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1 year ago

If you have 2 linear equations and you want to find where they have the same x- and y- value on a graph you look for the

Mathematics

1 answer:

marin [14]1 year ago

4 0

Answer:

Intersection of the two lines.

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Cobalt-60 has an annual decay rate of about 13%.

melomori [17]

The answer will be c

3 0

3 years ago

Read 2 more answers

-2(x+8)=4x+10 what is the solution set of the equation

dmitriy555 [2]

Short answer : x = -13/3

But let's solve your equation step-by-step.

-2(x+8)=4x+10

Step 1: Simplify both sides of the equation.

(Distribute)

Step 2: Subtract 4x from both sides

Step 3: Add 16 to both sides.

Step 4: Divide both sides by -6.

Answer:

x = -13/3

4 0

3 years ago

Timm drives at an average speed of 80km per hour for 3 hours and 45 minutes.

notka56 [123]

Answer:

300 km

Step-by-step explanation:

3 hours and 45 minutes = 3 $\frac{3}{4}$

Speed = 80 km per hour.

80 × 3 = 240 km

80 × $\frac{3}{4}$ = 60

240 + 60 = 300

3 0

3 years ago

The roots of the equation x^2+bx+c=0 are −4 and 2. Find b and Find c

ra1l [238]

Since its roots are -4 and 2 and a = 1 [The coefficient of x^2] we know that x^2 + bx + c = (x - (-4)) (x-2)=(x+4)(x-2) = 0. Using the distributive property we get, x^2 + 2x - 8 = 0. By equating coefficients (common strategy for partial fractions and undetermined coefficient method of solving ODE), we get b = 2 and c = -8.

Hope this helps :) If you spot a mistake in my work or have a question comment down below.

5 0

3 years ago

A forest fire is found at midnight. It covers 1200 acres then. It is spreading at a rate of f(t)= 5âˆšt acres per hour. By how m

Eddi Din [679]

Answer:

49 acres

Step-by-step explanation:

Given that:

Initial coverage = 1200 at midnight

Spread rate = 5√t acres per hour

By how many acres will the fire grow between 6am and 10 am

Hours between (6 - 10) am = 6 hours

Take the integral of the rate function with upper limit = 6 and lower limit = 0

∫5√t dt at t = 6, t = 0

5∫√tdt = 5∫t^1/2 dt at t = 6, t = 0

5 (t^1/2 + 1 / 1/2 + 1) at t = 6, t = 0

5 ( t^3/2 / 3/2) at t = 6, t = 0

5 * 2/3 (t^3/2)

[10/3 *t^3/2] at t = 6, t = 0

(10/3 * 6^3/2) - (10/3 * 0^3/2)

(10/3 * 14.696938) - 0

48.989794

= 49 acres ( approximately)

3 0

2 years ago