What is the value of the expression below when x = –2?5 + 3(x – 7) – (x + 1)

A.–23
B.–7
C.–21
D.-5

Answers

Answer 1

Answer: The value of the expression is -21.

Answer 2

Answer: 5 + 3(x-7) - (x+1)

5 + 3(-2-7) - (-2+1)

5 + 3(-9) - (-1)

5 -27 + 1

-21

The answer is C.

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Help!The _______ is the key to deriving the equations for four conic sections.

Midpoint formula

Pythagorean theorem

Distance formula

Answers

Answer:

The correct answer is Distance Formula

Step-by-step explanation:

The shape of the conics in the conic section is characterized by a factor called eccentricity of the conic and further derivations are done using this factor.

And the eccentricity of the conics can be calculated by taking the center-to-focus distance and dividing it by the semi-major axis distance. So, to find the eccentricity of the conic, one must know how to apply the distance formula.

Hence, Distance Formula is the key to deriving the equations for conic sections

Answer:

answer is Distance Formula

Step-by-step explanation:

The sum of two consecutive even integers is 226. What is the larger integer?

Answers

114. This would make 112 the smaller one114+112-------226

114

BECAUSE...
1st integer=n
n+1
n+(n+2)=226
2n+2=226
n=112
larger would be n+2=114

Find the balance in the account. $2,500 principal earning 4%, compounded quarterly, after 4 yearsA. $40,000.00

B. $41,600.00

C. $2,924.65

D. $2,931.45

Answers

Answer:

The balance in the account is $2931.45 .

Option (D) is correct.

Step-by-step explanation:

Formula

$Amount = P(1 +(r)/(4))^(4t)$

Where P is the principle , r s the rate of interest in the decimal form and t is the time in years .

As given

The account. $2,500 principal earning 4%, compounded quarterly, after 4 years.

P = $2500

4% is written in the decimal form

$= (4)/(100)$

= 0.04

r = 0.04

t = 4 yeas

Put all the values in the formula

$Amount = 2500(1 +(0.04)/(4))^(4* 4)$

$Amount = 2500(1 +(0.04)/(4))^(16)$

$Amount = 2500(1 +0.01)^(16)$

$Amount = 2500(1.01)^(16)$

$Amount = 2500* 1.17258$

Amount = $2931.45

Therefore the balance in the account is $2931.45 .

Option (D) is correct.

Hello there,

A(4) = 2500(1.01)^16
----
A(4) = 2500*1.1726
----
A(4) = $2931.45

Hope this helps!

What is the definition of significant digits?

Answers

Answer:

Digits that should be written when doing calculations

-by-step explanation:

What is the product?

2x(x – 4)

Answers

Keywords:

Product, factors, polynomial, distributive property

For this case we must find the product of two factors of a polynomial. To do this, we must apply the distributive property, which states: $a (b + c) = ab + ac.$

So:

$2x (x - 4) = 2x * x-2x * 4\n2x (x - 4) = 2x ^ 2-8x$

Thus, the product of $2x (x - 4)$ is: $2x ^ 2-8x$

Answer:

The product of $2x (x - 4)$ is: $2x ^ 2-8x$

Answer:

The product of $2x(x- 4)=2x^2-8x$

Step-by-step explanation:

Given : Expression $2x(x-4)$

To find : The product of the expression

Solution :

To find the product of the expression we apply distributive property in this

Distributive property $a(b+c)=ab+ac$

Where a= 2x, b=x, c=-4

$2x(x- 4)=2x(x)+2x(-4)$

$2x(x-4)=2x^2-8x$

Therefore, The product of $2x(x-4)=2x^2-8x$

Kari and Julie are practicing for basketball tryouts. Kari makes 3 less than twice as many baskets as Julie. Write an expression with two terms for the number of baskets that Kari makes. Explain how you found your expression