Mathematics College

I need help with this

I Need Help With This

Answers

Answer 1

Answer:

A = 48 cm²

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Step-by-step explanation:

Step 1: Define

A = πr²

Radius r = 4 cm

Step 2: Solve for A

Substitute in variables [Area Formula]:                                                         A = π(4 cm)²[Area] Evaluate exponents:                                                                           A = π(16 cm²)[Area] Substitute in π:                                                                                    A = 3(16 cm²)[Area] Multiply:                                                                                                A = 48 cm²
Answer 2

Answer:

24=74839<> multiple 67392

Related Questions


10. In how many ways can a student select 7 out of 10 questions to work on an exam

Answers

Answer:

Step-by-step explanation:

7C10 = 10!/(7!)(10-7)!

7C10 = 10!/(7!)(3!)

7C10 = (10 x 9 x 8 x 7)/(7 x 6 x 5)(6)

7C10 = (10 x 9 x 8)/6

7C10 = 720/6

7C10 = 120

Answer: 120 ways

Find the missing side or angle.
Round to the nearest tenth.
A=98°
b=11
c=19
a=[?]

Answers

Answer:

your answer will be a= 23.2

Step-by-step explanation:

hope this helps u have a great day ^_^

Answer:

A= 23.2

Step-by-step explanation:

[tex]a^2=b^2+c^2-2bc CosA[/tex]

[tex]a^2=11^2+19^2-2(11)(19)Cos 98[/tex]

[tex]a^2=121+361-418cos98[/tex]

[tex]a^2=121+361-(-58.17)[/tex]

[tex]\sqrt{a^2} =\sqrt{540.17}[/tex]

[tex]a=23.2[/tex]

[tex]-----------[/tex]

hope it helps..

have a great day!!

How
Many small circles of radius 7cm
can be got from big
big circle of radius
35cm​

Answers

Answer:

Let get x as a number of small circles.

Area of big circle = Area of all small circles

(Here . implies multiplication)

22/7 . 35 cm .35cm = 22/7 . 7cm .7cm .x

x =  (22/7 . 35 cm .35cm) / (22/7 . 7 cm .7cm)

x = (35 . 35) /(7.7)

x = 25

Step-by-step explanation:

express 832.0646 to a significant​

Answers

Answer:

Step-by-step explanation:

200

Please help me please

Answers

Answer:

3) [tex]x^{2}[/tex] + 4x - 21

Step-by-step explanation:

(x - 3)(x + 7)

Distribute:

x(x + 7)

-3(x + 7)

x(x) = [tex]x^{2}[/tex]

x(7) = 7x

-3(x) = -3x

-3(7) = -21

Combine like terms:

7x - 3x = 4x

Put it together:

[tex]x^{2}[/tex] + 4x - 21

Answer: x²+ 4x - 21

Let's do this step-by-step.

1. Apply the foil method. (formula: (a + b)(c + d) = ac + ad + bc + bd)

F - First

O - Outer

I - Inner

L - Last

= xx + x × 7 + (-3)x + (-3) × 7

2. Apply the minus and plus rules. + (-a) = -a

xx + 7x - 3x - 3 × 7

3. Simplify.

Convert xx into a exponent.xx ⇒ x²

Subtract 7 by 3.7x - 3x = 4x

Multiply 3 by 7.7 × 3 = 21

Hence, the answer is x² + 4x - 21

Let me know if you have any questions.

~ Lily, from Brainly.

Determine which statement or statements are true. texts sent = 8 ; calls made = 5 For every 5 texts sent there were 8 calls made The ratio of texts sent to calls made was 8:5 For every 5 calls made there were 8 texts sent The ratio of texts sent to calls made was 5:8

Answers

Answer:

The ratio of texts sent to calls made was 8:5

For every 5 calls made there were 8 texts sent

Answer:

For every 8 calls made there were 2 texts sent.

And

For every 2 texts sent there were 8 calls made.

Does 3/10 x 1/2 = 3/20 ?

Answers

Answer:

Yes

Step-by-step explanation:

yes, yes it does

yeah it does, you just multiply the numerators and the denominator

HELLLLLLLLPPPPPP PLEASE ON THIS QUESTION

Answers

Answer and Step-by-step explanation:

Every episode is 20 minutes. The points would be:

(40, 2)(80, 4)(120, 6)(160, 8)

29% of a university's freshman class are majoring in Economics. If 870 students in the freshman class are Economics majors, how many students are in the freshman class?

Answers

Answer:

x=3000

Step-by-step explanation:

870=29/100x

x=3000

In a survey at a local university, 38% of students say that they get less than the recommended eight hours of sleep per night in a group of 4500 students, how many would you expect get eight or more hours of sleep per night?

Answers

Answer:

2790

Step-by-step explanation:

38/100 * 4500 = 1710 get less than eight hours of sleep

4500 - 1710 = 2790 students

is 3/4 equivalent to 27/36

Answers

Yes because you can multiply 3/4 by 9/9 and you’ll get 27/36 :)

Answer:

yes , 27/36=3*9/4*9=3/4 both the number 27 and 36 can be multiplied by 9 and can be reduced to its lowest form i.e.

What is f(6)?
f(x) = 5x - 2

Answers

Answer:

f(6) = 28

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

FunctionsFunction Notation

Step-by-step explanation:

Step 1: Define

f(x) = 5x - 2

f(6) is x = 6

Step 2: Evaluate

Substitute in x [Function]:                                                                                f(6) = 5(6) - 2Multiplication:                                                                                                    f(6) = 30 - 2Subtraction:                                                                                                       f(6) = 28
Answer:  28

=========================================================

Explanation:

Everywhere you see an x, replace it with 6

f(x) = 5x - 2

f(6) = 5*6 - 2

f(6) = 30 - 2

f(6) = 28

Remember that 5x is the same as 5*x or "5 times x". So that's why 5x turned into 5*6 after replacing x with 6. After every x is replaced, you follow the order of operations PEMDAS to simplify.

I NEED HELP PLS I FORGOT HOW TO DO THIS HELP

Answers

Answer:

Step-by-step explanation:

how many shapes of size A are in B ?  

I counted 9.5

then just multiply the count * the size of A

got it?

Answer: 28.5cm²_____________________

Step-by-step explanation:

area of shape A = 3cm²

number of A shape in shape B = 9 and half

1 shape A = 3cm²

9 shape A = 3×9 = 27cm²

1 half shape A = 3 ÷ 2 = 1.5cm²

area of shape B = 27cm² + 1.5cm² = 28.5cm²

_____________________Follow me

HURRY PLEASE!! I WILL GIVE BRAINLIEST

Answers

2 because 2^3 is 8
Area is length x width, one side is 4
4 x 6 = 24
24 x 13.5 = 324

A 1/3
B 1/2
C 2
D 3
will give brainliesttt

Answers

Answer: A


Explanation:

Can u guys pls help me on this question and pls explain how u got the answer

Answers

Answer:

Surface area : 143.1

Step-by-step explanation:

Ok so first,

Bottom : 35.1 ft

Front : 36

Right side : 36

Left side : 36

a triangle has angles that measure 85 degrees and 37 degrees what is the measure of the third angle​

Answers

Answer:

58

Step-by-step explanation:

Answer:

58 degrees

Step-by-step explanation:

180-85-37 = 58

What are the slope and y-intercept of the line?

A scatterplot with about 20 points plotted in an upward trend along with a line of best fit that begins at the point zero comma 2 and passes through the point 4 comma 7 point 2.
The slope is approximately 3 and the y-intercept is 2.
The slope is approximately 1.33 and the y-intercept is 2.
The slope is approximately 2 and the y-intercept is 3.
The slope is approximately 2 and the y-intercept is 1.33.

Answers

Answer:

i think it would be B.The slope is approximately 1.33 and the y-intercept is 2.

it would be more clear if you put a graph :)

You have to get the time of the day to do the 2 the y-interception for the top of the beean

Mai’s pencil is 24 cm long. She sharpens it, and it loses 1/8 of its length. How long is her pencil now?

Answers

Answer:

It is 21 cm long

Step-by-step explanation:

1/8 of 24 is 3, so you would subtract 3 from 24. 3*8=24.

{1800*(-90)} /495/(-22)​

Answers

1800 (-90) /495/-(22) =
1736910

Need help on this please

Answers

y-y_o= m(x-x_0)
y-(-4)=-(x-0)
y+4=-x
y=-x-4

Hope it helps

The figure is made up of a cone and a cylinder

To the nearest whole number, what is the volume of this figure?

Use 3.14 to approximate pie ,Round only your final answer to the nearest whole number.

Enter your exact answer in the box​

Answers

Answer:

personally I think the answer is 50.27

area of sector calculations .
help me and show your work please , thank you so much

Answers

Answer:

A = 54.11 unit²

Step-by-step explanation:

Given that :

A = θ/360 * πr²

A = 62/360 * π(10)²

A = 0.1722222 * π * 100

A = 54.105206

A = 54.11 unit²

PLEASE ANSWER THE PIC BELOW

Answers

Answer:

Steel

Step-by-step explanation:

It’s an obvious answer Bc it shows it on the number line

Answer:

it's steel

Step-by-step explanation:

Bc bro it's on the number line like the guy said above me and will you plz give me brainliest in need it bad so i can get to a new rank

What is the value of x in the equation –2.4x = 8.4? –20.16 –3.5 3.5 20.16

Answers

Answer: it’s 3.5

Step-by-step explanation:

Un pueblo tiene 1500 vecinos de los que 975 viven de la pesca. ¿Que tanto por ciento son pescadores?

Answers

Answer:

97.5%

Step-by-step explanation:

Espero que esto ayude, ¿de dónde eres?

El porcentaje sería el siguiente = (975/1500) x 100 % = 65 %

is (24, 7, 25) a Pythagorean triple?

Answers

is (24, 7, 25) a Pythagorean triple?

Step-by-step explanation:

No

What is this help me please

Answers

Answer:

I think it's D

Step-by-step explanation:

I think it's D

PLEASE HELP WITH EXPLANATION

Mary always saved 45% of his salary. When his salary decreased by 20% in April, his savings decreased by $180.
How much was Mary’s salary before the decease?

Answers

Answer:

Step-by-step explanation:

Answer:

Is Mary a guy?  :|  

Step-by-step explanation:

I did this by just a good guess  , not really the right way

2000*.45=900  ( 900 is the old savings)

2000*.2 =400   ( how much her salary went down by )

2000-400=1600 ( new salary )

1600*.45 = 720    ( 45% of new salary is new savings

900-720=180      ( change in savings is 180 , the amount the question asks for)

Mary's old salary was 2,000

It is possible for a system of linear equations to have exactly 2 solutions.

Answers

Answer:

Number of Solutions

Most linear systems you will encounter will have exactly one solution. However, it is possible that there are no solutions, or infinitely many. (It is not possible that there are exactly two solutions.) The word unique in this context means there is a solution, and it's the only one.

Step-by-step explanation:

Hope it helps!

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