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Stells [14]
3 years ago
15

She learns that the fabric she wants to use is $7.99 per yard. Find the total cost of 4 yards of fabric. Justify your answer by

using the distributive property.
Mathematics
1 answer:
sattari [20]3 years ago
8 0

Answer:

$31.96

Step-by-step explanation: multiply without the decimal, the put it in once multiplied

799 * 4 = 3196

then put in the decimal... 31.96

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Three consecutive odd integers are such that the square of the third integer is 1515 greater than greater than the sum of the sq
Ksju [112]
Let
x-----------> first <span>odd integer
x+2--------> second consecutive odd integer
x+4-------> third consecutive odd integer

we know that
(x+4)</span>²=15+x²+(x+2)²-------> x²+8x+16=15+x²+x²+4x+4
x²+8x+16=19+2x²+4x-------> x²-4x+3
x²-4x+3=0

using a graph tool----------> to calculate the quadratic equation
see the attached figure
the solution is
x=1
x=3

the answer is
the first odd integer x is 1
the  second consecutive odd integer x+2 is 3
the third consecutive odd integer x+4 is 5

7 0
3 years ago
Please help with this question.
Rzqust [24]
(cos Ф -cos Ф)² + (cos Ф + cos Ф)²

Firstly: (cos Ф -cos Ф)² = 0² = 0

Secondly :(cos Ф + cos Ф)² = (2cos Ф)². = 4. (cos Ф)² = 4cos² Ф

Mind you when you raise a cosine (or sin or tan...) to the n power, the n power should affect the cosine only and NOT the angle Ф

4 0
3 years ago
63 is 90% of what number? In number line
Reika [66]
63/x=90/100
5670=100x
56.7
7 0
3 years ago
C. A 40-foot ladder reaches 38 feet up the side of a house. How far from the base of the
Svet_ta [14]

Answer: 12.48

Step-by-step explanation:

38x38+bxb=40x40

1444+b=1600

1600-1444=156

\sqrt156=12.48

4 0
2 years ago
Five Stars and Brainliest To Correct Answer
Westkost [7]
The correct answer is x = 1/28y^2
5 0
3 years ago
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