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AnnZ [28]
2 years ago
10

PLEASE ANSWER AND HELP

Mathematics
1 answer:
ra1l [238]2 years ago
7 0
She must save $91.80.
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What is the area of rectangle ABCD?
xz_007 [3.2K]

Answer:

240

Step-by-step explanation:

The length is 20 and the width is 12 so you just multiply 20 and 12 together which is 240

5 0
3 years ago
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Explain how you can find 3x 584 using expanded form
gayaneshka [121]
500x3=1500
80x3=240
4x3=12

1500+240+12=1,752
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3 years ago
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PLEASE HELP ME! THANK YOU! :)
QveST [7]
All we need to do is to divide August and September rainfall measurements into two equal halves and then substract 0.6 from one of them and add 0.6 to the other one.

6.2 ÷ 2 = 3.1
3.1 - 0.6 = 2.5
3.1 + 0.6 = 3.7

It's said that in August there was 0.6 inch more rainfall, so the bigger value (3.7 inches) is for August and the smaller value (2.5 inches) is for September.
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3 years ago
Hi, please help me with this math problem, I need to submit rly quick, thx.
Artemon [7]

Answer:

I think its B.

Step-by-step explanation:

6 0
3 years ago
For what value of x will the function f(x) = -3(x - 10)(x - 4) have a maximum value? Find the maximum value.
gayaneshka [121]

Hello!

To find the maximum value of the function f(x) = -3(x - 10)(x - 4), the easiest way is to find the vertex using the formula: x = -b/2a.

Firstly, we need to simplify f(x).

f(x) = -3(x - 10)(x - 4)

f(x) = -3(x² - 14x + 40)

f(x) = -3x² + 42x + -120

Since the equation f(x) is now simplified to standard form, we can find the vertex.

a = -3, b = 42, and c = -120

x = -(42)/2(-3) = -42/-6 = 7

Then, we substitute 7 into the the function f(x) = -3(x - 10)(x - 4), or

f(x) = -3x² + 42x + -120, to find the y-value of the vertex.

f(x) = -3(7 - 10)(7 - 4)

f(x) = -3(-3)(4)

f(x) = 27

The vertex of f(x) is (7, 27).

Therefore, the maximum x-value for the function f(x) is 7.

4 0
2 years ago
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