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1 year ago

A group of friends collected toys to donate to children in need. After sorting the toys into

Mathematics

1 answer:

zmey [24]1 year ago

3 0

Answer: 12/7

Step-by-step explanation: The answer is 12/7 because here is what we know: A group of friends collected toys to donate to children in need. After sorting the toys into boxes, that's what we know, we also know that they found they had 6/7 of a box of stuffed animals, and we also know that they found 5/7 of a box of board games and

1/7 of a box of doll. What they want to know is In total, how many boxes of toys did the friends collect? so you take 6/7 from the box stuffed animals they found + 5/7 from the box of board games they found which equals 11/7 then you add the 11/7 with the 1/7 the box of dolls they found. In total the friends collect 12/7 boxes. Hope this helps!

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5 more than a number x is -4

RSB [31]

Answer:

x = -9

Step-by-step explanation:

x = unknown

x+5 = -4

reverse it

-5 + -4 = -9

this will work from the fact that if x is equal to 5 more than -4 you would reverse it so that it is negative 4 - 5 which would be -9

3 0

3 years ago

Solve a = d+c /b for d.

Ostrovityanka [42]

Answer:

d = ab - c

Step-by-step explanation:

$a = \frac{d + c}{b} \\$

multiply both sides by b, $b \neq 0.$

ab = d + c

d = ab - c

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3 years ago

Find the value of k for which the given function is a probability density function. f(x = kekx on [0, 2]

liraira [26]

Reading this as

$f_X(x)=\begin{cases}ke^{kx}&\text{for }x\in[0,2]\\0&\text{otherwise}\end{cases}$

For $f_X(x)$ to be a valid PDF, the integral over its support must equal 1:

$\displaystyle\int_{-\infty}^\infty f_X(x)\,\mathrm dx=\int_{x=0}^{x=2} ke^{kx}\,\mathrm dx=1$

Let $y=kx$ , so that $\dfrac{\mathrm dy}k=\mathrm dx$ and the integral becomes

$\displaystyle\int_{y=0}^{y=2k}ke^y\,\dfrac{\mathrm dy}k=\int_0^{2k}e^y\,\mathrm dy=e^y\bigg|_{y=0}^{y=2k}=1$
$e^{2k}-e^0=1$
$e^{2k}-1=1$
$e^{2k}=2$
$\ln e^{2k}=\ln2$
$2k=\ln 2$
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4 years ago

What is the next term of the arithmetic sequence? 7,11,15,19,7,11,15,19

natima [27]

Answer:

Step-by-step explanation:

4 times at an addition of 4, then a subtraction of 12

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3 years ago

W+3 3/8=1 5/6 what does w equal?

Lapatulllka [165]

Answer:

i believe the answer is w equals negative 37 over 24

Step-by-step explanation:

solve for w by simplifying both sides by the equation and then isolate the variable.

5 0

3 years ago