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12345 [234]
3 years ago
9

Please show work!

Mathematics
2 answers:
Anastaziya [24]3 years ago
7 0
28/8=3.5
3.5*20=70
70.
ddd [48]3 years ago
3 0
8:28 divide by 2
4:14 multiply times 5
20:70 is the answer
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A triangle has angle measures 23degrees and 35 degrees. what is the measure of the third triangle
Tju [1.3M]
The answer is 122 for the final angle
7 0
2 years ago
what is the surface area of a rectangular prism that has a height of 5cm a width of 10cm and a depth of 4cm
Kamila [148]

2(5*10)+2(10*4)+2(5*4)=

2(50)+2(40)+2(20)=100+80+40=

220 cm^2

I found the answer by finding the areas of the 3 different sides, multiplying each area by 2 since each side has another side that is equal on a rectangular prism, then adding all of them together.

4 0
3 years ago
K is the midpoint of JL JK=3x-1 and KL=2x+8 find JL
Masteriza [31]

Answer:

JL = 52

Step-by-step explanation:

It is given in the question that K is the midpoint of JL.

So, JK = KL ......... (1)

Now, given that, JK =3x - 1 and KL = 2x + 8  

Therefore, from equation (1), we can write  

3x - 1 = 2x + 8

⇒ x = 9

So, JK = 3x - 1 = 3(9) -1 = 26 and KL = 2x + 8 = 2(9) + 8 = 26

Hence, JL = JK + KL = 26 + 26 = 52. (Answer)

3 0
2 years ago
Simplify the expression and combine like terms. 3(x-2)-2(x+1)3(x−2)−2(x+1)
Nady [450]

Answer:

6x^2+7x+4

Step-by-step explanation:

Explanation is in photo

6 0
1 year ago
The legs of a right triangle are 12 cm and 16 cm. What is the length of the hypotenuse? 15 cm 17 cm 20 cm 28 cm
GalinKa [24]
Answer: 20 cm

To solve this, use the Pythagorean Theorem, a² + b² = c², where a and b are the legs of the right triangle, and c is the hypotenuse of the right triangle.
**The Pythagorean Theorem only works for right triangles.**

Substitute in the values.
a² +  b² = c²
12² + 16² = c²

Solve for c, the hypotenuse.
12² + 16² = c²               
144 + 256 = c²
400 = c²
c = √400
c = 20

7 0
3 years ago
Read 2 more answers
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