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My name is Ann [436]
3 years ago
8

Please do them all please

Mathematics
1 answer:
san4es73 [151]3 years ago
4 0

Answer:

7(3 + 3x)  =  21x + 21

2d + 10(4d +4 + 2a)  =  20a + 42d + 40

3t + 2x + x  =  3t + 3x

5(r + 12) - 25  =  5r + 35

18s + 12rs + 10r - 2rs  =  10rs + 10r + 18s

s(12 - 4) + 2  =  8s + 2

w(15 - 3) + 2 + 7w  =  19w + 2

Step-by-step explanation:

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Please helpp<br> What is the area of the purple region? <br> What is the area of the green region?
butalik [34]

what do we need to know:

the radius of the semi circles;

the area of:

  purple region = area of a circle = pi * r^2;

  green region = base * height;

what we know:

the base, 28m;

what the sum of the two diameters is, 28;

the length of a single diameter, 14;

what we can assume:

the two semi-circles are equal, as otherwise i cannot see a way to answer this;

the radius of the two semi-circles, 7m as the two diameters = 28, & d/2 = r

what does that mean:

the height is 17m

green region area = 476 m^2

purple region area is = 153.96 m^2

8 0
3 years ago
Jane and Sammie are making decisions about their bank accounts. Jane wants to deposit
prisoha [69]

Answer:

<u><em>Sammie</em></u>

Step-by-step explanation:

<u><em>Jane</em></u>

First, convert R as a percent to r as a decimal

r = R/100

r = 5/100

r = 0.05 rate per year,

Then solve the equation for A

A = P(1 + r/n)nt

A = 550.00(1 + 0.05/4)(4)(10)

A = 550.00(1 + 0.0125)(40)

A = $903.99

<u><em>Sammie</em></u>

First, convert R as a percent to r as a decimal

r = R/100

r = 7/100

r = 0.07 rate per year,

Then solve the equation for A

A = P(1 + r/n)nt

A = 550.00(1 + 0.07/12)(12)(10)

A = 550.00(1 + 0.005833333)(120)

A = $1,105.31

<u><em>
</em></u>

3 0
3 years ago
Point A(4,2) is translated according to the rule (x,y)-&gt; (x+1, y-5) and then reflected across the Y-axis.
marishachu [46]
Given:

Point A with coordinates: (4, 2) is in the first quadrant.

The point is translated to the rule (x, y) --> (x+1, y-5)

Now, point A becomes (4+1, 2-5) = (5, -3) which is now in quadrant 4. 

The point is reflected across the y-axis. Now, it is in the third quadrant. 
8 0
3 years ago
Read 2 more answers
If ∠C and ∠D are vertical angles and m ∠ C = x + 5 and m ∠ D = –2x + 80, what is m ∠ C?
amm1812

Answer:

m∠C=30°

Step-by-step explanation:

we know that

<u>Vertical Angles</u> are the angles opposite each other when two lines cross. They are always equal

so

m∠C=m∠D

substitute the given values

(x+5)\°=(-2x+80)\°

Solve for x

x+2x=80-5\\3x=75\\x=25

<em>Find the measure of angle C</em>

m∠C=(x+5)°

substitute the value of x

m∠C=(25+5)=30°

3 0
3 years ago
A recipe for a soup.calls for 1/3 cup of chopped onion and 2/6 cup of chopped
Anestetic [448]

Answer: 2/3

Step-by-step explanation:

5 0
3 years ago
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