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3 years ago

What is 3 1/2 plzzz help me

Mathematics

1 answer:

inessss [21]3 years ago

4 0

Answer:

7/2 or 3.5 whichever you need

Step-by-step explanation:

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Find the product: -4/7 (- 13/2)

emmasim [6.3K]

Answer:

the answer is 3.71

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Select the two values of x that are roots of this equation. X2 + 2x - 5 = 0

LenaWriter [7]

Answer:

$x=-1+\sqrt{6 }$

$x=-1-\sqrt{6 }$

Step-by-step explanation:

$x=\frac{-b±\sqrt{b^{2}-4ac } }{2a}$

Ignore the A before the ±. It wouldn't let me type it correctly.

x² + 2x - 5 = 0

a = 1

b = 2

c = - 5

$x=\frac{-2±\sqrt{2^{2}-4((1)(-5)) } }{2(1)}$

$x=\frac{-2±\sqrt{4-4((1)(-5)) } }{2(1)}$

$x=\frac{-2±\sqrt{4+20 } }{2(1)}$

$x=\frac{-2±\sqrt{24 } }{2}$

$x=\frac{-2±\sqrt{(2)(12) } }{2}$

$x=\frac{-2±\sqrt{(2)(2)(6) } }{2}$

$x=\frac{-2±\sqrt{(2)(2)(2)(3) } }{2}$

$x=\frac{-2±(\sqrt{2} )(\sqrt{2})(\sqrt{(2)(3) )} }{2}$

$x=\frac{-2±2\sqrt{6 } }{2}$

Two separate equations

$x=\frac{-2+2\sqrt{6 } }{2}$

$x=\frac{-2-2\sqrt{6 } }{2}$

$x=-1+\sqrt{6 }$

$x=-1-\sqrt{6 }$

7 0

3 years ago

The lesser of two consecutive even integers is 10 more than one-half the greater. Find the integers.

LiRa [457]

$n=\dfrac{1}{2}(n+1)+10\\
2n=n+1+20\\
n=21\\
n+1=22$

21 and 22

7 0

3 years ago

What is the value of the expression -225 divided by -15? –25 –15 15 25

choli [55]

-225/-15 will give us a positive answer since we are dividing by two negative values, so we can rule out answers 1 and 2 first off.

then we solve to find the answer -225/1*-1/15 = 15

hope this helps! thanks!

6 0

3 years ago

Read 2 more answers

MakcuM [25]

Answer: C) 4.20

Explanation:

Multiply each value with its corresponding frequency:

1*450 = 450
10*35 = 350
50*10 = 500
100*4 = 400
400*1 = 400

Add up the products

450+350+500+400+400 = 2100

Then divide this over the total frequency (450+35+10+4+1 = 500)

So we get 2100/500 = 4.20 as the expected value.

4 0

2 years ago