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3 years ago

You’ll receive brainlest if you answer this correctly goes to the first person btw!

Mathematics

1 answer:

Gnesinka [82]3 years ago

7 0

Answer:

139 km

Step-by-step explanation:

$a^{2} + b^{2} = c^{2}$

$50^{2} + 130^{2} = c^{2} \\2500 + 16900 = 19400^{2}\\$

$\sqrt{19400}$ = 139.28

Round to the nearest whole number = 139

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Triangle ABC is an obtuse triangle with the obtuse angle at vertex B. Angle A must be

kvv77 [185]

Answer:

Angle A must be acute.

Explanation:

Both angle A and C must be acute. The sum of the angles in a triangle is 180°.

An obtuse angle is more than 90°, so the sum of the remaining 2 angles has to be less than 90°.

Note that it is impossible to have:

2 right angles in a triangle, because 90°+90°=180° and the third angle still needs to be added.1 obtuse and 1 right angle in a triangle, their sum is more than 180°2 obtuse angles in a triangle, their sum is more than 180°

It is possible to have an obtuse-angled isosceles triangle, but the vertex angle must be obtuse and the equal base angles will be acute.

8 0

3 years ago

1/5 divided by 5/8= Please help me !!

Neporo4naja [7]

Answer:

8/ 25

Step-by-step explanation:

hope it helps!

.....

5 0

3 years ago

Solve the system of equations with graph as given below. Write the solution as an ordered pair (x, y).

otez555 [7]

Answer:

(5,-2)

Step-by-step explanation:

The two equations are y=-x+3 and y=x-7

Their point of intersection, (5,-2), is the ordered pair solution to the system of equations.

8 0

3 years ago

Which equation represents a line that passes through (4,1/3) and has a slope of 3/4?

velikii [3]

We can use the point-slope equation:
$y = mx + b$
m, the slope, is 3/4:
$y = \frac{3}{4} x + b$
To find b, we plug in the point (4,1/3):
$( \frac{1}{3} ) = \frac{3}{4} (4) + b \\ \frac{1}{3} = 3 + b \\ \frac{1}{3} = \frac{9}{3} + b$
$- \frac{8}{3} = b$

Therefore, the point-slope equation is
$y = \frac{3}{4} x - \frac{8}{3}$

Now we have to see which answer matches.

$y - \frac{3}{4} = \frac{1}{3} (x - 4) \\ y - \frac{3}{4} = \frac{1}{3} x - \frac{4}{3} \\ y - \frac{9}{12} = \frac{1}{3} x - \frac{16}{12}$
$y = \frac{1}{3} x - \frac{7}{12}$
Since this is not the same, we try the next one.

$y - \frac{1}{3} = \frac{3}{4} (x - 4) \\ y - \frac{1}{3} = \frac{3}{4} x - 3 \\ y - \frac{1}{3} = \frac{3}{4} x - \frac{9}{3}$
$y = \frac{3}{4} x - \frac{8}{3}$

This is the same, so this is the answer. We should still double-check the other answers.

$y - \frac{1}{3} = 4(x - \frac{3}{4} ) \\ y - \frac{1}{3} = 4x - 3 \\ y - \frac{1}{3} = 4x - \frac{9}{3}$
$y = 4x - \frac{8}{3}$
This one is not equivalent.

$y - 4 = \frac{3}{4} (x - \frac{1}{3} ) \\ y - 4 = \frac{3}{4} x - \frac{1}{4} \\ y - \frac{16}{4} = \frac{3}{4} x - \frac{1}{4}$
$y = \frac{3}{4} x + \frac{15}{4}$
This one also does not work.

The answer is the second one:
$y - \frac{1}{3} = \frac{3}{4} (x - 4)$

3 0

3 years ago

Read 2 more answers

What is 2/3 of 3/5 ?

Greeley [361]

Answer:

$\frac{2}{5}$