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Mariulka [41]
3 years ago
9

you are baking cookies for your class. there are 23 students in your class and you have already baked 12 cookies. Write and solv

e an equation to find the additional number x cookies you need to bake in order to have 2 cookies for each student
Mathematics
1 answer:
8090 [49]3 years ago
4 0
12 + 2x=23 is my guess
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Find the standard form of the equation of the circle with endpoints of a diameter at the points (3,8) and (-7,2)
poizon [28]

(x+2)^{2}+(y-5)^{2}= 34

The equation of a circle in standard form is

(x-a)^{2}+(y-b)^{2}=r^{2}

where (a , b) are the coordinates of the centre and r is the radius

The centre is at the midpoint of the endpoints and the radius is the distance from the centre to either of the 2 endpoints

Using the midpoint formula

midpoint = [\frac{1}{2}(xx_{1}+x_{2}, \frac{1}{2}(y_{1}+y_{2}

where (x_{1},y_{1}=(3,8) and (x_{2},y_{2}=(-7,2)

centre = (\frac{1}{2}(3-7),\frac{1}{2}(8+2)) = (-2,5)

Calculate r using the distance formula

r = √(x_{2}-x_{1})²+(y_{2}-y_{1})²)

= √((3+2)²+(8-5)²) = √(25+9) = √34 ⇒ r² =(√34)² = 34

equation of circle is : (x+2)²+(y-5)² = 34


8 0
3 years ago
If the nth term of a sequence is 18-8n what is the 8th term
ycow [4]

Answer:

a_{n} =18-8n\\a_{8} =18-8(8)=-46

5 0
2 years ago
Read 2 more answers
ILL MARK BRAINLY!!
Finger [1]

Answer:

D

Step-by-step explanation:

When you put something in parenthesis by a number, your multiplying each individual number by the number outside of parenthesis. Therefore, 5(2) = 10 and 5(7) = 35 and that equals 45, and 5(2+7) you distribute the 5 to both numbers and get 10+35 which equals 45 aswell.

7 0
3 years ago
Read 2 more answers
What is the written form of 35 1/5
FromTheMoon [43]
35.20 is the decimal version
8 0
3 years ago
Help me pls i need help pls papi
Dmitry_Shevchenko [17]

Answer:3150

Step-by-step explanation:

70% of 10,000 is 7000. 45% of 7000 is 3150

4 0
2 years ago
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