3 years ago

I need help with question one & two

1 answer:

6 0

The atomic number above the element is the number of protons inside of it.
That’s number 1 so answer is 169.
Number 2 is H because in the description above it states it is highly reactive

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What's the equation of the line that passes through the point (3,-1)

Mazyrski [523]

I hope this helps you

x/3+y/-1=1

x/3-y=1

x-3y/3=1

x-3y=3

5 0

4 years ago

Given f (x) = x2 + 7, evaluate f (4).

Blizzard [7]

Answer:

f(4) = 23

Step-by-step explanation:

$f(x) = x^2 + 7$

Plug x = 4

$f(4) = 4^2 + 7$

$f(4) = 16 + 7$

$f(4) = 23$

8 0

3 years ago

Read 2 more answers

Mr. Harrison has $416 to spend on supplies for his classroom. He will buy a bookshelf and some books. The bookshelf costs $80. H

Studentka2010 [4]

X = bookshelf //// y = books
x + y = 416
416-80 = y4

336 = y4
336/4 = y
84 = y

Mr. Harrison can buy 84 books

4 0

3 years ago

5 - <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bt%7D%7B3%7D" id="TexFormula1" title="\frac{t}{3}" alt="\frac{t}{3}" align="absmi

Aliun [14]

Answer:

Step-by-step explanation:

If you put in 12 for t, you might see what to do.

5 - 12 / 3

12 divided by 3 = 4

/ means divide

5 - 4 = 1

8 0

3 years ago

Factor the equation a² - a - 12

Kaylis [27]

Answer:

a = -4

a = 3

Step-by-step explanation:

Hope that helps

6 0

3 years ago