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love history [14]
3 years ago
12

Find the surface area of the pyramid

Mathematics
1 answer:
cricket20 [7]3 years ago
7 0

Answer:

32√3

Step-by-step explanation:

I hope this helps... if not i dont know then

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A line has a slope of -1/4 and passes through point (-5/4,1) what is the equation of the line?
solniwko [45]

Answer:

The correct answer is B. y = -1/4x + 11/16

Step-by-step explanation:

In order to find this, we must plug in the slope and the point into point-slope form. We can then solve for slope intercept form.

y - y1 = m(x - x1)

y - 1 = -1/4(x - -5/4)

y - 1 = -1/4(x + 5/4)

y - 1 = -1/4x - 5/16

y = -1/4x + 11/16

7 0
3 years ago
I’m so confused, I will try to mark brainliest, sorry if I can’t figure it out.
Genrish500 [490]

Answer:

x^{\circ}+105^{\circ}=180^{\circ},\\x^{\circ}=z^{\circ},\\180^{\circ}-z^{\circ}=y^{\circ}

Step-by-step explanation:

<u>Statement 1</u>:

True - These two angles are supplementary (add up to 180 degrees) because they form one side of a line.

<u>Statement 2</u>:

True - These two angles are vertical angles (opposite to each other at intersection of two lines). All vertical angles are equal.

<u>Statement 3</u>:

False - These two angles are vertical and therefore are equal. Thus, they cannot have a difference of 105.

<u>Statement 4</u>:

False - Two of these angles form one side of a line which is equal to 180 degrees. Since the third angle is greater than zero, they cannot all add up to 180 degrees.

<u>Statement 5</u>:

True - These two angles are supplementary (add up to 180 degrees) because they form one side of a line.

<u>Statement 6</u>:

False - These two angles are supplementary (add up to 180 degrees) because they form one side of a line and therefore cannot be equal to 105.

5 0
3 years ago
Read 2 more answers
Twice the first number is eleven more than the sum of the other two numbers. The sum of twice the first number and three times t
lidiya [134]
Well first you have to make variables for each number.
1st - x
2nd - y
3rd - z

first sentence says twice first number so 2x. is means equals so =. eleven more than sum of the other two numbers. sum of other two numbers is (y + z) and eleven more than that is (y + z) + 11. So so this sentence says:
2x = (y + z) + 11

second sentence says sum of twice the first and three times third. twice first is 2x and three times third is 3z. their sum would be (2x + 3z). It it says is one more than second number. So = (y + 1). So so this means:
(2x + 3z) = (y + 1)

third sentence says second number (y) is is equal to sum of first and third (x + z). so;
y = (x + z)

now for the work.

We we can easily solve for a by subtracting the first 2 equations. the way to subtract 2 equations is by subtracting one left side of equal sign from the other equations left side and then doing the same with the right side.

So we will subtract the 1st and second equations we made.
So so left sides would be
2x - (2x + 3z)
2x - 2x - 3z
-3z

right side would be:
y + z + 11 - (y + 1)
y + z + 11 - y - 1
z + 10

now put the sides with an equal sign
-3z = z + 10
-4z = 10
z = -2.5

now we can plug in z into the equations and subtract second and third equations. But but we will subtract opposite sides. So so left minus right and right mi is left after we plug in z:
(2x + 3 (-2.5)) - (x + (-2.5))
2x - 7.5 - x + 2.5
x - 5

other one would be
(y + 1) - y
1

So so put an equal sign and get:
x - 5 = 1
x = 6

now plug x and x into 3rd equation
y = x + z
y = 6 + (-2.5)
y = 3.5

now we have values. You can check answer by plugging values into other 2 equations
6 0
3 years ago
Given the figure below find the values of x and z <br> (12x +2)°<br> 94°<br> z°
MAXImum [283]

Answer:

z = 94

x = 7

Step-by-step explanation:

The angle with a measure of 94° and the angle labeled "z" are vertical angles

Vertical angles are congruent ( equal to each other )

Which means that because "z"s vertical angle = 94° z also equals 94°

The angle labeled with the expression ( 12x + 2 ) and the angle with a measure of 94° are supplementary angles

Supplementary angles add up to equal 180

Hence, 94 + 12x + 2 = 180

                        ^ (Note that this is the equation we will use to solve for x )

Now we solve for x

94 + 12x + 2 = 180  

step 1 combine like terms

94 + 2 = 96

we now have 180 = 96 + 12x

step 2 subtract 96 from each side

180 - 96 = 84

96 - 96 cancels out

we now have 84 = 12x

step 3 divide each side by 12

84 / 12 = 7

12x / 12 = x

we're left with x = 12

6 0
3 years ago
Read 2 more answers
Drag the tiles to the boxes to form correct pairs.<br> Match the pairs of equivalent expressions.
Masja [62]

Answer:

Step-by-step explanation:

look this solution

5 0
3 years ago
Read 2 more answers
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