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3 years ago

-10(4-10x)+5(1-10x)

Mathematics

2 answers:

pochemuha3 years ago

8 0

Answer:

Multiply the first bracket by -10

Multiply the second bracket by +5

-40+100x+5-50x

100x-50x-40+5

50x-35

Answer is 50x-35

Ugo [173]3 years ago

3 0

The answer is 50x-35.hope this helps.if it does please mark brainliest

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umka2103 [35]

136% increase I think

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3 years ago

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ahrayia [7]

Answer:

A = 110 degrees.

Step-by-step explanation:

< A and < B are same side angles so their values add up to 180 degrees, so:

5x + 20 + 9x - 92 = 180

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3 years ago

The scale on a model of a frog is 2 cm = 25 mm. Find the actual length

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Answer:

137.5

Step-by-step explanation:

2=25

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3 years ago

Calculate the slope of the line going through A(-4,3) and B(0,6) PLEASE ANSWER

Alex

Answer:

6-3/0-(-4)

=3/4

Step-by-step explanation:

Given two points of a line to find the slope, we use the formula.y2-y1/x2-x1 hence the answer above. Our xs are x2=0 x=-4 y2=6 y1=3

7 0

3 years ago

The equation of circle having a diameter with endpoints (-2, 1) and (6, 7) is

densk [106]

Answer:

$(x-2)^{2}+(y-4)^{2}=25$

Step-by-step explanation:

step 1

Find the diameter of the circle

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

$A(-2,1)\\B(6,7)$

substitute the values

$d=\sqrt{(7-1)^{2}+(6+2)^{2}}$

$d=\sqrt{(6)^{2}+(8)^{2}}$

$d=\sqrt{100}$

$d=10\ units$

The radius is half the diameter

$r=10/2=5\ units$

step 2

Find the center of the circle

the center of the circle is the midpoint between the endpoints of the diameter

The center is

$(\frac{-2+6}{2},\frac{1+7}{2})$

$(2,4)$

step 3

Find the equation of the circle

The equation of the circle is

$(x-h)^{2}+(y-k)^{2}=r^{2}$

substitute the values

$(x-2)^{2}+(y-4)^{2}=5^{2}$

$(x-2)^{2}+(y-4)^{2}=25$

8 0

3 years ago