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Reptile [31]
2 years ago
11

HELP i’m struggling pls

Mathematics
2 answers:
Jlenok [28]2 years ago
8 0
Hmmmmmmmm is this math or ?
Liula [17]2 years ago
7 0

Answer:

answer is 80.

Step-by-step explanation:

a line has to equal 180 degrees, so 180-100 is 80

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What is the value of x?
blsea [12.9K]
Since these are supplementary angles  (two angles which sum to 180°) we can say:

4x+x=180  combine like terms on left side

5x=180  divide both sides by 5

x=36°
3 0
3 years ago
On the left, model 4 + (-6). On the right, model 4 - 6.
insens350 [35]

Answer:

On the left because their both positive and the other one is not and also the left one is on the left y axil

5 0
3 years ago
The ratio of boys and girls in a 4:3.If there are 20 boys, find the number of girls.​
Elina [12.6K]

Answer:

There are 15 girls.

Step-by-step explanation:

The ratio is 4:3, meaning there are 7 parts.

4 parts= 20 (Boys)

This means 1 part is 20 divided by 4.

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6 0
3 years ago
Read 2 more answers
Solve: the sum of two numbers is 70. one number is 4 times the other. what are the two numbers?
Thepotemich [5.8K]
Lets say two numbers are x and y

x+y=70-----------------------eq1

x=4y--------------------eq2

4y+y=70
5y=70
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then x=4*14

x=56


8 0
3 years ago
Hello i need help with question 5 asap!!
sergeinik [125]

Answer:

  arc DB length = 14π feet

Step-by-step explanation:

Assuming point A is the center of the circle, arc DC has measure 180°. Arc DB has measure 40° less, so is 140°. Since you want this in terms of π, we need to convert the degree measure to radians. We do that by multiplying by (π/180) radians per degree:

  arc DB = 140° = 140°(π/180°) radians

__

Now that we know the arc measure in radians, we can find the length of the arc. It is given by the formula ...

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where r represents the radius and θ is the measure of the arc in radians.

The arc length is ...

  s = (18 ft)(7π/9) = 14π ft

Arc DB has a length of 14π feet.

4 0
3 years ago
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