All categories

2 years ago

Looking for the answer and explanation for this equation 7xy=? x=1 y=3

Mathematics

2 answers:

Dmitrij [34]2 years ago

6 0

If you plug in the x and y, you get
7(1)(3)
7 x 1 x 3 = 21, so the answer is 21

m_a_m_a [10]2 years ago

3 0

Just plug in the values for x and y into the equation.
7xy = 7(1)(3) = 21

You might be interested in

Need help with this question ASAP! 20 points!

Delvig [45]

Answer:

6√3

Step-by-step explanation:

Use the sin formula, which is sin = opp / hyp

sin 60 = x / 12

x = 12 sin 60

x = 6√3

4 0

2 years ago

Situation:

Gala2k [10]

Answer:

5.5 days (nearest tenth)

Step-by-step explanation:

Given formula:

$\sf N=N_0e^{-kt}$

$\sf N_0$ = initial mass (at time t=0)
N = mass (at time t)
k = a positive constant
t = time (in days)

Given values:

$\sf N_0$ = 11 g
k = 0.125

Half-life: The time required for a quantity to reduce to half of its initial value.

To find the time it takes (in days) for the substance to reduce to half of its initial value, substitute the given values into the formula and set N to half of the initial mass, then solve for t:

$\begin{aligned}\sf N & = \sf N_0e^{-kt}\\\\\implies \sf \dfrac{11}{2} & = \sf 11e^{-0.125t}\\\\\sf \dfrac{1}{2} & = \sf e^{-0.125t}\\\\\sf \ln \left(\dfrac{1}{2}\right) & = \sf \ln e^{-0.125t\\\\\sf \ln \left(\dfrac{1}{2}\right) & = \sf -0.125t \ln e\\\\\sf \ln \left(\dfrac{1}{2}\right) & = \sf -0.125t(1)\\\sf t & = \sf \dfrac{\ln \left(\dfrac{1}{2}\right)}{-0.125}\\\\\sf t & = \sf 5.545177444...\\\\\sf t & = \sf 5.5\:\:days\:\:(nearest\:tenth)\end{aligned}$

Therefore, the substance's half-life is 5.5 days (nearest tenth).

Learn more about solving exponential equations here:

brainly.com/question/28016999

5 0

1 year ago

Read 2 more answers

The map of Colorado scale says that the scale is 1 inch to 20 miles or 1 to 1,267,200. Are these two ways of reporting the scale

sergiy2304 [10]

Answeok

Step-by-step explanation:

3 0

3 years ago

A six-sided die is rolled in a trial. What are the chances that the outcome is 2 or more?

NNADVOKAT [17]

To have the outcome of 2 or more, we can roll out a 2,3,4,5 or 6.

So, the chance of getting the outcome is 2 or more is 5/6

And, 5/6 is pretty much likely to happen. (around 80% or so)

5 0

2 years ago

<img src="https://tex.z-dn.net/?f=1%20%2B%205%20%5Ctimes%206y" id="TexFormula1" title="1 + 5 \times 6y" alt="1 + 5 \times 6y" al

Levart [38]

Answer:

30y+1

Step-by-step explanation:

1+5x6y

1+30y

30y+1

6 0

3 years ago