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3 years ago

Please help me with all of this and show all your work.

Mathematics

1 answer:

Serga [27]3 years ago

5 0

Answer:

Em, I know this is about math but this is the only way I can tell u that u need to go the "Nikko, Blue, And Tsuki padlet right now... before is too late.

Step-by-step explanation:

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If 3 quarts of paint are needed for 50 ft of fence, how many quarts are needed for 300 ft of fence?

Zina [86]

Answer:

Step-by-step explanation:

First, you would do a proportion

$\frac{3}{50}$ = $\frac{x}{300}$

Then you would cross multiply, getting 50x=900.

After that, you would do 900/50, which is 18.

5 0

3 years ago

The length of a rectangle is 4 more than half the width. Which equation could represent the area of the rectangle in terms of th

frosja888 [35]

Answer:

let length be x and breadth be y

by question

L=4×1/2×B

L = 2B

now

Area of rectangle=L×B

2B ×B

2B^2

Is it correct? ,I actually tried to solve it

3 0

3 years ago

The apothem is _____ a perpendicular bisector of each side of a regular polygon. A. sometimes B. never C. always D. often

timama [110]

The apothem is C. always <span>a perpendicular bisector of each side of a regular polygon. </span>

4 0

4 years ago

Multiple choice please answer please

tankabanditka [31]

From the exterior angle theorem, we have $6x=2x+80,$ so $\boxed{x=20^\circ}.$

3 0

3 years ago

Math help Please!!!!

GalinKa [24]

Part A. What is the slope of a line that is perpendicular to a line whose equation is −2y=3x+7?

Rewrite the equation −2y=3x+7 in the form $y=-\dfrac{3}{2}x-\dfrac{7}{2}.$ Here the slope of the given line is $m_1=-\dfrac{3}{2}.$ If $m_2$ is the slope of perpendicular line, then

$m_1\cdot m_2=-1,\\ \\m_2=-\dfrac{1}{m_1}=\dfrac{2}{3}.$

Answer 1: $\dfrac{2}{3}$

Part B. The slope of the line y=−2x+3 is -2. Since $-\dfrac{3}{2}\neq -2\quad \text{and}\quad \dfrac{2}{3}\neq -2,$ then lines from part A are not parallel to line a.

Since $-2\cdot \left(-\dfrac{3}{2}\right)=3\neq -1\quad \text{and}\quad -2\cdot \dfrac{2}{3}=-\dfrac{4}{3}\neq -1,$ both lines are not perpendicular to line a.

Answer 2: Neither parallel nor perpendicular to line a

Part C. The line parallel to the line 2x+5y=10 has the equation 2x+5y=b. This line passes through the point (5,-4), then

2·5+5·(-4)=b,

10-20=b,

b=-10.

Answer 3: 2x+5y=-10.

Part D. The slope of the line $y=\dfrac{x}{4}+5$ is $\dfrac{1}{4}.$ Then the slope of perpendicular line is -4 and the equation of the perpendicular line is y=-4x+b. This line passes through the point (2,7), then