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Vaselesa [24]
3 years ago
5

In the diagram, find the values of a and b.​

Mathematics
1 answer:
uysha [10]3 years ago
8 0

Answer:

<h2>            m∠a = 67° ,   m∠b = 42°</h2>

Step-by-step explanation:

∠a is alternate interior angle to ∠ECD

∠b is alternate interior angle to ∠BCD

so:

If AB || CD then:

m∠a = m∠ECD = 25° + 42° = 67°

m∠b = 42°

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Scientific notation
tatuchka [14]

Answer:

1.45

Step-by-step explanation:

not sure but trying to help :)

4 0
3 years ago
Please help i have exam tom. ​
Xelga [282]

Answer:

Step-by-step explanation:

this is a simultaneous equation question

f(1)=8  so  a(1) + b = 8

f(4)=17 so a(4) + b = 17

can you figure this out from here ???

if you can't below is how to solve it

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a + b = 8

4a+b=17

multiply the top equation by 4 and then subtract the bottom one from the top

4a+4b = 32

-(4a +b = 17)

3b = 15

b=5

now plug 5 into the first equation

a + 5 = 8

a=3

there you go :)

3 0
3 years ago
Given triangle PRS is congruent to triangle CFH, find the values of x, y, and z.
Mashutka [201]

Answer:

x = 23

y = 7

z = 11

Step-by-step explanation:

Since ∆PRS ≅ ∆CFH, therefore,

m<R = m<F

13y - 1 = 90° (substitution)

Add 1 to both sides

13y - 1 + 1 = 90 + 1

13y = 91

Divide both sides by 13

13y/13 = 91/13

y = 7

Since ∆PRS ≅ ∆CFH, therefore,

PS = CH

2x - 7 = 39 (substitution)

Add 7 to both sides

2x - 7 + 7 = 39 + 7

2x = 46

Divide both sides by 2

2x/2 = 46/2

x = 23

Since ∆PRS ≅ ∆CFH, therefore,

m<S = m<H

Find m<S

m<S = 180 - (m<P + m<R) (sum of ∆)

m<S = 180 - (28 + (13y - 1)) (substitution)

Plug in the value of y

m<S = 180 - (28 + (13)(7) - 1))

m<S = 180 - (28 + 91 - 1)

m<S = 180 - 118

m<S = 62°

Therefore, since m<S = m<H,

62° = 6z - 4 (substitution)

Add 4 to both sides

62 + 4 = 6z - 4 + 4

66 = 6z

Divide both sides by 6

66/6 = 6z/6

11 = z

7 0
3 years ago
3. Points A, B, C, D, E, and F are integers. Use the clues to put the points in order
Dmitry_Shevchenko [17]
BCDEFA is the correct answer
4 0
3 years ago
The coach needs to choose the top bowler for the next meet. If the coach bases her decision on the player with the best average,
vredina [299]

Answer: Emma’s mean is 189.   Devins mean is 186.

Step-by-step explanation:

Emma: 147+143+181+232+193+207+205+221+172= 1701. 1701 divided by nine: 189.

Devin: 185+186+194+197+198+155+194+163+202= 1674 divided by nine: 186.

Coach should choose Emma.

Hope i helped have an awesome Friday!

8 0
3 years ago
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