can someone solve this:
a = 21+(-4)

Answer:

a=2.5

Step-by-step explanation:

3a-2.4=5.1   Add the like terms ( plus 2.4 cancels out -2.4)

   +2.4  +2.4

3a=7.5  Now divide by 3

/3     /3

a=2.5

Answer:

4 in

Step-by-step explanation:

bac=6in2 3*2=6 then 2*2=4in2

for A multiply each time(hour) by 65 and when the number of hours doesnt have a number by it divide the pages by 65.

Step-by-step explanation:

Example for the first one multiply 65 by 3 , and for the pages divide 585 by the number you got previously from the # of pages. And also the same for B

Answer:

0

Step-by-step explanation:

Zero divided by any number is zero

For instance,

there are no apples, and your mom says you and your brother are to share the apples. because there are no apples, neither of you gets an apple and that makes it 0apples for each of you.

(I hope this helps)

Answer:

30

Step-by-step explanation:

Ur Welcome

The number of problems they were able to solve before the new mathletes joined, 30

Percentage is a way to express a number as a fraction of 100. It is often used to represent ratios and proportions in a more convenient and understandable form, especially in financial and statistical contexts. For example, 50% means 50 per 100, or half of a given quantity. It is denoted using the symbol "%".

Given that,

After a few mathletes join the team, the team is able to solve 40% more problems per session

Let X be the number of problems the team was able to solve before the new mathletes joined.

We know that after the new mathletes joined, they were able to solve 42 problems per session, which is 40% more than before, so:

X x 1.40 = 42

Solving for X:

X = 42 / 1.40 = 30.

To know more about Percentage check:

https://brainly.com/question/29306119

#SPJ6

Answer:

the top is far up

Step-by-step explanation: if u  fall u will die

Answer:

A

Step-by-step explanation:

it's A because it is the only option with an inequality symbol

the inequality symbols are: < > ≤ ≥

Answer:Hope this helps!

Step-by-step explanation:

Answer:

m and n are both equal to 10

Step-by-step explanation:

Because we see that the two of the angles here are 45 and 90, we know then that the third angle is also 45.  This tells us that the sides m and n are of equal length.

With that in mind, we can simply use the Pythagorean theorem to find their values:

m² + n² = (10√2)²

given that m = n, then:

m² + m² = (10√2)²

2m² = (10√2)²

2m² = 100 × 2

2m² = 200

m² = 100

m = 10

So both m and n are equal to 10.

Answer:

Algebra can be applied to the temperature in different places that both change, height of a growing child over time, the speed of a car that changes over time (mph), and the age of people that increases over year.

Step-by-step explanation:

Answer:

13 miles lol that's what I Kno

Answer:

12%

Step-by-step explanation:

[tex]P=\frac{6}{22+20+6+2} =.12[/tex]

Answer:

Yes

Step-by-step explanation:

Answer:

9+(c*2)

im pretty sure this is correct, sorry for misreading it at first <3

Answer:

x= 33.9

Step-by-step explanation:

use cosine because x is the adjacent and 40 is the hypotenuse

set up your equation:

cos(32)= (x/40)

multiply both sides by 40:

40(cos(32))= (x/40)40

40(cos(32))= x

multiply 40 by the cos(32):

33.9 = x

Answer:

p + m - 10 is your expression

Step-by-step explanation:

Answer:

p + m - 10

Step-by-step explanation:

Hi , expressions are easy you just need to know how to read these weird word problems they give us.

Let us look at some key words and change them into symbols and not words.

10 less

This means it will most likely be a -10 somewhere

The sum of p and m

This would mean addition, so p + m

With this info we can form an expression.

p + m - 10

This is how I would write it.

Since the sum of p and m is (p+m) and the 10 less is the (-10)

You would add the p and m to find their sum and then take off 10 for the 10 less.

I hope this helps!

If you have any questions or concerns please comment or message me! :)

Answer:

4.69 in

Step-by-step explanation:

By sine rule:

[tex] \frac{ \sin \: 23 \degree}{a} = \frac{ \sin \: 90 \degree}{12} \\ \\ \frac{ \sin \: 23 \degree}{a} = \frac{1}{12} \\ \\ a = 12 \: \sin 23 \degree \\ \\ a = 12 \times 0.3907311285 \\ \\ a = 4.68877354 \\ \\ a \approx 4.69\: in[/tex]

Answer: no solution

Step-by-step explanation: after simplifying they are parallel which means they have no solutions

Answer:

The answer is 3x^2 + 3x + 27

Step-by-step explanation:

Simplify the expression.

hoped this helped!

brainly, please?

Answer:

Number of students in the soccer team [tex]=9[/tex]

Step-by-step explanation:

Number of students in the hockey team [tex]=18[/tex]

Let [tex]x[/tex] denotes number of students in the soccer team.

The hockey team had 18 students try out for the team, which was 2 times the number of students who tried out for the soccer team.

[tex]18=2x\\\frac{18}{2}=x\\9=x[/tex]

Therefore,

Number of students in the soccer team [tex]=9[/tex]

Answer:

1

Step-by-step explanation:

Answer:

1

Step-by-step explanation:

The slope is 1 which is times to the variable x. When there is x by itself then remember that there is a 1 times to the x.

Hope this helps, thank you !!

Answer: x = 3

I hope this helps you and im not to late