Question

Laura is baking a cake. The recipe says that she has to mix 64 grams of chocolate powder to the flour. Laura knows that 1 cup of that particular chocolate powder has a mass of 128 grams. She added two over three of a cup of chocolate powder to the flour. Should Laura add more chocolate powder to make the exact recipe, or did she go over and by what amount?

Answer 1

So what do you know so far?

Answer 2

I honestly know nothing.

Answer 3

@shark35 can you help?

Answer 4

1/6 is the answer

Answer 5

does she need to add or did she go over by 1/6

Answer 6

She needed to add 64g which is half a cup
She added 2/3

She went over by 2/3 - 1/2 = 1/6

Answer 7

yes @autumnajj

Answer 8

thanks @flashp

Answer 9

The length of the base of a triangle is 6.6 cm and its height is 4.9 cm. If the area of the triangle is half of the product of its base length and height, the area of the triangle is __________ cm2.

(Round your answer to the appropriate significant digits)

Answer 10

She needed to add 64g which is half a cup
She added 2/3

She went over by 2/3 - 1/2 = 1/6

Answer 11

for this one

The length of the base of a triangle is 6.6 cm and its height is 4.9 cm. If the area of the triangle is half of the product of its base length and height, the area of the triangle is __________ cm2.

(Round your answer to the appropriate significant digits)

Answer 12

1/2 * 6.6 * 4.9

Answer 13

area for a triangle is 1/2 base * height given base is 6.6 and 4.9 is height

Answer 14

So how do i put that in numerically? without thestars

Answer 15

16.7 cm^2

Answer 16

Ohhhhh
so wait, how did you find that?

Answer 17

Paul plans to put concrete on a rectangular portion of his driveway. The portion is 12 feet long and 6 inches high. The price of concrete is $98 per cubic yard. The total cost of the concrete Paul needs is $108.89. Which of the following is closest to the width of the portion of the driveway on which Paul plans to put concrete?

[1 foot = 12inches; 1 yard = 3 feet]

Answer 18

The price given is per cubic yard, and a cubic yard is defined as the volume of a cube with sides of 1 yard. So, let us convert everything to yards first.

12 feet= 4 yards
6 inches=0.166667 yards
Rectangular portion area=4*0.166667*X yards (X is the unknown width)
Paul needs a total cost of 108.89 and a cubic yard costs 98. So, how many cubic yards can he cover with that? =108.89/98= 1.1111 cubic yards

Hence, 4*0.166667*X=1.1111
X=1.6666 yards which is equal to approximately 5 feet.

Answer 19

yeah i couldn't figure that out

Answer 20

Jake cut out 3 small circles and 5 big circles from a piece of cardboard. The radius of each small circle was x inches and the radius of each big circle was y inches. The expression below shows the total number of square inches of cardboard that Jake used for cutting out the circles:

3πx2 + 5πy2

What does the term 5πy2 in the expression represent?

Answer 21

small circle was x
big circle was y

so what those 5pi y^2 represents ( the one with the y )

Answer 22

5 big circles that is the 5 from 5 pi y^2
area of the circle = pi.y^2

Answer 23

so its the total number of all the circles?

Answer 24

or total area?

Answer 25

ok

Answer 26

just to let you know that for the number two, its ^2 not 2

Answer 27

do you have your answer

Answer 28

no. is it the total area of all the circles or is it like the total number of circles??

Answer 29

im confused

Answer 30

im pretty sure its the total area of all the circles

Answer 31

ooooh okay

Answer 32

Betty had $40 in her pocket. She bought 12 identical bags of popcorn. Betty was left with $10 after buying the popcorn. What was the price, in dollars, of each bag of popcorn?

Answer 33

40 -10 = $30.

30/12 = $ 2.50 per bag of popcorn ANSWER

Answer 34

Evaluate 32 + (5 - 2) • 4 - 6 over 3.

Answer 35

42
32 + (5 - 2) · 4 - 6 over 3 = 32 + 3x4 - 6/3 =32 + 12 - 2 = 42

Answer 36

42 isn't one of the options

Answer 37

19, 16, 46, or 24

Answer 38

wat are the options

Answer 39

ok wait

Answer 40

okay