Can anybody help me with this question please ?
Can anybody help me with this question please ? - 1

Answers

Answer 1
Answer:

Answer:

x = 8.75, y = 8.125

Step-by-step explanation:

The triangles are similar thus the ratios of corresponding sides are equal, that is

(8)/(5) = (14)/(x) ( cross-  multiply )

8x = 70 ( divide both sides by 8 )

x = 8.75

And

(8)/(5) = (13)/(y) ( cross- multiply )

8y = 65 ( divide both sides by 8 )

y = 8.125


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2. NUMBER SENSE If 52 is 130% of a number, is the number greater or less than 52? Explain

The sum of a number and 3 is equal to 5 less than double that number. What is the number?

Answers

Answer:

sum of a number 2 plus3 is equal to 5

and less than its double 2×2=4 so the answer is 2

Answer:

when ever it says a number its a variable so it would look like this

Step-by-step explanation:

X+3=5=2x2=4

A music shop has 5 different brands of guitar strings. The 5 different brands sell for $16, $20, $15, $11, and $13. What is the mean absolute deviation of the prices? Round to the nearest cent, if necessary.

Answers

75 divided by 15 = 5

How can i factor 27+12

Answers

= 27 + 12
3 is common in both of them so
= 3 (9 + 4)
The answer is 3(9+4).
Firstly look for the highest number which goes into both of them:

1 goes into both of them
3 goes into both of them and is the highest so we use this one.

Next write a 3 outside a set of brackets:
3(\ )

Then, the point of these brackets is that you times everything inside them by 3 so in order to get the numbers inside, you divide both by 3.

27 / 3 = 9
12 / 3 = 4

So now put these back into the brackets and you're done:

3(9+4)

Try to factorise 18+12 now to make sure you understand.

Need help Math 8 lesson 10.4 . I know that i have to keep the base and that the top turns into a one.

Answers

There are two ways to do this, but I'm only gonna use the first way.
First, to move the 2^-8 to the numerator and combine the exponents, and keep the same base and you get 2^ 14. Next, to divide powers, you subtract the exponents and keep the base. So 2^14/2^10 gives you  2^4. If you want to simplify it further, you'll get 16.
so you add the exponents and then you multiply the sum by the base number. that becomes your denimator. then you solve the numerator and your answer becomes the new numerator of your new denominator. Finally you simplefy

Sean read 18 pages in 30 minutes. if he has finished page 128, how many hours will it take him to finish his 308-page book if he continues reading at the same rate. I just. we'd help on the work/how to figure it out. thanks :-)

Answers

an hour and  30 minutes

FIND THE VALUE OF x³=-8
A ±4
B ±2
C-2
D-4

Answers

Answer:

x=-2

Step-by-step explanation:

In this kind of question,we will have to be extra careful to prevent errors or mistake.reason for the errors and mistake is that there is a negative sign in front of the 8...so any solution must ensure to involve the negative sign...or else the final answer will be discarded...

So back to the question

X^3=-8

Which means that the cube of x is 8 and we are to solve for x, therefore to solve this question...we will have to cube root both sides...why

So as to eliminate the cube on x...

Ok how,cube root of x^3 can also be written as x^3×1/3 which gives x

And cube root of -8 will be either 8^1/3 or3√-8

And the answer is-2

To confirm the answer we can say -2×-2×-2=-8

So the final answer is -2

Therefore x=-2

Answer:

C.) \:  \:  \:  - 2

Step-by-step explanation:

({ - 2})^(3)   =  - 8