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Zarrin [17]
3 years ago
7

Please help with 8th grade math (will give brainliest)

Mathematics
1 answer:
BigorU [14]3 years ago
4 0
He is waiting in letter P
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How can I graph that
REY [17]
Slope:2
y intercept: 5
so if your test has like a graph the dot will be at y=5
5 0
3 years ago
Help please and thanks!
IRISSAK [1]
Alright. It seems like the triangle that has the 45 degree angle with angles c & d is an isosceles triangle which meas two sides are equal.
If that is true, angle d would be 45. Add 45 and 45 together to get 90, which is angle c. The angle right across from c, a, will be 90 as well. Add 90 and 45 to get 135 and then do 180 - 135 to get angle b. Angle b should equal 45 as well. So adding each of the angles together, 90 + 45 + 90 + 45 = 360 

Your final answer is 360. 
8 0
3 years ago
Find a side of an equilateral triangle with a 12 inch altitude
saveliy_v [14]
Since the triangle is an equilateral triangle we know all of it's sides must be the same length, with that in mind the angles that make up the triangle must be equal as well. Knowing that a triangle's three interior angles make up 180 degrees we know that the size of each angle must be one third of this (as each angle must be equal).

180/3 = 60


then we may split the triangle along it's altitude into two special right triangles
more specifically two 30-60-90 triangles.

this means that the side with 30 degrees will be some value "x" where the side for 60 degrees will be related as it is "x*sqrt(3)" and the hypotenuse (which would be the side of the triangle) would be proportionally "2x"

this would mean that the altitude is the side associated with the 60 degree angle as such we can solve for "x" using this.

12= x*sqrt(3)
12/sqrt(3)=x
4sqrt(3)=x  (simplifying the radical we get "x" equals 4 square root 3)

now we may solve for the side length of the triangle which is "2x"

2*4sqrt(3) ->   8sqrt (3)  

eight square root of three is the answer.
8 0
3 years ago
What is (2x2+6x+5) - (6x2+ 3x+5) solved ?<br>​
lana [24]

Answer:

The answer is (-8+3x). :)

3 0
2 years ago
Evaluate the expression <br> 5.4+ab, if a = 4 and b = 8
dsp73

Answer:

37.4

Step-by-step explanation:

a = 4 and b = 8

change the equation

5.4 + (4) (8)

use P.E.M.D.A.S. and multiply

4*8 = 32

add

5.4 + 32 = 37.4

7 0
3 years ago
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