Mathematics High School

evaluate 68 x 71 mentally.

Answers

Answer 1

Answer:

4828 = 68 x 71

Step-by-step explanation:

how I looking at it all I did was multiply

Answer 2

Answer:

4828

Step-by-step explanation:

68x71=4828

Related Questions

Simplify 7 +(-3). (1 point)

Answers

Answer:

4

Step-by-step explanation:

7-3=4

Answer:

7-3=4

Step-by-step explanation:

Im not quite sure if this is what you were asking for but here

Please help this is due today :)

Answers

The slope is 1/2
(Remember rise/run)
The full equation would be 1/2+1

I need help with this equation

Answers

Step-by-step explanation:

whats the equation lol

Answer:

What equation......

Step-by-step explanation:

IDG

What is the slope of the line that passes through the points (-8, 3) and (-8, 5)?

Answers

Answer:

The slope is undefined

Step-by-step explanation:

Slope (m) = infinity  (undefined)

θ =  π  = 90°

2

distance (d) = 2

ΔX = 0  

ΔY = 2

900 students attend Ridgewood Junior High School. 5% of students bring their lunch to school everyday. How many students brought their lunch to school on Thursday?

Answers

Answer:

180 students brought their lunch to school on Thursday

Step-by-step explanation:

We are told that out of 900, 5% of the students brought their lunch to school everyday

So the number that brought their lunch on Thursday will be;

5% of 900

= 5/100 * 900 = 180

The total charge on 4 particles is −36 units. All the particles have the same charge.

need asap What is the charge on each particle?

−9 units
−8 units
8 units
9 units

Answers

The answer is -9...........

Answer:

-9

Step-by-step explanation:

If you multiply 9x4 you get 36. its minus 36 so therefor it has to be -9

Hope this helps :) <3

WILL MARK BRAINLIEST!!! Can someone help me wit dis question?

Given y = 9x - 4, what is the y-intercept?

a.) 4
b.) -4
c.) 9

Answers

Answer:

B.) -4

Step-by-step explanation:

y=mx+b

b is equal to the y-intercept.

Answer:

-4

Step-by-step explanation:

The slope intercept form is y = mx + b.

m = slope

b = y-intercept

since b = -4, the y-intercept is -4

Find the airthmetic mean of prime numbers between 20 and 50​

Answers

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

Prime numbers between 20 and 50 are :

[tex]23 \: , \: 29 \: , \: 31 \: , \: 37 \: , \: 41 \: , \: 43 \: , \: 47[/tex]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

Arithmetic mean is :

[tex] \frac{23 + 29 + 31 + 37 + 41 + 43 + 47}{7} = \frac{251}{7} = 35.857 \\ [/tex]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

Answer:

23 , 29 , 31 , 37 , 41 , 43 , 47

Mass = 65 kg
Acceleration = 0.3 m/s2
Force =

Answers

Answer: 19.5 N

Step-by-step explanation:

Answer:

The answer is 19.2N

Step-by-step explanation:

F=m a

F=64*0.3=19.2N

Suppose a system of equations was solved my elimination and the resulting equation was 0=3. Which of the following statements is/are true.

a. The slopes of the two equations in the system are the same but their y-intercepts are different.

b. The system is an independent system.

c. The graphs of the two equations would intersect at the point (0,3).

Answers

Answer:

a. The slopes of the two equations in the system are the same but their y-intercepts are different.

Step-by-step explanation:

The system resulting in equation 0=3 means:

There is no solutionThe lines are parallel as no intersection

Correct choice is:

a. The slopes of the two equations in the system are the same but their y-intercepts are different.

9. Three minutes after a hot tub starts to fill, the tub contains 24
gallons of water. After 5 minutes the tub contains 40 gallons of water.
The relationship between the number the number of gallons in the hot
tub and the time in minutes is a proportional linear relationship.
Determine the number of gallons of water the tub increases per minute.

Answers

Answer:

8 gallons per minute

Step-by-step explanation:

24 gallons in 3 minutes

you divide 24 by 3 which is 8

40 gallons in 5 minutes

you divide 40 by 5 which is 8

the relationship is that in both the answer was 8 as in 8 gallons per minute

Find the sum of the complex numbers.
(3 + 5i) + (10 + 71)
O A. 13 + 121
O B. 7 + 121
O
C. 13 + 2i
O D. 7 + 21

Answers

Answer:

A

Step-by-step explanation:

(3 + 5i) + (10 + 7i) =

3 + 5i +10 + 7i =

3 + 10 + 5i + 7i =

13 + 12i

The point-slope form of the equation of the line that passes through (-5, -1) and (10,-7) is
Y+ 7 = -
-- (x-10). What
is the standard form of the equation for this line?
O 2x - 5y = -15
2x - 5y = -17
2x + 5y = -15
2x + 5y = -17
Save and Exit

Answers

Answer:2x-5y=-15

Step-by-step explanation:

What are the stages of asthma? Which is worse?

Answers

Answer:

Mild Intermittent Asthma – No more than 2 Symptoms per week, no problems in between attacks which only last a few hours to at most a few days, less than 2 nighttime episodes per month.

Mild Persistent Asthma – Symptoms happen at least 2 a week but not more than once a day.

Moderate Persistent Asthma – There are symptoms every day and because of that you have to use rescue medication every day as well.

Severe Persistent Asthma – You can’t do that much physical activity and always have to carry around and often use a rescue device.

Step-by-step explanation:

Answer:

bop

Step-by-step explanation:

Joe goes to the store to buy milk that cost x + $3, bread that cost x + $2.25, and 3 bags of potato chips that cost x + $1.50 each. Write an equivalent expression to represent what he spent.

Answers

Given:

Milk cost = x + $3,

Bread cost = x + $2.25,

3 bags of potato chips cost = x + $1.50 each.

To find:

The equivalent expression to represent what he spent.

Solution:

1 bag of potato chips cost = x + $1.50

3 bag of potato chips cost = 3(x + $1.50).

Total cost = Milk cost + Bread cost + Cost of 3 bags of potato chips

[tex]\text{Total cost}=(x+\$3)+(x+\$2.25)+3(x+\$1.50)[/tex]

[tex]\text{Total cost}=x+\$3+x+\$2.25+3x+\$4.50[/tex]

[tex]\text{Total cost}=(x+x+3x)+\$(3+2.25+4.50)[/tex]

[tex]\text{Total cost}=5x+\$9.75[/tex]

Therefore, the required expression is 5x+$9.75.

Subtract 5x^2+8x-11 from 3x^2+8x-7

Answers

Answer: -2x^2+4

Explanation: First you’d need to rewrite the equation as (3x^2+8x-7)-(5x^2+8x-11). Then since you are subtracting, distribute the negative to the right side which will then give you -5x^2-8x+11 since you flip the signs. Then simply combined like terms. -5x^2 + 3x^2 is -2x^2. Then 8x-8x is 0 and lastly, +11-7 is 4. So in order, all together, your answer is -2x^2+4.

Which of the following equations represents a line that passes through the points (−6,0) and (2,−4)

Answers

Answer: only 2 (y = -1/2x - 3)

Step-by-step explanation: so first find the gradient by doing y minus x and dividing

-4-0/2--6 which equals -1/2 so you know that -1/2 is your gradient. 2 is the only one with a gradient of -1/2x.

Hope this made sense. If not I'll explain again

Choose 3 values that would make this inequality true. 9 - n ≥ 4

Answers

Answer: Could be 0,1,2,3,4,5

Step-by-step explanation: 9-n has to be greater or equal to four. 9 minus 4 is five. So all of the answers must be positive numbers that are less than five.

WILL GIVE BRAINLIEST

WHAT IS 2+2

RIGHT AWNSER WINS/ HINT 4+18

Answers

Answer:

2+2=4

4+18=22

Step-by-step explanation:

A delivery driver earns $221 for 17 hours of work. Assuming he is paid by the hour, how much will he earn in 12 hours?

Answers

Answer:

156

Step-by-step explanation:

221/17=13

13*12=156

Answer:

$156

Step-by-step explanation:

221/17=x/12

221*12=17x

2652=17x

156=x

An art teacher needs to cut out squares of paper for an art project from a left-over sheet of paper measuring 72 x 104 inches. What size would the biggest possible square be with sides of whole number length?

Answers

Answer:

7488 inches

Step-by-step explanation:

I think that this is the correct answer. The reason is that you have to multiply 72 x 104. I´m not 100% sure.

The required maximum area of the biggest possible square is with sides of a whole number length of 7396 inches².

What is surface area?

The surface area of any shape is the area of the shape that is faced or the Surface area is the amount of area covering the exterior of a 3D shape.

Here,
Area of the leftover sheet = 72  × 104 = 7488 inches²

area of the square = 7488
a² = 7488
a = 86.53

Somehow, for  the biggest possible square to be with sides of whole number length,
The area is given as,
= 86²
= 7396 inches²

Thus, the required maximum area of the biggest possible square be with sides of whole number length  7396 inches².

Learn more about the surface area here:

https://brainly.com/question/2835293

#SPJ2

Are the lines parallel? 2x + 3y = 6 and 2x + 3y = 10

Answers

This is a website called Desmos but to solve this all you have to do is find slope and if they are reciprocals(are opposite of each other) they will be perpendicular. Hope this helps :)

Answer:

the fact that this dosen´t the question like

Step-by-step explanation:

Help me please!?!?!?!?????

Answers

Answer:

1

Step-by-step explanation:

.
Choose the correct answer to 318 x 6.
1,808
1,906
1,918
1,908

Answers

Answer:

1,908

Step-by-step explanation:

1,908 u know u can calculate that.

*15 points* any help would be appreciated plz

Answers

Answer:

70 degrees because all of the angles in a triangle add up to 180 degrees150 degrees because the adjacent angle is 30 degrees110 degrees because the adjacent angle is 70 degrees50 degrees because angle 5 would also have to be 50 in order for all of the angles on that line to be 180 degrees

Step-by-step explanation:

I hope this helps!!!!

-0.59x+0.39x=5.8 I need help

Answers

Answer: x = -29

Step-by-step explanation:

-0.59x+0.39x=5.8

Collect like terms

-0.2x = 5.8

Divide both sides of the equation by -0.2

x = -29

Response to user in comments:

-0.59+0.39=-0.2 that is a fact

-0.2/-0.2=1 that is a fact

5.8/-0.2= - 29 that is a fact

These are the facts about the steps of the equation. Solving Steps for Solving the Equation

Do 24(0x+0.33333333)=3x+17 have a solution

Answers

Answer:

x≈-3

Step-by-step explanation:

Go and ask the person who gave u the brain

Please help me out!​

Answers

I don’t even know sorry I will try and help out next time

URGENT HELP! VIEW PICTURE​

Answers

Answer:

it 2

Step-by-step explanation:

Answer:
I think it’s 3(n/5)

Explanation:

Can someone please please help me. ?????

Answers

Answer:

#1

x intercept is -5

y intercept is -5

#2

y=8x

Step-by-step explanation:

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