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Sever21 [200]
3 years ago
8

URGENT: Can someone help me solve these problems?

Mathematics
1 answer:
katrin2010 [14]3 years ago
3 0

Answer:

12

Step-by-step explanation:

21=31

31=7+2-3+0=12

This is correct because linear equations mean add subtract divide and multiply instead of finding roots and squares

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The width of a rectangle is 30% of its length what is the area of the rectangle. when the length is 40ft.
zaharov [31]

Answer:

480ft squared

Step-by-step explanation:

length= 40*0.30= 12

area= length×width

area=40×12

40×12= 480

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What is the decimal expansion for 1/9
nika2105 [10]
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Original Price:<br> $25.00<br> Take 10% off,<br> and then take<br> $1.00 off that<br> amount:
JulsSmile [24]

Answer:

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Step-by-step explanation:

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3 years ago
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konstantin123 [22]
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2 years ago
How do you determine what your grade average is based on the following grades?:
fiasKO [112]

Answer:

Test's average-95

Homework's average-96.67

Step-by-step explanation:

Average is mathematically defined as the sum of the values divided by the total number of values and is expressed as:

\bar X=\frac{1}{n}\sum{x_i}, n=number \ of \ values.

The Tests' average is calculated as:

\bar X_t=\frac{1}{n}\sum{x_i}\\\\=\frac{1}{3}(98+92+95)\\\\=\frac{1}{3}\times 285\\\\=95

Hence, the Tests' average is 95

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\bar X_h=\frac{1}{n}\sum{x_i}\\\\=\frac{1}{3}(93+97+100)\\\\=\frac{1}{3}\times 290\\\\=96.67

Hence, the Homework's average is 96.67

5 0
3 years ago
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