4 years ago

Give answer for 5 please

Mathematics

1 answer:

scZoUnD [109]4 years ago

5 0

The answer is D because to get from 2 to 6 you multiply by 3. To get to 12 from 4 you multiply by 6.

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2r2 + 3s3 − r2 + 4t2 − r2 if r = −2, s = −3, and t = 5.

Elza [17]

First, simplify the expression $2r^2 + 3s^3 - r^2 + 4t^2 - r^2.$ Here you have three terms with $r^2,$ group them in the following way:

$2r^2 + 3s^3 - r^2 + 4t^2 - r^2=2r^2-r^2-r^2+3s^3+4t^2=(2r^2-r^2-r^2)+3s^3+4t^2=$

$=r^2(2-1-1)+3s^3+4t^2=3s^3+4t^2.$

Then substitute s=-3 and t=5:

$3s^3+4t^2=3\cdot (-3)^3+4\cdot 5^2=3\cdot (-27)+4\cdot 25=-81+100=19.$

Answer: 19.

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3 years ago

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A line has a slope of 3/5. a line parallel to that line would have a slope of

nekit [7.7K]

-3/5 they have opposite slopes so they would never touch but are parallel.

4 0

3 years ago

Please help quickly, if someone answers quickly I'll give them Brainly.

denis-greek [22]

1. A

I hope this helped! This is because the division of numbers and factors are equal to this.

6 0

3 years ago

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Please show how you solved the problem. 4a - 14 = 7a - 8

lianna [129]

4a - 14 = 7a - 8

4a - 7a = 14 -8

-3a = 6

a = 2

ok done. Thank to me :>

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3 years ago

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Krystal and Danielle each improved their yards by planting daylilies and ivy. They bought their supplies from the same store. Kr

Eddi Din [679]

Answer:

$9 and $6

Step-by-step explanation:

Let the cost of daylilies = d and ivy = i, then we have below equations:

d + 12i = 114
10d + 10i = 150

Simplify the second equation:

d + i = 15

Subtract the second equation from the first:

d - d + 12i - i = 114 - 15
11i = 99
i = 9, ivy costs $9

Now find d:

d = 15 - 9 = 6, daylilies cost $6

6 0

3 years ago