All categories

3 years ago

Find 0.5 of 60 and 130% of 80

Mathematics

1 answer:

wariber [46]3 years ago

7 0

.5 (50%) of 60 is 30. 130% of 80 is 104.

You might be interested in

Factor the expression over the complex numbers. x^2 + 72

Ivan

No solution simply because the expression cannot be solved with rational numbers

7 0

3 years ago

This hyperbola is centered at theorigin. Find its equation.Foci: (-2,0) and (2,0)Vertices: (-1,0) and (1,0)

beks73 [17]

SOLUTION

From the question, the center of the hyperbola is

$\begin{gathered} (h,k),\text{ which is } \\ (0,0) \end{gathered}$

a is the distance between the center to vertex, which is -1 or 1, and

c is the distance between the center to foci, which is -2 or 2.

b is given as

$\begin{gathered} b^2=c^2-a^2 \\ b^2=2^2-1^2 \\ b=\sqrt[]{3} \end{gathered}$

But equation of a hyperbola is given as

$\frac{(x-h)^2}{a^2}-\frac{(y-k)^2}{b^2}=1$

Substituting the values of a, b, h and k, we have

$\begin{gathered} \frac{(x-0)^2}{1^2}-\frac{(y-0)^2}{\sqrt[]{3}^2}=1 \\ \frac{x^2}{1}-\frac{y^2}{3}=1 \end{gathered}$

Hence the answer is

$\frac{x^2}{1}-\frac{y^2}{3}=1$

5 0

11 months ago

gia is thinking of a number which she calls n. She adds 4 to the number and then doubles the sum. Write an expression to represe

Korvikt [17]

It should be 2(n+4)

3 0

2 years ago

Read 2 more answers

3 decagrams = centgrams

notsponge [240]

Answer:

3,000

Step-by-step explanation:

Just multiply every decagram by 1,000

7 0

3 years ago

What are the two things that happen to water molecules when heat energy is added to air?

yuradex [85]

Answer:

When the heat is raised (for instance, as water is boiled), the higher kinetic energy of the water molecules causes the hydrogen bonds to break completely and allows water molecules to escape into the air as gas. We observe this gas as water vapor or steam.

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers