Find the area of a circle with radius,
r
= 40cm.
Give your answer rounded to 3 SF.

Answer:

Step-by-step explanation:

if we have a right triangle, and isosceles

c^2=a^2+b^2 , in this case of isosceles, a=b

c^2=2a^2

1^2=[tex]\sqrt{2a^2}[/tex]

1=a[tex]\sqrt{2}[/tex]

a=1/[tex]\sqrt{2}[/tex]=[tex]\sqrt{2}[/tex]/2

Answer:

I think 2

Step-by-step explanation:

10x=20

20 divided by 10= 2

Answer:

x=-2

Step-by-step explanation:

Substitute y=5x+7 into the equation 3x+y=-9

So you will have, 3x+5x+7=-9

3x+5x=8x

8x+7=-9

8x+7-7=-9-7

8x=-16

x=-2

Answer:

They shared $1050.

Step-by-step explanation:

Divide 450/3 = 150

150 * 4 = 600

If Tim gets $450, then Jude will get $600.

450 + 600 = 1050

If Tim gets $400, then Jude will get $600.

Answer:

x+7

Step-by-step explanation:

idek kinda thought that was obvious but who know I could be wrong

The algebraic expression for the verbal expression x more than 7 will be x + 7.

The analysis of mathematical representations is algebra, and the handling of those symbols is logic.

PEMDAS rule means for the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.

The algebraic expression for the verbal expression x more than 7 will be

The numbers will be x  and 7. And the sum of the numbers x and 7 will be given as,

⇒ x + 7

The algebraic expression for the verbal expression x more than 7 will be x + 7.

More about the Algebra link is given below.

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Answer:

The output when x = -9 is f(x) = 187.

Step-by-step explanation:

We are given a function and asked to find the output of that function.

Our standard function is in the form of a quadratic equation.

[tex]ax^2+bx+c=0[/tex]

Let's check for a change in the presentation of the first value in the equation.

[tex]\bold{f(x)} = 2x^2 - 5x - 20\\\\\bold{f(-9)}[/tex]

We see that x becomes -9. We also know that from conventional algebra, we need to make this change throughout the entire equation. Therefore, since we changed the x in f(x), we need to change it in 2x² - 5x - 20 as well.

[tex]f(-9) = 2(-9)^2 - 5(-9) - 20[/tex]

Now, it's time to simplify this function. Let's first simplify the first term of the function: [tex]2(-9)^2[/tex].

Let's follow PEMDAS in order to simplify the term.

P - Parentheses

E - Exponents

M - Multiplication

D - Division

A - Addition

S - Subtraction

When using this acronym, make sure that all operations are performed left to right.

We see that -9 is raised to the power of 2, so we square -9. Otherwise, we carry out the following operation.

[tex]-9 \times -9 = 81[/tex]

Then, we see that 2 is multiplied into this value. Therefore, we multiply 81 by 2.

[tex]81 \times 2 = 162[/tex]

Now, we need to subtract the product of 5 and -9.

[tex]5 \times -9 = -45[/tex]

[tex]162 - - 45 = 207[/tex]

Finally, we subtract 20 from this value.

[tex]207 - 20 = 187[/tex]

Therefore, the value of f(-9) is 187.

[tex] \sf f(x) = 2 {x}^{2} - 5x - 20[/tex]

[tex] \sf f( - 9)[/tex]

[tex] : \implies \sf f( - 9) = [2 \times( { - 9}^{2} )]-[ 5 \times - 9] - 20[/tex]

[tex] : \implies \sf f( - 9) = 2 \times 81 + 45 - 20[/tex]

[tex]: \implies \sf f( - 9) = 162 + 45 - 20[/tex]

[tex] : \implies \sf f( - 9) = 207 - 20[/tex]

[tex]: \implies \bf f( - 9) = 187[/tex]

Answer:

Step-by-step explanation:

So it is 3 by 7 rectangle and diagonal

FE=3 EH=7 so FH=6

Answer:

pog

Step-by-step explanation:

that test :P

Answer:

rhombus

Step-by-step explanation:

Answer:

199

Step-by-step explanation:

49 + 64 + 81 - 36 +25+16

194 - 36 +25 + 16

-36 + 25 + 16

= -11 + 16 = 5

194 + 5 = 199

Answer:

the answer is 4500

Step-by-step explanation:

Answer:

He Bought 4,500 Grams of Cream Cheese.

Step-by-step explanation:

Answer:

1. an equal sign

Step-by-step explanation:

An expression is a mathematical statement that does not contain an equal sign. It cannot be solved for unless the value of the variable is given.

Answer:

1. an equals sign

Step-by-step explanation:

expression does NOT have a equal sign but an equation does have an equal sign.

Answer:

15.2

Step-by-step explanation:

1) First, add all of the numbers together. 1+5+7+9+11+16+18+20+30+35=152.

2) Then, divide this by the amount of numbers. There are 10, so it is 152÷10=15.2

3) The answer is 15.2

9514 1404 393

Answer:

  ∠SAP = 85°

Step-by-step explanation:

The whole is the sum of the parts.

  ∠SAX = ∠SAP + ∠PAX

  142° = ∠SAP + 57° . . . . . . . use the given values in the equation

  ∠SAP = 142° -57° . . . . . . . . subtract 57° from both sides

  ∠SAP = 85°

Answer:

10 is the GCF

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

X = 16

7 x + 14 - 6 x = 30

x + 14 = 30

Answer:

Yoshi applied the rules of signed numbers incorrectly

Step-by-step explanation:

When you multiply 2 negatives, you get a positive.

Answer:

250 hamburgers

Step-by-step explanation:

so if there were 50 less cheeseburgers then I would take 50 away from 450 and I would get 400. And then I divided it by 2. And so 200+50 = 250 so 250 hamburgers and 200 cheeseburgers. I hope this helps and I'm not good at explaining. :)

Answer:

C 803.8 in2

Step-by-step explanation:

Answer:

the answer is C 803.8 in2

Step-by-step explanation:

Answer:

sorry

Step-by-step explanation:

Answer:

$3,685.9

Step-by-step explanation:

Answer

it is 0.5

Step-by-step explanation:

Answer:

rises to the left and rises to the right

Step-by-step explanation:

The end behavior of the graph of f(x) = 3x⁶ + 30x⁵ + 75x⁴ is that it as x → -∞, y → ∞ and as x → -∞, y→ ∞.

A polynomial is defined as a mathematical expression that has a minimum of two terms containing variables or numbers. A polynomial can have more than one term.

The degree of the polynomial function is 6, which is even, and the leading coefficient is positive, so the end behavior of the graph is as follows:

As x approaches negative infinity, both the x⁶ and x⁵ terms become very large positive numbers, and so the value of the function f(x) approaches positive infinity.

As x approaches positive infinity, both the x⁶ and x⁵ terms become very large positive numbers, and so the value of the function f(x) also approaches positive infinity.

Therefore, the end behavior of the graph of f(x) is that it as x → -∞, y → ∞ and as x → -∞, y→ ∞.

Learn more about the polynomial here:

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Answer:

Box 1 is A (top box)

Box 2 is B (middle box)

Box 3 is C (lowest box)

I am not taking computer science, so I am just using visual clues... If this is not worth a lot in your grade, making mistakes is okay. So, you can guess.

Answer:

1/2 times base times height. So you would do 1/2 x 15 x 20 equals....

Step-by-step explanation:

Answer:

16x+21

Step-by-step explanation:

Answer:

Step-by-step explanation:

i took the test hope this helps