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3 years ago

Write an expression to represent the sum of three times the square of a number and .

Mathematics

1 answer:

aleksklad [387]3 years ago

7 0

Answer:

3x^2-7

-7 is the constant

3 is the coefficient

x is the variable

Step-by-step explanation:

(3x^2)+(-7)

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Similar right triangle

adoni [48]

Answer: 6.25

Step-by-step explanation:

Because corresponding sides of similar triangles are proportional,

$\frac{x}{2.5}=\frac{6+4}{4}\\\\x=2.5\left(\frac{6+4}{4} \right)=\boxed{6.25}$

3 0

2 years ago

Quesuon 10 of 10

Bad White [126]

Answer:

(p, q) is (2, 5)

Step-by-step explanation:

Given the expression

x^2 + 3x - 10

Factorize;

x^2 + 5x - 2x - 10

x(x+5) - 2(x+5)

(x-2)(x+5)

Comparing with (x + p)(x + 9).

x+2 = x+ p

x-x+2 = p

2 = p

p = 2

Similarly;

x+5 = x+q

x-x+5 = q

5 = q

q= 5

Hence (p, q) is (2, 5)

7 0

3 years ago

8) What is the difference of 2x2 - 4x + 6 and 5x2 + 8x - 2? I will mark brainlist

MariettaO [177]

Answer:

-3x² - 12x + 8

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Distributive Property

Algebra I

Terms/Coefficients

Step-by-step explanation:

Step 1: Define

Identify

2x² - 4x + 6 - (5x² + 8x - 2)

Step 2: Simplify

(Parenthesis) Distribute negative: 2x² - 4x + 6 - 5x² - 8x + 2
Combine like terms: -3x² - 12x + 8

3 0

2 years ago

Does anyone know this? I think its B? Am i correct?

Ber [7]

You are correct my mom is a teacher and she said you are

8 0

3 years ago

Read 2 more answers

A random sample of 11 days were selected from last year's records maintained by the maternity ward in a local hospital, and the

EleoNora [17]

Answer: ( Min = 0 , $Q_1=1$ , $Q_2=3$ , $Q_3=7$ , Max = 10 )

Step-by-step explanation:

Given : A random sample of 11 days were selected from last year's records maintained by the maternity ward in a local hospital, and the number of babies born each day of the days is given below:

3 7 7 10 0 7 1 2 5 3 0

We first arrange them in increasing order , we get

0 0 1 2 3 3 5 7 7 7 10

Here , N= 11

Now , we can see that

Minimum value = 0

Maximum value = 10

First quartile $Q_1$ = $(\dfrac{N+1}{4})^{th}\ term=(\dfrac{12}{4})^{th}\ term = 3^{rd} term =1$

Second quartile $Q_2$ = Median = Middlemost number = 3

Third quartile $Q_3$ = $(\dfrac{3(N+1)}{4})^{th}\ term=(\dfrac{36}{4})^{th}\ term$

$= 9^{th} term =7$

∴ The required five number summary : ( Min = 0 , $Q_1=1$ , $Q_2=3$ , $Q_3=7$ , Max = 10 )

7 0

2 years ago