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3 years ago

PLS HELP MULTIPLE CHOICE

Mathematics

1 answer:

Delvig [45]3 years ago

8 0

Answer:

I think it is the first and the second one

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Solve the system of equations displayed in the picture.

bagirrra123 [75]

The answer is D) (-1,-12)

Reason:

1) substitute 2x-10 for y in y=4x-8

2) 2x-10=4x-8

3) -2x-10=-8

4) -2x=2

5) x=-1

6) substitute -1 for x in y=2x-10

7) y=(2)(-1)-10

8) y=-12

Answer

x=-1 and y=-12

7 0

3 years ago

Help anyone please i need it

zheka24 [161]

Answer:

The sum is equal to $-905,200$

Step-by-step explanation:

we know that

The formula to calculate the sum is equal to

$Sn=n\frac{(a1+an)}{2}$

In this problem

$n=775$ -----> number of terms

a1 is the first term

$a1=(-3(1)-4)=-7$

an is the last term

$an=(-3(775)-4)=-2,329$

substitute

$Sn=775\frac{(-7-2,329)}{2}=-905,200$

4 0

3 years ago

If f(x) varies directly with x and f(x) = 72 when x = 6, find the value of f(x) when x = 3.

Levart [38]

Answer:

Step-by-step explanation:

Since f(x) varies directly with x, f(x) can be expressed alternatively as \[f(x) = k * x\] where k is a constant value.

Given that f(x) is 72 when the value of x is 6.

This implies, \[72 = k * 6\]

Simplifying and rearranging the equation to find the value of k:

k = \frac{72}{6}

Hence k = 12

Or, \[f(x) = 12 * x\]

When x = 3, \[f(x) = 12 *3 \]

Or in other words, the value of f(x) when x=3 is 36

4 0

3 years ago

Read 2 more answers

What is the remainder of the quantity 5 x cubed plus 7 x plus 5 end quantity divided by the quantity x plus 2 end quantity? Show

jarptica [38.1K]

The remainder of the polynomial equation is -49

<h3>What is a remainder of a polynomial equation?</h3>

The remainder of a quantity in an algebraic expression of a polynomial equation is the remaining amount of the quantity left and can not be divisible by the divisor.

From the given information, we are to find the remainder of the given algebraic equation:

$\mathbf{= \dfrac{5x^3+7x+5}{x+2} }$

Using the long division method, we have:

$\mathbf{= \dfrac{5x^3+7x+5}{x+2} } \implies \mathbf{5x^2 + \dfrac{-10x^2+7x+5}{x+2}}$

Divide by $\mathbf{ \dfrac{-10x^2+7x+5}{x+2}}$ , we have:

$\mathbf{= 5x^2- 10x+ \dfrac{27x+5}{x+2}}$

Divide by $\mathbf{\dfrac{27x+5}{x+2}}$ , we have:

$\mathbf{= 5x^2- 10x+ 27 +\dfrac{-49}{x+2}}$

Learn more about finding the remainder of a polynomial equation here:

brainly.com/question/24978997

#SPJ1

4 0

1 year ago

I know the answer just need someone explain to me how to solve it

Vinvika [58]

The logarithm of a quotient can be written as a difference of logarithms:

$\log_3\left(\dfrac uv\right) = \log_3(u) - \log_3(v)$

You can also think of this as a combination of the product-to-sum and reciprocal/power properties of logarithms:

$\log_3\left(\dfrac uv\right) = \log_3\left(u \times \dfrac1v\right) = \log_3(u) + \log_3\left(\dfrac1v\right) = \log_3(u) - \log_3(v)$

To summarize,

$\log_b(mn) = \log_b(m)+\log_b(n)$

$\log_b\left(\dfrac mn\right) = \log_b(m) - \log_b(n)$

$\log_b\left(m^n\right) = n \log_b(m)$

3 0

2 years ago