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Fofino [41]
2 years ago
15

PLEASE HELP ME WITH THIS IT IS DUE RIGHT NOW

Mathematics
1 answer:
Ugo [173]2 years ago
4 0

Step-by-step explanation:

1. Perimeter = 2 ( 5+4) = <u>18 cm</u>

Area = 5 × 4 = <u>20 cm^2</u>

2. Perimeter = 2 (5+5) = <u>20 cm</u>

Area = 5 × 5 = <u>25 cm^2</u>

3. Cups of seed needed per sq. meter = Area of the rectangle backyard

= 6 × 7

= <u>42 </u><u>cups</u><u> </u><u>of</u><u> </u><u>seed</u>

4. Feet of fence needed = Perimeter of the Square garden

= 2(8+8)

<u>= 32 feet</u>

5. Perimeter of rectangular quilt = 2 (4+6) feet

= <u>20 feet</u>

6. Area of the room = 9 feet × 8 feet

= <u>72 feet^2</u>

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4.9x 10^2 as a decimal number????
harkovskaia [24]

Answer:

490.0...

Step-by-step explanation:

4.9 x 10^2

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the easiest way to do this is to move the decimal 2 places to the right, as

10 x 10 = 100

4.9 x 100 = 490.0...

7 0
3 years ago
What is interest earned on 3500 invested at 6% compounded quarterly or 12 years
enyata [817]
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so, the interest earned then will be  A - 3500.
6 0
3 years ago
HELP<br> Write an equation of a line passing through (-8, 6) and parallel to the line y=-4x - 1
MArishka [77]

The line is parallel so it has the same slope as the other line, -4.

Substitute the x and y variables with the given points and find the y-intercept.

(-8, 6)

y = -4x + b

6 = -4(8) + b

6 = -32 + b

6 + 32 = b

38 = b

So the equation is:

y = -4 + 38

4 0
3 years ago
To earn an A in an algebra course, a student must have a test average of at least 90. Mary has grades of 95, 82, 88 on her first
Fofino [41]

Answer: Mary need to make at-least 95 on her fourth test to earn an A in her algebra course.

Step-by-step explanation:

Let x be the grades scored by Mary in the fourth algebra test.

Mary has grades of 95, 82, 88 on her first three algebra tests.

Then, the combined scores in four test will become = 95+82+88+x =  265+x

Average score = (Sum of all scores) ÷ (Number of tests)

=\dfrac{265+x}{4}

As per given ,

To earn an A in an algebra course, a student must have a test average of at least 90.

i.e. Average score ≥ 90

\Rightarrow\ \dfrac{265+x}{4}\geq90\\\\\Rightarrow\ 265+x\geq 90\times4=360\\\\\Rightarrow\ x\geq360-265 =95\\\\\Rightarrow\ x\geq90

Hence, Mary need to make at-least 95 on her fourth test to earn an A in her algebra course.

5 0
3 years ago
Write an explicit formula for a^n the nth term of the sequence 1,3,9....
frutty [35]

Answer:

  a_n = 3^(n -1)

Step-by-step explanation:

The n-th term of a geometric sequence with first term a1 and common ratio r is given by ...

  a_n = a1·r^(n-1)

Your sequence has first term 1 and ratio r=3, so the sequence is given by ...

  a_n = 3^(n -1)

_____

<em>Comment on sequences and series</em>

The sequences we commonly study are "arithmetic" and "geometric." Each of these has an explicit formula for the n-th term, based on the first term and the common difference or ratio. Similarly, each series (sum of terms of a sequence) also has a formula. That's 4 formulas to keep track of; not difficult. One of them, the formula for the n-th term of a geometric sequence, is shown above.

7 0
3 years ago
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