Mathematics High School

Find each percent increase round to the nearest percent from 86 books to 140 books

Answers

Answer 1

Answer: 61%

Step-by-step explanation:

Related Questions

what does the expression 3(20+15) represent?

Answers

Answer:

It represents 3x20 +3x15

Step-by-step explanation:

The expression 3(20+15) represents 20+15 then multiplying it by three.

If you were to solve the expression, the answer would be 105.

20 + 15 = 35

35 x 3 OR 35(3) OR 35 ∙ 3 = 105

I really need help with this, and also if it's Substitution or linear combination and it will be really helpful if you do step by step please. ​

Answers

Answer:

-2x+y=12

Step-by-step explanation:

linear equation

Solve for t. 3t - 18 = 4(-3-3/4t). t=

Answers

Answer:T=1

Step-by-step explanation:

Answer:

t = 1

Step-by-step explanation:

I really need help
Help please (40 points)
Provide the missing statements and reasons for the following proof.
Theorem opposite slides of parallelograms are congruent

Answers

Answer:

See answer below

Step-by-step explanation:

R3:  If parallel lines, then alternate interior angles is congruent

S4:  AC ≅ AC

R5:   ASA

Sewing machine cost $162.40 after a price increase of 16% find the price before the increase​

Answers

Answer:

$140

Step-by-step explanation:

100/116×$162.40=$140

Answer:

Before the increase it was $136.416.

Step-by-step explanation:

16% of $162.40 is 25.984.

We need to do $162.40 - 25.984 which equals to $136.416.

Hope that helps. x

(-2,-4) reflected across the line y = -1

Answers

(-2, -4) reflected across y=-1 is (-2, 2)

Jeremy brought a sandwich and a drink that cost him $7. His drink cost $1.75. Solve the equation 7=s + 1.75 to find s, the cost of Jeremy’s sandwich.

Answers

Answer:

s= $5.25

Step-by-step explanation:

7-1.75=5.25

7=5.25+1.75

s=$5.25

tell me if right plz

Answers

Answer:

yes

Step-by-step explanation:

Please help!! markup and markdown word problems.

1. Timmy wants to buy a scooter and the price was $50. When he goes to the store a second time, he found that price was marked down by 20%. What is the new price?

2. A football is selling for 35% off the original price. The original price was $60. What is the sale price of the football?

Answers

The new price of the scooter will be:

= $50 - (20% × $50)

= $50 - $10

= $40

The sale price of the football will be:

= 35% × $60

= $21

Use the distributive property to remove the parentheses.
-9(-6u+v-5)


I need help- I’ll get brainly list

Answers

Answer:

54u - 9v + 45

Step-by-step explanation:

distributive property

DETERMINE WHICH OF THE LINES ARE PARALLEL OR PERPENDICULAR thx sm

Answers

Answer:

Parallel: a and b

Perpendicular: none

Step-by-step explanation:

You are given the coordinates of each line.

To check if they are parallel or perpendicular, need to find slope.

In this case we can use :

m = (y2 - y1) / (x2 - x1)

So for line a:

(1,5) and (-2, -4)

slope = (-4 - 5) / (-2 - 1)

slope = -9/-3

slope = 3

Line b:

(3, 2) and (1, -4)

slope = (-4 - 2)/(1 - 3)

slope = -6/-2

slope = 3

Line C:

(6, 1) and (-4, 2)

slope = ( 2 - 1) / ( -4 -6)

Slope = 1/ -10

slope = - 1/10

Line A and B are parallel because their slopes are the same.

To check if they are perpendicular, we need to know if their slopes are reciprocals.

Here none of them are perpendicular to each other

In triangle QRS the measure of angle RSQ is 50 degrees , and the measure of angle QRS is 37 degrees. What is the measure of angle SQR in degrees?

Answers

Answer:

[tex] < rsq + < qrs + sqr = 180 \\ 50 + 37 + < sqr = 180 \\ < sqr = 180 - (50 + 37) \\ < sqr = 180 - 87 \\ = 93[/tex]

I hope it helps you

Use the algebra tiles to help you solve the equation. 4x-2=10

Answers

Answer:

The solution to this equation is x=3

Step-by-step explanation:

HELLPPPPPPP


please help ​

Answers

Answer:

i think that's A

I'm just guess

convert the following
1. 0.3 m
2. 37 cm
3. 3.3 cm
4. 4,000 dm
5. 6 hm
6.0.441 L
7. 24.96 L
8. 1,915 ml
9. 13.8 kg
10. 1,698 9
​

Answers

Answer:

I dont need

Step-by-step explanation:

what to convert

A school communoty had planned to reduce the number of grade 9 students per class room by constructing additional class room however they constructed 4 less rooms than they planned As the result tye number of students per class was 10 more than they planned if there are 1200 grade 9 students in the school determine the current number of class rooms and the number of students per class (I need instant help)​

Answers

Here is my solution. I hope it is helpful.

What is the slope of a line that is perpendicular to the line y = 1?
O-1
ОО
O 1
O undefined

Answers

Answer:  D)   Undefined

Explanation:

The equation y = 1 is the same as y = 0x+1

Match that to the form y = mx+b to see that the slope is m = 0

Any horizontal line has a slope of 0.

Notice that we cannot apply the negative reciprocal to this because 0 = 0/1 leads to 1/0 which is undefined

The slope of any vertical line is undefined because we have run = 0 and slope = rise/run = 1/0. The rise can be any number you want (it doesn't have to be 1) and we get the same result.

The slope of a line that is perpendicular to the line y = 1 is undefined.

What is Slope of Line?

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is

m=y₂-y₁/x₂-x₁

The equation y = 1 is the same as y = 0x+1

Match that to the form y = mx+b to see that the slope is m = 0

Any horizontal line has a slope of 0.

y = 1 is an vertical line.

The slope of any vertical line is undefined because we have run = 0 and slope = rise/run = 1/0.

= Undefined

Hence,  the slope of a line that is perpendicular to the line y = 1 is undefined.

To learn more on slope of line click:

https://brainly.com/question/16180119

#SPJ7

what is 26x54 PLSSSSSSSSSSSS

Answers

Answer:

1404

Step-by-step explanation:

Answer:

1404

Step-by-step explanation:

If you need assistance with problems like these, try breaking it up!

Instead of 26*54, try doing 26*50 + 26*4

Having "wholer" numbers will help the process.

What's 21 x 202
I need to know for my report

Answers

Answer:

4242

Step-by-step explanation:

Answer:

4242

Step-by-step explanation:

The students at the engineering conference ate more than 20 pizzas. The inequality x greater-than 20 represents the situation. Which graph represents the inequality?
A number line going from 15 to 25. An open circle is at 20. Everything to the right of the circle is shaded.
A number line going from 15 to 25. An open circle is at 20. Everything to the left of the circle is shaded.
A number line going from 15 to 25. A closed circle is at 20. Everything to the right of the circle is shaded.
A number line going from 15 to 25. A closed circle is at 20. Everything to the left of the circle is shaded.

Answers

Answer: Image A

Step-by-step explanation:

math

Answer:

A

Step-by-step explanation:

Please help with this !

Answers

17+15+b = 180 so If you do 180-(15+17) =b
Well we know 15+17 is 32 so now you do 180-32 which equals 148 so b=148

A line through which two points would be perpendicular to the line y = 2/5x - 5/2 ?​

Answers

Answer:

Step-by-step explanation:

c

What expression is equivalent too 3(-6h - 4) + 5h?

Answers

Answer:

-13h - 12

Step-by-step explanation:

3(-6h - 4) + 5h

-18h - 12 + 5h

-13h - 12

hope this helps! :D

have a miraculous day, and brainliest is immensely appreciated!! <3

Two weeks ago,a bookstore sold 120 books Last,week,it sold 138 books.find the percent of increase in sales?

Answers

The Formula for this is x2-x1/x1.
It would be a 15% increase.

Answer:

15%

Step-by-step explanation:

[tex]\frac{138}{120}[/tex]×100=

1.15

115%

Increase in 15%

Find the value of x

Answers

Answer:

  x = 17

Step-by-step explanation:

The hash marks indicate that the segment marked x+2 connects the midpoints of the sides of the triangle. Therefore, it is a "midline" and has half the length of the parallel base.

  x +2 = 1/2(38)

  x = 19 -2 . . . . . subtract 2

  x = 17

is (-a + b)² = a² - 2ab + b² right or wrong, and why?

Answers

Answer:

[tex]\huge\boxed{\sf Right.}[/tex]

Step-by-step explanation:

[tex](-a+b)^2[/tex]

Let's apply the formula (x+y)² = x² + 2xy + y²

Here, x = -a and y = b

So,

= (-a)² + 2(-a)(b) + (b)²

= a² - 2ab + b²

Hence, it has been proved that (-a + b)² = a² - 2ab + b².

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807

A town doubles its size every 35 years. If the population is currently 50000, we will the
population be in 140 years?


please help

Answers

140/35= 4. so it will double 4 times in the next 140 years. so it’s 50000 x 2= 100k 100k x 2 = 200k 200k x 2= 400k 400k x = 800k so the population in 140 years will be ~800k people

Use substitution to solve each system of equations.
=++=

Answers

Answer:

I can only see =++= so please repost your answer so i can edit my answer as well

Step-by-step explanation:

y/5 = 2/5 im not sure how to complete this question

Answers

Answer: y is 2

Step-by-step explanation:

[tex]\huge \bf༆ Answer ༄[/tex]

Let's solve for y ~

[tex] \sf \dfrac{y}{5} = \dfrac{2}{5} [/tex]

[tex] \sf y = \dfrac{2}{ \cancel5} \times \cancel5[/tex]

[tex] \sf y = 2[/tex]

Value of y is 2

Acellus
Find the circumference of this circle
using 3 for n
C ~ [?]
3
C = 270
.

Answers

We can use 2x3x3. (2 x pi x radius)
This gives us 18. C=18
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