3 years ago

Find the solution set of the system of equations below y=1/2x-1 and x+y=4

Mathematics

1 answer:

DerKrebs [107]3 years ago

4 0

I hope this helps you

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Express 78 billion in scientific notation

ryzh [129]

Answer:

$7.8 * 10^{10}$ is scientific notation of 78 billion

Step-by-step explanation:

For scientific notation , follow the following notation:

$a * 10^{b}$ -------->(equation 1)

Let, $a^{'} = 78 billion$

$a^{'} = 78000000000$

$a^{'} = 78000000000.0$

In standard form

$a = 7.8000000000$

$a = 7.8$

As decimal point move 10 places from right to left, therefore

b = 10

Put the value of 'a' and 'b' in (equation 1)

$7.8 * 10^{10}$ is scientific notation of 78 billion

6 0

3 years ago

Snow is falling steadily in Syracuse, New York. After 2 hours, 4 inches of snow has fallen. Write an equation that gives the amo

-Dominant- [34]

Answer:

y=2x

it already gives you that in 2 hours four inches of snow has fallen. to find one hour you would basically just divide it in half

8 0

2 years ago

Can anyone help please with 6 and 7 I’m in desperate need of can someone help please and God bless

saw5 [17]

6.) 9
5(9)+18=63
Divide 9+13x (since its the entire line) by 2 to get 4.5+6.5x so it can equal Half
4.5+6.6(9)=63

7.) IF=HF
The three lines indicate they are equal to eachother

Hope that helps!

8 0

2 years ago

If the volume of a cube is 64 cm cube then find its total surface area

bogdanovich [222]

Answer:

tsa

Step-by-step explanation:

tsa of cube is 6a²

64cm²=6a²

3 0

3 years ago

Read 2 more answers

Exponential function: f(x) = 5 ∗ <img src="https://tex.z-dn.net/?f=3%5E%7Bx%7D" id="TexFormula1" title="3^{x}" alt="3^{x}" align

Vesnalui [34]

Answer:

See below.

(I only answered the first one b/c the second log function doesn't really make sense, sorry!)

Step-by-step explanation:

1. f(x) = 5 × $3^{x}$

Plug in 5 points.

x = -2, f(x) = $\frac{5}{9}$

x = -1, f(x) = $\frac{5}{3}$

x = 0, f(x) = 5

x = 1, f(x) = 15

x = 2, f(x) = 45

2. Attached below.

3. Increasing

4. Domain: x = all real numbers

Range: f(x) > 0 (because the line never goes below the x-axis)

3 0

3 years ago