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4 years ago

Two angle measures in a triangle are 42° and 39°. What type of triangle is it?

Mathematics

2 answers:

Alexxandr [17]4 years ago

5 0

?? Scalene triangle because none of the angles are the same

matrenka [14]4 years ago

4 0

180 -(42+39)=180-81=99 (3d angle is more than 90, it is 99, obtuse angle),
if triangle has one obtuse angle , then it is B. obtuse

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if a line crosses the y-axis at (0, 1) and has a slope of `4/5`, what is the equation of the line? A. 4y − 5x = 5 B. y − 4x = 5

slamgirl [31]

Answer:

option (d) is correct.

if a line crosses the y-axis at (0, 1) and has a slope of $\frac{4}{5}$ , then equation of line is 5y - 4x = 5.

Step-by-step explanation:

Given : if a line crosses the y-axis at (0, 1) and has a slope of $\frac{4}{5}$ .

We need to find the equation of line.

Equation of line is of the form y = mx + c, where m is the slope of line and c is the y- intercept. that is the point where line meets y- axis.

Given y intercept at (0, 1 ) ⇒ c = 1

Also, slope m = $\frac{4}{5}$

Substitute it in equation, we get ,

y = mx + c ⇒ $y=\frac{4}{5}x+1$

Solving , we get equation of line as ,

5y = 4x + 5 ⇒ 5y - 4x = 5

Thus, option (d) is correct.

if a line crosses the y-axis at (0, 1) and has a slope of $\frac{4}{5}$ , then equation of line is 5y - 4x = 5.

5 0

3 years ago

Read 2 more answers

Suppose a hexagonal traffic sign is dilated by a scale factor of 2.5 about its center. Which statement is true? A. The dilated s

xeze [42]

Hexagonal implies that the traffic sign has six straight sides. But dilating it changes its length of sides, but not its angles. So that the statement that is true is option B.

i.e B. The dilated sign will have corresponding line segments that are proportional to those of the pre-image and corresponding angles that are congruent to that of the pre-image.

Dilation involves increasing or decreasing the line segments of a given shape by a scale factor. This process do not affect the measure of the internal angles of the shape.

Given a hexagonal traffic sign in the question, this implies that the traffic sign has six sides. Dilating it by a scale factor of 2.5 about its center would affect its length of sides. So that the statement that is true is option B.

i.e B. The dilated sign will have corresponding line segments that are proportional to those of the pre-image and corresponding angles that are congruent to that of the pre-image.

Visit: brainly.com/question/8285347

4 0

3 years ago

7 2,451 people came to watch the Easter parade. 745 of those people were adults. How many children came to the parade?

lukranit [14]

Take to total number of people attending and subtract the number of adults. The remainder are the children

2,451 - 745 = 1,706

7 0

3 years ago

If a car reaches speeds of 0-100 mph in 0.8 seconds, how many mph will it reach in 1 second?

zvonat [6]

Answer:

125 mph

Step-by-step explanation:

This can be calculated as a simple rule of 3.

In rule of 3 problems, you need to first identify the measures and whether they are direct or inverse to each other.

If they are direct to each other, if one value increases the other will increase too. For example, lets suppose that the Buffalo Bills have won 3 of 4 games. When there are 8 games, then will have won 6, keeping this proportion. Here, the measures are the number of games and the number of Buffalo Bills wins.

Now if they are inverse to each other, if one value increases the other will decrease. For example, if you travel at 60 mph, you will need 6 hours to arrive at your destination. At 80 mph, you will need less time. So, a the average speed increases, the time you need will decrease.

In this case the speeds is proportional to the time. So, if the time increases, the speed will increase too. It can be calculated by the following rule of 3.

Speed Time

100 mph - 0.8 seconds

x mph - 1 second

x = 100/0.8 = 125 mph.

4 0

3 years ago

Mealworms are a healthy food for wild song birds. Adam buys a 3 oz container of mealworms for $7.35. Marco buys a 5 oz container

Artemon [7]

Answer: 5 oz

Step-by-step explanation:

you get more and for the price of 7.35 it’s not worth only getting three oz

3 0

3 years ago