All categories

3 years ago

1. Find the value of x.

Mathematics

1 answer:

Kisachek [45]3 years ago

4 0

Answer:

x = 14

Step-by-step explanation:

Assuming the triangles are similar then the corresponding sides are in proportion, that is

$\frac{15}{x-4}$ = $\frac{12}{8}$ = $\frac{3}{2}$ ( cross- multiply )

3(x - 4) = 30 ( divide both sides by 3 )

x - 4 = 10 ( add 4 to both sides )

x = 14

You might be interested in

What is 6 1/8 minus 2 1/12

Bezzdna [24]

Answer:

4 1/24

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A triangle has side lengths x, 10, and 7. What are the possible values of x?

rewona [7]

Answer:

7,12.2

Step-by-step explanation:

100+49=149

√149≈12.2

x^2+49=100

x^2=51

7 0

3 years ago

Can any one help me and explain please

dangina [55]

$(2x - 5)( 4 {x}^{2} - 3x + 1) = \\ = 8 {x}^{3} - 6 {x}^{2} + 2x - 20 {x}^{2} + 15x - 5 = \\ = 8 {x}^{3} - 26 {x}^{2} + 17x - 5$

8 0

3 years ago

Evaluate the following expression. Log8 64

viktelen [127]

Answer:

Step-by-step explanation:

Using the rule of logarithms

• $log_{b}$ x = n ⇔ x = $b^{n}$

let $log_{8}$ 64 = n, then

64 = $8^{n}$

note that 64 = 8², thus

8² = $8^{n}$ ⇒ n = 2

6 0

3 years ago

A cup of cereal has 12 grams of fiber, which is 40% of the recommended daily amount.

Papessa [141]

The recommended daily amount of fiber is 30 grams.

Step-by-step explanation:

Quantity of fiber in one cup = 12 grams

It is 40% of our daily recommended amount.

Let,

x be the quantity of fiber recommended daily.

40% of x = 12

$\frac{40}{100}*x=12\\$

$0.4x=12$

Dividing both sides by 0.4

$\frac{0.4x}{0.4}=\frac{12}{0.4}\\x=30$

The recommended daily amount of fiber is 30 grams.

Keywords: percentage, division

Learn more about percentages at:

#LearnwithBrainly

4 0

3 years ago