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3 years ago

Question in picture please use the picture and write it down

Mathematics

1 answer:

UkoKoshka [18]3 years ago

5 0

Answer:

Radius is 2.

2πr= 4π

r=4π/2π

r=2

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Solve the system below using elimination {5x+9y= -10} {7x+10y= -1}

bixtya [17]

∑Hey , jillianwagler ⊃

Answer:

x = 7, y = -5

Step-by-step explanation:

Given~:

Solve the system below using elimination

{5x+9y= -10}

{7x+10y= -1}

Solve:

$\begin{bmatrix}5x+9y=-10\\ 7x+10y=-1\end{bmatrix}$

Isolate x ( 5x + 9y = -10 ) : $\mathrm{x=\frac{-10-9y}{5}}$

Substitute: $\mathrm{x=\frac{-10-9y}{5}}$

$\begin{bmatrix}7\cdot \frac{-10-9y}{5}+10y=-1\end{bmatrix}$

$\begin{bmatrix}\frac{-70-13y}{5}=-1\end{bmatrix}$

Isolate y : $\frac{-70-13y}{5}=1:y=-5$

Substitute: $y=-5$

$x=\frac{-10-9\left(-5\right)}{5}=7$

Hence, $x=7$

Therefore, the solution for $\begin{bmatrix}5x+9y=-10\\ 7x+10y=-1\end{bmatrix}$ are:

$x=7,\:y=-5$

xcookiex12

8/19/2022

6 0

2 years ago

Monica reads seven one half pages of a mystery book in nine minutes what is her average reading rate in pages per minute j

djverab [1.8K]

she can read a total of 0.83 pages a minute if she reads at the pace she was reading at because if you take the amount of pages she read (7.5) and you divide by the amout of minutes read (9) then you can see if she read at a constant rate she would read 0.83 pages a minute

6 0

3 years ago

Ordered pair is a solution of equation y=3x-7

Xelga [282]

Add 7 to both sides
Y+7=3
Divide both sides by 3
Y+7/3=x
Switch sides
X=y+7/3

6 0

3 years ago

What does 21/8= as a mixed number?

anyanavicka [17]

Answer:

The answer is 2 6/8

Step-by-step explanation: