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Nastasia [14]
2 years ago
5

What is the answer choice? A 288 B 108 C 18 D 72

Mathematics
2 answers:
hoa [83]2 years ago
8 0

Answer:

B

Step-by-step explanation:

Sum of all the angles of a triangle = 180

x + 38 + 34 = 180

x + 72 = 180

Subtract 72 from both sides

x = 180 - 72

x = 108

FinnZ [79.3K]2 years ago
3 0

Answer:

B. 108

Step-by-step explanation:

34° + 38° + 108° = 180°

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Officials begin to release water from a full man-made lake at a rate that would empty the lake in 14 weeks, but a river that can
Margarita [4]

Answer:\frac{140}{3} weeks

Step-by-step explanation:

Given

It takes 14 weeks to empty a lake

also it takes 20 weeks for a river to fill the lake

Part of lake empty in 1 week =\frac{1}{14}

Part of lake filled in 1 week is =\frac{1}{20}

And if both works simultaneously then

\frac{1}{14}-\frac{1}{20}=\frac{10-7}{140}

=\frac{3}{140}

therefore it takes \frac{140}{3} weeks to fill it

4 0
3 years ago
!!!I WILL MARK BRAINLIEST! PLZ ANSWER ASAP AND EXPLAIN! VERY IMPORTANT!!
Nata [24]

Answer: Check explanation

Step-by-step explanation: (3,-5), because that's the point where the two lines intersect.

Y=-2x+1

Y=-3/2x-1/2

Substitute the Y to get -2x+1=-3/2x-1/2

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x = 3

Now plug x into first equation: y=-2*3+1=-5

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3 0
2 years ago
Describe hoy to use a tens fact to find the difference for 15-8
wolverine [178]

Right? So if you had a ten block that would represent that for a 10 so 15 minus 10 know 5 left so we would use 5 1 blocks

6 0
3 years ago
1 2/5m - 3/5 ( 2/5m + 1 )
Hunter-Best [27]

Answer:

1 4/25 - 3/5, or 29/25 - 3/5, or \frac{(29m - 15)}{25}

it doesn't really matter they all mean the same

Step-by-step explanation:

1 2/5m - 3/5(2/5m + 1)

multiply first

1 2/5m - 6/25m - 3/5

multiply 1 2/5 only so the denominator is 25 as we can't simplify 6/25, it's so we can add them together, we can't add 3/5 tho bc it's a different term so there's no need to multiply that.

1 10/25m - 6/25m - 3/5

add/subtract

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4 0
2 years ago
If you were solving a system of equations and you came to a statement like 1= 3, what do you know about the solution to the syst
Vladimir79 [104]

Answer:

The system has no solution

Step-by-step explanation:

Encountering an incorrect mathematical statement anywhere within the solution such as

1 = 3 which of course is false

Indicates the system has no solution

6 0
3 years ago
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