X y

Help me pleasee asap !!

Alik [6]

Answer:

F = 110°

I'm not sure, but since no one answered, here it goes...

Step-by-step explanation:

∵ FD = FE (Given in Diagram)

∴ ΔDFE is isosceles , ∴m∠E = m∠D

1 ) 3x + 14 = 5x

14 = 5x - 3x

14 = 2x

14 / 2 = x

7 = x

m∠E = 3*7 + 14 = 35°

m∠D = 5*7 = 35°

m∠F = 180 - (35+35)

m∠F = 110°

3 0

2 years ago

What is 22.5% written as a fraction in simplest form?

murzikaleks [220]

Answer:

9/40

Step-by-step explanation:

Write down the percent divided by 100 like this:

22.5/100

Multiply both top and bottom by 10 for every number after the decimal point:

As we have 1 digit after the decimal point, we multiply both numerator and denominator by 10, or, simply shift 1 decimal place to the right. So,

(22.5*10)(100*10)= 225/1000

Simplify (or reduce) the above fraction by dividing both numerator and denominator by the GCD (Greatest Common Divisor) between them. In this case, GCD(225,1000) = 25.

225 ÷ 25/ 1000÷25 = 9/40

5 0

2 years ago

Erica likes to ride her horse on a 1/2 mile trail. On Monday, Erica rode her

Mumz [18]

Answer:

21/8 or 2 5/8

Step-by-step explanation:

7/2 miles is equal to 3 1/2 mile trail, or also a 3 2/4 mile trail. You then multiply 3 2/4 and 3/4 and get 2 5/8 or 21/8.

6 0

1 year ago

For what values of a the following expressions are true: |a|=−a

Ymorist [56]

Answer:

Any negative number and 0 works for the expression.

Step-by-step explanation:

Looking at this type of equation, we know that either EVERY negative number and 0 or EVERY positive number and 0 will work for this equation, since nothing is being added and we're just working with absolutes/negatives.

Let's try a random positive number in the expression

$|6| = -(6)\\6 \neq -6$

So this positive number doesn't work, let's just test with another one.

$|9| = -(9)\\9 \neq -9$

So we know that positive numbers won't work with this expression.

Let's test 0 quickly, just to make sure.

$|0| = -0\\0 = 0$

So 0 works.

Let's try a few negative numbers now.

$|-5| = -(-5)\\5 = 5$

So yes, this does work. Let's try one more negative number.

$|-120| = -(-120)\\120 = 120$

This works. So, every negative number and 0 work with this equation.

Hope this helped!

6 0

3 years ago

Read 2 more answers

WILL GIVE BRAINLIEST AND 25 POINTS! Which of the following statements are true? Check all that apply. A. If any row of a square

sertanlavr [38]

Answer:

Option A, B and E

Step-by-step explanation:

Determinant = ad-bc

Let's look at the picture and solve all

Option A)

If the row ( c and d ) is zero, the determinant will be zero

=> a(0)-b(0)

=> 0-0

=> 0 (So, True)

Option B)

If a = b = c = d (Let's say 1), the determinant will be

=> (1)(1)-(1)(1)

=> 1-1

=> 0 (So, True)

Option C)

An Identity matrix is

=> $\left[\begin{array}{ccc}1&0\\0&1\end{array}\right]$

So , it's determinant will be

=> (1)(1)-(0)(0)

=> 1-0

=> 1 (So, False)

Option D)

The determinant with matrix will all positive numbers can be negative as well as positive. This is not necessary that it would be positive. (So, False)

Option E)

A zero matrix is

=> $\left[\begin{array}{ccc}0&0\\0&0\end{array}\right]$

So, it's determinant is:

=> (0)(0)-(0)(0)

=> 0-0

=> 0 (So,True)

5 0

2 years ago