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2 years ago

What’s a number that multiplies to four but adds to three

Mathematics

2 answers:

d1i1m1o1n [39]2 years ago

3 0

Answer:

The answer is clearly 4 and 1. If we change the sign on 1 (making it -1), then you have the answer to your original question. 4 and -1 multiply to -4 and add up to 3.

ahrayia [7]2 years ago

3 0

Answer:

-1 and 4. when you add it it gives you 3

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It is 7 times as much to go to an amusement park as it is to go to the movies if it is $9 to go to the movies how much is it to

julsineya [31]

It will be 63 dollars to go to a amusement park

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3 years ago

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What is the value of i20+12

Sladkaya [172]

Answer:

Step-by-step explanation:

132

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3 years ago

34 POINTS HELP CAN YOU HELP ME SOVLE AND SHOW HOW YOU DID IT?

Troyanec [42]

1. Let's solve your equation step-by-step.
4x+5=6x
Step 1: Subtract 6x from both sides.
4x+5−6x=6x−6x
−2x+5=0
Step 2: Subtract 5 from both sides.
−2x+5−5=0−5
−2x=−5
Step 3: Divide both sides by -2.
−2x/−2 =−5/−2

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7 0

3 years ago

Ben earns $9 per hour and $6 for each delivery he makes. He wants to make $155 in an 8-hour workday. What is the least number of

ioda

Find how much he will earn
we know he will earn 8 hours sofirst find how many he earns
9 per hour
8 hou
9*8=72
72+6*numberofdeliveries=155
minus 72
6*numberofdeliviers=83
divide by 6
number of delevieries=13.8
he can't make 13.8, round up to get 14

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3 years ago

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Cos^2x+cos^2(120°+x)+cos^2(120°-x) i need this asap. pls help me

o-na [289]

Answer:

$\frac{3}{2}$

Step-by-step explanation:

Using the addition formulae for cosine

cos(x ± y) = cosxcosy ∓ sinxsiny

---------------------------------------------------------------

cos(120 + x) = cos120cosx - sin120sinx

= - cos60cosx - sin60sinx

= - $\frac{1}{2}$ cosx - $\frac{\sqrt{3} }{2}$ sinx

squaring to obtain cos² (120 + x)

= $\frac{1}{4}$ cos²x + $\frac{\sqrt{3} }{2}$ sinxcosx + $\frac{3}{4}$ sin²x

--------------------------------------------------------------------

cos(120 - x) = cos120cosx + sin120sinx

= -cos60cosx + sin60sinx

= - $\frac{1}{2}$ cosx + $\frac{\sqrt{3} }{2}$ sinx

squaring to obtain cos²(120 - x)

= $\frac{1}{4}$ cos²x - $\frac{\sqrt{3} }{2}$ sinxcosx + $\frac{3}{4}$ sin²x

--------------------------------------------------------------------------

Putting it all together

cos²x + $\frac{1}{4}$ cos²x + $\frac{\sqrt{3} }{2}$ sinxcosx + $\frac{3}{4}$ sin²x + $\frac{1}{4}$ cos²x - $\frac{\sqrt{3} }{2}$ sinxcosx + $\frac{3}{4}$ sin²x

= cos²x + $\frac{1}{2}$ cos²x + $\frac{3}{2}$ sin²x

= $\frac{3}{2}$ cos²x + $\frac{3}{2}$ sin²x

= $\frac{3}{2}$ (cos²x + sin²x) = $\frac{3}{2}$

5 0

3 years ago

What’s a number that multiplies to four but adds to three￼

What’s a number that multiplies to four but adds to three