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3 years ago

Question 12

Mathematics

1 answer:

Makovka662 [10]3 years ago

7 0

Answer:

i dont really know the asnwer to be honest

Step-by-step explanation:

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O) x² – 18x - 19 + 20y - y2,

pshichka [43]

Answer:

19x-19+23y

Step-by-step explanation:

add the like terms

7 0

3 years ago

Identifying solutions by evaluating is the number a solution of 2x +1>-3

liq [111]

Answer:

b or c

Step-by-step explanation:

2×-1 +1= -1

-1>-3

2×0+1= 1

1>-3

For this reason the equality can be b or c

8 0

3 years ago

Alyssa is factoring the following expression p∆2-8p-9. She said the answer is (p-1) (p +9). Is she correct? If not, explain her

Lesechka [4]

Answer:

Step-by-step explanation:

p^2-8p-9

factor out the trinomial

(p-9)(p+1)

Therefore, she's incorrect. Because (p-1)(p+9)=p^2-p+9p-9=p^2+8p-9 and that's different from p^2-8p-9.

5 0

3 years ago

Pls help!!! evaluate the function for x=m/4

EastWind [94]

Plug in m/4 into the equation:

$8 (\frac{m}{4})^{2} - 4(\frac{m}{4})$

Solve the parentheses in the equation:

$\frac{m}{4}^{2} = \frac{m}{4} \times \frac{m}{4} = \frac{m^{2}}{16}$
$8 \times \frac{m^{2}}{16} = \frac{8m^{2}}{16} = \frac{m^{2}}{2}$

$4 \times \frac{m}{4} = \frac{4m}{4} = m$

Your equation should now look like this:

$\frac{m^{2}}{2} - m$

The answer is D.

6 0

3 years ago

Mrs. Barnett has 5 cups of sugar. A batch of cookies uses 1/3 cup of sugar.

MakcuM [25]

Answer:

15 batches of cookies

Step-by-step explanation:

We need to find out how many third cups do into 5 cups. We can do this by 5 ÷ 1/3

When dividing fractions, use KFC:

Keep the first fraction the same

Flip the second fraction
Change the sign from ÷ to ×

Therefore, 5 ÷ 1/3 = 5 × 3/1 which is 15 batches of cookies

Hope this helps!

7 0

2 years ago