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3 years ago

Write a percent proportion where the part and the whole are known

Mathematics

2 answers:

Len [333]3 years ago

7 0

Answer:

Step-by-step explanation:

Mary bought 20 oranges in a store, 5 of them she used for a cake. How much percent oranges did she use?

Juliette [100K]3 years ago

6 0

He is correct I checked his answer

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23. What is an equation in point-slope form for the line perpendicular to y = 3x - 11 that contains (-1, 3)?

Vika [28.1K]

For a line perpendicular to another on the coordinate grid, the slope of one would be a negative inverse of the other.

The equation of the line given here is;

$y=3x-11$

The slope of the line in this equation is the coefficient of x, that is, the slope is 3.

Therefore, this simply means the slope of the line perpendicular to this one would be;

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

Note that this is the inverse of the slope m = 3, with a negative sign.

The equation of a line in point slope form is given as;

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

Where the variables are;

$\begin{gathered} (x_1,y_1)=(-1,3) \\ m=-\frac{1}{3} \end{gathered}$

Substituting for the known values, we can now write out the equation in point-slope form as follows;

$\begin{gathered} y-y_1=m(x-x_1) \\ y-3=-\frac{1}{3}(x-\lbrack-1\rbrack) \\ y-3=-\frac{1}{3}(x+1) \end{gathered}$

ANSWER:

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

3 0

2 years ago

PLS HURRY!! PLS solve:-10k2+7

Dvinal [7]

Answer:

Degree: 2

Polynomial type: Quadratic

Step-by-step explanation:

One is asked to identify the degree and type of polynomial when given the following expression:

$-10k^2+7$

The degree of a polynomial refers to the exponent to which it is raised. In essence, the largest exponent in the expression. In this case, the largest exponent in this polynomial is (2). An expression to the second degree is referred to as a quadratic expression.

5 0

4 years ago

Find the product. (2x+3)(2x+3)

Len [333]

Answer:

=4x2+12x+9

hope it helps you!

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Solve for x (-4/3) x - 6 = -26 A. −27 B. −15 C. 15 D. 27

andre [41]

$- \dfrac{4}{3} x - 6 = -26$

//Add 6 to both sides:
$- \dfrac{4}{3} x = -20$

//Multiply by -1 on both sides:
$\dfrac{4}{3} x = 20$

Multiply by 3 on both sides:
$4x = 60$

Divide by 4 on both sides:
$x = 15$

-----------------------------------------
Answer: x = 15 (Answer C)
-----------------------------------------

5 0

3 years ago

Read 2 more answers

Plsssssssssssssssssssssssssssssss help

Semenov [28]

Answer:

Solution,

<ABE+<ABC=180

<ABE=180-97

<ABE=83°

<ABC=<ACB=83°

<ABC+<ACB+<CAB=180

<CAB=180-83-83

<CAB=14

<DAC+<CAB=180

<DAC+14=180

<DAC=180-14

<DAC(X)=166°

Hope this helps...

Good luck on your assignment...

7 0

4 years ago