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3 years ago

Find all of the missing angle measurements (pls help i can’t seem to figure out this part)

Mathematics

1 answer:

Bond [772]3 years ago

8 0

Angles of a triangle added together equal 180

A=180-143=37

B is 145 b/c like angles

C=A b/c lines are similar

D=143-85=58

E=C b/c like angles

F=90-E=53

G=48

H=180-48-G=180-48-48=84

K=180-H=96

M=180-K-D=180-96-58=26

P=180-85-M=69

R=180-P=180-69=111

S=P

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If 3a + 2b = 7 and 2a + 2b = 9 , what is the value of

Simora [160]

Hey there :)

We have two equations:
3a + 2b = 7
2a + 2b = 9

We need to solve simultaneously to find the values of a and b

eq.1 3a + 2b = 7
eq.2 ( 2a + 2b = 9 ) x -1 ) multiply by -1 to cancel 2b

3a + 2b = 7
- 2a - 2b = -9 ( Add both together )
-------------------
a = - 2

Substitute the value you found for a in a in order to find b

3( - 2 ) + 2b = 7 2( - 2 ) + 2b = 9
- 6 + 2b = 7 OR - 4 + 2b = 9
2b = 13 2b = 13
b = $\frac{13}{2}$ b = $\frac{13}{2}$

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3 years ago

How do you express three less than a number

Lynna [10]

Answer:

x - 3

Step-by-step explanation:

let's call the unknown number x to express its value that's three less than actual number we say x - 3

5 0

3 years ago

tatuchka [14]

Convert 20% into a decimal like this >> 20/100 =0.2 now 0.2 x 60.00 =12 the answer hope it works.

7 0

3 years ago

Find x please I will give brainlest.

Lesechka [4]

Answer:

x=28

Step-by-step explanation:

6(x+2)=180 Step 1: Write equation

6x+12=180 step 2: Expand the equation

6x=168 Step 3: Do 180-12 first

x=28 Step 4: Divide by 6 answer you got in Step 3

Step 5: replace 28 with x to see if it's correct 6(28+2)= 180

Put comment if answer is wrong and i will change my answer soon as possible

I hope this helps

4 0

3 years ago

Read 2 more answers

Consider the following scenario: Let P(C) = 0.4. Let P(D) = 0.5. Let P(C|D) = 0.6. a. Find P(C AND D). b. Are C and D mutually e

Nataly_w [17]

a. By definition of conditional probability,

P(C | D) = P(C and D) / P(D) ==> P(C and D) = 0.3

b. C and D are mutually exclusive if P(C and D) = 0, but this is clearly not the case, so no.

c. C and D are independent if P(C and D) = P(C) P(D). But P(C) P(D) = 0.2 ≠ 0.3, so no.

d. Using the inclusion/exclusion principle, we have

P(C or D) = P(C) + P(D) - P(C and D) ==> P(C or D) = 0.6

e. Using the definition of conditional probability again, we have

P(D | C) = P(C and D) / P(C) ==> P(D | C) = 0.75

3 0

3 years ago