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3 years ago

Evaluate the expression for the given value of x.−4x + 7 for x = −4

Mathematics

2 answers:

docker41 [41]3 years ago

5 0

Answer:

Step-by-step explanation:

-4x+7

-4(-4)+7=16+7=23

solmaris [256]3 years ago

5 0

Answer:

Step-by-step explanation:

-4x + 7 =

-4(-4) + 7 =

16 + 7 = 23

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zavuch27 [327]

$s = ut + \frac{1}{2} a {t}^{2} \\ s = 10( \frac{1}{2} ) + \frac{1}{2} ( - 2) {( \frac{1}{2}) }^{2} \\ s = 10( \frac{1}{2} ) + \frac{1}{2} ( - 2)( \frac{1}{4} ) \\ s = 5 + ( - 1)( \frac{1}{4} ) \\ s = 5 + ( - \frac{1}{4} ) \\ s = 5 - \frac{1}{4} \\ s = \frac{20}{4} - \frac{1}{4} \\ s = \frac{19}{4}$

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2 years ago

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OlgaM077 [116]

Step-by-step explanation:

sue = 18 sweets

tony= 18 sweets

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3 years ago

At the gas station, each liter of gas costs $3 but there's a promotion that for every beverage you purchase you save $0.20 on ga

k0ka [10]

Answer:

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Step-by-step explanation:

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3 years ago

Factor x^4+xy^3+x^3+y^3 completely showing work.

babymother [125]

Answer:

Step-by-step explanation:

Hello, please consider the following.

$x^4+xy^3+x^3+y^3\\\\=x^3*x+x*y^3+x^3+y^3\\\\=x(x^3+y^3)+x^3+y^3\\\\\boxed{=(x+1)(x^3+y^3)}\\$

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4 0

3 years ago

Makayla invested $630 in an account paying an interest rate of 5.5% compounded continuously. Assuming no deposits or withdrawals

ivolga24 [154]

Answer:

19.7 or 20 rounded

Step-by-step explanation:

A = $ 1,861.65

A = P + I where

P (principal) = $ 630.00

I (interest) = $ 1,231.65

Continuous Compounding Formulas (n → ∞)

Calculate Accrued Amount (Principal + Interest)

A = Pe^rt

Calculate Principal Amount, solve for P

P = A / e^rt

Calculate rate of interest in decimal, solve for r

r = ln(A/P) / t

Calculate rate of interest in percent

R = r * 100

Calculate time, solve for t

t = ln(A/P) / r

3 0

3 years ago