Which expression uses the greatest common factor and distributive property to find 10+50?

Answers

Answer 1

Answer: ab+ac=a(b+c) where a is the greatest common factor
find greatest common factor of 10 and 50
10=1,2,5,10
50=1,2,5,10,25,50
greatest common is 10
a=10
10(1)+10(5)=10(1+5)=10(6)=60

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There were 30 days last month, and students attended class 70% of those days. How many days, d, did students attend class last month?

Answers

70% of 30 is 21 so 21x30=630

How high is the tree 4m,5m=cm

Answers

If 5m = cm, then m = 1/5cm
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Which is an equation in point-slope form for the given point and slope?Point: (1, –7); Slope:

A.
y-7=-2/3(x+1)

B.
y-7=2/3(x-1)

C.
y+7=-2/3(x-1)

D.
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Answers

$\sf~y-y_1=m(x-x_1)$

Where y1 is the y-value of the point, x1 is the x-value, and 'm' is the slope.

In this case:

y1 = -7
x1 = 1
m = -2/3

Plug them in:

$\sf~y-(-7)=-(2)/(3)(x-1)$

or

$\boxed{\sf~y+7=-(2)/(3)(x-1)}$

Solve the system of equations; x - 2y = 2 and 3x - 5y = 9 by writing and solving a matrix equation. Show all your work.

Answers

y= $(28)/(11)$
x= $(3)/(11)$

Working;
Start by forming a matrix as shown below;
$\left[\begin{array}{ccc}1&-2\n3&5\end{array}\right] ( \left[\begin{array}{ccc}x\ny\end{array}\right])= ( \left[\begin{array}{ccc}2\n9\end{array}\right])$

Step II
Finding the inverse of the matrix as shown below;
Determinant;
(1*5)-(3*(-2)=11
Inverse;
$(1)/(11) \left[\begin{array}{ccc}5&2\n-3&1\end{array}\right] \left[\begin{array}{ccc}1&-2\n3&5\end{array}\right] \left[\begin{array}{ccc}x\ny\end{array}\right]= (1)/(11) \left[\begin{array}{ccc}5&2\n-3&1\end{array}\right] \left[\begin{array}{ccc}2\n9\end{array}\right]$

Evaluating further;
$(1)/(11) \left[\begin{array}{ccc}11&0\n0&11\end{array}\right] \left[\begin{array}{ccc}x\ny\end{array}\right] = (1)/(11) \left[\begin{array}{ccc}28\n3\end{array}\right]$

x= $(28)/(11) and y = (3)/(11)$

Please help me, I really need help. I will mark brainliest answer!! A bald eagle can eat 3.85 kilograms of fish in a week. The eagle eats the same amount each day. How many grams of fish will the eagle eat in a day?

Answers

3.85÷7 is =55 grams can be eaten.

well you need to divide 3.85 by 7 which would give you 0.55

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Answers

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