MATHEMATICS HIGH SCHOOL

ordered pairs in which of these formats do not have to represent a function? (Length of side of a square,perimeter of square)

Answers

Answer 1

Answer:

Answer: the answer is base of triangle, height of triangle

got it wrong because of that other guy answers was wrong

Answer 2

Answer:

Answer:

perimeter of square

Step-by-step explanation:

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The measures of the angles of a triangle are shown in the figure below. Solve for x.

An angle measures 142° less than the measure of its supplementary angle. What is the measure of each angle?

Answers

Answer:

19° and 161°

Step-by-step explanation:

A - an angle

S - its suplementary angle

A = S - 142°

Suplementary angles add to 180° so:

A + S = 180°

S - 142° + S = 180°

2S = 322°

S = 161°

A = 161° - 142° = 19°

What is the value of the function when x = −2? y =

A graph of a function. The function graph goes through point negative 2, negative 3 and point negative 3, 0.

Answers

(x,y)
if the point (-2,-3) is on there
x=-2
y=-3

y=-3

On the graph of the equation 5x – 2y = 20, what is the value of the y-intercept?

Answers

The slope-intercept form: y = mx + b

m - the slope
b - the y-intercept

5x - 2y = 20 |subtract 5x from both sides

-2y = -5x + 20 |divide both sides by (-2)

y = 2.5x - 10

Answer: The y-intercept b = -10 ⇒ (0;-10)

Find the product using number line:a) 4 × (-2)

Answers

Answer:

-8 is the answer.

Step-by-step explanation:

Move -2 steps (i.e. move two steps to the left) four times. You jump into these numbers.

-2, then -4, then -6, then finally -8.

Suppose ∠A and ∠B are complementary angles, m∠A = (3x + 5)°, andm∠B = (2x – 15)°. Solve for x and then find m∠A and m∠B.

Answers

m∠A + m∠B = 90
(3x + 5) + (2x - 15) = 90
(3x + 2x) + (5 - 15) = 90
5x - 10 = 90
+ 10 + 10
5x = 100
5 5
x = 20

m∠A = 3x + 5
m∠A = 3(20) + 5
m∠A = 60 + 5
m∠A = 65

m∠B = 2x - 15
m∠B = 2(20) - 15
m∠B = 40 - 15
m∠B = 25

m∠A + m∠B = 90

$(3x + 5) + (2x - 15) = 90$

$(3x + 2x) + (5 - 15) = 90$

$5x - 10 = 90$

$5x - 10 +10 = 90+10$

$5x = 100$

$5x/5 = 100/5$ $Divide \ both \ sides \ by \ 5$

$x = 20$    $Solutions$

m∠A = $3x + 5$    $(x=20)$

m∠A = $3(20) + 5$ $Substitute \ x \ for \ 20$

m∠A = $60 + 5$    $Simplify$

m∠A = $65$

m∠B = $2x - 15$

m∠B = $2(20) - 15$

m∠B = $40 - 15$

m∠B = $25$