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barxatty [35]
4 years ago
10

What is the total surface area of the square pyramid below? A square pyramid. The square base has side lengths of 10 centimeters

. The triangular sides have a height of 14 centimeters. 100 cm2 200 cm2 280 cm2 380 cm2
Mathematics
2 answers:
Troyanec [42]4 years ago
4 0

Answer:

00 c

Step-by-step explanation:

Sunny_sXe [5.5K]4 years ago
3 0

Answer:

380 cm^2

Step-by-step explanation:

10*10=100(base square)

Each triangle= (14*10) /2=70

4 sides, so therefore: 70*4=280

280+100=380

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A landscaper has enough cement to make a patio with an area of 150 Sq ft. The homeowner wants the length of the patio to be 6 ft
Natasha_Volkova [10]
A=lw=150\\l=w+6\\(w+6)w=150\\w^2+6w=150\\w^2+6w-150=0\\w=\frac{-b+-\sqrt{b^2-4ac}}{2a}\\w=\frac{-(6)+-\sqrt{(6)^2-4(1)(-150)}}{2(1)}\\w=\frac{-6+-\sqrt{36+600}}{2}\\w=\frac{-6+-\sqrt{636}}{2}\\w=\frac{-6+-2\sqrt{159}}{2}\\w=-3+-\sqrt{159}>0\\w=-3+\sqrt{159}\\\\l=(-3+\sqrt{159})+6\\l=3+\sqrt{159}

Width = -3 + sqrt(159)
Length = 3 + sqrt(159)
4 0
3 years ago
Sarah averages 30 miles per hour driving from Tallahassee to Gainesville. What must her average speed be on the return trip if t
stiv31 [10]

Answer:

Explained

Step-by-step explanation:

average speed from Tallahassee to Gainesville is 30miles/hour

and the total average speed of the whole trip is 40 miles/hour

let the average speed in return journey be x miles per hour.

we know that if the distance is constant the average speed of the whole trip is given as

S_{avg}= \frac{2S_1S_2}{S_1+S_2}

40=\frac{2\times30\times x}{30+x}

on calculating we get x= 60 miles/hour

now, since the distance between two places is always constant, the result does not matter on the distance between two places. The average speed will remain the same.

4 0
3 years ago
4. All of the following payroll taxes are expenses incurred by an employer except:
GenaCL600 [577]
C bicameral I don’t
7 0
3 years ago
A bag of skittles has 50 pieces of candy what percentage is orange ps. there are 11 orange skittles
Oliga [24]

Answer:

I think the answer is 22% but I am not sure

Step-by-step explanation:

Percentage solution with steps:

Step 1: We make the assumption that 50 is 100% since it is our output value.

Step 2: We next represent the value we seek with X

Step 3: From step 1, it follows that 100%=50

Step 4: In the same vein, x%=11.

Step 5: This gives us a pair of simple equations:

100%=50(1).

X%=11(2).

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the left hand side of both equations have the same unit; we have

100% / X% = 11 / 50

X = 22%

Step 7: Taking the inverse (or reciprocal) of both sides yields

X% / 100% = 11 / 50

Therefore, 11 is 22% of 50.

5 0
3 years ago
Read 2 more answers
Tell whether the angles are complementary or supplementary. then find the value of x
chubhunter [2.5K]

Hello,

In Q5. Being a straight line the angles are supplementary to each other.

And x = 70°

In Q6.

The angles sum up to 90° , so 25x + 30° = 90

25x = 60°

x= 60°/25 = 2.4°

Hope this helps.

7 0
3 years ago
Read 2 more answers
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