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Romashka-Z-Leto [24]

3 years ago

12

Simplify the expression.

1 answer:

Andru [333]3 years ago

3 0

Answer:

-6+3 $\sqrt{5$

Step-by-step explanation:

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Two thirds a number plus 4 is 7

Westkost [7]

Lets call the number 'n'
plus means addition
is means the equal sign

so that as an expression would be $\frac{2}{3}$ n+4=7

4 0

3 years ago

Read 2 more answers

How tall is the goal post if its shadow is 18ft. The height of the flagpole is 20 ft and its shadow is 8 ft.?

tamaranim1 [39]

You can set up an inequality to solve this. You can either do big to small --> $\frac{x}{18} = \frac{20}{8}$ or small to big --> $\frac{x}{18} = \frac{8}{20}$ . I'm going to be using big to small because I think it's a little easier.

$\frac{20}{8} = \frac{x}{18}$

Cross multiply and you will get:

$360 = 8x$

Isolate x:

$x = \frac{360}{8}$

x = $\frac{90}{2}$

x = 45

The goal post is 45 feet tall. Hope this helped. Good luck. : )

6 0

4 years ago

I need help. Whats the answer?

yulyashka [42]

By the pythagorean theorem a^2 + b^2 = c^2 so if we do 8^2 + 6^2 it is 100

3 0

3 years ago

If a 4 x 16 riangle has the same area as a square, what is the length of a side of the square

m_a_m_a [10]

Answer: $\bold{4\sqrt2}$

<u>Step-by-step explanation:</u>

$A_{triangle}=\bigg(\dfrac{1}{2}\bigg)b\times h$

$A_{triangle}=\bigg(\dfrac{1}{2}\bigg)4\times 16$

$=\bigg(\dfrac{1}{2}\bigg)64$

$=32$

$A_{square}= s^2$

$32 = s^2$

$\sqrt{32}=s$

$\sqrt{\underline{2\cdot 2}\cdot \underline{2\cdot 2}\cdot 2}=s$

$2\cdot 2\sqrt{2}=s$

$4\sqrt{2}=s$

7 0

3 years ago

The owner of an art supply store buys tubes of magenta oil paint for $10.80 and marks up the cost by 10% to determine the retail

Tanzania [10]

Answer:

10.80 - 20 percent equals 8.64

Step-by-step explanation:

4 0

3 years ago