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2 years ago

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Which equation can be used to find the unknown length, a, in this triangle? a² + 15² = 17² 15² + 17²= a² a² + 15 = 17² a + 15² =

17²

1 answer:

mars1129 [50]2 years ago

8 0

Answer:

a^2 + 15^2 = 17^2

Step-by-step explanation:

This is a right triangle so we can use the Pythagorean theorem

a^2 + b^2 =c^2

where a and b are the legs and c is the hypotenuse

a^2 + 15^2 = 17^2

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Can someone help me with this simple math problem, you can easily get points if you know the answer correctly. Also I will mark

Mekhanik [1.2K]

Answer:

RATIONAL

Step-by-step explanation:

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2 years ago

Read 2 more answers

A floor is made up of 20 triangular tiles, each with sides 40 cm, 24 cm and 32 cm. Find the cost of polishing the floor at the r

pochemuha

Answer:

$15360\,\,rupees$

Step-by-step explanation:

Let sides of the triangle be $a,b,c$

$a=40\,,\,b=24\,,\,c=32$

Semi-perimeter (s) = $\frac{a+b+c}{2}$

$=\frac{40+24+32}{2}\\ =\frac{96}{2}\\=48$

Area of one tile $=\sqrt{s(s-a)(s-b)(s-c)}$

$=\sqrt{48(48-40)(48-24)(48-32)}\\ =\sqrt{48(8)(24)(16)}\\ =\sqrt{147456} \\=384\,\,cm^2$

So,

Area of 20 tiles $=20(384)=7680\,\,cm^2$

Cost of polishing the floor at the rate of 2 rupees per sq.cm = $7680(2)=15360\,\,rupees$

7 0

2 years ago

I need help quickly please!

nadya68 [22]

Its is c because you times 301.9 by 24

8 0

2 years ago

Solve for x<br> 20 points

torisob [31]

Answer:

x = 21 units

Step-by-step explanation:

<em>The tangent squared is equal to the secant's total length multiplied by the secant's length without the part inside the circle.</em>

So here, that will look like: <em>36² = 27 * (27 + x)</em>

Expansion and multiplication gives us: <em>1296 = 729 + 27x</em>

Subtract from both sides: <em>567 = 27x</em>

Divide from both sides: x = 21.

4 0

2 years ago

What similarity property, if any, can be used to show that the following two triangles are similar ?

Natalka [10]

Answer:

A) SSS

Step-by-step explanation:

We have,

$\frac{AC}{DF}=\frac{10}{15}=\frac{2}{3}\\\frac{AB}{DE}=\frac{12}{18}=\frac{2}{3}\\\frac{BC}{EF}=\frac{8}{12}=\frac{2}{3}\\\text{Thus,}\\\frac{AC}{DF}=\frac{AB}{DE}=\frac{BC}{EF}\\$

Since the sides are in proportion, the two triangles are similar by the SSS test.

6 0

2 years ago