All categories

2 years ago

Help I’m really confused and I don’t understand it

Mathematics

2 answers:

xeze [42]2 years ago

6 0

Answer:

answer shown below

Step-by-step explanation:

m of angle 1= 47⁰

m of angle 2= 137⁰

m if angle 3= 31⁰

find measure 1 by adding 90⁰+42⁰=133⁰ and subtract 180 from it to find 1

find measure 2 by subtracting 43 from 180

find measure 3 by adding measure 2 (137⁰) and 12⁰ together to get 138⁰ and subtract 180 to get 31⁰

hope this helps

Nimfa-mama [501]2 years ago

5 0

Answer:

m∠1 = 47°

m∠2 = 137°

m∠3 = 31°

Brainliest pls :D

You might be interested in

O MODULE 1: EXPRESSIONS AND EQUATIONS

Whitepunk [10]

Answer:

First, multiply the 5 by each of the terms inside the parentheses. Next, simplify each part of the expression and then add. The answer is 5(2+3)=25. The distributive property also works if there is subtraction inside the parentheses

Step-by-step explanation:

7 0

3 years ago

I’m not sure about this one folks plz help:D

solong [7]

35 is the answer

Explanation, the sum of interrior angme is 180degree

x+(3x+40)= 180

or, 4x= 180-40

or, x= 140÷ 4

or x = 35

8 0

3 years ago

Read 2 more answers

Does the greater than or less than

Ganezh [65]

No the signs stay the same

5 0

2 years ago

An isotope of iodine has a mass of 134 amu. How many neutrons does the

Nina [5.8K]

Answer:

The correct option is C: the isotope of iodine contains 81 neutrons.

Step-by-step explanation:

The mass (A) of the iodine isotope is given by:

$A = Z + N$

Where:

Z: is the number of protons

N: is the number of neutrons

For iodine Z= 53, so if A = 134 the number of neutrons is:

$N = A - Z = 134 - 53 = 81$

Therefore, the correct option is C. The isotope of iodine contains 81 neutrons.

I hope it helps you!

5 0

2 years ago

Suppose sin(A) = 1/4. use the trig identity sin^2(A)+cos^2(A)=1 to find cos(A) in quadrant II. around to ten-thousandth.

larisa86 [58]

In quadrant II, $\cos(A)$ will be negative. So

$\sin^2(A) + \cos^2(A) = 1 \implies \cos(A) = -\sqrt{1 - \sin^2(A)} = -\dfrac{\sqrt{15}}4 \approx \boxed{-0.9682}$

8 0

1 year ago