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3 years ago

Find the Value of x. 읽 28 20 0 10

Mathematics

1 answer:

lions [1.4K]3 years ago

8 0

Answer:

x =28

Step-by-step explanation:

We have similar triangles, so we can use ratios

12 8

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

12+30 x

Using cross products

12x = 8*(42)

12x = 336

Divide by 12

12x/12 = 336/12

x =28

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What are the zeros of (x-2)(x^2-9)

WARRIOR [948]

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3 years ago

David will spend at most $39 on gifts. So far, he has spent $22. What are the possible additional amounts he will spend? Use c f

iren2701 [21]

Answer:

$c\leq \$17$

Step-by-step explanation:

Let

c -----> the additional amount (in dollars) David will spend

we know that

The word " at most" in this context means "less than or equal to"

The amount David has spent plus possible additional amounts he will spend must be less than or equal to $39

The inequality that represent this situation is

$22+c\leq 39$

solve for c

subtract 22 both sides

$c\leq 39-22$

$c\leq \$17$

The maximum amount he could spend is $17

7 0

3 years ago

When a number is added to 1/5 of itself, the result is 24. The equation that models this problem is n +1/5 n = 24. What is the v

Lady_Fox [76]

For this case we must find the value of n of the following equation:

$n + \frac {1} {5} n = 24$

Taking common factor "n" from the left side of the equation we have:

$n (1+ \frac {1} {5}) = 24\\n \frac {6} {5} = 24$

Multiplying by 5 on both sides of the equation:

$6n = 120$

Dividing between 6 on both sides of the equation:

$n = 20$

Thus, the value of n is 20.

Answer:

$n = 20$

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3 years ago

Read 2 more answers

A room that is 5 meters long has an area

Sveta_85 [38]

Answer:

Breadth=x+2

Step-by-step explanation:

$Solution,\\\\Length(l)=5m\\\\Area=5x+10m^{2} \\\\Breadth(b)=?\\\\As,\\\\Area=l*b\\\\5x+10=5*b\\\\b=\frac{5x+10}{5}\\\\b=\frac{5x}{5} +\frac{10}{5} \\\\b=x+2$