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fomenos
3 years ago
14

Carisa predicted she answered 9 questions correctly out of 10 on a test. She actually got 8 answers correct. By what percent was

Carisa​'s prediction​ off?
Mathematics
1 answer:
iren [92.7K]3 years ago
7 0
The prediction was 10% off
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What is a half of teaspoon of salt
aliya0001 [1]

2.5 grams of salt and 1000mg of sodium is equal to shalf a teaspoon of salt

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3 years ago
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What is the volume of a square pyramids
frozen [14]

Answer:

\large\boxed{V=75\ in^3}

Step-by-step explanation:

The formula ogf a volume of  a pyramid:

V=\dfrac{1}{3}BH

B - area of a base

H - height

We have a base length a = 5 in and a height H = 9 in.

In the base we have a square. The formula of an area of a square is:

B=a^2

Substitute:

B=5^2=25\ in^2

Calculate the volume:

V=\dfrac{1}{3}(25)(9)=(25)(3)=75\ in^3

7 0
3 years ago
according to the fundemental theorem of algebra, how many roots exist for the polynomial function? f(x) = (x^3-3x+1)^2
Svetradugi [14.3K]

Answer:

6

Step-by-step explanation:

First, we can expand the function to get its expanded form and to figure out what degree it is. For a polynomial function with one variable, the degree is the largest exponent value (once fully expanded/simplified) of the entire function that is connected to a variable. For example, x²+1 has a degree of 2, as 2 is the largest exponent value connected to a variable. Similarly, x³+2^5 has a degree of 2 as 5 is not an exponent value connected to a variable.

Expanding, we get

(x³-3x+1)²  = (x³-3x+1)(x³-3x+1)

= x^6 - 3x^4 +x³ - 3x^4 +9x²-3x + x³-3x+1

= x^6 - 6x^4 + 2x³ +9x²-6x + 1

In this function, the largest exponential value connected to the variable, x, is 6. Therefore, this is to the 6th degree. The fundamental theorem of algebra states that a polynomial of degree n has n roots, and as this is of degree 6, this has 6 roots

3 0
3 years ago
Write an equation and solve.
Reil [10]
My equation was (1230÷3) ×4 ×this is the multiplication sign

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3 years ago
Does anyone know this?
Marina CMI [18]
1.37x10^9 is the correct answer:)
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2 years ago
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