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3 years ago

Please I need help ASAP!! What is the total area of the picture above?

Mathematics

1 answer:

Luden [163]3 years ago

6 0

Answer:

80 ft.

Step-by-step explanation:

When finding the total area of two rectangles, you must find the area of each rectangle, then add the products.

6 x 7 = 56

8 x 3 = 24

56 + 24 = 80

Adding the unit: 80 ft.

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What is the inequality for -2<7+x

mario62 [17]

Answer:

x >-9

Step-by-step explanation:

3 0

3 years ago

All Food City oranges are normally $3 per pound, but this week they are on sale for $2 per

stepladder [879]

Answer:

33.33%

Step-by-step explanation:

The oranges have decreased by one dollar per pound so you have to find the percentage of 3 that is 1. To do this is 1 over 3 multiplied by 100%

= $\frac{1}{3} \\$ * 100%

And this will give you 33.33%

4 0

3 years ago

Find the minimum value of the function f(x)=x^2+5x-6

mash [69]

<h3><u>Explanation</u></h3>

Method 1 (Formula)

$\begin{cases}h = - \frac{b}{2a} \\ k = \frac{4ac - {b}^{2} }{2a} \end{cases}$

The vertex of Parabola is the maximum/minimum point depending on the value of a.

Find Vertex

<u>h-value</u>

$h = - \frac{5}{2(1)} \\ h = - \frac{5}{2}$

<u>k-value</u>

$k = \frac{4(1)( - 6) - {(5)}^{2} }{4(1)} \\ k = \frac{ - 24 - 25}{4} \\ k = \frac{ - 49}{4} \\ k = - \frac{49}{4}$

The minimum value is the value of k. Therefore the minimum value is - 49/4 at x = -5/2.

Method 2 (Derivative)

This is Calculus method. We simply differentiate the function then substitute y' = 0.

Differentiate Function

$f'(x) = 2 {x}^{2 - 1} + {5x}^{1 - 1} - 0 \\ f'(x) = 2x + 5$

Substitute f'(x) = 0

$0 = 2x + 5 \\ - 5 = 2x \\ - \frac{5}{2} = x$

Substitute x = -5/2 in the original equation.

$f(x) = {( - \frac{5}{2} )}^{2} + 5( - \frac{5}{2} ) - 6 \\ f(x) = \frac{25}{4} - \frac{25}{2} - 6 \\ f(x) = \frac{25}{4} - \frac{50}{4} - \frac{24}{4} \\ f(x) = \frac{25}{4} - \frac{74}{4} \\ f(x) = - \frac{49}{4}$

<h3><u>Answer</u><u /></h3>

<u> $\sf{the \: \: minimum \: \: value \: \: is \: \: - \frac{49}{4} \: \: at \: \: x = - \frac{5}{2} }$ </u>

4 0

3 years ago

Plz help me!!! 56 points and brainliest!!!

dsp73

Answer:

For this equation to be true, a must = 13 and b must = 10 + 2i.

Step-by-step explanation:

First combine the numerators: 3 + 5 + 2i + 2, or 10 + 2i.

Next, multiply the denominators: 4 + 9 = 13

Then rewrite the original equation as:

10 + 2i a

---------- * ---- = 1

13 b

For this equation to be true, a must = 13 and b must = 10 + 2i.

4 0

3 years ago

What is part A and B??

mars1129 [50]

Part A : 1. 4 batches of brownies and 1 batch of cookies
2. 3 batches of brownies and 3 batches of cookies
3. 7 batches of cookies and 1 batch of brownies

8 0

3 years ago