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ivanzaharov [21]
3 years ago
12

Pls help i appreciate them so muchh

Mathematics
1 answer:
Flauer [41]3 years ago
5 0

Answer:

Choice C

Step-by-step explanation:

4x+80=180 degrees

summation of all angles in a triangle is 180°

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Someone help me with this question please I’ll mark u as brilliant :))
SCORPION-xisa [38]

Answer:

3\sqrt{141}

Step-by-step explanation:

Use the Pythagorean Theorem.

37^{2}=x^{2}+10^{2}

1369=x^{2}+100

-100       -100

1269=x^{2}

\sqrt{1269}=\sqrt{x^{2} }

3\sqrt{141}=x

3 0
3 years ago
Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 20. Find the prob
Ipatiy [6.2K]

Answer:

Randomly selected adult has an IQ less than 136 is 0.9641

Step-by-step explanation:

It is given that, it is normal distribution with mean 100 and SD as 20.

So, let's use the formula of z-score

z=\frac{x-mean}{SD}

For this problem,

x= 136

Plug in this value into the formula

z-score=\frac{136-100}{20}

       =1.8

Now, use z-score table to find the probability

Find the corresponding value for the row 1.8 and the column 0.00, we do get 0.9641

So, Randomly selected adult has an IQ less than 136 is 0.9641

3 0
3 years ago
Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks.
nataly862011 [7]

Answer:

Step-by-step explanation:

x = small barrettes

y = large barrettes

13x + 11y = 142.......multiply by -1

13x + 12y = 149

-----------------------

-13x - 11y = -142 (result of multiplying by -1)

13x + 12y = 149

------------------------add

y = 7..........large barrettes used 7 yards

13x + 11y = 142

13x + 11(7) = 142

13x + 77 = 142

13x = 142 - 77

13x = 65

x = 65/13

x = 5........small barrettes used 5 yards

4 0
3 years ago
ADVANCED LEVEL
Deffense [45]

Answer:

The temperature in the next morning is -4°C

Step-by-step explanation:

-11 °C + 7 °C = -4 °C

Since rises means increase or add

3 0
3 years ago
Read 2 more answers
The function rule T(m) = 450 − 8m represents the amount of water T(m) (in liters) in a holding tank after being drained at a rat
vfiekz [6]
The answer is C, 22 minutes.
4 0
4 years ago
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