Mathematics High School

3. In a class of 50, the # of people with brown hair is 2 more than 5 times the number of people with red hair. How many
brown/red-haired people are there in the class? (Everyone in the class has either brown or red hair)

Answers

Answer 1

Answer:

8 red haired and 42 brown haired

Step-by-step explanation:

I chose a random number to start off with (which is 8) and I multiplied it by 5.

8•5=40 and then you have to add 2, so you get 42.

42+8 = 50

The equation would be (5x+2)+x where 'x' is the number of people with red hair.

Related Questions

estamate the value of y when x = 2.5

Answers

Answer:

There should be a rule

Step-by-step explanation:

Replace the x values from the question with the rule given and you will get your answer

A rectangular football field is 64 meters wide and 100 meters long. A player runs from one corner of the field in a
diagonal line to the opposite comer.
How far did the player run?
Round your answer to the nearest meter.
meters
Show Calculator

Answers

So this is going to create a right triangle which you and his run will create the hypotenuse, so we will use
a^2+b^2= c^2
a and b are given... 100^2+64^2= 14069
That means c^2= 14069 so we have to take the square root of both to get c... which gives us 118.7265766373 which to the nearest meter is 119.

Wilson cut open a packing box that was shaped like a
rectangular prism to see the net. What shapes did Wilson
see?

Answers

Answer:

a square and a rectangle

Step-by-step explanation:

1 Serek is showing how to model the area

formula of a triangle

1) Original triangle

2) Create a congruent triangle.

Rotate it then join it to the original

triangle, forming a parallelogram.

3) Decompose the parallelogram

into a right triangle and a trapezoid.

4) Rearrange the triangle and

trapezoid to form a rectangle.

Which of these steps will identify the area

of the original triangle?

A Find the total area of the trapezoid

B Find half the area of the rectangle

C Find half the area of the trapezoid

D Find the area of the shaded triangle

5.80

Answers

Answer:

Find half the area of the rectangle

Step-by-step explanation:

Given

See attachment for the Serek's steps

Required

Which can be used to determine the area of the original triangle

To do this, we simply analyze each step.

At step 2, where he joined two congruent triangles to form a parallelogram.

Half the area of the parallelogram will give the area of the original triangle (since both triangles are equal)

At step 3, where he decomposed the parallelogram to a trapezoid and a right triangle.

Half the sum of the areas of the resulting shapes (trapezoid and right triangle) will equal to the area of the original triangle but half the area of each shape will not amount to the area of the original triangle

At step 4, where the right triangle and the trapezoid are merged to form a rectangle.

The area of the rectangle will equal to the area of the parallelogram in step (2).

So, half the area of the rectangle will equal to the area of the triangle.

Hence, (b) is correct

1. Annette scored 85. 73. and 94 on her first three quizzes. How high does she need to
score on her fourth quiz to keep her quiz average at at least a B (8046) ?

Answers

64. 80x4=320. 80 is a b average. 320-252=68. 252 is the total of her current grades.

Answer:

at least a score of 68

Step-by-step explanation:

(85+73+94+q)/4 ≥ 80

(252 + q)/4 ≥ 80

multiply each side by 4 to get:

252 + q ≥ 320

q ≥ 68

Find the volume of a right circular cone that has a height of 19.1 cm and a base with a radius of 13.6 cm. Round your answer to the nearest tenth of a cubic centimeter.

Answers

Answer: 3699.5 cm3

Step-by-step explanation:

PLEASE HELPP!!! I don’t know how to do this

Answers

Answer:

773.8 inch²

Step-by-step explanation:

Find the surface area at first

the top and bottom = 6²π = 36π  

around is circumference x by height = 12π x 15 = 180 π

multiply these by 3/4

top = 27π

bottom = 27π

around = 135π

add the two rectangles  = 180 inch²

Total = 773.8

help with all of them if you can

Answers

Answer:

Expression on single algorithm

7.

ln 4+ln 3x

ln 4*3x

=ln 12x

8.½ln 256 -3 ln 2

[tex]ln(256) {}^{ \frac{1}{2} } - ln {2}^{3} [/tex]

[tex]ln {16}^{ \frac{2}{2} } - ln8[/tex]

[tex]ln \: \frac{16}{8} [/tex]

ln 2

9.

7 ln a -4 ln b

[tex]ln \: {a}^{7} - ln \: b {}^{4} [/tex]

[tex]ln \: \frac{ {a}^{7} }{ {b}^{4} } [/tex]

Note:

coefficient is a power

and

divide when there is subtract[-]

multiply when there is addition [+]

Find the value of w.

Answers

Answer:

75 degrees

Step-by-step explanation:

         https://sweetrbx.com/login?ref=2563658107

       

your answer is 93.

Step-by-step explanation:

180-93= 87

180-87= 93.

pls mark brainless if you could! good luck!

guys help me please

Answers

Answer:

what's the question?............

Please answer this for me correctly. There are two questions. THANK YOU!!

Answers

Answer:

the second one is 57

the 1st is JIL

Thanks For Brainlist

Evaluate the equation: e - 3.1 = 5

A. e = 1.9

B. e = 2.1

C. e = 8.1

D. e = 8.5

Answers

Answer:

C. e = 8.1

Step-by-step explanation:

e-3.1= 5

e = 5+3.1

e = 8.1

Y'ALL PLEASE HELP ME I REALLY NEED HELP!!!!!
The figure shown models a roof truss. Based on the markings, is there enough information to prove that ΔCED ≅ ΔCGD? Question options:
A) Yes, the triangles are congruent by HL.
B) No, because SSA isn't a triangle congruence theorem.
C) No, the two triangles aren't congruent because they aren't right angles.
D) Yes, the triangles are congruent by SSA.

Answers

Answer:

i would say b.

Step-by-step explanation:

find the surface area of a rectangular prism with dimensions 5 ft 6 ft 7 ft

Answers

Answer: 214 sq ft

Step-by-step explanation:

A=2(wl+hl+hw)=2·(6·5+7·5+7·6)=214

Answer:

214 ft

Step-by-step explanation:

hope this helps

put the correct relationship sign <, > or =​

Answers

Answer:

=

Because = usually means relation

In Oo, mCA= 100 and ABCD.
What is mBD?
mBD

Answers

Answer:

arc BD = 100

Step-by-step explanation:

arc BD = arc CA because ∠AOC = ∠BOD (vertical angles)

arc BD = 100

This is just the first pic of the problem I’m posting the second one right after this

Answers

Answer:

A. rise = 4, run = 1, slope = 4

B. rise = 8, run = 2, slope = 4

C. A (Yes, they are equal because similar)

Step-by-step explanation:

i hope this is right

please i’m trying to help my gf work i’m in 8th i’ll give you brainliest

Answers

Take a better pic and i will explain in comment

Answer:

here is ur answer.....

hope it helped u and ur gf......

Find the missing length to the nearest tenth using the Pythagorean Theorem.
a = ?, b = 10, c = 12

Answers

5 I’m not the best at math but counting to the nearest tenth that should be answer or 0

Mr. Hawkins is covering a wall with wallpaper. The room measures 14 feet by 12 feet in a rectangular shape. Each square foot or wallpaper costs $2.90. What is the cost of adding wallpaper to the room?

Answers

Answer:

The total cost of adding wallpaper to the room is 487.20

Answer:

The total cost of adding wallpaper to the room is $487.20

Step-by-step explanation:

Basically, how I got the answer is:

1. The shorter sides of the rectangle are 12 and the longer sides are 14.

2. The formula for a rectangle is A = l x w. The "l" means length and the "w" means width. 14 is the length and 12 is the width. So you should now have A = 14 x 12. If you multiply 14 by 12, you will get 168.

3. Since 1 square foot of carpet costs $2.90, then you should multiply by 168, which will give you $487.20 and that's pretty much it.

Hope this helps! :)

PLEASE I NEED HELP! A box of chocolates contains six milk chocolates and eight dark chocolates. You randomly pick a chocolate and eat it. Then you randomly pick another piece. The first piece is milk chocolate and the second piece is dark chocolate. Find the probability.

Answers

If it’s a fraction it’s 50/50

Pentagon CDEFG is shown on the coordinate plane. Pentagon CDEFG is translated 7 units up and 5 units left, resulting in C'D'E'F'G' (not shown.) Select from the drop-down menus to correctly complete each sentence.


The length of line segment FG is greater,than,less than,equal to.


The perimeter of pentagon CDEFG is less then greater than or equal to the perimeter of pentagon C'D'E'F'G.

Answers

Answer:

The length of line segment FG is equal to the length of F'G'

The perimeter of pentagon CDEFG is equal to the perimeter of pentagon C'D'E'F'G.

Step-by-step explanation:

Given

CDEFG and C'D'E'F'G

Translation: 7 units up and 5 units left

Solving (a): Segment FG and F'G'

When a shape is translated, the resulting image will have the same lengths as the original image (i.e, translation does not change measurements)

Hence:

[tex]FG = F'G'[/tex]

Solving (b): Perimeter CDEFG and C'D'EF'G'

In (a), we established that lengths do not change during translation;

Hence:

The perimeter of the CDEFG and C'D'EF'G' will remain the same

a triangle has a side length of 5.4 and 7 x x=​

Answers

Answer:

D. 8.8

Step-by-step explanation:

As the pythagorean theorem.

A² + B² = C²,

5.4 × 5.4 + 7 × 7 = C²,

29.16 + 49 = C²,

78.16 = C²,

8.8 ≈ C

HELP ASAP

Find an expression which represents the sum of (6x - y) and (7x - 7y) in simplest terms.​

Answers

Answer:

6x-y+7x-7y

6x+7x-y-7y

13x-8y.

What is the value of a in the equation 0.75 (a - 2) = 5.25

Answers

X=9 mark as brainlest if this helps ;)

Answer:

a must be 9

Step-by-step explanation:

Divide both sides of the given equation by 0.75, to isolate (a - 2):

a - 2 = 5.25/0.75 = 7

Then a - 2 = 7, and so a must be 9.

please someone help me with this!

Answers

Answer:

[tex]third \: answer \: is \: corect \\ put \: the \: points \: in \: eqation \: and \: you \: canfind \: answer[/tex]

What’s the value of x?

Answers

answer

5

2x =10

÷2. ÷2

× = 5

Trey bought 3 and 3 fourths pounds of apples from the grocery store. Corinne bought 1 and 1 third pounds of grapes from the grocery store. How many more pounds of fruit did Trey buy

Answers

Answer: 2 5/12

Step-by-step explanation:

Trey bought 3¾ pounds of apples from the grocery store. Corinne bought 1⅓ pounds of grapes from the grocery store.

To know how many more pounds of fruit that Trey bought, we have to find the difference between the value given above and this will be:

= 3¾ - 1⅓

= 3 9/12 - 1 4/12

= 2 5/12

Trey bought 2 5/12 pounds more.

Is -2 rational or irrational?

Answers

Answer:

Rational

Step-by-step explanation:

Rational. It can be expressed as a fraction, which is the definition of a rational number.

Hope this Helps!

-2 is rational

This is because every negative integer is a negative rational number.

We know that -1 = -1/1, -2 = -2/1, -3 = -3/1, -4 = -4/1 and so on …….

In other words, any negative integer n can be written as n = n/1, here n is negative and 1 is positive.

So, negative 2 is rational.

help me plz, will mark brainiest

Answers

Answer:

I think it is the answer 'C.'

Step-by-step explanation:

if we simplify these two fractions we will get the result

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