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3 years ago

Just answer this I guess bc I have more for you guys and girls

Mathematics

1 answer:

Lana71 [14]3 years ago

7 0

Answer:

The answer is 13/15 gallons.

Step-by-step explanation:

2/3 + 1/5

10/15 + 3/15 = 13/15

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Suppose z=x2sin(y), x=5t2−5s2, y=−6st.

vitfil [10]

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6 0

3 years ago

Order the numbers from least to greatest<br> 6.23<br> 6.023<br> 0.623<br> 62.30

mrs_skeptik [129]

Answer:

0.623, 6.023, 6.23, 62.30

Step-by-step explanation:

6 0

3 years ago

Use the completing the square method to find the roots of 2x^2+3x-15=13 include the steps, it would be greatly appreciated thank

Monica [59]

Answer:

The roots are

$x1= \frac{-3+\sqrt{233}}{4}$

$x2= \frac{-3-\sqrt{233}}{4}$

Step-by-step explanation:

we have

$2x^{2}+3x-15=13$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$2x^{2}+3x=13+15$

$2x^{2}+3x=28$

Factor the leading coefficient

$2(x^{2}+(3/2)x)=28$

Complete the square. Remember to balance the equation by adding the same constants to each side

$2(x^{2}+(3/2)x+(9/16))=28+(9/8)$

$2(x^{2}+(3/2)x+(9/16))=233/8$

$(x^{2}+(3/2)x+(9/16))=233/16$

Rewrite as perfect squares

$(x+(3/4))^{2}=233/16$

square root both sides

$(x+\frac{3}{4})=(+/-)\sqrt{\frac{233}{16}}\\ \\(x+\frac{3}{4})=(+/-)\frac{\sqrt{233}}{4}\\ \\x= -\frac{3}{4}(+/-)\frac{\sqrt{233}}{4}$

$x1= -\frac{3}{4}(+)\frac{\sqrt{233}}{4}=\frac{-3+\sqrt{233}}{4}$

$x2= -\frac{3}{4}(-)\frac{\sqrt{233}}{4}=\frac{-3-\sqrt{233}}{4}$

7 0

3 years ago

Help me :D i appreciate anyone who can!

dmitriy555 [2]

Answer:

I don’t understand what do we have to do?

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

If △ABC ~ △DEF, find the length EF.

hodyreva [135]

Answer:

EF=BC (by CPCT) if both Triangle are ~

8 0

3 years ago