3 years ago

What’s the answer for this question

Mathematics

2 answers:

slavikrds [6]3 years ago

7 0

Answer:

J. 28.

Step-by-step explanation:

Since there are 180 degrees in a triangle the sum of the 2 unknown angles = 180 - 50 = 130, so we have the equation:

2x + 3x - 10 = 130

5x = 140

x = 28.

Masteriza [31]3 years ago

5 0

Answer:

x=28

Step-by-step explanation:

degrees of a triangle is always 180

2x+3x=5x

5x - 10 + 50

5x + 40

180 - 40 = 140

5x = 140

140/5 = 28

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Fed [463]

Not sure for (b)

Step-by-step explanation:

(a)55+80+x=180 (angles inside the triangle)

135+×=+180

x=180-135

x=45

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2 years ago

24÷(−4)+(−2)⋅(−5)= who wants to get brain list if you explain nd answer

Tatiana [17]

Answer:

Step-by-step explanation:

24÷(-4)+(-2)·(-5)

-6+(-2)·(-5)

-6+10

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3 years ago

Which ordered pair is a solution of the equation? 7x-2y=-57x−2y=−5

Yuri [45]

Answer:

what ordered pairs?

Step-by-step explanation:

6 0

2 years ago

Julius bought F boxes of 24 plastic forks. He already had 39 plastic forks. Now, he has 135 plastic forks. How many boxes of pla

mr_godi [17]

Answer:

Step-by-step explanation:

boxes are the f. the amount in each is 24. theses will be mulitplied. then you want to add what he already had. that's the +39

8 0

3 years ago

Find the z score that cuts-off the largest 9% under the standard normal curve. a) -1.34 b) 1.34 c) 0.536 d) 1.28

topjm [15]

Answer:

b) 1.34

Step-by-step explanation:

The z score is used to determine the number of standard deviations by which the raw score is above or below the mean. If the z score is positive then the z score is above the mean while for a negative z score implies that it is below the mean. The z score is given by:

$z=\frac{x-\mu}{\sigma}$

For the largest 9%, the score is 100% - 9% = 91% = 0.91

From the normal distribution table, the z score that corresponds to 0.91 is 1.34

4 0

3 years ago