All categories

3 years ago

BRAINLIEST. NEED HELP NOW!!! What is the value of x?

Mathematics

1 answer:

Arturiano [62]3 years ago

3 0

Answer:

x=10

Step-by-step explanation:

these are similar triangles

8 12

------ = -----------

x+4 2x+1

using cross products

8* (2x+1) = 12(x+4)

distribute

16x + 8 = 12x+48

subtract 12x from each side

16x-12x +8 = 12x-12x+48

4x+8 = 48

subtract 8 from each side

4x+8-8 = 48-8

4x = 40

divide by 4

4x/4 = 40/x

x =10

You might be interested in

5 decades 4 years 3 months -2 decades 5 years 6 months =

marysya [2.9K]

Answer:

28.75 years

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Please help me photo include

nikklg [1K]

Answer:

$\frac{-117}{10}$

Step-by-step explanation:

1) Change the mixed fractions into improper fractions:

$-3\frac{1}{5} + (-8\frac{1}{2} )\\= \frac{-16}{5} - \frac{17}{2}$

2) Multiply the first fraction by 2/2 and the second fraction by 5/5 in order to create common factors on the denominator (You can do this because you are essentially multiplying by one, for example 2/2 = 1):

$\frac{-16}{5} *\frac{2}{2} - \frac{-17}{2} * \frac{5}{5} \\ =\frac{-32}{10} - \frac{85}{10}$

3) Simplify the numerator(top part) while keeping the denominator(bottom part) the same:

$\frac{-32}{10} -\frac{85}{10} \\\\=\frac{-32 - 85}{10}\\ \\= \frac{-117}{10}$

5 0

3 years ago

If Vector u=(5,-7) and v=(-11,3), 2v-6u=_____ and ||2v-6u||≈_____

victus00 [196]

Part 1: Correct.

Part 2

$\sqrt{(-52)^2 + 48^2} \approx 70.77$

8 0

2 years ago

Help me please!!! :(

lana66690 [7]

Answer:

the greatest common factor is 5^2 * 7^3

(I think!!!)

3 0

3 years ago

The distance from the center of a circulartrashcan to the edge of the trashcan is 15 inches.What is the area of the top of the t

Black_prince [1.1K]

Answer:

706.95in²

Step-by-step explanation:

This problem bothers on the mensuration of solid shapes, a cylinder

Step one

The trash can has a cylindrical shape

The distance from the center to the edge is the radius r= 15in

Step two

Area of top (circular ) = πr²

A= 3.142*15²

A= 3.142*225

A= 706.95in²

5 0

3 years ago