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tatuchka [14]
3 years ago
11

Expand the following:

Mathematics
1 answer:
Jet001 [13]3 years ago
3 0
Yes that is correct good job
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Ratio for 30 boys to 50 girls
S_A_V [24]

Answer:

30:50 OR Can reduce it to 3:5

Step-by-step explanation:

30: 50 OR 3.5

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Predict how much money can be saved without having a negative actual net income.
satela [25.4K]

$170 can be saved resulting in an actual net income of $0.

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If PQ = 6x - q and PR = 15x - 29, then QR =?
Pepsi [2]
\begin{gathered} PQ=6x-1 \\ PR=15x-29 \\ QR=? \\ QR=PR-PQ \\ QR=15x-29-(6x-1) \\ QR=15x-29-6x+1 \\ QR=9x-28 \\ 2PQ=PR \\ 2(6x-1)=15x-29 \\ 12x-2=15x-29 \\ 12x-15x=-29+2 \\ -3x=-27 \\ x=\frac{27}{3} \\ x=9 \\ QR=9(9)-28 \\ QR=81-28 \\ QR=53 \\ \text{The value of QR is 53} \end{gathered}

5 0
1 year ago
Can someone please explain how the answer is D
Kitty [74]

Step-by-step explanation:

Because the length of ST is calculated using pythagorean theorem:

{c}^{2}  =  {a}^{2}  +  {b}^{2}

Where the square of the hypotenuse is equal to the sum of squares of the other two sides of a right triangle. In this case, the hypotenuse is ST and the other two sides are distances between S and T over the X and Y axis. Those are easily calculated:

x =  |sx - tx|  \\ y =  |sy - ty|

Where x is the distance between S and T over X axis and Y distance over Y axis, sx and tx are X coordinates of S and T, sy and ty are Y coordinates of S and T.

Using that formula, you get that y = 17 and x = 8.

Back to the pythagorean theorem, if we put those number in the formula of the pythagorean theorem, we get something like this:

{c}^{2}  =  {x}^{2}  +  {y}^{2} \\  {c}^{2}  =  {8}^{2}  +  {17}^{2} = 64 + 289  \\  {c}^{2}  = 353 \\ c =  \sqrt{353}

And finally, the correct answer is in fact 353.

3 0
3 years ago
What is the equation, in slope-intercept form, of the line that passes through (0, −2) and has a slope of −3?
Julli [10]

Answer:

y= -3x-2

Step-by-step explanation:


4 0
3 years ago
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