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3 years ago

The numbers I circled in red is the questions I have to do can somebody help meh wit dis.Pls and ty .

Mathematics

1 answer:

bija089 [108]3 years ago

4 0

8. 6m + 3n
11. 8r^3 - r^2
12. 3h^2 + 8

hope this helps !

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Carlos wants to practice piano 2 hours each day. He practices piano for 3/4 hour before school and 7/10 hour when he gets home.

CaHeK987 [17]

Answer:

Carlos has practiced piano for $\frac{29}{20}=1\frac{9}{20}$ hours.

Carlos needs to practice $\frac{11}{20}$ hours.

Step-by-step explanation:

We have been given that Carlos wants to practice piano 2 hours each day. He practices piano for 3/4 hour before school and 7/10 hour when he gets home.

First of all, we will find piano practiced before school and after school by adding both amounts as:

$\frac{3}{4}+\frac{7}{10}$

Make a common denominator:

$\frac{3*5}{4*5}+\frac{7*2}{10*2}$

$\frac{15}{20}+\frac{14}{20}$

Add numerators:

$\frac{15+14}{20}$

$\frac{29}{20}$

Therefore, Carlos has practiced piano for $\frac{29}{20}$ hours.

Now, we will subtract $\frac{29}{20}$ from 2 find number of hours Carlos needs to practice to reach his goal.

$2-\frac{29}{20}$

$\frac{2*20}{20}-\frac{29}{20}$

$\frac{40}{20}-\frac{29}{20}$

$\frac{40-29}{20}$

$\frac{11}{20}$

Therefore, Carlos needs to practice $\frac{11}{20}$ hours before going to bed in order to meet his goal.

7 0

3 years ago

A relation of the graphed below is NOT considered a function because of which pair of coordinates:

motikmotik

I think the answer is (-2,-1).

8 0

3 years ago

The function p is defined as p(x) = x2 – 3x. If the

Shtirlitz [24]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

$q(x) = {x}^{2} - 3x - 4$

$q(10) = ( {10})^{2} - (3 \times 10) - 4$

$q(10) = 100 - 30 - 4$

$q(10) = 70 - 4$

$q(10) = 66$

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

Thus the correct answer is (( C )) .

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

6 0

2 years ago

HELP!!!! I NEED THIS NOW!!!

Vedmedyk [2.9K]

150% salary raise means that your salary is being raised by 1.5 because 1.5 is 150%

For example, if you made 10 dollars for salary, 150% salary raise would result in you getting $15 now.

10x 1.5= 15

6 0

3 years ago

Help me with this one please.

kvasek [131]

I think you need to figure it out to 3. if you dont it wont make sense until you figure it out. maybe do what you know. you are given the first two answers. then you figure out how to prove it.

8 0

3 years ago