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2 years ago

Christine bakes 4 dozen cookies in an hour. How many dozen cookies does she bake in 3.5 hours?

Mathematics

2 answers:

Paladinen [302]2 years ago

7 0

Answer:

14 dozen

Step-by-step explanation:

multiply 4x3.5=14

GarryVolchara [31]2 years ago

5 0

Answer: 14 dozen

Step-by-step explanation: 4 dozen cookies = 1 hr

you can multiply 4 by 3.5 and get the answer.

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Write a 3-digit number that is divisible by 9.

Digiron [165]

Answer:900

Step-by-step explanation:

900/9=100

100x9=900

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2 years ago

For each table, determine whether it shows that x and y are proportional.

myrzilka [38]

9514 1404 393

Answer:

1. proportional, 6

2. not proportional

Step-by-step explanation:

Table 1

Each y-value is 6 times the corresponding x-value, so the variables are proportional, and y = 6 times x.

Table 2

The ratios of y to x are 2, 4, 8, so are not the same. The values are not proportional.

8 0

2 years ago

A 17-foot ladder is leaning against a building. The base of the ladder is 8 feet

ss7ja [257]

Answer:

Pythagorean theorem:

x^2 = 17^2 - 8^2

x^2 = 225

x = sqrt(225) = 15

The distance is 15 ft

3 0

2 years ago

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Solve each Multi-Step equation. -6(-6n + 2)=-228

attashe74 [19]

Answer:gnhbk j bmnj

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Find the equation of the parabola that passes through

valentinak56 [21]

so we have the points of (0,-7),(7,-14),(-3,-19), let's plug those in the y = ax² + bx + c form, since we have three points, we'll plug each one once, thus a system of three variables, and then we'll solve it by substitution.

$\bf \begin{array}{cccllll} \stackrel{\textit{point (0,-7)}}{-7=a(0)^2+b(0)+c}& \stackrel{point (7,-14)}{-14=a(7)^2+b(7)+c}& \stackrel{point (-3,-19)}{-19=a(-3)^2+b(-3)+c}\\\\ -7=c&-14=49a+7b+c&-19=9a-3b+c \end{array}$

well, from the 1st equation, we know what "c" is already, so let's just plug that in the 2nd equation and solve for "b".

$\bf -14=49a+7b-7\implies -7=49a+7b\implies -7-49a=7b \\\\\\ \cfrac{-7-49a}{7}=b\implies \cfrac{-7}{7}-\cfrac{49a}{7}=b\implies -1-7a=b$

well, now let's plug that "b" into our 3rd equation and solve for "a".

$\bf -19=9a-3b-7\implies -12=9a-3b\implies -12=9a-3(-1-7a) \\\\\\ -12=9a+3+21a\implies -15=9a+21a\implies -15=30a \\\\\\ -\cfrac{15}{30}=a\implies \blacktriangleright -\cfrac{1}{2}=a \blacktriangleleft \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{and since we know that}}{-1-7a=b}\implies -1-7\left( -\cfrac{1}{2} \right)=b\implies -1+\cfrac{7}{2}=b\implies \blacktriangleright \cfrac{5}{2}=b \blacktriangleleft \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill y=-\cfrac{1}{2}x^2+\cfrac{5}{2}x-7~\hfill$

3 0

3 years ago