4 years ago

Which statement describes the mapping?

Mathematics

1 answer:

SVEN [57.7K]4 years ago

6 0

The answer is B. because two x-values can't be the same y-value

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Studio532's print shop knows that it sells 5 5x7 prints for every 2 8x10 prints it sells.

user100 [1]

Answer:

200

Step-by-step explanation:

The ratios is 5 to 2 - so if you divide 500/5 = 100 then multiply 2 * 100 (the same rate) to keep the ration intact.

6 0

3 years ago

The letters that form probability are placed in a bowl, what is the probability of choosing a letter b replacing it and the draw

NARA [144]

I believe the answer is b.4/11

7 0

4 years ago

Solve the equations. Show your work.<br> 1. a? – 49 = 0

Mademuasel [1]

Answer:

$\boxed{a = 7~~or~~a = -7}$

Step-by-step explanation:

$a^2 - 49 = 0$

$a^2 = 49$

$a = \pm \sqrt{49}$

$a = \pm 7$

3 0

3 years ago

(15 pts) 4. Find the solution of the following initial value problem: y"-10y'+25y = 0 with y(0) = 3 and y'(0) = 13

jolli1 [7]

Answer:

$y(x)=3e^{5x}-2xe^{5x}$

Step-by-step explanation:

The given differential equation is $y''-10y'+25y=0$

The characteristics equation is given by

$r^2-10r+25=0$

Finding the values of r

$r^2-5r-5r+25=0\\\\r(r-5)-5(r-5)=0\\\\(r-5)(r-5)=0\\\\r_{1,2}=5$

We got a repeated roots. Hence, the solution of the differential equation is given by

$y(x)=c_1e^{5x}+c_2xe^{5x}...(i)$

On differentiating, we get

$y'(x)=5c_1e^{5x}+5c_2xe^{5x}+c_2e^{5x}...(ii)$

Apply the initial condition y (0)= 3 in equation (i)

$3=c_1e^{0}+0\\\\c_1=3$

Now, apply the initial condition y' (0)= 13 in equation (ii)

$13=5(3)e^{0}+0+c_2e^{0}\\\\13=15+c_2\\\\c_2=-2$

Therefore, the solution of the differential equation is

$y(x)=3e^{5x}-2xe^{5x}$

5 0

3 years ago

Beth has $300 in her bank account. She buys x shirts for $20 each.

nydimaria [60]

300-20x less than our equal to 100

7 0

3 years ago

Read 2 more answers