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4 years ago

Help me please!! ABC or D

Mathematics

2 answers:

boyakko [2]4 years ago

8 0

 So ans is 160.

Hope this will help u.....

Andre45 [30]4 years ago

6 0

Is D, the complementary angles are those that sum 180 degrees, hope that helped!

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A guy wire runs from the top of a cell tower to a metal stake in the ground. Lincoln places a 10-foot tall pole to support the g

Lisa [10]

Step-by-step explanation:

2 right triangles are formed.

x is the angle btw wire and grnd

tan x = 10/5 = 2

tanx = ht of tower/(5+14)

2 = tower ht/19

tower ht = 38

length of wire =

$\sqrt{ {38}^{2} + {19}^{2} }$

7 0

2 years ago

What is the solution for x in the equation? -4 + 5x − 7 = 10 + 3x − 2x A. B. C. D.

laiz [17]

Answer:

x=21/4

Step-by-step explanation:

1. combine like terms

-4+-7= -11 3x-2x=x

2. subtract x

5x-11=x+10

4x-11=10

3. add 11

4x=21

4. divide 21 by 4 = 21/4

8 0

3 years ago

8 ^ x * 16 ^ x - 1 equals 1

Lana71 [14]

Answer:

${8}^{x} \times {16}^{x } - 1 = 1 \\ {2}^{3x} \times {2}^{4x} = 1 + 1 \\ {2}^{7x} = {2}^{1} \\ 7x = 1 \\ x = \frac{1}{7}$

7 0

3 years ago

Let ? = {a, b, c} be a sample space. let m(a) = 1/2, m(b) = 1/3, and m(c) = 1/6. find the probabilities for all eight subsets of

Leviafan [203]

A= {a,b,c} . Since this set has 3 elements, the number
of its total subset is 2³ = 8 (including the Ф element):

Here below all the subsets of {a,b,c}, with their related probabilities, knowing that P(a) = 1/2 ; P(b) = 1/3 and P(c) = 1/6

{a} →→→→1/2
{b} →→→→1/3
{c} →→→→1/6
{a,b} →→→→1/2 + 1/3 = 5/6
{a,c} →→→→1/2 + 1/6 = 2/3
{b,c} →→→→1/3 + 1/6 = 1/2
{a,b,c} →→→→1/2 + 1/3 + 1/6 = 1
{∅} →→→→0 =0

5 0

3 years ago

Kendra is buying gifts for 5 friends.

Blizzard [7]

Answer:

She could spend $18 on each for the 4 friends

Step-by-step explanation:

100-28= 72

72/4=18

4 0

3 years ago