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3 years ago

Can somebody plz help me [-5+(-7)]^2-(7+3)^2

Mathematics

2 answers:

Firdavs [7]3 years ago

8 0

Answer:

$\boxed{44}$

Step-by-step explanation:

$[-5+(-7)]^2-(7+3)^2$

Resolving Parenthesis

$(-5-7)^2-(10)^2\\(-12)^2-100\\144-100$

=> 44

Artemon [7]3 years ago

7 0

Answer:

$\boxed{44}$

Step-by-step explanation:

$[-5+(-7)]^2-(7+3)^2$

Solve for brackets first.

$[-12]^2-(10)^2$

Solve the exponent or power.

$144-100$

Subtract the numbers.

$=44$

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I need help pls this is to confusing

OleMash [197]

Answer: the value of a is less than b because its to the left

Step-by-step explanation:

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3 years ago

What is the value of w in this equation? <br><br> 15 + w = 75

uranmaximum [27]

Answer:

$w=60$

Step-by-step explanation:

$15+w=75$

Subtract 15 from both sides of the equation.

$15+w-15=75-15$

$w=60$

6 0

3 years ago

Read 2 more answers

Krystal’s poster project for reading class is 2 feet high and 1 1 2 feet wide. Her friend Victoria’s poster is 4 feet high and 1

Bess [88]

The area of Victoria's poster is twice the area of Krystal's poster.

<h3>How compare the areas of two similar posters</h3>

The two areas are shown in the image attached below. Each poster represents a rectangle and the ratio between the two areas ( $r_{A}$ ), no unit, is defined by the following formula:

$r_{A} = \frac{w_{V}\cdot h_{V}}{w_{K}\cdot h_{K}}$ (1)

Where:

$w_{V}$ - Width of Victoria's poster, in feet.
$h_{V}$ - Height of Victoria's poster, in feet.
$w_{K}$ - Width of Krystal's poster, in feet.
$h_{K}$ - Height of Krystal's poster, in feet.

If we know that $h_{V} = 4\,ft$ , $w_{V} = 1.5\,ft$ , $h_{K} = 2\,ft$ and $w_{K} = 1.5\,ft$ , then the ratio between the two areas is:

$r_{A} = \frac{(4)\cdot (1.5)}{(2)\cdot (1.5)}$

$r_{A} = 2$

The area of Victoria's poster is twice the area of Krystal's poster. $\blacksquare$

To learn more on ratios, we kindly invite to check this verified question: brainly.com/question/1504221

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2 years ago

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Fantom [35]

Answer:

StartFraction 25 Over 9 EndFraction

Step-by-step explanation:

$\bigg( \huge{\frac{ {3}^{2}a ^{ - 2} }{3 {a}^{ - 1} }} \bigg)^{k} \\ \\ = \bigg( \huge{\frac{ 9a }{3 {a}^{ 2} }} \bigg)^{k} \\ \\ = \bigg( \huge{\frac{ 3 }{ {a}}} \bigg)^{k} \\ \\ = \bigg( \huge{\frac{ 3 }{ {5}}} \bigg)^{ - 2} \\ \\ = \bigg( \huge{\frac{ 5 }{ {3}}} \bigg)^{ 2} \\ \\ = \huge{\frac{ 25 }{ {9}}}$

3 0

3 years ago

Read 2 more answers

Identify the value that is NOT in range of the piecewise function. <br> A. -3<br> B. -2<br> C. 3

Blizzard [7]

Answer:

Option A i.e. y = - 3 is not in range of the piece wise function graphed.

Step-by-step explanation:

The range of a function y = f(x) is given by the possible values of y for the possible domain (x-values) of the function.

Now, it is clear from the graph of the function that the value of y never goes below y = - 2.

The graph is drawn in such a way that any value of y less than - 2 and greater than - ∞ is not in the range of the function.

Therefore, option A i.e. y = - 3 is not in range of the piecewise function graphed. (Answer)

7 0

3 years ago