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3 years ago

(-7²)×(-2²) is equal to :(a) 14(b) -14(c) 196(d) -196

Mathematics

2 answers:

quester [9]3 years ago

8 0

Answer and Step-by-step explanation:

(-7²)×(-2²)

49 times 4

(a negative number squared becomes a positive number.

-7 squared is the same thing as -7 times -7, which is 49.

-2 squared is the same thing as -2 times -2, which is 4.

C. 196 is the answer.

x 4

_____

196

(40 times 4, + 4 times 9)

( 160 + 36 = 196)

#teamtrees #WAP (Water And Plant)

Ipatiy [6.2K]3 years ago

6 0

Answer:

Step-by-step explanation:

-7 x7 = - 49

-2x2= - 4

-49x-4 = 196

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Shtirlitz [24]

Answer:

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Step-by-step explanation:

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3 years ago

-18 = 5v+7 simplify your answer as much as possible what is the solve for v

Pie

Answer:

v = - 5

Step-by-step explanation:

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3 years ago

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Marina86 [1]

Answer:

<h3>The reason which is incorrect is in Step 2 and reason 2</h3>

Step-by-step explanation:

Given that Logan's equation is $\frac{3}{2}\times (x-10)=50$

<h3>To simplify and find the which reason is incorrect :</h3>

Logan's solution and reasoning for solving an equation are shown below:

Step1 $\frac{3}{2}\times (x-10)=50$

Reason 1: Given

Step2 $\frac{3}{2}\times x-10+10=50+10$

Reason 2: Addition Property of Equality

Step3 $\frac{3}{2}\times x=60$

Reason 3: Simplify

Step4 $\frac{3}{2}\times x \times (\frac{2}{3})=60\times (\frac{2}{3})$

Reason 4: Division Property of Equality

Step5 $x=40$

Reason 5: Simplify

<h3>The reason which is incorrect is in Step 2 and reason 2</h3><h3>The corrected steps are</h3>

Step1 $\frac{3}{2}\times (x-10)=50$

Reason 1: Given

Step2 $\frac{3}{2}\times (x)-\frac{3}{2}\times (10)=50$

Reason 2: Distributive property

Step3 $\frac{3}{2}\times x-15=60$

Reason 3: Simplify

Step4 $\frac{3}{2}\times x-15+15=50+15$

Reason 4: Addition Property of Equality

Step5 $\frac{3}{2}\times x=65$

Reason 5: Simplify

Step6 $\frac{3}{2}\times x \times (\frac{2}{3})=65\times (\frac{2}{3})$

Reason 6: Division Property of Equality

Step7 $x=\frac{130}{3}$

Reason 7: Simplify

<h3 />

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3 years ago

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const2013 [10]

The equation in point-slope form: y - y₁ = m(x - x₁)

slope: m = -2

point: (4, -5) ⇒ x₁ = 4, y₁ = -5

Therefore, the equation of the line in point-slope form:

The equation in slope-intercept form: y = mx + b

Parallel lines has the same slope, so:

y = 4x + 2 ⇒ a = 4

If a line passes through the point <em>(x₁, y₁) </em>then the equation y<em>₁</em> = mx<em>₁</em> + b is true.

(4, 6) ⇒ x₁ = 4, y₁ = 6

So: 6 = 4·4 + b ⇒ b = -10

Therefore the equation:

a = 3

(-1, 1) ⇒ x₁ = -1, y₁ = 1

So: 1 = 3·(-1) + b ⇒ b = 4

The equation:

The product of slopes of perpendicular lines is -1.

2x - 7y = 1 ⇒ 7y = -2x + 1 ⇒ y = -²/₇x + ¹/₇

-²/₇×m = -1 ⇒ m = ⁷/₂

(0, -4) ⇒ x₁ = 0, y₁ = -4

-4 = ⁷/₂·0 + b ⇒ b = -4

The equation:

8 0

3 years ago

(-7²)×(-2²) is equal to :(a) 14(b) -14(c) 196(d) -196​

(-7²)×(-2²) is equal to :(a) 14(b) -14(c) 196(d) -196