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3 years ago

Please help me with this math problem!!

Mathematics

1 answer:

xz_007 [3.2K]3 years ago

4 0

Answer:

y=3

Step-by-step explanation:

This is an isosceles triangle because the two angles at the bottom are equal.

This means the two sides are equal

5y-2 = 13

Add 2 to each side

5y-2+2 =13+2

5y = 15

Divide each side by 5

5y/5 = 15/5

y =3

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2 years ago

Name a pair of complementary angles.

allochka39001 [22]

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2 years ago

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Step-by-step explanation:

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2 years ago

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A map has a scale of 2 cm: 11 m. The actual distance x from point A to point B, if these two points are 12

ahrayia [7]

9514 1404 393

Answer:

B. 66 m

Step-by-step explanation:

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2 years ago

PLS HELP ME!!! The figure is made up of a cone and a hemisphere. To the nearest whole number, what is the approximate volume of

Pachacha [2.7K]

Hello!

The figure is made up of a cone and a hemisphere. To the nearest whole number, what is the approximate volume of this figure? Use 3.14 to approximate π . Enter your answer in the box. cm³

Data: (Cone)

h (height) = 12 cm

r (radius) = 4 cm (The diameter is 8 being twice the radius)

Adopting: $\pi \approx 3.14$

V (volume) = ?

Solving: (Cone volume)

$V = \dfrac{ \pi *r^2*h}{3}$

$V = \dfrac{ 3.14 *4^2*\diagup\!\!\!\!\!12^4}{\diagup\!\!\!\!3}$

$V = 3.14*16*4$

$\boxed{V = 200.96\:cm^3}$

Note: Now, let's find the volume of a hemisphere.

Data: (hemisphere volume)

V (volume) = ?

r (radius) = 4 cm

Adopting: $\pi \approx 3.14$

If: We know that the volume of a sphere is $V = 4* \pi * \dfrac{r^3}{3}$ , but we have a hemisphere, so the formula will be half the volume of the hemisphere $V = \dfrac{1}{2}* 4* \pi * \dfrac{r^3}{3} \to \boxed{V = 2* \pi * \dfrac{r^3}{3}}$