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3 years ago

Are the corresponding angles 7 and 6 /5 and 8 or 7 and 3 8and 4 please explain I'm SO confused

Mathematics

2 answers:

AnnyKZ [126]3 years ago

4 0

Answer: 7=6=3=2 and 8=5=4=1

Step-by-step explanation:

For 2 straight lines crossing, opposite angles are equal. And because the 2 vertical lines are parallel, both sets (1234 and 5678) of angles are the same. Let me know if that is too confusing

frutty [35]3 years ago

3 0

Answer:

f shape, I don't know if I'm correct

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True or False if you took a true if then statement and inserted a not in each clause the new statement would also be true

nadya68 [22]

Answer:

False

Step-by-step explanation:

Here's a true if-then statement:

if false, then true

Here's the modification proposed:

if not false, then not true . . . . . . . . . this is not a true if-then statement

8 0

4 years ago

10) Spike drives for 50 miles at 60mph. He slows down and travels

Anettt [7]

Answer:

2 1/3 hours or 2 hours 20 minutes.

51.4 mph to 1 decimal place.

Step-by-step explanation:

Time = distance speed

First 50 miles time taken = 50 / 60 = 5/6 hours

Second 50 miles - time = 50/40 = 5/4 hours.

Final 20 miles - time taken = 20 / 80 = 1/4 hours.

Total time taken = 5/6 + 5/4 + 1/4

= 5/6 + 6/4

= 10/12 + 18/12

= 28/12

= 7/3 or 2 1/3 hours or 2 hours 20 minutes.

Average speed = total distance / total time

= 120 / 7/3

= 120 * 3/7

= 51.4 mph to 1 decimal place.

6 0

3 years ago

(This is a "show your work" type of assignment)

joja [24]

Answer:

Part 1) It is not possible to apply the Pythagorean Theorem to find the missing side, because is not a right triangle

Part 2) I would use the law of the cosine, because to apply the law of sine I would need to know the value of angle C or angle B

Part 3) The length of side CB is $369\ units$

Part 4) The measure of angle C is $35\°$

Part 5) The measure of angle B is $88\°$

Step-by-step explanation:

Part 1) Can you use Pythagorean Theorem to find the missing side?

we know that

The Pythagorean Theorem is used in a right triangle

The triangle ABC of the figure is not a right triangle

therefore

It is not possible to apply the Pythagorean Theorem to find the missing side

Part 2) Would you use Law of Sine or Law of Cosine to find the length of side CB?

I would use the law of the cosine, because to apply the law of sine I would need to know the value of angle C or angle B

Part 3) Find the length of side CB. Show your work and round your answer to the nearest whole number

Applying the law of cosine

$BC^{2}=AB^{2}+AC^{2}-2(AB)(AC)cos(A)$

substitute the values

$BC^{2}=255^{2}+440^{2}-2(255)(440)cos(57\°)$

$BC^{2}=136,408$

$BC=369\ units$

Part 4) Find the measure of angle C. (Hint: use the other “Law”). Round your answer to the nearest whole degree

Applying the law of sines

$\frac{AB}{sin(C)}=\frac{CB}{sin(A)}$

substitute the values

$\frac{255}{sin(C)}=\frac{369}{sin(57\°)}$

$sin(C)=255*sin(57\°)/369=0.5796$

$C=arcsin(0.5796)=35\°$

Part 5) What is the measure of angle B? Show your work and round your answer to the nearest whole degree.

Remember that

the sum of the interior angles of a triangle must be equal to 180 degrees

substitute the values and solve for <B

$57\°+$

4 0

3 years ago

What’s an equation to show that a and b are related

alekssr [168]

Alternate interior angles.

Explanation

When two angles lie on same line but on different sides, then it's Alternate interior angles.

Hope it helped you.. Pls mark brainliest

4 0

3 years ago

Please help!!!! thanks

Alex

Step-by-step explanation:

make another column with the heading difference. now, the difference between the children's ages will always be the same. so now you have to make the ratio the same.

NOW:

Child A:Child B:difference

3: 2 : 1(3units-2 units)

10 years later

Child A:Child B:difference

7: 6. : 1(7 units-6 units)

since the difference us the same for both ratios, now we can compare between both sets of ratios.

take for example child A:

the number of units increased in 10 years is 7 units-3 units=4 units

4 units is 10 years

1 unit is

$10 \div 4 = 2.5$

and therefore one child is 5 years old and the other is 7 and a half.

NOTE: IT IS THE SAME IF YOU USED CHILD B.

take for example child B:

the number of units increased in 10 years is 6 units-2 units=4 units

and if you continue to solve, you will find that you arrive at the same answers.

hope this helps!!!!

7 0

4 years ago