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3 years ago

Simplify 7.5/4 - 4.9+2.1/25

Mathematics

1 answer:

andriy [413]3 years ago

6 0

Answer:

-2.941

Step-by-step explanation:

7.5/4=1.875

2.1/25=0.084

1.875-4.9+0.084

-3.025+0.084

-2.941

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What is (3i-2/3)-(6i-5) in standard form

k0ka [10]

Answer:

13/3 -3i

Step-by-step explanation:

(3i-2/3)-(6i-5)

Distribute the minus sign

(3i-2/3)-6i+5

Combine like term

-2/3 +5 +3i - 6i

-2/3 +15/3 -3i

13/3 -3i

This is standard form

5 0

2 years ago

Select the statement that describes this expression: 5 x 3 − (2 x 4) + 5. (2 points)

Nana76 [90]

Answer:

I believe the answer is either going to be B or C

Step-by-step explanation:

7 0

2 years ago

Step 1: 5 = negative 2 (negative StartFraction 3 Over 10 EndFraction) + b. Step 2: 5 = StartFraction 6 Over 10 EndFraction + b.

defon

Answer:

D.) Step 6: student needed to add the b value.

Step-by-step explanation:

I got it wrong and it gave me the right answer, which is what i provided, D.

4 0

3 years ago

Read 2 more answers

Solve 2x^2 + x - 4 = 0 <br> X2 +

damaskus [11]

Answer:

$\large \boxed{\sf \ \ x = -\dfrac{\sqrt{33}+1}{4} \ \ or \ \ x = \dfrac{\sqrt{33}-1}{4} \ \ }$

Step-by-step explanation:

Hello, please find below my work.

$2x^2+x-4=0\\\\\text{*** divide by 2 both sides ***}\\\\x^2+\dfrac{1}{2}x-2=0\\\\\text{*** complete the square ***}\\\\x^2+\dfrac{1}{2}x-2=(x+\dfrac{1}{4})^2-\dfrac{1^2}{4^2}-2=0\\\\\text{*** simplify ***}\\\\(x+\dfrac{1}{4})^2-\dfrac{1+16*2}{16}=(x+\dfrac{1}{4})^2-\dfrac{33}{16}=0$

$\text{*** add } \dfrac{33}{16} \text{ to both sides ***}\\\\(x+\dfrac{1}{4})^2=\dfrac{33}{16}\\\\\text{**** take the root ***}\\\\x+\dfrac{1}{4}=\pm \dfrac{\sqrt{33}}{4}\\\\\text{*** subtract } \dfrac{1}{4} \text{ from both sides ***}\\\\x = -\dfrac{1}{4} -\dfrac{\sqrt{33}}{4} \ \ or \ \ x = -\dfrac{1}{4} +\dfrac{\sqrt{33}}{4}$

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

4 0

3 years ago

Please helppp meeeee

Sedbober [7]

May be I’m wrong, but I think all you have to do is 8x8x8= which is 512

Take your five twelve and divide by 3.14 and that leaves 163.057!

Hope this helps you.
~Brooke❤️

5 0

2 years ago