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Questions in mathematics

[Done] Simplify the expression below using order of operations. $(-10+(-5)) \times(-7)-1

[Done] Graph the data. Make sure you follow the TAILS rules of graphing: T - title (not vs.) A - axes I - interval L - labels funits S - scate A type of feed claims to boost the growth rate of cows. The feed is tested on two twin newborn cows. Bessie receives the experimental feed, and Bertha receives regular corn feed. Their weights are recorded below. | Month | April | | May | June | July | Aug | |--------|-------|---|-------|-------|-------|-------| | Bessie | 150 kg| | 210 kg| 260 kg| 320 kg| 400 kg| | Bertha | 150 kg| | 250 kg| 290 kg| 340 kg| 400 kg|

[Done] Craig and his friends buy a jumbo bag of Millicent's Mini Donuts at the fair. They sit at a picnic table to share them. Craig evenly distributes the donuts onto 4 napkins, one for each person in the group. Each napkin has 14 donuts. Which equation can you use to find the number of donuts [tex]$d$[/tex] in the bag? [tex]4 d=14[/tex] [tex]\frac{d}{4}=14[/tex] [tex]d+4=14[/tex] [tex]d-4=14[/tex] Solve this equation for [tex]$d$[/tex] to find the number of donuts in the bag.

[Done] Consider the point $(x, y)$ lying on the graph of the line $5x + 4y = 7$. Let L be the distance from the point $(x, y)$ to the origin $(0,0)$. Write $L$ as a function of $x$ and simplify.

[Done] Watch Video Evaluate the left hand side to find the value of $a$ in the equation in simplest form: [tex]\left(x^{\frac{2}{5}}\right)^{\frac{3}{2}}=x^a[/tex]

[Done] Find the difference: [tex]$\sqrt{20}-\sqrt{80}$[/tex]

[Done] Convert 65 milligrams to grams.

[Done] When asked to find the distance between the complex points $3+8 i$ and $7+6 i$, Zach showed the work below. $=\sqrt{(3-7)^2+(8 i-6 i)^2}$ $=\sqrt{(-4)^2+(2 i)^2}$ $=\sqrt{16+4 i^2}$ $=\sqrt{16-4}$ $=\sqrt{12}$ $=2 \sqrt{3}$ He asked his friend Zöe to find his mistake, and she correctly told him that he should have: A. subtracted the real and imaginary portions of the point in the same order. B. left the $i$ out of the computations when finding distance in the complex plane. C. remembered that -4 squared should be -16 , not 16 . D. simplified $\sqrt{12}$ to $2 \sqrt{2}$ not in $2 \sqrt{2}$

[Done] $(9x+15) + 3x^2 - 7x + 10

[Done] Solve the following system of equations graphically on the set of axes below. [tex]\begin{array}{c} y=x-5 \ y=-\frac{1}{2} x+7\\ \end{array}[/tex]