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icang [17]
3 years ago
8

Justin and Austin decide to play catch after school. They start at the same point.

Mathematics
2 answers:
Deffense [45]3 years ago
8 0
I think it’s A


a^^^^
SashulF [63]3 years ago
7 0
Ok so The answer is A

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Explain why please and make sure it is in full detail
Marysya12 [62]

Step-by-step explanation:

well,

(y - 7)² = (y - 7)(y - 7)

remember how to multiply 2 expressions ?

you have to multiply every term of one expression with every term of the other expression and sum the results all up (incl. considering their individual signs, of course).

so, when we do the multiplication, we get

(y - 7)(y - 7) = y×y - 7×y - 7×y + (-7)×(-7) =

= y² - 14y + 49

and that is clearly different to y² - 49

FYI

y² - 49 is the result of

(y - 7)(y + 7)

because

y×y + 7×y - 7×y + (-7)(7) = y² - 49

8 0
2 years ago
Read 2 more answers
May types 125 words 7.5 minutes.Josh types 65 words in 3mins.Tyler types 400 words in 28 minutes. Order the student from who can
tensa zangetsu [6.8K]
Tyler can type the fastest among the three.
5 0
3 years ago
Butyric acid ( c3h7cooh) is a weak acid . what is the ph of a 0.0250 m solution of this acid. ka = 1.5 x 10-5 (2 decimal places)
Wewaii [24]

The pH of the weak acid is 3.21

Butyric acid is known as a weak acid, we need the concentration of [H+] formula of weak acid which is given by this equation :

[H^{+}]=\sqrt{Ka . Ma}

where [H+] is the concentration of ion H+, Ka is the weak acid ionization constant, and Ma is the acid concentration.

Since we know the concentration of H+, the pH can be calculated by using

pH = -log[H+]

From question above, we know that :

Ma = 0.0250M

Ka = 1.5 x 10¯⁵

By using the equation, we can determine the concentration of [H+]

[H+] = √(Ka . Ma)

[H+] = √(1.5 x 10¯⁵ . 0.0250)

[H+] = 6.12 x 10¯⁴ M

Substituting the value of [H+] to get the pH

pH = -log[H+]

pH = -log(6.12 x 10¯⁴)

pH = 3.21

Hence, the pH of the weak acid c3h7cooh is 3.21

Find more on pH at: brainly.com/question/14466719

#SPJ4

8 0
1 year ago
What is the answer to <br>3p-5&gt;2p+p-7
svet-max [94.6K]

Step-by-step explanation:

3p−5>2p+p−7

3p−5>3p−7

3p−5−3p>3p−7−3p

−5>−7

−5+5>−7+5

0>−2

Answer:

All real numbers are solutions.

-sammy

Hope this helps u mark me as brainiest if u think its right

3 0
3 years ago
Read 2 more answers
Which solution contains the correct number of significant digits for the product 2.80 mm · 0.1 mm.
BigorU [14]
2 significant digits should be represented in the product
8 0
3 years ago
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