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2 years ago

6

Vicky had 12 cookies left over after the bake sale. She had sold 75 cookies in the morning and 40 cookies in the afternoon. How

many cookies did she have at the beginning of the bake sale ?

2 answers:

Alex_Xolod [135]2 years ago

8 0

115 i am not sure but maybe

mrs_skeptik [129]2 years ago

7 0

127 cookies is the correct answer

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Pls help me pls and thank you

Alika [10]

Answer:

10

Step-by-step explanation:

2/3 of 15 is 10

3 0

2 years ago

3. Use computer drawing software to construct a quadrilateral with

sweet [91]

9514 1404 393

Answer:

parallelogram

Step-by-step explanation:

A shape with two pairs of parallel sides is a parallelogram. If an angle is something other than 90°, then the figure is not a rectangle.

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2 years ago

Find the equation of the sphere passing through P(negative 4 comma 7 comma 6 )and Q(8 comma negative 3 comma 5 )with its center

Juli2301 [7.4K]

Answer: The equation of the sphere is:

(x-2)^2 + (y-2)^2 + (z-5/2)^2 = sqrt(245)/2

Step-by-step explanation:

The centre of the sphere is the midpoint of the diameter, which is

1/2

[(-4,7,6) + (8,-3,5)] =(2,2,5/2)

The length of the diameter is

=sqrt |(8,-3,5) - (-4,7,6)|^2

=sqrt (12^2 + (-10)^2 + (-1)^2)

=sqrt (144+100+1)

=sqrt(245)

so the radius of

the sphere is:

1/2(sqrt(245)) = sqrt(245)/2.

The equation of the sphere is:

(x-2)^2 + (y-2)^2 + (z-5/2)^2 = sqrt(245)/2

4 0

2 years ago

Solve the system of equations by substitution. What is the solution for x? 2x + y = 1 4x + 2y = −1

lapo4ka [179]

Solve your system of equations.

2x+y=1;4x+2y=−1

Solve 2x+y=1 for y:

2x+y+−2x=1+−2x(Add -2x to both sides)

y=−2x+1

Substitute (−2x+1) for y in 4x+2y=−1:

4x+2y=−1

4x+2(−2x+1)=−1

2=−1(Simplify both sides of the equation)

2+−2=−1+−2(Add -2 to both sides)

0=−3

Answer: No solution. C)

8 0

2 years ago

Read 2 more answers

Xavier writes a ratio out of 18 as the decimal 0.22222222.

Digiron [165]

Answer: 4/18

Step-by-step explanation:

8 0

1 year ago