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3 years ago

Find the 2nd and 3rd term of the sequence 1, _, _, –11, –15, ...

Mathematics

2 answers:

elena-14-01-66 [18.8K]3 years ago

7 0

Answer:

-3, -7

Step-by-step explanation:

It's an arithmetic sequence subtracting four each time

-3, -7

Elena L [17]3 years ago

5 0

Answer:

Step-by-step explanation:

-4 and - 7 are the second and third term

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I NEED HELP WITH THIS <br> Q1

levacccp [35]

Answer:

$\frac{1}{4} (x-5)=13$

Step-by-step explanation:

So when we multiply this is what we get:

$\frac{x-5}{4}=13$

then we multiply the 4 by 13:

$x-5=52$

then after that we add 52+5 and we get:

$x=57\\$

4 0

2 years ago

Read 2 more answers

Solve 9x^2- 17x- 85 = 0 Give your solutions correct to 3 significant figures.

dybincka [34]

Answer:

$x =\frac{17}{18} +\frac{1}{18} \sqrt{3349}$ OR $x =\frac{17}{18} +\frac{-1}{18} \sqrt{3349}$

Step-by-step explanation:

9x2−17x−85=0

For this equation: a=9, b=-17, c=-85

9x2+−17x+−85=0

Step 1: Use quadratic formula with a=9, b=-17, c=-85.

$x =\frac{-b + \sqrt{b^{2}-4ac } }{2a}$

$x =\frac{-(-17)+\sqrt{(-17)^{2} -4(9)(-85)} }{2(9)}$

$x =\frac{17}{18} +\frac{-1}{18} \sqrt{3349}$

4 0

2 years ago

100/32 can someone help me how much would this be in fraction

kap26 [50]

Your answer would be 3 and 1/8

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2 years ago

If a number line shows tick marks that are not labeled, can you determine the coordinate of a point located at an unlabeled tick

GarryVolchara [31]

If other tickmarks are labeled, then you could do some detective work (of sorts) to figure out the unlabeled tickmarks.

For example, let's say we had a number line with 1,2,3,... and let's say that 7 was covered up or erased or smudged. So we have 1,2,3,4,5,6,__,8,9. We could then easily determine that 7 must go in that blank spot. This is just one example of course.

Another example could be that if we had a tickmark right in the middle of two whole numbers, say 0 and 1. This unlabeled tickmark would most likely be 1/2 = 0.5 as its at the halfway point between 0 and 1.

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3 years ago

What are roots of the equation -90=x (x-18)

daser333 [38]

Answer:

-90= $x$ ( $x$ -18)