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3 years ago

Can someone help please??

Mathematics

1 answer:

posledela3 years ago

6 0

8^2+15^2=x^2
64+225=x^2
289=x^2
Hypotenuse=17

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can someone explain scientific notation to me? i dont know if this would be a right question but i need it to be explained

Nikitich [7]

Answer:

In step by step explanation

Step-by-step explanation:

Move your decimal until you have one non-zero number left of your deciaml point the number of times you moved you decimal to the left will be the exponent you put attached to a ten.

8 0

3 years ago

The average score on a biology test was 72.1. Write the average score using a fraction.

zhannawk [14.2K]

Answer:

721/10

Step-by-step explanation:

Shift the decimal place over one for the numerator and the denominator

8 0

4 years ago

16x -7<-71 Please Help

saw5 [17]

Answer:

x<-4

Step-by-step explanation:

$16x - 7 < - 71 \\ 16x < - 71 + 7 \\ 16x < - 64 \\ x < - 4$

4 0

3 years ago

Water boils at different temperatures at different elevations. The boiling temperature of water is 212 degrees * F sea level (0

Nikolay [14]

Answer:

The elevation when the boiling point of water is $190$ ° $F$ is 12790.70 feet

Step-by-step explanation:

Let every 1,000 feet of elevation be $x$ . Hence, we can write

$T = 212$ $- 1.72x$

Where $T$ is the boiling temperature of water at different elevations

Now, to the determine the elevation when the boiling point of water is $190$ ° $F$ .

We will determine $x$ by putting $T = 190$ ° $F$ .

Hence,

$T = 212$ $- 1.72x$

$190$ $= 212$ $- 1.72x$

$190 - 212$ $= - 1.72x$

$- 22$ $= - 1.72x$

$22 = 1.72x\\x = \frac{22}{1.72} \\x = 12.79070$

Since $x$ represents every 1,000 feet of elevation, then the elevation when the boiling point of water is $190$ ° $F$

$12.79070$ × $1000\\$ $= 12790.70$ feet

Hence, the elevation when the boiling point of water is $190$ ° $F$ is 12790.70 feet

8 0

4 years ago

What is the x-value of the solution of the system of

LenaWriter [7]

Answer:

Step-by-step explanation:

hello :

y= 5x + 9

y = -x +3

so : 5x+9 = -x+3

5x+x= 3-9

6x=-6

x=-6/6 = -1

5 0

4 years ago

Read 2 more answers