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3 years ago

A rectangle is 2 √7 feet wide and 3 √7 feet long. What is the area, in square feet, of

Mathematics

1 answer:

Flura [38]3 years ago

3 0

Answer:

$42ft^{2}$

Step-by-step explanation:

$2\sqrt{7}$ × $3\sqrt{7}$

Multiply the numbers outside the root and inside the root.

$2x3=6$ $7x7=49$

$6\sqrt{49}$

Simplify whats under the root

$\sqrt{49} = 7$

$6$ × $7=42$

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kicyunya [14]

Answer:

The answer is C) 54 pounds

Step-by-step explanation:

because im batman

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4 years ago

Given: m∠LON=77 ° m∠LOM=9x+44 ° m∠MON=6x+3 ° Find ∠MON

NISA [10]

Answer:

$m\angle MON=15^o$

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

$m\angle LON=m\angle LOM+m\angle MON$ ---> by addition angle postulate

substitute the given values

$77^o=(9x+44)^o+(6x+3)^o$

solve for x

$77=(15x+47)$

$15x=77-47$

$15x=30\\x=2$

Find the measure of angle MON

$m\angle MON=(6x+3)^o$

substitute the value of x

$m\angle MON=(6(2)+3)=15^o$

8 0

3 years ago

I NEED HELP PLEASE I WILL MARK BRAINLIST The question is in the screenshot

Ivan

The answer is unreasonable because the value of x is between 2 and 3.The error is : she did not introducing logs in solving the equation.

Step-by-step explanation:

The question is $7^x=95$

Here answers is unreasonable because, she can test with powers of seven like;

7²=49

7³=343

So this means the value of x lies between 2 and 3, so here answer 11.71 is unreasonable

b) In this case, to solve the equation, introduce logs both sides

$7^x=95$

$log7^x=log95\\\\\\xlog7=log95\\\\\\x=\frac{log95}{log7} \\\\\\x=2.340$

Learn More

Indices :brainly.com/question/1660321

Keywords :Equation, error

#LearnwithBrainly

4 0

3 years ago

12 less than the quotient of a number and seven is -2 find the number

kiruha [24]

A quotient is the result of a division.
Let the unknown number be x.

We translate the problem into an equation, piece by piece.

"quotient of a number and seven" ----> x/7

"12 less than the quotient of a number and seven" ----> x/7 - 12

The word "is" means "="
x/7 - 12 =

All the above is -2, so it equals -2.

x/7 - 12 = -2

$\dfrac{x}{7} - 12 = -2$

First, add 12 to both sides and simplify.

 $\dfrac{x}{7} - 12 + 12 = -2 + 12$


 $\dfrac{x}{7} = 10$ 

Next, multiply both sides by 7.

$\dfrac{x}{7} \times 7 = 10 \times 7$

$x = 70$

Answer: The number is 70.

5 0

3 years ago

Read 2 more answers

When the coffee is brewed according to directions, a pound of coffee beans yields 50 cups of coffee (4 cups = 1 qt). How many kg

Basile [38]

we know that

$1\ pound=0.453592\ kg$