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3 years ago

Please help me out guys, Thank you.I am very poor at mathematics

Mathematics

1 answer:

Lesechka [4]3 years ago

7 0

Answer:

Step-by-step explanation:

Given the expression

x + 1/x = 9

Square both sides

(x + 1/x)^2 = 9^2

x^2 + 2x(1/x)+ (1/x)^2 = 81

x^2 + 2 + 1/x^2 = 81

x^2+1/x^2+2 = 81

x^2+1/x^2 = 81-2

x^2+1/x^2+ = 79

Hence the value of x^2+1/x^2 is 79

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Samuel and Jason spend 3/4 of their combined earnings from Wednesday to buy a gift. how much do they spend? Is there enough left

MrRissso [65]

$3.25 is the other 1/4. So $3.25 x 4 is $13 (their total). They spent $9.75

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3 years ago

What is the unit price of $4.00 for 26 ounces

MrRissso [65]

Answer:

$.15

Step-by-step explanation:

you take $4.00

divide by the items weight

to get $.1538

round to the nearest full cent

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3 years ago

A cold front hit Hartford, Connecticut. The temperature dropped by 7° F each hour from 5:00 a.m. to 9:00 a.m. What was the begin

never [62]

Hi! The temperature would be 18°.

There was a 4 hour period between 5 and 9 a.m.

So, I just took -10, and added 7 four times.

-10 + 7 + 7 + 7 + 7 = 18

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5 0

3 years ago

Find the distance between<br> (-3,5) and (4,-2)

Westkost [7]

Answer:

7√2 or approx. 9.89949

Step-by-step explanation:

distance between two points is

d=√(∆x^2+∆y^2)

where...

d is distance

∆x is change in x value

and ∆y is change in y value

In this problem ∆x=(-3)-4=(-7)

∆y=5-(-2)=7

plugging in those values gives us

d=√((-7)^2+7^2)

Solving this expression gives us

d=√(49+49)=√98

After simplifying the radical we are left with 7√2 or about 9.89949.

3 0

3 years ago

Which of the following pairs of triangles can be proven similar through SSS similarity?

Yakvenalex [24]

Based on the SSS similarity theorem, the pair of triangles that can be proven to be similar is the pair shown in the image attached below.

<h3>What is the SSS Similarity Theorem?</h3>

The SSS similarity theorem states that two triangle area similar to each other if the ratio of the three corresponding sides of both triangles are equal.

Thus, in the image attached below, the ratio of the three corresponding sides of the pair of triangles are:

10/2.5 = 11/2.75 = 8/2 = 4

Therefore, the pair of triangles that we can prove to be similar using the SSS similarity theorem is the pair shown in the image attached below.

Learn more about the SSS similarity theorem on:

brainly.com/question/4163594

#SPJ1

5 0

2 years ago

Please help me out guys, Thank you.I am very poor at mathematics​

Please help me out guys, Thank you.I am very poor at mathematics