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bezimeni [28]
3 years ago
13

Which equation represents the following word problem? Grace is making a cake. The recipe calls for 21/2 cups of flour. If she ha

s already added 3/4 of a cup into the bowl, how much more flour will she need to add? Let x be the number of cups she needs to add.
A) x+3/4 = 22/2
B) x-3/4=27/2
C) 3/4x = 21/2
D) X/13/4)​
Mathematics
1 answer:
Fudgin [204]3 years ago
3 0

Answer: c

Step-by-step explanation:

3/4x = 21/2

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A student has learned that test scores in math are determined by this quadratic function: s(t) = -(t-6)^2 + 99
ser-zykov [4K]

Answer:

a. 6,  b. 99, c. 63

Step-by-step explanation:

A)  The function s(t) is in the vertex form. The standard vertex form is a(x-h)+k where the vertex is (h,k). The vertex is the highest (or lowest in some cases) point of the graph, so if we use s(t) to get the vertex we get that h=6 and k=99. This means that for a student to get a perfect score they need to study 6 hours

B) We can just take the k value from the first question because that's the highest value for s(t), so the highest score will be 99

C) For this one just plug in 0 for time, so -(0-6)^2+99. This equals -(-6)^2+99, which equals 99-36 =63

4 0
3 years ago
PLEASE HELP!!!!!!!!!!!!!
Artemon [7]

Answer: 166.67π

Step-by-step explanation:

150/360 x π x 20²

Because the answer is in pi, we times 150/360 by 20² and pop the pi sign next to it

150/360 x 20² = 166.66667

and when we put the pi sign it is

166.67 π

8 0
2 years ago
What is the value of this expression?<br> 49 - (11 – 4)
Illusion [34]

Answer:

42

Step-by-step explanation:

11 - 4 = 7

49 - 7 = 42

3 0
3 years ago
Read 2 more answers
Ashley is making $500 a week at her job. she receives a 20% pay rise. a year later she takes a 5% pay cut. how much does she mak
aleksandrvk [35]

Answer:

Ashley is making $570 a week

Step-by-step explanation:

500 + 20%= 600

600-5% =570

3 0
3 years ago
What is the value of the expression i To the power of 1 times I to the power of 2 times I to the power of 3 times I to the power
nalin [4]

Answer:

-1

Step-by-step explanation:

i^1\cdot i^2\cdot i^3\cdot i^4= \\\\i^{1+2+3+4}= \\\\i^{10}= \\\\-1

Hope this helps!

6 0
3 years ago
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