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vovikov84 [41]
3 years ago
11

What is the total area, in square centimeters, to be painted blue.

Mathematics
1 answer:
sweet [91]3 years ago
3 0

Answer:

303.2 squared cm

Step-by-step explanation:

first find the area of the square.

A=lw or A=side squared

A=12(8)

A= 96 squared cm

then find the area of the two triangles and double each answer

A=1/2 bh

A=1/2 8(10.9)

A=43.6

43.6 times 2 = 87.2 squares cm

A=1/2 bh

A=1/2 12(10)

A=60

60 times 2 = 120 squares cm

add all answers....96+87.2+120 = 303.2 squared cm

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Evaluate this exponential expression.
Afina-wow [57]
It's -32 since 10-42=-32
8 0
3 years ago
If AE=6x-55 and EC=3x-16, find DB. (Hint: Find x first and then substitute.)
erica [24]

<u>Given</u>:

Given that ABCD is a rectangle.

The diagonals of the rectangle are AC and DB.

The length of AE is (6x -55)

The length of EC is (3x - 16)

We need to determine the length of the diagonal DB.

<u>Value of x:</u>

The value of x can be determined by equating AE and EC

Thus, we have;

AE=EC

Substituting the values, we get;

6x-55=3x-16

3x-55=-16

       3x=39

         x=13

Thus, the value of x is 13.

<u>Length of AC:</u>

Length of AE = 6(13)-55=78-55=23

Length of EC = 3(13)-16=39-16=23

Thus, the length of AC can be determined by adding the lengths of AE and EC.

Thus, we have;

AC=AE+EC

AC=23+23

AC=46

Thus, the length of AC is 46.

<u>Length of DB:</u>

Since, the diagonals AC and DB are perpendicular to each other, then their lengths are congruent.

Hence, we have;

AC=DB

 46=DB

Thus, the length of DB is 46.

6 0
3 years ago
2^x + 2^-x =5/2 pls I need d. ans​
yKpoI14uk [10]

Answer:

x= 1, -1

Step-by-step explanation:

6 0
3 years ago
21. Angela until the same restaurant four times. Each time she ordered a salad and left at $ 5 tip. She spent a total of $ 54. W
Natalka [10]

So if Angela entered the same restaurant 4 times, we have 4 "instances" of her entering the restaurant.

Each instance, she ordered a salad. The price of this salad is unknown, so we'll say the price is "S".

Each instance, she payed a $5 tip.

So we have 4 instances of spending S, and 4 instances of spending 5.

We know this totals 54.

Knowing all of this information, we can write our equation like this:

4(S + 5) = 54

Divide

S + 5 = 13.50

Subtract

S = 8.50

The cost of salad is $8.50

3 0
3 years ago
Read 2 more answers
A local florist has roses $35 per dozen.<br> You only want to buy 1.<br> How much will it cost you?
Effectus [21]

Answer:

$2.92

Step-by-step explanation:

35/12 = 2.91666666667

1 rose = 2.91666666667 = $2.92

4 0
2 years ago
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