Mathematics High School

Can someone help me please. I have to show my work.

Answers

Answer 1

Answer:

Step-by-step explanation:

1. P = (width + lengh) * 2 = (23 + 10) * 2 = 33 * 2 = 66

A = width * lengh = 23 * 10 = 230

2. width = 7

P = (width + lengh) * 2 = ( 7 + 9) * 2 = 16 * 2 = 32

Answer 2

Answer:

4. area= 230cm^2 perimeter= 66cm

5. width= 7m perimeter= 32m

Step-by-step explanation:

4. a = w*l

23cm*10cm=230cm^2

p= add all sides

23cm+23cm+10cm+10cm=66cm

5. w= a/l

63m^2/9m=7m

p= add all sides

7m+7m+9m+9m=32m

Related Questions

Mario has 160 pizzas and is collecting two pizzas a week. Write the equation for the number of pizzas Mario has

Answers

Answer:

160+2x

Step-by-step explanation:

Answer:

Mario has after 5 weeks 170 pizzas.

Step-by-step explanation:

Each time add to the chart 2 Pizzas and move a week.

-2.7F + 0.4F - 11 - 9
How do I solve this, like I understand the first few parts but when I have to combine Like terms I get stuck‍♀️

Answers

Answer:

-2.3F-20

Step-by-step explanation:

-2.7F + 0.4F - 11 - 9 = -2.3F-20

Answer:

I think when you collect all the like terms the equation comes out to be

Step-by-step explanation:

-2.3F - 20

7. The ratio of the weight of cement to the weight of sand in a concrete mixture is 1:3.
Complete the table to show the different weights of cement or sand in the concrete mixture.

Answers

1 3 6 concrete ratio
Concrete
Proportions by Cement No. of 50 kg Sand to total aggregate
1:3:6 4.0 31
1:4:5 4.0 41
1:3:5 4.4 35
1:4:4 4.5 47

Plz help me with this question

Answers

Answer:

Step-by-step explanation:

Remark

There are probably a couple of ways that you could do this. I'm going to pick the most obvious way.

Givens.

KN = 2.5

NO = 10

LM = 3

MP = x

Equation

NO/KN = PM / LM

Solution

10 / 2.5 = x / 3 Cross multiply

2.5x = 10 * 3 Combine

2.5x = 30 Divide by 2.5

x = 30/2.5

x = 12

That looks like it should be the answer, and it almost is, but you are asked for LP.

LP = LM + MP

LP = 3 + 12

LP = 15

The answer is 15

You have 0.2 liter of an acid solution whose acid concentration is 16 moles per liter. You want to dilute the solution with water so that its acid concentration is only 12 moles per liter. Use the given model todetermine howmany liters of water you should add to the solution.

Answers

Answer: 0.067 litres of water

Step-by-step explanation:

The mode is:

Concentration of new solution = Moles of acid in original solution / (Volume of original solution + Volume of water added)

Assume volume of water added is w.

12 = 16 (0.2) / (0.2 + w)

(0.2 + w) * 12 = 3.2

0.2 + w = 3.2 / 12

w = (3.2 / 12) - 0.2

w = 0.067 litres of water

The amount of water you should add to the solution is 0.067 liters.

Given

You have 0.2 liters of an acid solution whose acid concentration is 16 moles per liter.

You want to dilute the solution with water so that its acid concentration is only 12 moles per liter.

The concentration of new solution;

You can also use the solution dilution calculator in order to calculate the concentration of ions in a diluted solution.

The amount of water you should add to the solution is given;

[tex]\rm Concentration \ of \ new \ solution =\dfrac{\text{Moles of acid in original solution } }{\text{Volume of original solution + Volume of water added}}\\\\12=\dfrac{16(0.2)}{0.2+w}\\\\12 (0.2+w)=16(0.2)\\\\2.4 +12w=3.2\\\\12w=3.2-2.4\\\\12w=0.8\\\\w=\dfrac{0.8}{12}\\\\w=0.067[/tex]

Hence, the amount of water you should add to the solution is 0.067 liters.

To know more about concentration click the link given below.

https://brainly.com/question/882576

What is the board feet of lumber if it has a 2-inch thickness, 3-inch width and length is 7ft?

A. 1
B. 3.5
C.5
D. 7.5

Answers

Answer:

B. 3.5

Step-by-step explanation:

2inch×3inch×7ft=board ft

2×3=6inch

7ft=84

6×84=504

504inch³=3.5board ft

#gamer

here are 36 points lovely person but first any advice for a student - kid

Answers

I don’t have much advice, but I would make yourself a schedule and a to-do list so you stay in track, and know what you’re doing each day so you can hold yourself accountable and can’t have any excuses about “not knowing about the work” because if you’re organized and get it done fast, you will be able to know about all of you work and have beTter grades since you have more time to learn the material and turn it in on time

Thanks for the points lol

help, look at picture

Answers

Answer:

y= 5/3 which is 1 2/3

Step-by-step explanation:

trust me

y=5/3

.......................

find the m and b of the table

Answers

9514 1404 393

Answer:

m = 1/2

b = -7

Step-by-step explanation:

The formulas for these can be used.

m = (y2 -y1)/(x2 -x1) . . . . . . . . . formula for slope given 2 points

m = (-9 -(-11))/(-4-(-8)) = 2/4

m = 1/2

b = y1 -m·x1 . . . . . . . . . . . . formula for y-intercept given slope and point

b = -11 -(1/2)(-8) = -11 +4

b = -7

un bebe tiene 26.000.000.000 celulas. un adulto tiene cerca de 4.94×10¹³ celulas ¿ cuantas celulas mas tiene un adulto que un recien nacido? escribe la respuesta en notacion cientifica

Answers

el adulto tiene 13 células más que el bebe

what is the solution to the inequality -x/10>-11

Answers

Answer:

x<110

Step-by-step explanation:

-x/10>-11

-x>-11*10

-x>-110

x>110

x<110

Answer:

x > - 110

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the greater than a sign from both sides of the inequality :

x / 10 - ( -11 ) > 0

Simplify ——

—— - -11 > 0

Subtracting a whole from a fraction

Rewrite the whole as a fraction using 10 as the denominator :

-11 -11 • 10

-11 = ——— = ————————

1 10

Equivalent fraction: The fraction thus generated looks different but has the same value as the whole

Common denominator: The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

x - (-11 • 10) x + 110

——————— = ———————

10 10

x + 110

——————— > 0

Multiply both sides by 10

Subtract 110 from both sides

x > -110

Inequality plot for

0.100 x + 11.000 > 0

x > -110

i’m so confused by this does anyone have this figured out

Answers

Answer:

you have to find the angels

Step-by-step explanation:

HELP I NEED HELP ASAP

Answers

What is that Sorry I can’t help

Find the area of the triangle... HURRRY PLZ HELP HELP HELP. ILL MARK BRAINLYIST THINGY

Answers

Answer:

38.25

Step-by-step explanation:

A = 1/2(8.5)(9)

Answer:

[tex]38.25 mm^{2}[/tex]

Step-by-step explanation:

Area of a triangle = 1/2bh

b = 8.5

h = 9

1/2(8.5)(9) = 38.25

What is the slope of the line?
y + 2 = -2 ( x - 3 )
A: -1/2
B: -2
C: 1
D: -1

Answers

D:) o b what ? you very whell

Step-by-step explanation:

A b. d. c

Answer:

The answer is -2

Step-by-step explanation:

I got this answer on Khan Academy.

Hope this helps! :)

how to divide 134 800 by 240 using long method?

Answers

Answer:

sumando

Step-by-step explanation:

sumando 240 134800 veces

60 people attend a game night everyone chooses to play chess a two player game or cribbage a four player game all 60 people are playing chess or cribbage if there were 8 games of cribbage played how many games of chess was played

Answers

Answer:

there were 14 games of chess

Answer:

14 games of chess

Step-by-step explanation:

!!!!!!Plss Help Me!!!!!!!

Answers

Write the problem as an equation:

5n <65

Solve for n by dividing both sides by 5:

n <13

Because the inequality does not contain an equal sign, n (13) is not included in the answer so there would be an open circle on the number 13

The correct answer would be A.

The perimeter of the triangular park shown on the right is 15x-2 what is the missing length

Answers

Answer:

missing length is 6x - 1

Step-by-step explanation:

To find missing length, add two known sides and subtract from perimeter

(15x - 2) - (4x + 4 + 5x - 5)

(15x - 2) - (9x - 1) = 6x - 1

2. Pierre works full time and is paid an hourly rate of $12.50 for 35 hours a week. He is paid for 52
weeks of the year. What are his total earnings for ONE YEAR?

Answers

Answer:

$22,750

Step-by-step explanation:

First, find out how much Pierre is paid per week: $12.50 x 35 -> $437.5/week

Then, multiply to find how much he is paid the whole year: $437.5 x 52 -> $22,750

ï will give the brainlist

Answers

Answer:

x = 28°

Step-by-step explanation:

3x - 21° = 63°3x = 63°+ 21°3x = 84°x = 28°

MARK ME AS BRAINLIST

Answer: X=28

Step-by-step explanation:

(3x-21) = 63

3(28)-21 = 63

3(28) = 84

84 - 21 = 63

63 = 63

Simplify the expression. 25(z-4)

Answers

Answer

25z - 100

Step by step explanation

Answer:

25z-100

Step-by-step explanation:

Find the area of a triangle with:
b: 14 cm
h: 23 cm
ANSWERS
322 cm2
322 cm3
161 cm2
161 cm3

Answers

Answer:

161cm2

Step-by-step explanation:

Area: 1/2 x base x height

1/2 x 14 x 23=161

Area is measured in cm2

Hope this helps!

Cement costs $76 per cubic yard. What is the cost of cement for a sidewalk that is 4 in. Thick, 3ft wide,and 40 ft. Long?

Answers

Answer:

112.46 yd³

Step-by-step explanation:

1 inch = 0.0278 yds

1 feet = 0.333 yd

Thickness = 4 inches = (4 * 0.0278) = 0.1112 yds

Width = 3 feets = (3 * 0.333) = 0.999 yds

Length = 40 feets = (40 * 0.333) = 13.32 yds

Volume of sidewalk :

Thickness * Width * Length

0.1112 * 0.999 * 13.32 = 1.479702816 yd³

1 yd³ of cement = $76

Cost :

1.479702816 yd³ * $76

= 112.457414016

= 112.46 yd³

How many degrees of rotational symmetry does the flower have

Answers

Answer:

It has 5-fold rotational symmetry (72 degrees). The Clematis shown has 8-fold rotational symmetry (45 degrees). It has 8 flower petals arranged around the center of the flower.

Step-by-step explanation:

3x-2.(x+1)=-2 denklemini sağlayan, x'in değeri kaçtır?

Answers

Answer:

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

3x - 2x - 2 =-2

x = - 2 +2

x = 0

hope it helps

− 2/3m = −1/2 solve for m

Answers

Answer:

m=-18

Step-by-step explanation:

-12=2/3m

Find the volume of a right circular cone that has a height of 18 m and a base with a
radius of 5.8 m. Round your answer to the nearest tenth of a cubic meter.

Answers

Answer:

V=634.0 cubic meter.

Step-by-step explanation:

By formula V=πr^2(h/3)

so V=π5.8^2(18/3)

then 5.8square2 =33.64 ,18/3=6 and pi

multiply everything you'll get V=634.0990612

finally it says round to the nearest tenth which mean , V=634.0 cubic meter.

Answer:

634.1

Step-by-step explanation:

please please answer will give brainliest

Answers

Answer:

Step-by-step explanation:

.5xBxH=.5x16x5=8x5=40

Answer:

Step-by-step explanation:

sources: dude trust me

Write an equivalent expression by distributing the "
−−" sign outside the parentheses:
−(3h−2.3k)−7

Answers

Answer:

= -3h + 2.3k -7

Step-by-step explanation:

you want to distribute your negative to each value in parentheses

remember that negative x negative = positive

remember that negative x positive = negative

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