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3 years ago

Please help! I will Brainliest to the right answer!

Mathematics

1 answer:

cupoosta [38]3 years ago

3 0

The rate of change of item ll is greater than the rate of change of item l (B).

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Rewrite the following using the GCF and the distributive property<br> :32 + 54

oksian1 [2.3K]

Answer:

GCF: 2

Step-by-step explanation:

GCF: 2

(2*16) + (2*27)

3 0

3 years ago

Prove that: 16sin20.sin40.sin60.sin80=3

olga nikolaevna [1]

to prove that 6720. Sin 40. Sin 60. 80 equals 3 you'd have to divide 16 by 20 multiply subtract both sides by 3 which is 24x + 6x + 8x + -14 equals 40 40 + 20 equals 16 - -40 equals 80 which equals to 3

6 0

4 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

Plz help fast Jack, John, Lily, and Sara want to take a picture together. In how many ways can they are arranged?

jasenka [17]

Answer:

The best estimate would be around 10-16

Step-by-step explanation:

The think is that they can be in many orders and since there is four of them it would be more orders.

Hope this helps

6 0

3 years ago

The sides of a triangle are in the ratio, 4:5:7 and its perimeter is 64cm. find its area , correct to 2 decimal places

KATRIN_1 [288]

Answer:

Step-by-step explanation:

First find all the sides of the triangle:

Total parts: 4+5+7 = 16

cm per part = 64/16 = 32/8 =4cm

therefore, all measures: 16cm, 20cm, 28cm.

5 0

4 years ago

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Please help! I will Brainliest to the right answer!​

Please help! I will Brainliest to the right answer!