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3 years ago

Please i really need help

Mathematics

1 answer:

Pepsi [2]3 years ago

6 0

Step-by-step explanation:

4×10×2=80

20×10×1=200

20×8×1=160

20×10×1=200

2×20×1=40

10×2×2=40

80+200+160+200+40+40=720

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Simplify (ignore my garbage camera quality ....)

monitta

Answer:

C. 3

Step-by-step explanation:

Given expression is:

$({3^{\frac{1}{7}})^7$

We know that the rules of exponents are used to solve these kind of questions.

When there is exponent on exponent like in this question 1/7 has an exponent of 7 , the exponents are multiplied.

So,

$=3^{(7*\frac{1}{7} )}$

The 7's will be cancelled out and remaining power will be 1

$=3^1\\=3$

Hence, option C is correct ..

5 0

2 years ago

Read 2 more answers

In 3-10 use the distributive property to find each missing factor

Elanso [62]

The missing factor in the equation is -21

<h3>What is a distributive factor?</h3>

The Distributive Property introduces the multiplication operator an existing mathematical statement that involves the addition operator.

From the complete question, the equation is given as:

$6 \times x= (3 \times 7) + (x \times 7)$

Where x represents the missing factor.

So, we have:

$6x= (21) + (7x)$

Remove brackets

$6x= 21 + 7x$

Collect like terms

$6x-7x= 21$

Evaluate the like terms

$-x= 21$

Divide both sides by -1

$x= -21$

Hence, the missing factor in the equation is -21

Read more about the distributive property at:

brainly.com/question/2807928

6 0

2 years ago

Please help :) I have no clue & math isn’t my strong subject.

melisa1 [442]

Equation of a line that is perpendicular to given line is $y=\frac{-7}{4} x+\frac{7}{4}$ .

Equation of a line that is parallel to given line is $y=\frac{4}{7} x-\frac{69}{7}$ .

Solution:

Given line $y=\frac{4}{7} x+4$ .

Slope of this line, $m_1$ = $\frac{4}{7}$

$$\text{Slope of perpendicular line} = \frac{-1}{\text{Slope of the given line} }$

$$m_2=\frac{-1}{m_1}$

$$=\frac{-1}{\frac{4}{7} }$

Slope of perpendicular line, $m_2=\frac{-7}{4}$

Passes through the point (–7, 5). Here $x_1=-7, y_1=5$ .

Point-slope formula:

$y-y_1=m(x-x_1)$

$$y-(-7)=\frac{-7}{4} (x-5)$

$$y+7=\frac{-7}{4} x+\frac{35}{4}$

Subtract 7 from both sides, we get

$$y=\frac{-7}{4} x+\frac{7}{4}$

Equation of a line that is perpendicular to given line is $y=\frac{-7}{4} x+\frac{7}{4}$ .

To find the parallel line:

Slopes of parallel lines are equal.

$m_1=m_3$

$$m_3=\frac{4}{7}$

Passes through the point (–7, 5). Here $x_1=-7, y_1=5$ .

Point-slope formula:

$$y-(-7)=\frac{4}{7} (x-5)$

$$y+7=\frac{4}{7} x-\frac{20}{7}$

Subtract 7 from both sides,

$$y=\frac{4}{7} x-\frac{69}{7}$

Equation of a line that is parallel to given line is $y=\frac{4}{7} x-\frac{69}{7}$ .

7 0

2 years ago

9.6 x 10^9 as a normal number

Alex17521 [72]

Answer:

9,600,000,000

Step-by-step explanation:

I am not sure it right but I hope it's helpful.

7 0

3 years ago

The value of k<br> 4x^2 +20k+k

Wittaler [7]

Step-by-step explanation:

You want the to find the value of k such that the y coordinate of the vertex is 0.

0=x2−6x+k

The x coordinate, h, of the vertex is found, using the following equation:

h=−b2a

h=−−62(1)=3

Evaluate at x = 3:

0=32−6(3)+k

k=9

8 0

2 years ago