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3 years ago

Can you please help!! i’m timed!! giving brainliest and 100 points! ALSO EXPLAIN

Mathematics

2 answers:

iragen [17]3 years ago

8 0

Answer:

Surface Area = 15.2 × 23

= 349.6 ft^2

Convert into cm^2

349.6 × 30.48^2= 324,789.02784 cm ^2

maksim [4K]3 years ago

6 0

Answer:

Option 3

Step-by-step explanation:

Paint required is equal to the surface area of the wall

Area = 15.2 × 23

= 349.6 ft²

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Can anyone help me with number 3?

Firdavs [7]

104,976 square feet you do 324 x 324, because its 324 to the 2 power.

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2 years ago

Two lines are perpendicular when... the product of their slope is -1, the product of the slope is greater than 0, they have the

Soloha48 [4]

The answer is the product of their slope is -1.

First, let's break this down. Perpendicular lines are line with opposite reciprocal slopes. Opposite meaning the inverse sign and reciprocal meaning flipped.

For instance,

If a line had the slope of 5, its inverse would have a slope of -1/5.

Now, if we multiply these numbers together,

5 * -1/5 = -1

The 5's cancel out.

This works for any two perpendicular lines

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3 years ago

A, B, and C are collinear, and B is between A and C. The ratio of AB to BC is 1:4.

schepotkina [342]

Let point C has coordinates $(x_C,y_C).$ Consider vectors

$\overrightarrow{AB}=(x_B-x_A,y_B-y_A)=(8-9,6-9)=(-1,-3),\\ \\\overrightarrow{BC}=(x_C-x_B,y_C-y_B)=(x_C-8,y_C-6).$

Since the ratio AB to BC is 1:4, you have that

$\dfrac{-1}{x_C-8}=\dfrac{1}{4}\quad \text{and}\quad \dfrac{-3}{y_C-6}=\dfrac{1}{4}.$

Find $x_C$ and $y_C:$

$x_C-8=-4,\\ \\x_C=-4+8=4,\\ \\y_C-6=-3\cdot 4=-12,\\ \\y_C=-12+6=-6.$

Answer: C(4,-6)

7 0

2 years ago

Read 2 more answers

The ratio of the angle measures in a triangle is 3 : 5 : 7. What are the measures of the angles of the triangle?

NeTakaya

Answer:

36, 60, 84

Step-by-step explanation:

3+5+7=15

180/15=12

12*3=36

12*5=60

12*7=84

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2 years ago

Which lines in the graph have a slope greater than 1 but less than 2?

lapo4ka [179]

Answer:

Lines 3 and 4

Step-by-step explanation:

Let's examine the slope of each of the given lines to have the exact value and be able to answer the question. We use the definition of: $slope=\frac{rise}{run}$