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3 years ago

Is this right??? Idk what to do on this question and neither does my mom!

Mathematics

2 answers:

Fed [463]3 years ago

4 0

They are telling you to make inches into feet
I foot equals 12 inches
84 divided by 12 equals 7
Answer is seven

yanalaym [24]3 years ago

3 0

You need to divide 84 by 12.

another way 82/x = 12/1 then cross multiply 12x = 82
final answer: 6.83333-

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Line k passes through the point (1, 5) and is perpendicular to the line y = 3x + 1. Which of the following points does line k al

bearhunter [10]

Answer:

Option A. (4,4)

Step-by-step explanation:

step 1

Find the slope of the line k

we know that

If two lines are perpendicular, then the product of their slopes is equal to -1

$m1*m2=-1$

The slope of the given line is $m1=3$

The slope of the line k is

$m2*(3)=-1$

$m2=-\frac{1}{3}$

step 2

Find the equation of the line k

The equation of the line into point slope form is equal to

$y-y1=m(x-x1)$

we have

$m=-\frac{1}{3}$

$point(1,5)$

substitute the values

$y-5=-\frac{1}{3}(x-1)$

step 3

Verify if the line k pass through the given points

Remember that

If the line passes through a point, then the value of x and the value of y of the point must satisfy the equation of the line

Verify each case

case A) (4,4)

$4-5=-\frac{1}{3}(4-1)$

$-1=-\frac{1}{3}(3)$

$-1=-1$ ----> is true

therefore

The line k pass through the point (4,4)

case B) (-2,-5)

$-5-5=-\frac{1}{3}(-2-1)$

$-10=-1$ -----> is not true

therefore

The line k not pass through the point (-2,-5)

case C) (3,6)

$6-5=-\frac{1}{3}(3-1)$

$1=-\frac{2}{3}$ -----> is not true

therefore

The line k not pass through the point (3,6)

case D) (9,-1)

$-1-5=-\frac{1}{3}(9-1)$

$-6=-\frac{8}{3}$ -----> is not true

therefore

The line k not pass through the point (9,-1)

6 0

3 years ago

Pedro solves the quadratic equation x^2+6x –14 using the quadratic formula. In which step did Pedro make an error?

Nutka1998 [239]

9514 1404 393

Answer:

correct choice is marked

Step-by-step explanation:

The error is in step 2. The square root cannot be distributed to a sum.

3 0

3 years ago

Please answer correctly math problemo

MrMuchimi

Answer:

Step-by-step explanation:

We have to substitute x with 2 and y with 4

when the sign of a operation is not expressed it means that the operation is a

multiplication

So we have

3*2 + 2*(4)^2

6 + 2*(16)

6 + 32

4 0

3 years ago

The area of the base of a rectangular prisim four and three fourths and the height of two and one third what is the volume

VikaD [51]

Data:
$A_{base} = 4 \frac{3}{4} = \frac{4*4+3}{4} = \frac{16+3}{4} \to A_{base} = \frac{19}{4}$

$h (height) = 2 \frac{1}{3} = \frac{3*2+1}{3} = \frac{6+1}{3} \to h (height) = \frac{7}{3}$
$v (volume) = ?$

Formula: $V = A_{b}*h$

Solving:
$V = A_{b}*h$
$V = \frac{19}{4} * \frac{7}{3}$
$V = \frac{133}{12}$
$V = 11.08333....$
$\boxed{\boxed{V \approx 11.08}}\end{array}}\qquad\quad\checkmark$

7 0

3 years ago

Ursula picks carrots and radishes from her garden. She picks

densk [106]

2 1/2 more pounds of carrots.

7 0

3 years ago