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yan [13]
3 years ago
7

What two numbers multiply to 4 and add up to -21?

Mathematics
2 answers:
Mariana [72]3 years ago
7 0
5.25 might be the answer if you multiply
earnstyle [38]3 years ago
6 0

Answer:

-5.25? Maybe

-5.25 x 4 is -21

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2 years ago
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A2 = -8 and a5 = -512<br> Find a10
yawa3891 [41]

Answer:

The value of a₁₀ is -1352

Step-by-step explanation:

a₂ = -8

a₅ = -512

Now,

a₂ = -8 can be written as

a + d = -8 ...(1) and

a₅ = -512 can be written as

a + 4d = -512 ...(2)

Now, from equation (2) we get,

a + 4d = - 512

a + d + 3d = - 512

(-8) + 3d = - 512 (.°. <u>a + d = </u><u>-8</u><u>)</u>

3d = - 512 + 8

3d = - 504

d = - 504 ÷ 3

d = - 168

Now, for the value of a put the value of d = -168 in equation (1)

a + d = -8

a + (-168) = -8

a - 168 = -8

a = 168 - 8

a = 160

Now, For a₁₀

a₁₀ = a + 9d

a₁₀ = 160 + 9(-168)

a₁₀ = 160 - 1512

a₁₀ = -1352

Thus, The value of a₁₀ is -1352

<u>-TheUnknownScientist</u>

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3 years ago
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for \: a \: rational \: number \:  \frac{a}{b}   \: such \: that \: 0  > a \:  \:  \:  \:  \:  \: 0  <  b \\ its \: multiplicative \: inverse \: is \:  -  \frac{b}{a}

6 0
2 years ago
What is the surface area of a sphere with a radius of 11cm? Use 3.14 for pi
vagabundo [1.1K]
I hope this helps you



Area=4.pi.r^2


Area =4.3,14.11^2


Area =1519
6 0
3 years ago
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