experiment with a 95% confidence interval will be:

[tex]w_s = ( B_x^2 + P_x^2)^{\frac{1}{2}[/tex]

[tex]w_s = (0.18^2 + 0.2^2)^{\frac{1}{2}[/tex]

[tex]\mathbf{w_s = 0.2690 \ kg}[/tex]

What is the perimeter of this shape

Answers

9514 1404 393

Answer:

  72.6 cm

Step-by-step explanation:

It is the perimeter of the overall rectangle plus twice the depth of the notch.*

  P = 2(L+W) +2d

  P = 2(16 cm + 13 cm + 7.3 cm) = 2(36.3 cm)

  P = 72.6 cm

The perimeter of the shape is 72.6 cm.

_____

* You may be able to visualize this if you imagine the bottom (top) of the notch translated out (down) to the edge of the rectangle. That translation does not affect the length of the line segment, but helps convince you that only the two legs of the notch are added to the perimeter of the rectangle.

The summer sports training camp has a maximum capacity of 250 students. If 85 have preregistered, then how many students can still participate? Write and solve an inequality.

Answers


Solving by an inequality is : x ≤ 130

Find the value of X. Round to the nearest 10th

Answers

Answer:

Step-by-step explanation:

You have to use the tangent.

Tan(y) = opposite / adjacent

tan(10) = x / 500

tan(10) = 0.1763

0.1763 = x / 500

500 * 0.1763 = x

x = 88.1635

x = 88.2

Help and you get candy :3

Georgia is making necklaces. Each necklace has 3 blue beads and 5 red beads. How many red beads will she need to make 8 necklaces?

A. 25 red beads
B. 30 red beads
C. 35 red beads
D. 40 red beads

Answers

Answer:

40

Step-by-step explanation:

5 x 8 = 40

40 reds beads because 5×8 = 40

PLEASEEE HURRY I WILL GIVE BRAINLEST ITS JUST ONE QUESTION

This is literally my last try and if I get this wrong I fail PLEASE answer it correctly that’s all I ask.

(I just need the last question. The multiple choice answers are ‘4,5,6,7,8,9’ I am allowed to choose more than one if needed)

Below is the graph of a polynomial function F with real coefficients. Use the graph to answer the following questions about F. All local extrema of F are shown in the graph.

Answers

i think it’s is A make me brainliest

NEED HELP MY Son needs it 4⅔ x13

Answers

Answer:

182/3

60.67

hope it's helpful ❤❤❤❤

THANK YOU.

#

Answer:

Exact Form:

182/3

Decimal Form:

60. 6

Mixed Number Form:

60 2/3

!!! ASAP! PLEASE ANSWER WILL GIVE A LOt OF POINTS AND MARK BRAINLIEST !!!!!

Answers

Answer:

80 minutes

35.2 km

Step-by-step explanation:

You can't give more than the 6 points you have allocated. If I am the only person answering, you have to come back to award the Brainliest -- it varies how much time. Usually 2 or 3 days. Few people do.

The answer to this question depends on you understanding that both girls will be side by side when the second one catches the first. So the distances will be equal

That means that

.44t = 35t + 7.2                     Subtract 0.35t  from both sides

0.44t - .35t = 7.2      

0.09 t  = 7.2                          Divide

t = 7.2/0.09

t = 80 minutes

How far apart are they from the starting point?

d = 0.44t

d = 0.44 * 80

d = 35.2 km from the starting point.

What is the average rate of change between:
x= 1 and x = 2?
x = 2 and x = 3?
x= 3 and x = 4?

Answers

Answer:

The average rate of change between x = 1 to x = 2 is 2, from x = 2 to x = 3 is 4 and from x = 3 to x = 4 is 8.

Step-by-step explanation:

what is the answer of this question? ​

Answers

Answer:

Its B.

Step-by-step explanation:

Because [tex]11^{2}[/tex] + [tex]12^{2}[/tex] does not equal [tex]15^{2}[/tex]

121 + 144 [tex]\neq[/tex] 225

265 [tex]\neq[/tex] 225

If there are 9 hippos, how many pumpkins do you need?

Answers

Answer:

9 go to the store rn.

The Bayesian statistician Bruno de Finetti (1906–1985) began his 1973 book on probability theory with the declaration: "PROBABILITY DOES NOT EXIST." The capitals appeared in the original, so I imagine de Finetti wanted us to shout this statement. What he meant is that probability is a device for describing uncertainty from the perspective of an observer with limited knowledge; it has no objective reality. Discuss the globe tossing example from the chapter, in light of this statement. What does it mean to say "the probability of water is 0.7"?

Answers

Answer:

It means that if we select a random point around the globe, there is a 70% = 0.7 probability that it represents water.

Step-by-step explanation:

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

In this question:

We know, that the planet Earth is formed 70% by water, and the globe represents this. This means, as the statement says, the if we select a random point around the globe, there is a 70% = 0.7 probability that it represents water.

'Twice a number n decreased by five'.

Answers

Answer:

2n-5

Step by step Explanation:

You must put 2 in front of "n" to represent the multiplication of the 2 numbers. Then put a subtraction sign and five the show the number is decreased by 5.

Hope this helps!

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