3 years ago

Can someone pls help me with this

Mathematics

1 answer:

Nuetrik [128]3 years ago

4 0

Answer:

12/4=3 12*.25=3

Step-by-step explanation:

You might be interested in

2x + y = -2

cupoosta [38]

Answer is A
if x+y=5
y= -x+5
2x + (-x+5) =-2
2x -x +5 = -2
x+5 = -2
x=-7

5 0

2 years ago

Read 2 more answers

1.12cm=______mm 2.124mm=_______cm 3.2cm=________mm 4.7mm=_______cm

sashaice [31]

Answer:

1. 11.2 mm

2. 0.2124cm

3. 32mm

4. 4.7cm

8 0

3 years ago

Please help i dont understand what its asking

Arisa [49]

Multiply both the numerator and denominator by $2+\sqrt3$ , which is called the "conjugate" of $2-\sqrt3$ :

$\dfrac{5+\sqrt3}{2-\sqrt3}\cdot\dfrac{2+\sqrt3}{2+\sqrt3}$

Why do we pick this number? Recall the difference of squares factorization:

$a^2-b^2=(a-b)(a+b)$

Now replace $a=2$ and $b=\sqrt3$ . Then

$(2-\sqrt3)(2+\sqrt3)=2^2-(\sqrt3)^2=4-3=1$

So in your fraction, you end up with

$\dfrac{5+\sqrt3}{2-\sqrt3}=\dfrac{(5+\sqrt3)(2+\sqrt3)}1=(5+\sqrt3)(2+\sqrt3)$

Finally, just expand the product.

$(5+\sqrt3)(2+\sqrt3)=10+7\sqrt3+(\sqrt3)^2=\boxed{13+7\sqrt3}$

7 0

2 years ago

An investor invested a total of $3,500 in two mutual funds. One fund earned a 8% profit while the other earned a 5% profit. I

Triss [41]

Answer:

i found this so srry if its wrong i saw no one answering this so i wanna help

Step-by-step explanation:

so, x*(7/100) + (3500 - x)*(4/100) = 197

=> 3x + 14000 = 19700

=> 3x = 19700 - 14000

=> x = 5700/3 = 1900

7 0

2 years ago

If f(x) = 4x – 5 and g(x) = 3 – 2x, find f(x) + g(x). A. 2x – 2 B. 6x – 2 C. 2x – 8 D. 6x – 8

Lemur [1.5K]

Answer:

Step-by-step explanation:

4 0

2 years ago