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soldier1979 [14.2K]
3 years ago
12

What is the Surface Area of this square pyramid? Just asking for a quick check.

Mathematics
2 answers:
Svetach [21]3 years ago
5 0

Answer:

B 175

Step-by-step explanation:

7 times 7 is 49

9 times 7 divided by 2 is 31.5

31.5 times 4 is 126

126 + 49 is

navik [9.2K]3 years ago
3 0

Answer:D.) 301

Step-by-step explanation:

I’m not 100% sure but if you multiply all the sides 9 times 7 three times then add that to 7 times 7 you get 301

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When a pentagonal spinner is spun, it lands on one of 1, 2, 3, 4, or 5. If this spinner is spun
krek1111 [17]

Answer:

1/5

Step-by-step explanation:

4 0
3 years ago
How many solutions are there to the system of equations?
hichkok12 [17]

Answer: The system of equations has NO SOLUTION.

Step-by-step explanation:

The equation of the line in Slope-Intercept form is:

y=mx+b

Where "m" is the slope and "b" is the y-intercept.

Given the following system of equations:

\left \{ {{4x-5y=5} \atop {-0.08x+0.10y=0.10}} \right.

Write the first equation and solve for "y" in order to express it in Slope-Intercept form:

4x-5y=5\\\\-5y=-4x+5\\\\y=\frac{-4x}{-5}+\frac{5}{-5}\\\\y=0.8x-1

You can identify that:

m=0.8\\b=-1

Apply the same procedure with the second equation. Then:

-0.08x+0.10y=0.10\\\\0.10y=0.08x+0.10\\\\y=\frac{0.08x}{0.10} +\frac{0.10}{0.10}\\\\y=0.8x+1

You can identify that:

m=0.8\\b=1

The slopes of both lines are equal, therefore  the lines are parallel and the system has NO SOLUTION.

7 0
4 years ago
Read 2 more answers
(4 points) A tank initially contains 50 gallons of brine, with 30 pounds of salt in solution. Water runs into the tank at 6 gall
NISA [10]

you look like a dung beetle rolling up a hunk a sh^t

8 0
3 years ago
The following table shows the probability of rolling the numbers 1 through 7
Marysya12 [62]

Answer:

2.0

Step-by-step explanation:

Couldn't really understnd what you wrote but I'll assume it's the standard deviation of a fair, 7-sided die

The standard deviation is just the square root of the variance (which is just the second moment minus the first moment squared)

The first moment (AKA the average is..)

\frac{1+2+3+4+5+6+7}{7}=4

The second moment is..

\frac{1^2+2^2+3^2+4^2+5^2+6^2+7^2}{7}=20

\sqrt{20-4^2}=2

4 0
3 years ago
15<br> Find the missing angle.<br> 200<br> 180<br> А A<br> 100<br> B) 50<br> C 80<br> D) 70°
Korvikt [17]

Step-by-step explanation:

=> x + 80 + 20 = 180

=> x + 100 = 180

=> x = 180 - 100

=> x = 80°

6 0
3 years ago
Read 2 more answers
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